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Structural Integrity Assessment
Standards in Nigeria
BuildExpo 2017
By Engr. Nimot. Muili MNSE
November 2017
2
Introduction
Yesteryears
Today
Challenges
Tomorrow
Recommen
dations
Outline
Outline
3
Introduction
• Structural Elements : relate to the physical makeup of
a structure arranged in a systematic manner
• Structural Integrity:
ability for the structural
element to fit for
purpose
4
Introduction
Structural Elements Components:
• Rebar
• Fine & Coarse Aggregate
• Cement
• Steel Sections
• Bolts
• Welds
• Workmanship
• Quality Control
• Construction methodology
• Post Construction management
• Maintenance
• Etc
5
Structural Integrity in Nigeria in Yesteryears
Structural Member
System Capacity
Member
Capacity
Connection
Capacity
Identify
Redundancy
Design,
Tests
and
procedures
as
described
in
Code
of
Practice
and
later
replaced
by
British
Standard
and
American
Standard
6
Structural Integrity in Nigeria in Yesteryears
What are Design/
Validation /
Verification
Standards?
7
Structural Integrity in Nigeria in Yesteryears
The Good. The Ugly . . The Bad ????
Are we Reactive or Proactive?
8
Structural Integrity in Nigeria Today
Efforts is geared towards instituting design regulations, construction
Standard, Legalising regulations and standards for the building industry.
They include;
 Nigeria General Specification for road and Bridges
 Extract - THE WEST AFRICAN COMPACTION TEST:-
This test is identical with Test 13 in B.S.1377 . . . .
 The aggregates (fine, coarse and all-in) for all grades of concrete and mortar
shall comply in all respects with B.S.882 and the Contractor shall test all
samples as described therein and in B.S.812 as often as the Engineer's
Representative may require to ensure that they are continuously up to these
standards.
9
Structural Integrity in Nigeria Today
Federal Government of Nigeria: General Specifications (Roads and
Bridges) by Federal Highways Federal Ministry of Works & Housing
Headquarters, Abuja
Other efforts include the development of the following in the following areas
 Government of The Federal Republic of Nigeria: Highway Design
Manual – Volume 1 – 5 (Pavement & Design Material, Drainage, Road
Structural Design and Geometric Design)
 Nigeria Building and Road Research Institute Publications
on various local engineering material e.g. Road Subgrade Testing;
Periwinkle as concrete aggregate, Black Cotton, Solar Data for Building,
Survey properties of clay deposits in Nigeria etc.
10
Structural Integrity in Nigeria Today
Other efforts include the development of the following in the following areas
 Nigeria Building Code
 1st Edition – Approved in 1991,
 2nd Edition - ???? Under review since presentation at the 2nd National
Council of Housing and Urban Development in November 2005. It
was widely circulated to enable all stakeholders for input to facilitate
and the production of an acceptable Nigeria code
• Due diligence integrity check using as built drawings
• Destructive and none destructive test
11
In view of the spate of building collapse in Lagos State and the attendant
fatalities, loss of properties, bad reputations, setbacks amongst other things,
the Lagos State Government through Lagos State Building Control Agency is
making efforts to stem the tide.
The State Government has recently employed the services of about 350
professionals including engineers, architects, builders etc to extend the
dragnet of monitoring illegal development. Another effort the State
Government is exploring is that of "WHISTLE BLOWING". In the spirit of
ensuring a safer Lagos, LASBCA will appreciate your partnership with
government by whistle-blowing to tell us the on-going developments as
well as distressed buildings.
Structural Integrity in Nigeria Today
- Lagos as a case study
12
Structural Integrity in Nigeria Today
- Lagos as a case study
Lagos State Building Control Agency (LABCA) role . . .
• Giving advice regarding the information that needs to be submitted
as part of an application.
• Checking and commenting on proposals for compliance with the
building regulations.
• Inspecting works at key stages as it progresses.
• Keeping records of project progress.
• Assessing damaged buildings and approving demolition when
necessary.
• Issuing a final certificate of fitness.
13
Lagos State Material Testing Laboratory (LSMTL) test all building and
civil engineering materials for standard. Such test include:
• Soil Mechanics
• Sub-soil Investigation
• Aggregate
• Cement
• Water
• Chemical Test
Structural Integrity in Nigeria Today
- Lagos as a case study
• Concrete, Asphaltic Concrete(Bituminous Road)
• Blocks Bricks, Ceramics, Roofing Sheets, Wood
& Refractory Products.
• Test on Steel Reinforcements, round and flat bars.
• Calibration of all test Equipment/Registration
• Certification of Installed Lightning/Thunder
Arrestors on Structures and Telecommunication
Mast.
14
Structural Integrity in Nigeria Today
Other efforts include the development of the following codes
 Nigeria General Specification for road and Bridges
 Government of The Federal Republic of Nigeria: General
Specifications (Roads and Bridges) by Director Of Federal Highways
Federal Ministry of Works & Housing Headquarters Abuja
 Development Nigeria Structural Engineering Code from Eurocode
National Annex by Nigeria Institute of Civil Engineers (NICE) &
Nigeria Institute of Structural Engineers (NistructE) - Ongoing
• Due diligence integrity check using as built drawings
• Destructive and none destructive test
15
Structural Integrity in Nigeria Today
16
Case Study
• The American Association of State Highway and
Transportation Officials is a standards setting body which
publishes
• specifications, test protocols and guidelines which are used in
highway design and construction throughout the United States
• AASHTO is a non-profit, nonpartisan association representing
highway and transportation departments in the 50 states, the
District of Columbia, and Puerto Rico.
• It represents all five transportation modes: Air, Highways, Public
Transportation, Rail, And Water.
• Its primary goal is to foster the development, operation, and
maintenance of an integrated national transportation system.
17
• As the voice of transportation, AASHTO works to educate the
public and key decision makers about the critical role that
transportation plays in securing a good quality of life and sound
economy for our nation.
• AASHTO serves as a liaison between state departments of
transportation and the Federal government.
• AASHTO is an international leader in setting technical standards
for all phases of highway system development.
• Standards are issued for design, construction of highