Updating of Bangladesh National
Building Code 1993
INCEPTION REPORT
FEBRUARY 2010
Submitted to
Housing and Building Resear...
ii
SUMMARY
Ministry of Housing and Public Works formed a steering committee with the responsibility of
Updating BNBC 1993 ...
iii
intended for use in the rural areas. The use of well designed and economic bamboo
structures is expected to be attract...
iv
TABLE OF CONTENTS
Summary ii
Introduction 1
1.1 General 1
1.2 Background 2
1.3 Objectives 3
1.4 Scope of Services 4
1.5...
v
4.4 Preliminary Review of Collected Documents 34
4.4.1 Introduction 34
4.4.2 Preliminary Review of International Buildin...
vi
6.2 Terms of Reference of Individual Consultants 69
6.3 List of Collected Documents 69
6.4 List of Documents to be Coll...
vii
7.6 Information Technology 94
7.6.1 Terms of Reference of the Consultant 94
7.6.2 Collection of Documents 95
7.6.3 Ten...
1
INTRODUCTION
1.1 GENERAL
In order to provide safe and healthy habitat, all activities related to building construction
s...
2
estate developers following which new trends developed in building planning and
construction. Some real-estate developer...
3
Institute (HBRI) has been entrusted with the task of providing secretarial service to the
Steering Committee and managin...
4
1.4 SCOPE OF SERVICES
The project will yield three distinct outputs as described above in separate submissions. To
achie...
5
• Arrangement of Seminars/Workshops on the revised draft to gather views of relevant
professionals and feedbacks before ...
6
of different Groups and individual Consultants, lists of documents collected and other
required documents and preliminar...
7
WORK PLAN
2.1 METHODOLOGY
The tasks of the present assignment will be carried out keeping in view of the quality of
serv...
8
Fig. 2.1: Schematic diagram showing the methodology for updating the code
Inputs
• Review of the present
code
• Review o...
9
REVIEWING OTHER DOCUMENTS
Prevailing buildings codes and standards of other countries will be reviewed and compared
with...
10
the Draft documents the feedbacks from National Workshops, Steering Committee and
Editorial Committees will be incorpor...
11
Electrical Engineering
Fuel and Gas Supply
Environmental Engineering
Plumbing
Information Technology
Administration
Law...
Table 2.1: Team Composition and Task Assignments
OFESSIONAL STAFF
Name of Staff Firm/Organisation Area of Expertise Positi...
OFESSIONAL STAFF
Name of Staff Firm/Organisation Area of Expertise Position Assigned Task Assigned
of. Abu Siddique BRTC, ...
OFESSIONAL STAFF
Name of Staff Firm/Organisation Area of Expertise Position Assigned Task Assigned
gr. Belal Ahmed --- HVA...
15
2.2.2 MANAGEMENT
The team of Consultants have been divided into five groups for management of the project.
A Group Lead...
ARCH
MSCE
Par
GROUP
Architectu
Pro
Pro
Arc
E GROUP
Materials E
Pro
Pro
Structure E
Pro
Pro
Pro
Dr.
Dr.
Constructi
Pro
rts ...
17
Engr. Sabbir Siddiquee
Earthquake Engineering Experts:
Prof. Tahmeed M. Al-Hussaini
Prof. Tahsin Reza Hossain
GEO GROUP...
18
Submission of Interim Report: 7th
May 2010
Submission of Draft Code, Act, Administrative arrangement: 21st
August, 2010...
Table 2.2: Work Schedule
ription of
ity
Date15/12/09
15/01/10
15/02/10
15/03/10
15/04/10
15/05/10
15/06/10
15/07/10
15/08/...
Table 2.3: Project Milestones
cription of Activity
Date
15/12/09
15/01/10
15/02/10
15/03/10
15/04/10
15/05/10
15/06/10
15/...
Table 2.4: Staffing Schedule
No.
Name of Staff
Staff-month input by month
Total staff-
month input
1 2 3 4 5 6 7 8 9 10 11...
No.
Name of Staff
Staff-month input by month
Total staff-
month input
1 2 3 4 5 6 7 8 9 10 11 12
15. Prof. A. M. M. Taufiq...
No.
Name of Staff
Staff-month input by month
Total staff-
month input
1 2 3 4 5 6 7 8 9 10 11 12
30. Prof. Md. Mujibur Rah...
24
PLANNING, ENVIRONMENT, ADMINISTRATION
AND LEGISLATION
3.1 TERMS OF REFERENCE OF THE GROUP
a. Review of relevant codes a...
25
Environmental expert- Prof. Md. Mujibur Rahman
a. Act as Group Leader and maintain liaison with the Team Leader/Coordin...
26
c. Recommend effective enforcement mechanism.
d. Assist the Group Leader and Team Leader.
3.3 LIST OF COLLECTED DOCUMEN...
27
wastage of land and other resources and consequently leading to problems like sprawl,
pollution, congestion, threats, e...
28
ii. The Pakistan Engineering Council is a statutory body, constituted under the Pakistan
Engineering Council Act, 1976 ...
29
3.6 PRELIMINARY REVIEW OF BNBC 1993
Bangladesh National Building Code (BNBC) of 1993 came into effect with a gazette
no...
30
The chapter on Planning will focus on those areas or factors which need to be taken into
account when planning and deve...
31
ARCHITECTURE
4.1 GENERAL
The basis for the building-code development is to safeguard the health, safety and welfare
of ...
32
h. Recommendations for requirements of graphic signs and outdoor displays with
regard to public, structural and other s...
33
4.3 COLLECTION OF RELEVANT DOCUMENTS
4.3.1 INTRODUCTION
An important step in the methodology for up gradation of the Co...
34
vi. Jenks (M.), Burton (E.) and Williams (K.), The Compact City- A sustainable
Urban Form?, Taylor & Francis Inc., USA ...
35
Building occupancy classification is according to first letter – F for factories, R for
residential, etc. with usually ...
36
is not included in the present BNBC code, but with new emphasis on climate change and
realization of the impacts of bui...
37
include codes for inclusion of renewables within the framework of the energy
consumption of the building.
b. A chapter ...
38
meaningful as it is in the case of minimum kitchen size- the minimum size of a
kitchen varies according to the type of ...
39
• New occupancy type for socio-cultural facilities (e.g. community hall, library,
recreational club, music/dance/drama ...
40
• More occupancy types need to be included
Section 2.5: REQUIREMENTS OF OCCUPANCY R: RESIDENTIAL BUILDINGS
• Typologies...
41
MATERIALS, STRUCTURE, CONSTRUCTION AND
SEISMIC PROVISIONS
5.1 TERMS OF REFERENCE OF THE SUBGROUPS
5.1.1 SUBGROUP: MATER...
42
and to formulate a revised Building Materials Code for use in regulating building and
construction activities in both u...
43
f. Study of the development of Construction Industry and the Safety Practices both
home and abroad.
g. Review and upgra...
44
k. Exploring for the introduction of retrofitting aspects of existing reinforced concrete
structures to be earthquake r...
45
5.2.2 SUBGROUP: STRUCTURE
SENIOR STRUCTURAL ENGINEER 1 – PROF. A.M.M. TAUFIQUL ANWAR
a. Act as Group Leader and maintai...
46
reputed universities or else within the country and outside and evaluation of such for
adoption in the updated code.
c....
47
e. Review and revision of general structural design requirements, loads, structural
design for Timber, Bamboo, Masonry ...
48
5.2.4 SUBGROUP: EARTHQUAKE ENGINEERING
SENIOR EARTHQUAKE ENGINEER – PROF. TAHMEED M. AL-HUSSAINI
a. Act as Subgroup Lea...
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  1. 1. Updating of Bangladesh National Building Code 1993 INCEPTION REPORT FEBRUARY 2010 Submitted to Housing and Building Research Institute (HBRI) Bureau of Research Testing and Consultancy (BRTC), Bangladesh University of Engineering and Technology (BUET)
  2. 2. ii SUMMARY Ministry of Housing and Public Works formed a steering committee with the responsibility of Updating BNBC 1993 by a G.O. having circular no. Section 8/IM-5/93(part) 812 (28) date: 15.09.2008. The Housing and Building Research Institute (HBRI) has been entrusted with the task of providing secretarial service to the steering committee and managing the implementation of the project. In response to the Request for Proposal (RFP) from HBRI, Bureau of Research, Testing and Consultation (BRTC) of Bangladesh University of Engineering and Technology (BUET) submitted Technical and Financial proposals for updating the code. Consequently an agreement was signed between HBRI and BRTC on the 15th of December, 2009 giving the task of updating the Code to BRTC, BUET. According to the TOR of the agreement the major tasks assigned to BRTC are; • Review and Update of BNBC 1993 • Review and Update of the Building Construction Act 1952 and the Administrative Arrangement and Implementing Provisions of it A team of experts consisting of 33 Professionals from various disciplines (27 from BUET and 6 from outside) were gathered for updating the code. For management and co-ordination of the work, a team leader and a coordinator has been assigned from among the consultants. It is to be remembered that the present version of the BNBC was prepared in 1993. Since then major changes have taken place in every discipline of the Building technology. To make the Updated code time worthy and at par with the codes of both the neighboring and developed countries, the codes and other related documents have been collected from these countries. These documents, including books, journals, manuals, research reports etc. available in the libraries of the Bangladesh University of Engineering and Technology (BUET) have been preliminarily reviewed by the consultants to identify changes / modifications of BNBC 1993. The preliminary reviews and suggestions and the tentative table of contents proposed for the Updated BNBC have been presented in the inception report. The process of collection and review of documents will continue along with inclusion of the findings of the review in the updated code at different stages of its preparation till finalization of the Updated version. It is proposed that the Updated BNBC will have 10 parts with a total of 54 chapters. Moreover some chapters will contain a number of appendices wherein sample calculations, design tables, graphs etc. will be provided for use by the readers for important analysis and designs. Part-6 Structural Design has 13 chapters which is the maximum among all the parts. In the contents of the proposed Updated Code, almost all of the topics of BNBC 1993 have been retained. Moreover some of these have been elaborated to accommodate the changes identified during review of the BNBC 1993 and the various codes and documents collected to make their scope wider, up to date and user friendly. In the following sections the changes are discussed with emphasis on the needs for the changes and the inclusions suggested. Part-6 “Structural Design” chapter in the Updated Code will include two new chapters, one on Bamboo Structure and the other on Steel-Concrete Composite Structures. The former is
  3. 3. iii intended for use in the rural areas. The use of well designed and economic bamboo structures is expected to be attractive to the rural people. The Steel Concrete composite structures are expected to be widely used in the industries. In urban areas this type of structure is expected to find application in high rise construction. Contrary to the presentation of Geotechnical engineering in BNBC 1993 wherein it has been treated as “Foundation” having limited scope, in the Updated code the Geotechnical engineering has been re-named as “Soils and Foundations” as revealed during review of most of the codes. The scope of the proposed “Soils and Foundations” chapter has been made wider by including topics such as ground improvement, geo-textiles, soil reinforcement, slope stability, foundation on problematic soils and sanitary landfills, dewatering, evaluation of liquefaction potential of soils. The new scope of the “Soils and Foundations” chapter is in line with the codes reviewed and requirements of the Geotechnical professionals of the country. Depletion of energy resources and environmental changes is a major concern worldwide. Bangladesh is no exception to it. Keeping these aspects in mind, changes and modifications have been suggested in BNBC 1993 for use of energy saving appliances, non-conventional fuels etc. in buildings. It has also been proposed that the Updated BNBC will contain chapters addressing the issues of energy conservation, rainwater harvesting and distribution mechanisms in the buildings. These are discussed in details below. In Part 3, “General Building Requirements, Control an Regulation” new Chapter-4 “Energy Efficiency and Passive Energy Design Features” has been proposed giving minimum code requirements for achieving the efficiency, targeting solar energy use in buildings of 10% to 20% by 2020. To reduce energy consumption in buildings provisions for use of variable refrigeration system in HVAC applications, Variable Voltage, Variable frequency drives in elevator applications has been proposed in Chapter-3 “Air Conditioning, Heating and Ventilation” of Part-8 “Building Services”. Energy conservation in lighting using energy saving lamps, Fluorescent lamps and GLS lamps has also been proposed in Chapter-2, “Electrical Installation” of the same part. To augment water supply in Buildings, Chapter-8, “Rainwater Management” in Part-8 “Building Services” has been included in the Updated Code containing specific guidelines for harvesting, storage and distribution of rainwater. To make the fire fighting services available to people residing in the congested urban areas, rural areas and remote areas, special provisions have been proposed in the Chapter “Specific Requirements for Rural Areas and Remote Areas of Part-4 “Fire Protection” of the Updated Code. Chapter-4 “Administration, Permit and Inspection” and Chapter-5 “Legal Proceedings” of Part-2 “Planning, Environment, Administration and Legislation” have been included for control and enforcement of the provisions of the Updated Code in all activities related to the building planning and construction at all levels. It is proposed that the sections will demarcate the administrative and legal issues more clearly for smooth management of the building construction activities.
  4. 4. iv TABLE OF CONTENTS Summary ii Introduction 1 1.1 General 1 1.2 Background 2 1.3 Objectives 3 1.4 Scope of Services 4 1.5 Scope of the Report 5 Work Plan 7 2.1 Methodology 7 2.1.1 Inputs 7 2.1.2 Process 9 2.1.3 Outputs 9 2.1.4 Review 10 2.1.5 Final Output 10 2.2 Organization and Management 10 2.2.1 Organization 10 2.2.2 Management 15 2.3 Work Schedule 17 2.4 Personnel Deployment Schedule 18 Planning, Environment, Administration and Legislation 24 3.1 Terms of Reference of the Group 24 3.2 Terms of Reference of Individual Consultants 24 3.3 List of Collected Documents/Information 26 3.4 List of Documents to be Collected 26 3.5 Preliminary Review of Collected Documents 26 3.5.1 Planning 26 3.5.2 Environment 27 3.5.3 Administration and Legislation 27 3.6 Preliminary Review of BNBC 1993 29 3.7 Tentative Structure of the Updated Code 29 Architecture 31 4.1 General 31 4.2 Terms of Reference of the Group 31 4.3 Terms of Reference of Individual Consultants 32 4.3 Collection of Relevant Documents 33 4.3.1 Introduction 33 4.3.2 Documents Already Collected 33 4.3.3 Documents to be Collected 34
  5. 5. v 4.4 Preliminary Review of Collected Documents 34 4.4.1 Introduction 34 4.4.2 Preliminary Review of International Building Code (IBC_2009) 34 4.4.3 Preliminary Review of National Building Code of India (2005) 37 4.4.4 Preliminary Review of Building Code of China 37 4.5 Preliminary Review of BNBC-1993 38 4.6 Tentative Structure of the Updated Code 40 Materials, Structure, Construction and Seismic Provisions 41 5.1 Terms of Reference of the Subgroups 41 5.1.1 Subgroup: Materials 41 5.1.2 Subgroup: Structure 42 5.1.3 Subgroup: Construction 42 5.1.4 Subgroup: Earthquake Engineering 43 5.2 Terms of Reference of Individual Consultants 44 5.2.1 Subgroup: Materials 44 5.2.2 Subgroup: Structure 45 5.2.3 Subgroup: Construction 47 5.2.4 Subgroup: Earthquake Engineering 48 5.3 List of Collected Documents 49 5.4 List of documents to be collected 50 5.5 Preliminary Review of Documents and Tentative Structure of the Code for Materials Subgroup 51 5.5.1 Preliminary Review of Collected Documents 51 5.5.2 Preliminary Review of BNBC 1993 52 5.5.3 Tentative Structure of Relevant Part of the Code 53 5.6 Preliminary Review of Documents and Tentative Structure of the Code for Structural Engineering 53 5.6.1 Preliminary Review of Collected Documents 53 5.6.2 Preliminary Review of BNBC 1993 58 5.6.3 Tentative Structure of relevant part of the code 59 5.7 Preliminary review of documents and tentative structure of the code for Construction practices 61 5.7.1 Preliminary review of the collected documents 61 5.7.2 Review of the BNBC 1993 63 5.7.3 Tentative structure of relevant part of the code 63 5.8 Preliminary review of documents and tentative structure for Seismic provisions 64 5.8.1 General 64 5.8.2 Preliminary Review of Collected Documents 64 5.8.3 Review of BNBC 1993 66 5.8.4 Tentative Structure of the Relevant Part of the Code 67 Geotechnical Engineering 69 6.1 Terms of Reference of the Group 69
  6. 6. vi 6.2 Terms of Reference of Individual Consultants 69 6.3 List of Collected Documents 69 6.4 List of Documents to be Collected 70 6.5 Preliminary Review of Collected Documents 70 6.6 Preliminary Review of BNBC 1993 71 6.7 Tentative Structure of the Relevant Part of the Code 73 Building Services 74 7.1 Fire Protection 74 7.1.1 Terms of Reference 74 7.1.2 List of Collected Materials 74 7.1.3 List of Documents to be Collected 75 7.1.4 Preliminary Review of Collected Documents 75 7.1.5 Review of the BNBC 1993 76 7.1.6 Tentative Structure of Relevant Part of the Code 76 7.2 HVAC, Lifts, Escalators and Moving Walks 76 7.2.1 General 76 7.2.2 Terms of Reference of the Consultant 77 7.2.3 List of Collected Documents : 77 7.2.4 List of Documents to be Collected 77 7.2.5 Preliminary Review of Collected Documents 78 7.2.6 Preliminary Review of BNBC 1993 78 7.2.7 Tentative Structure of Relevant Part 80 7.3 Electrical Engineering 81 7.3.1 Terms of Reference of the Subgroup 81 7.3.2 List of Collected Documents 82 7.3.3 List of Documents to be Collected 82 7.3.4 Preliminary Review of Collected Documents 83 7.3.5 Review of BNBC 1993 83 7.3.6 Tentative Structure of Relevant Part of the Code 87 7.4 Fuel and Gas Supply 88 7.4.1 Terms of Reference of the Consultant 88 7.4.2 List of Collected Documents 88 7.4.3 List of Documents to be Collected 88 7.4.4 Preliminary Review of Collected documents 89 7.4.5 Review of BNBC 1993 89 7.4.6 Tentative Structure 89 7.5 Water Supply and Sanitation 89 7.5.1 Terms of Reference of the Sub-group 89 7.5.2 Terms of Reference of Individual Consultants 90 7.5.3 List of Collected Documents 90 7.5.4 List of Documents to be Collected 90 7.5.5 Preliminary Review of Collected Documents 90 7.5.6 Preliminary Review of BNBC 1993 91 7.5.7 Tentative Structure of Relevant Part of the Code 94
  7. 7. vii 7.6 Information Technology 94 7.6.1 Terms of Reference of the Consultant 94 7.6.2 Collection of Documents 95 7.6.3 Tentative Structure of Relevant Part of the Code 95 Tentative Structure and Table of Contents of the Updated Code 96 8.1 Tentative Structure of the Updated Code 96 8.2 Summary Table of Contents of the Updated Code 96 8.3 Tentative Table of Contents of the Updated Code 99
  8. 8. 1 INTRODUCTION 1.1 GENERAL In order to provide safe and healthy habitat, all activities related to building construction such as planning, design and construction needs to be regulated properly. Technological and socio-economic developments in recent times have led to remarkable increase in demand for more and more sophistication in buildings resulting in ever increasing complexity. Buildings are products of a multi-disciplinary profession involving specialized professional inputs from disciplines like Architecture, Fire prevention, Materials science, Structural engineering, Geotechnical engineering Construction technology, Electrical engineering, Mechanical engineering, Acoustics, Sanitation and plumbing technology, Chemical engineering, Law, etc. It is therefore imperative that a uniform standard of practice covering all aspects of planning, design and construction of buildings, including the service facilities provided in it such as electrical, mechanical, sanitary and other services, be followed to ensure safety, minimization of wastage in construction and optimum return for the user. In the Building code each of the above aspects are addressed adequately by professionals specializing in the relevant disciplines to ensure safety and comfort of the users of the buildings. In order to regulate the technical details of building construction and to maintain the standard of construction the Bangladesh National Building Code (BNBC) was first published in 1993. It is a 1000 page detailed document specifying safe and acceptable practices in all aspects of building design and construction. However, since its publication, significant changes and developments have taken place in both building technology and material properties requiring the use of the present state of the art knowledge and practices in building planning, design and construction. To keep pace with the changed circumstances, it is a routine practice to update codes. Sixteen years have elapsed since publication of the code. Therefore time is, appropriate for updating of the Bangladesh National Building Code. After introduction of the BNBC in 1993, the technology of building construction in Bangladesh remained almost the same for quite some time as was in practice before its publication. The lack of legal provisions in enforcing its use has been the main reason behind it. In the meantime growing demand for home, scarcity of land and the upward trend in the land prices in the urban areas brought in the culture of construction of moderate to high rise structures and changed the prevailing culture of planning, design and construction of buildings in the private sector. Gradually, the urban dwellers began to accept the concept of living in high rise apartment building and investment in the housing sector turned out to be a profitable business. As a result building construction activities were taken up by real-
  9. 9. 2 estate developers following which new trends developed in building planning and construction. Some real-estate developers engaged professional people such as Architects, Planners, Engineers to make their buildings more attractive to the buyers and the code started finding its use among the professionals. However, some owners and developers retained the habit of the old method of construction giving rise to unplanned growth of structures in the urban areas. During this time some high rise structures failed to perform satisfactorily due to structural failure / fire hazard which caused alarm among the urban dwellers as well as the policy makers. The policy makers, therefore felt the urgency of updating the BNBC 1993 to make its contents time worthy and also to bring it under strict legal coverage to make its provisions binding to all involved in the planning, design, construction and use. 1.2 BACKGROUND At the onset of a new decade in the second millennium, the Government of Bangladesh has taken up the task of updating the acts, regulations and the code related to building construction. The building construction sector was first brought into a legal framework through enactment of Building Construction Act 1952. By the power given by the Act, the Government of Bangladesh has promulgated regulations which were amended from time to time. In 2006 the Building Construction Act was amended to include a new Section 18A empowering the Government to promulgate the Building Code as a legally binding document. Since its publication, BNBC 1993 has been referred to and consulted by the professionals and designers in the field of building design and construction. After the endowment of legal status, importance of the BNBC 1993 has further enhanced. However, unlike other building codes available in the world, the Bangladesh National Building Code has not yet been formally reviewed and updated since it was drafted in 1993. Neither any feedback of the professionals regarding the document has been taken into formal consideration. In the last sixteen years, new materials have been introduced, new scientific methods have emerged, new technologies have evolved and both design of structures and construction practices have gone through enormous changes. Researchers, engineers and academics in Bangladesh have also conducted new studies which enrich our knowledge about planning, design, construction and sustainability of buildings. Ministry of Housing and Public Works formed a steering committee with the responsibility of Updating BNBC 1993 by a G.O. having circular no. Section 8/IM-5/93(part) 812 (28) date: 15.09.2008. The Steering Committee comprises representatives from relevant government agencies, universities and professional societies. The Housing and Building Research
  10. 10. 3 Institute (HBRI) has been entrusted with the task of providing secretarial service to the Steering Committee and managing the implementation of the project. In response to a Request for Proposal (RFP) from HBRI, Bureau of Research, Testing and Consultancy (BRTC) of Bangladesh University of Engineering and Technology (BUET) submitted Technical and Financial Proposals for updating BNBC 1993. Consequently an agreement (Appendix A) was signed between HBRI and BRTC, BUET on 15th December 2009. According to the agreement BRTC, BUET has to review and update the Bangladesh National Building Code 1993, the Building Construction Act 1952 and the Administrative arrangement and implementing provisions within 12 months. BRTC, BUET has deputed leading experts in all relevant fields from both inside and outside of BUET. Finally the updated code and act will be available both in printed form and soft copy in CDs and on website. 1.3 OBJECTIVES The main objective of the project is to revise and update the provisions of Bangladesh National Building Code to keep pace with present needs. The Building Code is now implemented under cover of the Act of 1952. More than half a century has however elapsed since promulgation of the Act and a significant degree of progress has been achieved in building construction sector during this period. This calls for review and amendment/updating of the Act itself. Besides, in order to ensure compliance of the Building Code by all concerned and effective enforcement of the Act, an effective and achievable Administrative Arrangement must be worked out at all levels. Thus the work will comprise the following three components: • Review, revision and updating of the Bangladesh National Building Code 1993 to bring it at par with the present state-of-the-art paying due consideration to local needs and practices. • Review of the Act with the latest amendments and preparation of draft of an amended/updated version of the Act for consideration of enactment by competent authority. • Review of present administrative arrangement for implementing the provisions of the Act at various levels; rural, union, upazila, district and metropolitan, for both private and government developments. Recommendation of an effective yet achievable administrative arrangement to ensure compliance of the Building Construction Act at all levels.
  11. 11. 4 1.4 SCOPE OF SERVICES The project will yield three distinct outputs as described above in separate submissions. To achieve this goal, the following tasks will be performed by the Consultant: • Collection and review of codes and standards of neighbouring as well as other developed countries; • Review of Internationally recognized Building Standards and Codes; • Review of updated standards of building materials and services issued by the Bangladesh Standards and Testing Institution (BSTI); • Review of related laws like fire, environment etc. that have already been introduced or updated or are expected; • Present version of the Bangladesh National Building Code (BNBC) prepared in 1993 has ten distinct parts addressing different aspects of building construction and building services with cross references as necessary. These are; Part 1: Scope and Definitions Part 2: Administration and Enforcement Part 3: General Building Requirements, Control and Regulation Part 4: Fire Protection Part 5: Building Materials Part 6: Structural Design Part 7: Construction Practices and Safety Part 8: Building Services Part 9: Alteration, Addition to and Change of Use of Existing Buildings Part 10: Signs and Outdoor Display Review of each of the above parts and give due consideration to changes required in the structure and content of the code as well as inclusion of issues like building security & planning, renewable energy, rain water harvesting etc.; • Formulation of ways and means for making BNBC more effective in terms of acceptability, ease of application, and un-ambiguity keeping in view the socio- economic aspects of the country; • Critical examination and review of each Section of the present Building Code and reformulation of the provisions as necessary in consideration of the new legislative status of the Code; • Preparation of a draft of the recompiled code for public review; • Incorporation of commentary on important sections of the code, if necessary; • Arrangement of Seminars/Workshops to gather views of relevant professionals and feedbacks from existing BNBC users;
  12. 12. 5 • Arrangement of Seminars/Workshops on the revised draft to gather views of relevant professionals and feedbacks before finalization of the Update BNBC; • Incorporation of the results of review and editing of the recompiled code by national level experts forming various editorial committees; • Preparation of appropriate reference aids such as Index and detailed Table of Contents; • Selection of appropriate printing layout and format from consideration of utility and convenience of different user groups of the Code; • Preparation of electronic form of the approved Code with appropriate index/search facility and making it available for download from a government website; • Review of the Act in the light of present needs and examination of its suitability for enforcing the provisions of Building Code; • Preparation of draft of an updated version of the Act, submission of the draft for review by an editorial board comprising legislative experts, finalisation of the edited draft Act, submission of the draft Act for consideration of the Ministry of Law, Justice and Parliamentary Affairs for enactment by competent constitutional authority; • Review of administrative provisions of the Building Code vis-à-vis the present administrative machinery and structure of the Government concerned with implementation and enforcement of legal provisions and suggest changes, if necessary ; • Formulation of an administrative procedure necessary for effective implementation of the updated Building Code in the light of its new legal status, and recommendation for formulation of a nationally applicable institutional arrangement for enforcement of provisions of the Building Code. 1.5 SCOPE OF THE REPORT The inception report provides an outline of the updated code along with an overall structure of the project management. The report also presents a review of the existing code and other collected documents conducted in the first seven weeks of the project. The following points are specifically elaborated in the report: • Preliminary review of present code and other collected data/information • A draft of the Table of Contents of the Revised Code • Detailed work plan • Proposed schedule for deployment of personnel The inception report contains eight chapters. Chapter 1 presents the background, objectives and scope of the project. Chapter 2 gives an account of the methodology, management structure, work plan and personnel deployment schedule of the project. Terms of references
  13. 13. 6 of different Groups and individual Consultants, lists of documents collected and other required documents and preliminary reviews of the collected documents and the BNBC 1993 are presented in a group wise manner in Chapters 3 to 7. Finally a tentative structure and Table of Contents of the revised code is proposed in Chapter 8.
  14. 14. 7 WORK PLAN 2.1 METHODOLOGY The tasks of the present assignment will be carried out keeping in view of the quality of services and the time frame provided for completion of the assignment. The quality of services will be ensured by employing specialists in each area of the Code, Act and the Administrative arrangement for detail review and updating. Feedback on the updated Code and the Act will be obtained from the whole cross-section of the end-users and stakeholders. The assignment will be realized following the methodology of input-process-output- review-final output basis (Fig. 2.1). 2.1.1 INPUTS The inputs for updating the Code will be gathered from the following: • Examining the existing code • Reviewing other documents like building codes, standards etc. available around the world • Feed-back from the end-users of the present code Above mentioned methods are elaborated in the following sections. EXAMINING THE EXISTING CODE The overall structure as well as every detail of the existing code will be revisited. For this purpose a soft copy of the existing code has been produced. Each part of the code will be reviewed by each group of consultants during the review process. Clauses that require modification and improvement will be identified and Lapses and laggings will be pointed out with specific suggestions for improvement. The method of inclusion of newer topics and their relation to the existing clauses of the existing code will also be examined. General issues like planning, environment, administration and legislation will be reviewed in respect of prevailing regulations concerning land use and building construction and environmental guidelines which are in use. Both old and newly introduced construction materials may need to be discussed at appropriate chapters in a coherent manner. Using recent statistics, design loads may need reevaluation. New issues like climate change and geo-hazard have to be addressed with proper relevance.
  15. 15. 8 Fig. 2.1: Schematic diagram showing the methodology for updating the code Inputs • Review of the present code • Review of other codes and standards • Feedback from the end- users Process Compilation of the input and feedbacks and updating the code in a coordinated manner Output Revisions to the provisions of the code presented in ‐ Inception report ‐ Interim report ‐ Draft Review • By the steering committee • By the editorial committee and national panel of experts • By Designers, Professionals and other end-users and stake- holders Final Output Revisions to the provisions of the code presented in the form of ‐ Hardcopy ‐ Electronic copy ‐ Website
  16. 16. 9 REVIEWING OTHER DOCUMENTS Prevailing buildings codes and standards of other countries will be reviewed and compared with the BNBC 1993. For this purpose current important codes and standards like IBC 2009, Euro Code, ACI 318-08, ASCE 7-05 etc. have been collected. National Building Code of India 2005 has already been collected and codes of other neighbouring countries are in the process of collection. BUET being the premier technical university in the country has a rich library with many reputed journals and proceedings which will be consulted for review. Indigenous knowledge developed through research and practice by local researchers and professionals will also be sought out through a survey and inclusion of the findings will be explored. FEEDBACK FROM END USERS/STAKEHOLDERS At different stages of the preparation of the Updated version of the BNBC 1993 the outputs will be submitted for examination / scrutiny by the end users / stakeholders for suggestions and guidance for improvement of the material content and quality of the materials included in the context of up-to-date building design, availability of material and construction practices prevailing in the building sector. Such inputs from the end uses / stakeholders will be obtained in five stages which are shown in Fig.2.1. It is hoped that multiple interactions with the end users / stake holders will enable the consultants to develop the updated BNBC maintaining its quality at par with other reputed codes. 2.1.2 PROCESS The assignment of updating the BNBC 1993 will be conducted in a coordinated manner so that the tasks are completed in due time and the milestones of the project are properly achieved. For this purpose review and updating in the different areas of the Code will be simultaneously carried out. Coordination of the interrelated areas will be achieved through the contribution of the coordinator. The collected information will be compiled and an outline of the up-date requirements will be prepared. After review and approval, the outline will be detailed and appropriate contents will be prepared. 2.1.3 OUTPUTS Before delivering the final output, interim outputs will be produced through three reports: Inception report, Interim report and Draft documents. A detailed work plan and preliminary review of BNBC 1993 and other collected documents are presented in the inception report. The interim report will contain a complete review of the BNBC 1993, the Building Construction Act and the existing administrative and institutional arrangement for enforcement of the Code. The interim report will also provide an outline of the updated Code, the revised Act and the revised administrative arrangement for enforcing the Code. In
  17. 17. 10 the Draft documents the feedbacks from National Workshops, Steering Committee and Editorial Committees will be incorporated. 2.1.4 REVIEW The outputs of the present project will be reviewed at five different stages. The initial outline of the Code, Act and Administrative arrangement presented in the Inception report will be reviewed by the users of the BNBC 1993 at a day-long National Workshop. The Editorial Committees will examine the Interim report. Draft of the Code, Act and Administrative arrangement will first be discussed at a National Workshop and then be reviewed by the Editorial Committees. Based on the feedbacks from these reviews the final manuscript will be prepared and approval will be obtained from the Editorial Committees. 2.1.5 FINAL OUTPUT Finally the Code, the Act and the document for administrative arrangement for enforcing the Code will be produced in printable format. Electronic copies of these documents will also be made available in CD. The electronic format of the Code, the Act and the document for the administrative arrangement for enforcing the Code will be uploaded to a government website. 2.2 ORGANIZATION AND MANAGEMENT 2.2.1 ORGANIZATION A team of 33 Consultants have been deployed for Updating BNBC 1993. The team of Consultants is headed by the Team Leader who guides and supervises the members for an efficient and smooth completion of the assignment. He also interacts with the client on behalf of the team. The Coordinator facilitates interaction among different groups of Experts and support staff. The entire process is monitored by the Team Leader. The team will comprise of Experts from the following disciplines: Architecture Planning Fire Materials Geotechnical Engineering Structural Engineering Construction Practices and Safety Earthquake Engineering Heating, Ventilation, Air Conditioning, Lifts, Escalators and Moving Walkways
  18. 18. 11 Electrical Engineering Fuel and Gas Supply Environmental Engineering Plumbing Information Technology Administration Law and legislation The team composition and responsibilities of each member are shown in Table 2.1. The organization chart is shown in Fig. 2.1. Fig. 2.1: Organization Chart Steering Committee HBRI Director, HBRI BUET Department of Civil Engineering Team Leader Experts: Architects Planners Fire Experts Materials Engineers Geotechnical Engineers Structural Engineers Construction Engineers Earthquake Engineers HVAC, Lifts & Escalators and Moving Walkways Expertt Electrical Engineers Fuel and Gas Supply Expert Environmental Experts Plumbing Engineers IT Expert Administrative Expert Legal Expert CoordinatorSupport Staff
  19. 19. Table 2.1: Team Composition and Task Assignments OFESSIONAL STAFF Name of Staff Firm/Organisation Area of Expertise Position Assigned Task Assigned of. Md. Hossain Ali BRTC, BUET Geotechnical/earth quake engineering Team Leader Responsibilities for overall technical, adminis and financial management of the p coordination of activities of different disc liaison with client and relevant agencies; act principal author and editor of the consu organize and finalize various reports documents; chief resource person of worksho Raquib Ahsan BRTC, BUET Structural engineering Coordinator Review and revision of general structural requirements, liaison with client, relevant ag and team leader of. Md. Shahidul Ameen BRTC, BUET Architecture Senior Architect 1 Review and redrafting of general b requirements, control and regulation of. Zebun Nasrin med BRTC, BUET Lighting/Arch. Senior Architect 2 Contribute to general building requirements, and update of and lighting requirements h. Ziaul Islam Asia Pacific University Architecture Architect Review and redrafting of general b requirements, control and regulation of. Rokhsana Hafiz BRTC, BUET Urban and Regional Planning Senior Planner Planning aspects of the building. of. Nizamuddin Ahmed BRTC, BUET Fire/Architecture Senior Fire Expert Contribute to general building requirements, and revision of the fire protection and ac requirements Selim Newaz Bhuiyan --- Fire Fire Specialist Review and revision of the fire pro requirements of. Muhammad Zakaria BRTC, BUET Materials/Transport ation Engineering Senior Materials Engineer Review and updating of provisions relat building materials of. Munaz Ahmed Noor BRTC, BUET Materials/Structural Engineering Materials Engineer Review and updating of provisions relat building materials of. Syed Fakhrul een BRTC, BUET Geotechnical Engineering Senior Geotech. Engineer 1 Review and updating of foundation provisions
  20. 20. OFESSIONAL STAFF Name of Staff Firm/Organisation Area of Expertise Position Assigned Task Assigned of. Abu Siddique BRTC, BUET Geotechnical Engineering Senior Geotechnical Engineer 2 Review and updating of foundation provisions of. Mohammed Kabirul am BRTC, BUET Geotechnical Engineering Geohazard Engineer Review and update provisions regarding geoh Md. Shariful Islam BRTC, BUET Geotechnical Engineering Geotechnical Engineer Review and updating of foundation provisions of. A. M. M. Taufiqul war BRTC, BUET Civil/Structural Engineering Senior Structural Engineer 1 Review and revision of general structural requirements, loads, structural design in materials, detailing of. Ahsanul Kabir BRTC, BUET Civil/Structural Engineering Senior Structural Engineer 2 Review and revision of general structural requirements, loads, structural design in stressed concrete, detailing of. Khan Mahmud anat BRTC, BUET Civil/Structural Engineering Senior Structural Engineer 3 Review and revision of general structural requirements, loads, structural design in detailing Raquib Ahsan BRTC, BUET Civil/Structural Engineering Structural Engineer Review and revision of general structural requirements, loading, structural dyn detailing, coordination with team leader A. F. M. Saiful Amin BRTC, BUET Civil/Structural Engineering Structural Engineer Review and revision of general structural requirements, loads, masonry and timber stru detailing of. Md. Shafiul Bari BRTC, BUET Civil/Structural Engineering Senior Construction Engineer Review and updating of construction practi safety provisions gr. Sabbir Siddiquee DPM Civil/Structural Engineering Construction Engineer Review and updating of construction practi safety provisions of. Tahmeed M. Al- ssaini BRTC, BUET Earthquake/Geotec hnical Engineering Senior Earthquake Engineer Review and revision of earthquake zoning, lo design and detailing requirements of. Tahsin Reza ssain BRTC, BUET Civil/Earthquake Engineering Earthquake Engineer Review and revision of earthquake zoning, lo design and detailing requirements
  21. 21. OFESSIONAL STAFF Name of Staff Firm/Organisation Area of Expertise Position Assigned Task Assigned gr. Belal Ahmed --- HVAC, Lifts, Escalators etc Senior Mechanical Engineer Review and updating of provisions related to lifts, escalators and mechanical services protection equipment and arrangements of. Saiful Islam BRTC, BUET Electrical Engineering Senior Electrical Engineer Review and updating of electrical installatio wiring requirements . Shaikh Anowarul tah BRTC, BUET Electrical Engineering Electrical Engineer Review and revision of electrical requirements of. A. K. M. A. Quader BRTC, BUET Fuel and Gas Supply Senior Chemical Engineer Review and updating of gas supply provisions of. Farooque Ahmed BRTC, BUET Civil/Environmental Engineering Senior Plumbing Engineer Review and updating of water supply, draina sanitation requirements, fire protection, plu provisions gr. Azizul Hoque, Eng. PWD Civil/Water Supply Engineering Plumbing Engineer Review and updating of water supply, draina sanitation requirements, fire protection, plu provisions of. Md. Mujibur Rahman BRTC, BUET Environmental Engineering Senior Environmental Experts Review and revision of environmental aspe code provisions of. Md. Delwar Hossain BRTC, BUET Environmental Engineering Senior Environmental Experts Review and revision of environmental aspe code provisions Saiful Alam --- Administrative and Institutional Expert Senior Administrative Expert Review of administrative arrangement of b approval process throughout the c formulation of an institutional and adminis arrangement for nationwide enforcement o provisions Md. Asaduzzaman Southeast University Law and Legislature Senior Legislative Expert Review of building construction act, re regulations, bylaws and practices, identifica deficiencies and inadequacies of these preparation of updated draft of the Act Md. Humayun Kabir BRTC, BUET IT Specialist IT Expert Formulation of index linked search mechani code soft copy, uploading to specified gove web site
  22. 22. 15 2.2.2 MANAGEMENT The team of Consultants have been divided into five groups for management of the project. A Group Leader has been assigned to each group for coordination within the group and for interaction with the Team Leader. The groups are: Group 1: Planning, Environment, Administration and Legislation Group (Acronym: PEAL) Group Leader: Prof. Md. Mujibur Rahman Group 2: Architecture (Acronym: Arch) Group Leader: Prof. Md. Shahidul Ameen Group 3: Materials, Structure, Construction and Earthquake Engineering (Acronym: MSCE) Group Leader: Prof. A.M.M. Taufiqul Anwar Group 4: Geotechnical Engineering (Acronym: Geo) Group Leader: Prof. Syed Fakhrul Ameen Group 5: Building Services (Acronym: BS) Group Leader: Prof. Md. Hossain Ali Division of groups and the relevant parts of BNBC1993 assigned to the groups are shown in Fig. 2.2. Names of the members of each group are provided in the following sections. PEAL GROUP Planning Expert : Prof. Roxana Hafiz Environmental Experts: Prof. Md. Mujibur Rahman (Group Leader) Prof. Md. Delwar Hossain Administration Expert: Mr. Saiful Alam Legislation Expert: Mr. Md. Asaduzzaman
  23. 23. ARCH MSCE Par GROUP Architectu Pro Pro Arc E GROUP Materials E Pro Pro Structure E Pro Pro Pro Dr. Dr. Constructi Pro rts of BNBC Fig.2.2: Di re Experts: of. Md. Shah of. Zebun Na ch. Ziaul Isla Experts: of. Muhamm of. Munaz Ah Experts: of. A. M. M. T of. Ahsanul K of. Khan Mah . Raquib Ahs . A. F. M. Sai ion Experts: of. Md. Shafi 1993 vision of Gr idul Ameen asreen Ahme am ad Zakaria hmed Noor Taufiqul Anw Kabir hmud Amana san iful Amin ul Bari oups of the (Group Lead ed war (Group L at Team of Co der) Leader) nsultants 16
  24. 24. 17 Engr. Sabbir Siddiquee Earthquake Engineering Experts: Prof. Tahmeed M. Al-Hussaini Prof. Tahsin Reza Hossain GEO GROUP Geotechnical Engineering Experts: Prof. Syed Fakhrul Ameen (Group Leader) Prof. Abu Siddique Prof. Mohammed Kabirul Islam Dr. Md. Shariful Islam BS GROUP Fire Design Experts: Prof. Nizamuddin Ahmed Mr. Selim Newaj Bhuiyan Mechanical Engineering / HVAC Expert: Engr. Belal Ahmed Electrical Engineering Subgroup: Prof. Saiful Islam Dr. Shaikh Anowarul Fattah Chemical Engineering / Gas Supply Expert: Prof. A. K. M. A. Quader Water Supply and Sanitation Engineering Subgroup: Prof. Farooque Ahmed Engr. Syed Azizul Hoque, P.Eng. Group Leader: Team Leader Prof. Md. Hossain Ali 2.3 WORK SCHEDULE The objectives of the project will be achieved through 16 activities as shown in the Work Schedule presented in Table 2.2. Table 2.3 shows the project milestones. The activities are planned focusing the following reporting milestones: Submission of Inception Report: 7th February 2010
  25. 25. 18 Submission of Interim Report: 7th May 2010 Submission of Draft Code, Act, Administrative arrangement: 21st August, 2010 Submission of Final Manuscripts: 15th November 2010 Uploading of Electronic versions to the Web: 7th December 2010 2.4 PERSONNEL DEPLOYMENT SCHEDULE All 33 Consultants of the project has already been formally mobilized at the beginning of the project. All of them have participated in preparation of the Inception Report. The Consultants will be deployed on an intermittent and part-time basis. They will provide their inputs for achieving the milestones mentioned above. Thus they will be deployed throughout the duration of the project. Depending on the volume of their contributions the person-months vary. The staffing schedule is shown in Table 2.4.
  26. 26. Table 2.2: Work Schedule ription of ity Date15/12/09 15/01/10 15/02/10 15/03/10 15/04/10 15/05/10 15/06/10 15/07/10 15/08/10 15/09/10 15/10/10 tion of codes and ards from other ies w of BNBC'93 and and standards of countries ration and ssion of Inception t ssion with the users sent Code at al Workshop ration of Interim t outlining the ed Code ssion with Editorial ittees and tance of Interim ration of Draft Act and istrative ration of materials tional Workshop ntation and sion on Draft Code onal Workshop w of the Drafts by ctive Editorial ittees ation and approval Drafts ration of Final script of Code with and in printable val of Final script ration of electronic f the Code g of the Code ration of CD and ding to website
  27. 27. Table 2.3: Project Milestones cription of Activity Date 15/12/09 15/01/10 15/02/10 15/03/10 15/04/10 15/05/10 15/06/10 15/07/10 15/08/10 15/09/10 15/10/10 estones tion Report nal Workshop on Existing Code m Report outlining the updated Code, Act and Administrative gement nal Workshop on Draft Code Manuscript of the Code ading to web
  28. 28. Table 2.4: Staffing Schedule No. Name of Staff Staff-month input by month Total staff- month input 1 2 3 4 5 6 7 8 9 10 11 12 1. Prof. Md. Hossain Ali 12 2. Dr. Raquib Ahsan 3 3. Prof. Md. Shahidul Ameen 3 4. Prof. Zebun Nasrin Ahmed 3 5. Arch. Ziaul Islam 3 6. Prof. Rokhsana Hafiz 2 7. Prof. Nizamuddin Ahmed 3 8. Mr. Selim Newaz Bhuiyan 3 9. Prof. Muhammad Zakaria 2 10. Prof. Munaz Ahmed Noor 2 11. Prof. Syed Fakhrul Ameen 2 12. Prof. Abu Siddique 2 13. Prof. Mohammed Kabirul Islam 1.5 14. Dr. Md. Shariful Islam 2
  29. 29. No. Name of Staff Staff-month input by month Total staff- month input 1 2 3 4 5 6 7 8 9 10 11 12 15. Prof. A. M. M. Taufiqul Anwar 3.5 16. Prof. Ahsanul Kabir 3.5 17. Prof. Khan Mahmud Amanat 3.5 18. Dr. Raquib Ahsan 3 19. Dr. A. F. M. Saiful Amin 3 20. Prof. Md. Shafiul Bari 3 21. Engr. Sabbir Siddiquee 2 22. Prof. Tahmeed M. Al-Hussaini 3 23. Prof. Tahsin Reza Hossain 3 24. Engr. Belal Ahmed 3 25. Prof. Saiful Islam 2 26. Dr. Shaikh Anowarul Fattah 2 27. Prof. A. K. M. A. Quader 1 28. Prof. Farooque Ahmed 1 29. Engr. Azizul Hoque, P.Eng. 1
  30. 30. No. Name of Staff Staff-month input by month Total staff- month input 1 2 3 4 5 6 7 8 9 10 11 12 30. Prof. Md. Mujibur Rahman 1 31. Prof. Md. Delwar Hossain 1 32. Mr. Saiful Alam 3 33. Mr. Md. Asaduzzaman 3 34. Dr. Md. Humayun Kabir 2
  31. 31. 24 PLANNING, ENVIRONMENT, ADMINISTRATION AND LEGISLATION 3.1 TERMS OF REFERENCE OF THE GROUP a. Review of relevant codes and other related documents. b. Review of the existing codes/acts/bylaws and proposal for modifications/corrections/changes required. c. Devise ways and means to ensure application of the updated BNBC in all kinds of building construction both under the public and private sector domain and individual level. d. Suggestions for making the lawful and responsible agencies to be really active to apply updated code at all levels of building construction from central to the village level. e. Suggestions for making the lawful and responsible agencies for execution of the code at different levels. f. Collection and review of various codes related to environmental influencing factors. g. Identification of environmental factors relevant to Bangladesh. h. Identification and Incorporation Environmental Planning in the process of presentation of Waste disposal, presentation of Heritage Sites and Monuments, Transportation System and Land use Planning, Infrastructure, Utility, Water Supply, Sub-Station, Residential, Commercial and Industrial Development etc. i. Preliminary analysis of environmental factors and incorporation at appropriate sections of the updated code. j. Recommendations for proper enforcement of the codes/acts/bylaws/rules and regulations. 3.2 TERMS OF REFERENCE OF INDIVIDUAL CONSULTANTS Planning Expert- Prof. Roxana Hafiz a. Review of relevant codes and other related documents. b. To highlight those areas or factors which need to be taken into account when planning and developing an area e.g. Residential, Commercial and Industrial Development; Transportation System and land use Planning; Infrastructure and Utility; Water Supply; Sub-Station; Waste disposal; Heritage Sites and Monuments, etc. c. Assist the Group Leader in all related matters.
  32. 32. 25 Environmental expert- Prof. Md. Mujibur Rahman a. Act as Group Leader and maintain liaison with the Team Leader/Coordinator. b. Guide, supervise and coordinate the works of other professionals in the group. c. Identification of environmental factors relevant to Bangladesh. d. Interaction with other subgroups regarding analysis and incorporation of environmental influence in planning, design, construction of buildings. e. Assist the Team Leader in preparation of all reports. f. Assist the Team Leader in preparation of the materials for the workshop. g. Assist the Team Leader in preparation of the draft Code. Environmental expert-Prof. Md. Delwar Hossain a. Review all relevant items of BNBC, other codes and related documents. b. Collection and review of various codes for related environmental influencing factors. c. Identification of environmental factors relevant to Bangladesh. d. Interaction with other subgroups regarding analysis and incorporation of environmental influence in planning, design, construction of buildings. e. Assist the Group Leader. Administration Expert- Mr. Saiful Alam a. Gather both primary and secondary data/information to make such provisions under the updated code so that it really works as a guideline for building construction for all and the document is used as a National Document. b. Draw feedback and opinion from central to the grass root level to make the code functional. c. Collect relevant papers and documents for review. d. Make field visits on randomly selected territorial coverage. e. Review the latest updated code and find out the weakness and incorporate strong issues under the new one. f. Incorporate own observation, experiences and realistic views to make a really effective and functional document to administer and enforcement of building code. g. Provide input in the group for overall final report preparation. h. Assist the Group Leader in all related matters. Legislation Expert- Mr. Md. Asaduzzaman a. Review the enforcement mechanism of the present Bangladesh National Building Code along with the Building Construction Act, 1952. b. Compare the enforcement mechanism of the present Code with the Codes of other countries.
  33. 33. 26 c. Recommend effective enforcement mechanism. d. Assist the Group Leader and Team Leader. 3.3 LIST OF COLLECTED DOCUMENTS/INFORMATION i. The Building Construction Act, 1952 ii. The Bangladesh Labour Act, 2006 iii. The Pakistan Engineering Council Act, 1976 iv. The National Building Code of India, 2005 (Relevant Part) v. The Bangladesh National Building Code (Relevant Part) vi. The Bangladesh Code, Volume-XI containing the Building Construction Act, 1952. vii. The National Building Code of India, 2005 (Relevant part) viii. The Pakistan Engineering Council Act, 1976 3.4 LIST OF DOCUMENTS TO BE COLLECTED i. Engineering Council Acts along with relevant Rules of India, and the UK. ii. Leading decisions of the Supreme Court of Bangladesh relating to Building Construction Act and BNBC published in Law Journals like Dhaka Law Reports (DLR) including: • 42 DLR, Page 462 • 43 DLR, Page 187 • 44 DLR, Page 515 • 48 DLR(AD), Page 180 • 52 DLR, Page 461 • 52 DLR, Page 488 • 53 DLR, Page 35 • 56 DLR(AD), 16 iii. Articles of research journals, conference and seminar papers, newspapers reports from home and abroad iv. Relevant parts of Building Codes of some other counties. v. Website will be consulted to access to the data and information of other countries and their success experiences concerning admin and enforcement of building code. 3.5 PRELIMINARY REVIEW OF COLLECTED DOCUMENTS 3.5.1 PLANNING The preliminary requirement for any kind of activities and development, which brings out significant changes to land. Unplanned urbanization and urban development lead to
  34. 34. 27 wastage of land and other resources and consequently leading to problems like sprawl, pollution, congestion, threats, etc. which creates condition adverse to good and safe living. The Building Construction Rule thus requires that land and other resources be judiciously used to produce safe, sustainable and livable environment. To regulate development activities each country had to promulgate, formulate and implement laws in the form of Town and Country Planning Act addressing the issues of Town and country planning Act and similar documents collected for updating BNBC 1993 has been reviewed(but not limited to) – a) Urbanization and Urban Development, b) Integration of Urban Development with Regional Development, c) Housing, Industry, Commerce, Recreation and Leisure, etc. d) Building Construction Rules, e) Creation of Different kinds of Facilities, Utilities and Amenities, f) Protection from and control of different kinds of Pollution, g) Protection from and control of different kinds of Hazards, h) Resources Management, i) Heritages and Conservation, j) Agricultural Resource Management, k) Disaster Management, l) Tourism, Environment and Culture, etc. 3.5.2 ENVIRONMENT i. Indian Building Code (Part 10 & General Sections) provides some considerations on environmental factors and influences that will be further reviewed for possible consideration in the process of updating BNBC 2010. ii. Preliminary review of EuroCode, ENV. 1991-1: 1994, ENV. 1991-2: 1995, EuroCode- 2 related documents- DD ENV 1992-1-1: 1992, EN 1992-1-1: 2004 (E) considers various environmental influences and factors related to safety, durability of building materials and building construction that will be further reviewed for possible consideration in the process of updating BNBC 2010. 3.5.3 ADMINISTRATION AND LEGISLATION i. Part 2 of the National Building Code of India deals with the provisions regarding administration and enforcement. Section 1 of the Part begins with General provisions including scope, terminology, applicability of the Code and interpretation. Section 2 deals with organization and enforcement and section 3 deals with permit and inspecting. The Part is ended with some relevant Forms as annexes.
  35. 35. 28 ii. The Pakistan Engineering Council is a statutory body, constituted under the Pakistan Engineering Council Act, 1976 to regulate the engineering profession in the country. Its main statutory functions include registration of engineers, consulting engineers, constructors/operators and accreditation of engineering programmes run by universities/institutions, ensuring and managing of continuing professional development, assisting the Federal Government as think tank, establishing standards for engineering products and services besides safeguarding the interest of its members. In exercise of the power conferred by section 25 of the Pakistan Engineering Council Act. 1975, the Pakistan Engineering Council made by-law providing the provisions to the effect that construction of buildings in violation of the Building Code shall be considered as violation of professional engineering work as specified under clause (XXV) of section 2 of the Act. iii. The Building Construction Act, 1952 is an Act to provide for the prevention of haphazard construction of buildings and excavation of tanks which are likely to interfere with the planning of certain areas in Bangladesh. In view of section 3 of the Act no person shall, without the previous sanction of an Authorized Officer, construct or re-construct or make addition or alteration to any building, or excavate or re-excavate any tank within, the area to which this Act applies; and such sanction shall be subject to such terms and conditions as the Authorized Officer may think fit to impose. Such sanction shall remain valid for three years from the date of sanction and on the expiry of the period, the applicant shall have to apply for and obtain a fresh sanction. Section 12 of the Building Construction Act, 1952 provides punishment of imprisonment upto 7 years or fine not less than Tk. 50,000/= or both for constructing a building in contravention to any provision of the Bangladesh National Building Code. However, the offence is not treated as cognizable and non-bailable and no court is empowered to take cognizance of an offence except upon a complaint by the Authorized Officer in view of section 13 of the Building Construction Act, 1952. It is to be noted here that section 5 of the Act provides for compensation not exceeding the sum of two hundred and fifty rupees in case removal of building under construction! iv. The Bangladesh Labour Law, 2006 have provisions relating to social compliance. The law deals with the issues relating to employment of workers, relationship between workers and employers, compensation for injuries arising in the course of employment, health, safety, welfare and environment of working conditions, etc. It is the base line for minimum compliance and must be followed by all employers hiring labour’s for construction.
  36. 36. 29 3.6 PRELIMINARY REVIEW OF BNBC 1993 Bangladesh National Building Code (BNBC) of 1993 came into effect with a gazette notification issued on November 15, 2006. It has been made mandatory to comply with in any building construction under the Building Construction Act of 1952 to ensure accountability in the management of overall building construction and safety of the buildings. As per section 2.1 of chapter 2 of part 1 of the BNBC 1993 the Government is under obligation to establish a new or designate an existing agency responsible for the enforcement of this Code with a given area of jurisdiction. However, the Government is yet to set up any Code Enforcement Authority. Thus, absence of regulatory authority to care for all safety aspects of building as per BNBC is a major concern. The BNBC 1993 has dealt only with construction, structure, material, geo-technical, seismic aspects, etc. of development. The BNBC has left out the planning aspects of development as is evident from section (f). All these planning and development factors need to be incorporated in the BNBC, if it is to produce a safe and livable environment at all. Apparently existing BNBC, 1993 provides insignificant consideration on environmental influences on planning, design, construction and selection of construction material for buildings. In exercise of power under Section 18A of the Building Construction Act, 1952, the Government of Bangladesh made the Bangladesh National Building Code in 1993, which came into effect with a gazette notification issued on November 15, 2006. Section 2.6 of Part 2 of the BNBC only provides that violation of the Code will be an offence and the authority shall take legal action. However, it prescribes no procedure for institution of legal proceedings, which need to be addressed. In view of the above, the provisions of the Building Construction Act, 1952 along with the Code need to be updated considering the present socio-economic situation of the country. 3.7 TENTATIVE STRUCTURE OF THE UPDATED CODE Part 2 of the BNBC 1993, titled ‘Administration and Enforcement,’ covers the administrative and legal issues. Planning and Environmental issues are absent in the BNBC 1993. In the updated Code, Planning and Environmental issues will be included as separate chapters in Part 2. Thus Part 2 will be titled as ‘Planning, Environment, Administration and Legislation.’
  37. 37. 30 The chapter on Planning will focus on those areas or factors which need to be taken into account when planning and developing an area. The main objective is translated into more specific objectives as follows- i. Choosing appropriate sites for development, e.g. residential, commercial, industrial, recreation, etc. ii. Providing and preserving open spaces for recreation as well as for use as evacuation sites during emergencies, such as, fire, earthquake, etc. iii. Preserving sites that are ecologically sensitive and scenic or both. The BNBC needs to include the following features in the updated code, which are - a. Housing, Industry, Commerce, Recreation and Leisure, etc. b. Building Construction Rules, c. Provision of Different kinds of Facilities, Utilities and Amenities, d. Protection from and control of different kinds of Pollution, e. Protection from and control of different kinds of Hazards, f. Resources Management, g. Heritages and Conservation A separate chapter will deal with general considerations regarding water supply, sub- station, waste-disposal and environmental planning issues. Chapters regarding administration and legal issues will be recast with new titles: ‘Administration, Permit and Inspection’ and ‘Legal Proceedings’ to demarcate the administrative and legal issues more clearly.
  38. 38. 31 ARCHITECTURE 4.1 GENERAL The basis for the building-code development is to safeguard the health, safety and welfare of the public. The first and foremost goal of the building code is the protection of human life from the failure of life safety provisions in a building, or from structural collapse. There is also a strong component of property protection contained in code requirements. In accordance with that, the basic objective of the code remains same as stated in BNBC 1993. An additional aim in this revision will be to ensure sustainable development in all building and construction activity with a strong component towards the protection of energy reserves and environment. 4.2 TERMS OF REFERENCE OF THE GROUP a. Review of relevant codes and other related documents. b. Preparation of a list of terms, definitions, diagrams, abbreviations and acronyms in all parts of the proposed Code in alphabetical order. c. Classification of buildings based on occupancy and types of construction. Occupancy classification will include but not be limited to: • Residential (R1) • Housing (R2) • Educational (E) • Institutional (I) • Healthcare facilities (H) • Assembly (A) • Business (B) • Industrial/Factory (F) • Storage (S) • Hazardous (HZ) • Transportation (T) • Heritage Conservation (C) etc. d. Review of the existing codes/acts/bylaws and proposal for modifications/ corrections/changes required. e. Recommendation for incorporation of new categories (where and as necessary) f. Recommendations for proper enforcement of the codes/acts/bylaws/ rules and regulations. g. Review of provisions for signs and outdoor displays in other relevant codes.
  39. 39. 32 h. Recommendations for requirements of graphic signs and outdoor displays with regard to public, structural and other safety. 4.3 TERMS OF REFERENCE OF INDIVIDUAL CONSULTANTS Group Leader- Prof. Md. Shahidul Ameen a. Act as Group Leader and maintain liaison with the Team Leader/ Coordinator. b. Guide, supervise and coordinate the works of other professionals in the group. c. Assist the Team Leader in preparation of all reports. d. Assist the Team Leader in preparation of materials for the workshop. e. Assist the Team Leader in preparation of the draft Code. Group Member- Prof. Zebun Nasreen Ahmed a. Review all relevant items of BNBC 1993 and other codes and related documents and prepare a list of terms, definitions, abbreviations and acronyms. b. Classification and re-organization of existing Code to enhance co-relation and reduce scattering of information as per guideline of the TOR. c. Identification and eradication of contradiction of BNBC with other existing Building Rules or Acts d. Incorporation of new chapters (Housing, Conservation, Energy-efficiency, Accessibility etc.) in the proposed Code e. Assist the Group in all related matters. Group Member- Architect Ziaul Islam a. Review all relevant items of BNBC 1993 and other codes and related documents and prepare a list of terms, definitions, abbreviations and acronyms. b. Classification and re-organization of existing Code to enhance co-relation and reduce scattering of information as per guideline of the TOR. c. Identification and eradication of contradiction of BNBC with other existing Building Rules or Acts d. Incorporation of new categories (Housing, Conservation, Energy-efficiency, Accessibility etc.) in the proposed Code e. Assist the Group in all related matters.
  40. 40. 33 4.3 COLLECTION OF RELEVANT DOCUMENTS 4.3.1 INTRODUCTION An important step in the methodology for up gradation of the Code is the review of various codes, specifications, laws, acts, books, journals and other relevant published literature of Bangladesh and other countries. A large number of these documents have already been collected and are being reviewed. During the preliminary review, the Consultants felt the necessity of collecting and reviewing some more documents on related topics. The next two sections list the documents that have already been collected and those planned to be collected. 4.3.2 DOCUMENTS ALREADY COLLECTED CODES i. Bangladesh National Building Code (BNBC 1993) ii. International Building Code (IBC_2009) iii. National Building Code of India (NBCI_2005) iv. Building Code of China BUILDING/ LANDUSE LAWS/ BIDHIMALA/ ACTS i. Imarat Nirman Bidhimala, 1996 ii. Dhaka Mohanogor Imarat Nirman Bidhimala, 2008 iii. Chottogram Mohanogor Imarat (Nirman, Unnyon, Shongrokkhon o Oposharon) Bidhimala, 2008 iv. Beshorkari Abashik Bhumi Unnyon Nitimala, 2004 v. Dhaka Town Improvement (TI) Act vi. Bangladesh Environment Conservation Act 1995 BOOKS/ JOURNALS/ ARTICLES i. Correa (C.), The New Landscape- Urbanization in the Third World, MIMAR Book, Concept Media Ltd. (1989) ii. Bay (J.H.) and Ong (B.L.), Tropical Sustainable Architecture- Social and Environmental Dimensions, Architectural Press, London, USA (2006) iii. Thomson (C.W.) and Travlou (P.), Open Space People Space, Taylor & Francis Inc., USA (2007) iv. Jenks (M.) and Dempsey (N.), Future Forms and Design for Sustainable Cities, Architectural Press, London, USA (2007) v. RIBA, RIBA Book of British Housing, Architectural Press, London (2008)
  41. 41. 34 vi. Jenks (M.), Burton (E.) and Williams (K.), The Compact City- A sustainable Urban Form?, Taylor & Francis Inc., USA (2005) vii. Crosbie (M.J.), Multi-Family Housing- The Art of Sharing, Images Publishing, Australia (2003) viii. Towers (G.), At Home in the City, Architectural Press, London (2005) ix. Moughtin (C.) and Shirley (P.), Urban Design: Green Dimensions, Architectural Press, London (2005) x. Pfeifer (G.) and Brauneck (P.), Row Houses- A prospective Housing Typology, Birkhauser, Germany (2008) xi. Kobir (I.), Land Laws in East Pakistan Vol III, A Law House Publication (1969) 4.3.3 DOCUMENTS TO BE COLLECTED i. Building Code of Sri Lanka ii. Building Code of Malaysia iii. Building Code of Singapore iv. International Energy Conservation Code – most recent edition 4.4 PRELIMINARY REVIEW OF COLLECTED DOCUMENTS 4.4.1 INTRODUCTION The Architectural sub-group has identified Part 3 and Part 10 as the major focus area for this group along with minor correction to the rest of the parts of BNBC 1993. 4.4.2 PRELIMINARY REVIEW OF INTERNATIONAL BUILDING CODE (IBC_2009) The International building code 2009 is a model code of building regulations that safeguard the public health and safety in all communities, large and small. It is a modern, up-to-date set of regulations addressing the design and installation of building systems through requirements emphasizing performance. It is not the Code adopted by any particular country but, it offers an international forum for building professionals to discuss performance and prescriptive code requirements. This forum provides an excellent arena to debate proposed revisions. It was therefore considered important to review this code in the process of revision of the Bangladesh National Building Code. Below is a preliminary review of the IBC 2009, which is still ongoing, regarding issues that relate to the Section that is within the domain of the Architecture sub-team of the BNBC Review Team – namely those issues which have been covered under the General Requirements section of the existing BNBC.
  42. 42. 35 Building occupancy classification is according to first letter – F for factories, R for residential, etc. with usually smaller numbers indicating higher hazards F1, F2, etc CHAPTERS 4 TO 10 Most of the regulations given between Chapters 4 to 10 seem to be related to safety of occupants from hazards, particularly fire. Chapter 4 contains the requirements for protecting special uses and occupancies. However, the general requirements of the code still apply unless modified within the chapter. For example, the height and area limitations established in Chapter 5 (which deals with general height and area limitations with special reference to fire provisions) apply to all special occupancies unless Chapter 4 contains height and area limitations. In this case, the limitations in Chapter 4 supersede those in other sections. Chapter 6 is about types of construction and their interdependence on fire safety considerations which are determined through Tables showing the fire-resistance ratings of the principal structural elements. Chapter 7 is about fire and smoke protection features. Chapter 8 contains the performance requirements of interior finishes for controlling fire growth within buildings by restricting interior finish and decorative materials. Chapter 9 prescribes the minimum requirements for active systems of fire protection equipment. The requirements are based on the occupancy, and the height and the area of the building, because these are the factors that most affect fire-fighting capabilities and the relative hazard of a specific building or its portion. Chapter 10, Means of Egress, sets forth the general criteria for regulating the design of the means of egress, as the primary method for protection of people in buildings. Chapters 16 to 30, deal with structural design and related issues, and are outside the scope of the Architecture Group. CHAPTERS RELEVANT FOR THE ARCHITECTURE GROUP It is only in Chapter 11 that the issue of accessibility is addressed relating it to other issues than fire – for the physically challenged, etc – where it is stated that everything is required to be accessible. Chapter 12 deals with the Interior environment – stipulating minimum standards for the interior environment of a building – information regarding sizes and environmental variables. Specifications are given about spaces as well as the fabric. Chapter 13 is dedicated to energy efficiency – specifying minimum design requirements for energy efficiency. Architectural and constructional details about the design of building envelopes are referred to the IECC. The requirements here are not mentioned separately and need to be compliant with the International Energy Conservation Code (IECC). Such a chapter
  43. 43. 36 is not included in the present BNBC code, but with new emphasis on climate change and realization of the impacts of buildings on energy depletion, this is vital for sustainability. Chapter 14 deals with the composition of Exterior Walls for weather and fire protection and also includes balconies, eaves, decks and architectural trim, i.e. extensions from the superstructure. Chapter 15 codifies roof assemblies and rooftop structures, mainly dealing with weather-proofing, etc. Chapters 16 to 30, dealing with structural design and related issues, as mentioned above, are outside the scope of the Architecture Group and are therefore not discussed here. Chapter 31 contains a collection of regulations for a variety of unique structures and architectural features, eg pedestrian walkways and tunnels connecting two buildings, swimming pools and temporary structures, etc. Once again in Chapter 32, Encroachments into the Public Right-of-way – some structural – but some architectural decision making is addressed. Chapter 33 provides safety requirements during construction and demolition of buildings and structures. Chapter 34 Existing Structures – registered historic buildings. The chapter suggests alternative methods or reduced compliance requirements when dealing with existing building constraints, without compromising the minimum standards for fire prevention and life safety features. Chapter 35 on Referenced standards is organized in a manner that makes it easy to locate specific standards for the various issues in the code. There are A – K, on various issues, out of which Appendix E are on the Supplemental Accessibility Requirements that are not otherwise mentioned or mainstreamed throughout the code or in Chapter 11. SECTIONS RELEVANT TO THE ARCHITECTURE GROUP Though the sections related to fire escapes and planning of egress are related to Architectural planning and decisions, this section is being treated independently by a separate group and will not be included in this discussion. From the review of the IBC certain points that relate to the BNBC emerge and need to be included in its revision. These are: a. An independent chapter on energy efficiency which will specify passive architectural features that form minimum standards for buildings in different regions of Bangladesh. If possible carbon emissions can be related to the construction. This can
  44. 44. 37 include codes for inclusion of renewables within the framework of the energy consumption of the building. b. A chapter on modifications, extensions to existing buildings and their standards c. A chapter on conservation of heritage structures giving minimum codes in order to preserve the historic character of sites and the building structure. d. A chapter on landscaping, using and developing sites for safety and sustainability. 4.4.3 PRELIMINARY REVIEW OF NATIONAL BUILDING CODE OF INDIA (2005) A basic difference lies between BNBC 1993 and NBC of India 2005 in its organizational approach. The NBCI has taken the land-use plan as its basis for classification whereas in BNBC the basis is occupancy based building classification. The advantage of the NBCI is evident whenever settlement planning or housing or open space based developments are referred- community facilities, cultural facilities, sports and public open spaces are direct outcome of such provision in the Code, whereas no such provision lies within the BNBC. Approaching from the land-use plan the Indian code encompasses even construction in rural areas as well as preservation of natural resources as wetland, agricultural land etc. This approach seems highly relevant in a country like ours where land resource in comparison to population density is limited and the code apart from providing guidelines for building/ development should also focus on conservation of natural resources. The other advantage of the Indian Code is its recognition for old city built forms and further provision for its inclusion within the building code. Thus different typologies e.g. core type, row type, semi-detached type etc. gets validity and creates variety within the city fabric. Provisions for Heritage conservation is also highlighted in the Indian code. This may be helpful for formulation of guidelines for conservation in the Proposed Code. 4.4.4 PRELIMINARY REVIEW OF BUILDING CODE OF CHINA The Chinese Code focuses on making households suitable, safe and economical. It categorizes residential buildings into four distinct categories- low-rise, multi-rise, middle-high-rise and high-rise, which may be considered here as well. However the guidelines leads to some basic models that is very specific about minimum space standards especially for housings. There are strict codes for natural lighting provisions for each household. The specificity of the code is sometimes very
  45. 45. 38 meaningful as it is in the case of minimum kitchen size- the minimum size of a kitchen varies according to the type of fuel in use. (pipe gas or liquefied petroleum gas – 3.5m2, improved coal –m 4m2, raw coal – 4.5 m2, fire wood – 5m2) The Code may be helpful in certain areas e.g. provisions for sun light, building height classification, minimum space guidelines etc. 4.5 PRELIMINARY REVIEW OF BNBC-1993 The initial review of the existing building code reveals that a line by line scrutiny is required as some of the existing clauses need clarification, many clauses contradict with other existing building rules and the existing code is inadequate for certain relevant fields (e.g. housing, energy-efficiency, conservation, accessibility etc.). During this review there will be revisions, deletions and additions. The scope of work has therefore been marked as following: • Eradication of contradictions with other construction rules/acts (e.g. Dhaka Mohanogor Imarat Nirman Bidhimala 2008, Beshorkari Abashik Bhumi Unnoyon Nitinala 2004 etc.) • Classification and re-organization of the existing Code to enhance co-relation and to reduce scattering of information • Review of gap between objectives and practices of the Code • Incorporation of new Codes (e.g. Housing and settlement, Sustainability and Energy efficiency, Universal Accessibility etc.) The following observations have been made on different sections of Part 3 of the BNBC 1993: Section 1.2: TERMINLOGY • New terminologies need to be included, more graphical references need to be used Section 1.3: OCCUPANCY CLASSIFICATION • Should be part of land-use classification instead of being a separate classification • First Letter of occupancy may be assigned for referring to classification, e.g. Residential – R, Hospitals – H, Factories – F, Educational – E, etc. • New occupancy type for Public Open Space (park, garden etc.) and restricted open space (special recreational zones) need to be included • New occupancy type for communication (tv stations, mobile transmissions etc.) and transportation (rail station, airport, bus depot, truck terminal, container terminal, sea port, dockyards etc.) needs to be incorporated
  46. 46. 39 • New occupancy type for socio-cultural facilities (e.g. community hall, library, recreational club, music/dance/drama centre, religious/spiritual centre etc) should be incorporated • New sub-divisions for current occupancy types A to F needed using semi-detached, court-type and row type variations. e.g. Occupancy type Sub-division Nature of use or occupancy Building type Section 1.4: LAND-USE CLASSIFICATION AND PERMITTED USES • New categories to be included: TRANSPORTATION, HERITAGE AND CONSERVATION SITES, HOUSING AND SETTLEMENT PLANNING, CONSERVATION OF WETLAND ETC. • Safeguard against conversion of agricultural land (green fields) to non-agricultural use (brown fields) Section 1.7: OPEN SPACES WITHIN A PLOT • Needs open space guidelines for other typologies: semi-detached, courtyard, clustered, row house etc. • Height- open space proportions should be re-evaluated for different typologies. Section 1.8: GENERAL HEIGHT AND AREA LIMITATION • Needs elaboration on what basis should it be done • An appendix should be added on air-funnel of runways for Civil Aviation restriction on buildings near aerodromes Section 1.11: COMMUNITY OPEN SPACE AND AMENITIES • Needs to be upgraded and in harmony with other existing rules and codes. Following new sections may be introduced: a. EXISTING BUILDINGS b. CONSERVATION OF GREENBELTS AND IMPORTANT WATERBODIES • New rules should be added for preservation of WETLAND, CANALS, RIVERFRONT, NATURAL FORESTS AND GREENBELTS, COASTAL FORESTATION etc. c. BUILDINGS AND PLACES OF HISTORICAL AND ARCHITECTURAL VALUE Section 2.1: OCCUPANCY CLASSIFICATION
  47. 47. 40 • More occupancy types need to be included Section 2.5: REQUIREMENTS OF OCCUPANCY R: RESIDENTIAL BUILDINGS • Typologies other than detached form e.g. semi-detached, cluster, courtyard, row type must be included and sufficiently elaborated Section 2.10: REQUIREMENTS OF OCCUPANCY B: BUSINESS AND MERCANTILE BUILDINGS • For some typologies of this category (F1, F2, F3) ground level promenades (covered walkway) on road front can be devised with incentive on FAR Section 2.11: REQUIREMENTS OF OCCUPANCY F: INDUSTRIAL/FACTORY BUILDINGS • Specific and separate rules are needed for two separate categories: low hazard industries and moderate hazard industries Guidelines for new typologies e.g. multistoried car park, transportation hubs, bus stoppages, rooftop towers for mobile network etc. are needed 4.6 TENTATIVE STRUCTURE OF THE UPDATED CODE The proposed Table of Content (TOC) is a tentative one. BNBC 1993 forms the basis for it. Architectural issues are mostly mentioned in Parts 3, 9 and 10 of the BNBC 1993. However inclusion of new chapters and re-classification will need furthermore revision of this TOC. A new chapter on Energy Efficiency and Passive Energy Design Features has been proposed in Part 3. This chapter will give certain minimum codes for achieving energy efficiency using renewable energy with the view of incorporating solar energy use in buildings of 10% to 20% by 2020. Also rainwater harvesting features may be made mandatory. The code can allow concessions to maximum building area when these features are fulfilled. For the time being, most other proposed inclusions are placed as appendices at the end of the TOC.
  48. 48. 41 MATERIALS, STRUCTURE, CONSTRUCTION AND SEISMIC PROVISIONS 5.1 TERMS OF REFERENCE OF THE SUBGROUPS 5.1.1 SUBGROUP: MATERIALS a. Review of the Bangladesh National Building Code (BNBC) 1993, in general. b. Review of Part 5: Building Materials of the Bangladesh National Building Code (BNBC) 1993, in particular. c. Review of the minimum requirements for building materials as stated in other relevant internationally reputed codes, standards etc. d. Preparation of a list and collection of all BSTI and other Bangladesh standards related to building materials and review of those. e. Collection of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else both from within the country and outside and evaluation of those for adoption in the updated code. f. Identification of all building materials in use now in Bangladesh or going to be used in the future taking in to consideration the development of new building materials worldwide. g. Identification of indigenous building materials which are in use in Bangladesh and incorporation of minimum requirements in the revised Code for such materials, if felt necessary. h. Identification of deficiencies of Part 5: Building Materials of Bangladesh National Building Code (BNBC) 1993 in the light of above reviews and study. i. Suggestion for necessary changes in order to eliminate the already identified deficiencies for existing materials as well as to incorporate the minimum requirements for new building materials which may come up in the light of review of national and international standards and codes. j. Analysis of the impediments in the implementation of current Building Code and make recommendations. k. Review and analysis of current provisions for materials affecting the building industry and recommend appropriate amendments to the building materials code
  49. 49. 42 and to formulate a revised Building Materials Code for use in regulating building and construction activities in both urban and rural areas. l. Develop a work plan for the revised Building Materials Code and consider and evaluate the principle of material prescription. 5.1.2 SUBGROUP: STRUCTURE a. Review of present version of the Bangladesh National Building Code (BNBC) 1993, in general. b. Review of Part 6: Structural Design of the Bangladesh National Building Code (BNBC) 1993, in particular. c. Review of the present approaches for evaluation of loads and review of adopted methods of structural design in internationally reputed codes, standards etc. d. Collection of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of those for adoption in the updated code. e. Identification of areas and fields in load estimation and structural design in BNBC, 1993, which require revision and updating. f. Conducting a detailed review of different aspects of structural design as stipulated in BNBC, 1993 and updating necessary parts. The aspects of structural design which will be updated are: Estimation of Different Types of Loads, Working Stress Design and Ultimate Strength Design Methods for Reinforced Concrete, Design for Masonry Structures, Prestressed Concrete Structures, Steel Structures, Timber Structures, Ferrocement Structures etc. g. Introduction of design approaches for indigenous bamboo structures. h. Introduction of design approaches for steel-concrete composite structures. i. Introduction of repair and retrofitting aspects of building structures. 5.1.3 SUBGROUP: CONSTRUCTION a. Review of the Bangladesh National Building Code (BNBC) 1993, in general. b. Review of Part 7: Construction Practices and Safety of the Bangladesh National Building Code (BNBC) 1993, in particular. c. Study of the present approaches in Construction Practices and Safety in internationally reputed codes, standards etc. d. Study of all relevant codes on construction practices in buildings and safety aspects of personnel and property during construction and demolition operations. e. Identification of areas and fields in Construction Practices and Safety in BNBC, 1993, which require revision and updating.
  50. 50. 43 f. Study of the development of Construction Industry and the Safety Practices both home and abroad. g. Review and upgradation of the Construction Practices and Safety part of the existing BNBC 1993 and preparation of recommendations for safe practices on the basis of the above review and in the light of current practice and future trend in the construction industry. h. Revision of the provisions in the BNBC 1993 for construction and safety in a manner to be both applied and at the same time applicable to the industry. i. Removal of extra and inapplicable provisions from the code and making the code provisions simple and easily applicable. j. Exploring for the introduction of Maintenance Management of buildings. 5.1.4 SUBGROUP: EARTHQUAKE ENGINEERING a. Review of the Bangladesh National Building Code (BNBC) 1993, in general. b. Review of Part 6: Structural Design, Chapter 2: Loads, Section 2.5 Earthquake Loads & Chapter 8: Detailing of Reinforced Concrete Structures, Section 8.3 Special Provision for Seismic Design and also other relevant articles of the Bangladesh National Building Code (BNBC) 1993, in particular. c. Review of the present methods in evaluation of earthquake loads as well as of detailing procedures for reinforced concrete and other structures in internationally reputed codes, standards etc. d. Collection of research findings on seismic design and detailing available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of those for adoption in the updated code. e. Identification of areas and fields in earthquake load estimation, detailing of Reinforced Concrete Structures and special provisions for seismic design in BNBC, 1993, which require revision and updating. f. Conducting a detailed review of different aspects of earthquake load estimation, detailing of Reinforced Concrete Structures and special provisions for seismic design as stipulated in BNBC, 1993 and updating necessary parts. g. Review and analyze current BNBC provisions affecting the building industry and recommend appropriate amendments. Provide recommendations for soft story effect in buildings. h. Revision of seismic design and detailing approaches for brick masonry structures. i. Exploring for the necessity of revising the earthquake zoning map of BNBC, 1993. j. Exploring for the introduction of retrofitting aspects of existing brick masonry building structures to be earthquake resistant.
  51. 51. 44 k. Exploring for the introduction of retrofitting aspects of existing reinforced concrete structures to be earthquake resistant. l. Exploring for the introduction of repair techniques for reinforced concrete and masonry building structures subjected to earthquake damage. 5.2 TERMS OF REFERENCE OF INDIVIDUAL CONSULTANTS 5.2.1 SUBGROUP: MATERIALS SENIOR MATERIALS ENGINEER – PROF. MUHAMMAD ZAKARIA a. Act as Subgroup Leader and maintain liaison with the Team & Group Leader/ Coordinator. b. Guide, supervise and coordinate the works of other professionals in the subgroup. c. Review of the minimum requirements of building materials as stated in internationally reputed codes, standards etc. d. Review of research findings for building materials available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. e. Identification of areas and fields in building materials in BNBC, 1993, which require revision and updating. f. Recommend minimum requirements of different building materials for the revised code. g. Assist the Group Leader in all related matters. MATERIALS ENGINEER – PROF. MUNAZ AHMED NOOR a. Assist the Subgroup Leader in all related matters. b. Preparation of a list of all BSTI or other Bangladesh standards related to building materials and collection & review of those. c. Review of the minimum requirements of building materials as stated in internationally reputed codes, standards etc. d. Review of research findings for building materials available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. e. Identification of areas and fields in building materials in BNBC, 1993, which require revision and updating. f. Recommend minimum requirements of different building materials for the revised code.
  52. 52. 45 5.2.2 SUBGROUP: STRUCTURE SENIOR STRUCTURAL ENGINEER 1 – PROF. A.M.M. TAUFIQUL ANWAR a. Act as Group Leader and maintain liaison with the Team Leader/ Coordinator. b. Guide, supervise and coordinate the works of other professionals in the group. c. Assist the Team Leader in preparation of all reports, materials for the workshop and preparation of the revised draft code. d. Review of the present approaches in evaluation of loads and review of methods of structural design adopted in internationally reputed codes, standards etc. e. Review of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. f. Identification of areas and fields in load estimation and structural design in BNBC, 1993, which require revision and updating. g. Review and revision of general structural design requirements, loads, structural design for Steel, Steel-Concrete Composite, Aluminum and Reinforced Concrete Structures. SENIOR STRUCTURAL ENGINEER 2 – PROF. AHSANUL KABIR a. Review of the present approaches in evaluation of loads and review of methods of structural design adopted in internationally reputed codes, standards etc. b. Review of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. c. Identification of areas and fields in load estimation and structural design in BNBC, 1993, which require revision and updating. d. Review and revision of provisions for general structural design requirements, loads, structural design for Masonry, Ferrocement and Prestressed Concrete and their detailing. e. Review, revision and inclusion of provisions for repair, alteration and retrofitting of structures. f. Assist the Group Leader in all related matters. SENIOR STRUCTURAL ENGINEER 3 – PROF. KHAN MAHMUD AMANAT a. Review of the present approaches in evaluation of loads and review of adopted methods of structural design in internationally reputed codes, standards etc. b. Review of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities,
  53. 53. 46 reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. c. Identification of areas and fields in load estimation and structural design in BNBC, 1993, which require revision and updating. d. Review and revision of provisions for all types of loads in BNBC and addition of new loads. Recommend modifications for wind loads, particularly modifications necessary for wind speed map & else. e. Review and revision of general structural design requirements, loads, structural design for Steel, Steel-Concrete Composite, Aluminum and Reinforced Concrete Structures and detailing. f. Assist the Group Leader in all related matters. STRUCTURAL ENGINEER – DR. RAQUIB AHSAN a. Review of the present approaches in evaluation of loads and review of adopted methods of structural design in internationally reputed codes, standards etc. b. Review of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. c. Identification of areas and fields in load estimation and structural design in BNBC, 1993, which require revision and updating. d. Review and revision of general structural design requirements, loads, structural design for Timber, Ferrocement, Prestressed Concrete and Bamboo and detailing. e. Assist the Group Leader in all related matters. f. Act as coordinator to Team Leader and assist the Team Leader in preparation of all reports, materials for the workshop and preparation of the revised draft code. STRUCTURAL ENGINEER – DR. A. F. M. SAIFUL AMIN a. Review of the present approaches in evaluation of loads and review of adopted methods of structural design in internationally reputed codes, standards etc. b. Review of research findings available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. c. Identification of areas and fields in load estimation and structural design in BNBC, 1993, which require revision and updating. d. Review and revision of all types of loads in BNBC and addition of new loads. Recommend modifications for wind loads, particularly modifications necessary for wind speed map & else.
  54. 54. 47 e. Review and revision of general structural design requirements, loads, structural design for Timber, Bamboo, Masonry and Reinforced Concrete and detailing. f. Review, revision and inclusion of repair, alteration and retrofitting of structures. g. Assist the Group Leader in all related matters. 5.2.3 SUBGROUP: CONSTRUCTION SENIOR CONSTRUCTION ENGINEER – PROF. MD. SHAFIUL BARI a. Act as Subgroup Leader and maintain liaison with the Team & Group Leader/ Coordinator. b. Guide, supervise and coordinate the works of other professionals in the subgroup. c. Review of all relevant international codes and standards on construction practices in buildings, and safety aspects of personnel and property during construction and demolition operations. d. Review of research findings for construction practices and safety aspects available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. e. Identification of areas and fields in construction practices in buildings, and safety aspects in BNBC, 1993, which require revision and updating. f. Recommend minimum requirements for safe construction practices in the revised code. g. Exploring for the introduction of Maintenance Management of buildings. h. Assist the Group Leader in all related matters. CONSTRUCTION ENGINEER – ENGR. SABBIR SIDDIQUEE a. Assist the Subgroup Leader in all related matters. b. Review of all relevant international codes and standards on construction practices in buildings, and safety aspects of personnel and property during construction and demolition operations. c. Review of research findings for construction practices and safety aspects available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. d. Identification of areas and fields in construction practices in buildings, and safety aspects in BNBC, 1993, which require gross revision and updating. e. Recommend minimum requirements for safe construction practices in the revised code.
  55. 55. 48 5.2.4 SUBGROUP: EARTHQUAKE ENGINEERING SENIOR EARTHQUAKE ENGINEER – PROF. TAHMEED M. AL-HUSSAINI a. Act as Subgroup Leader and maintain liaison with the Team & Group Leader/ Coordinator. b. Guide, supervise and coordinate the works of other professionals in the subgroup. c. Review of the present methods in evaluation of earthquake loads as well as of detailing procedures for reinforced concrete and other structures in internationally reputed codes, standards etc. d. Review of research findings on seismic design and detailing available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. e. Identification of areas and fields in earthquake load estimation, detailing of Reinforced Concrete Structures and special provisions for seismic design in BNBC, 1993, which require revision and updating. f. Revision of the earthquake zoning map of BNBC, 1993. g. Introduction of retrofitting aspects of existing reinforced concrete structures to be earthquake resistant. h. Assist the Group Leader in all related matters. EARTHQUAKE ENGINEER – PROF. TAHSIN REZA HOSSAIN a. Assist the Subgroup Leader in all related matters. b. Review of the present methods in evaluation of earthquake loads as well as of detailing procedures for reinforced concrete and other structures in internationally reputed codes, standards etc. c. Review of research findings on seismic design and detailing available in the form of research papers, dissertations and reports published by different national and international publishing authorities, reputed universities or else within the country and outside and evaluation of such for adoption in the updated code. d. Identification of areas and fields in earthquake load estimation, detailing of Reinforced Concrete Structures and special provisions for seismic design in BNBC, 1993, which require revision and updating. e. Introduction of seismic design and detailing approaches for brick masonry structures. f. Introduction of retrofitting aspects of existing brick masonry building structures to be earthquake resistant. g. Introduction of repair techniques for reinforced concrete and masonry building structures subjected to earthquake damage.

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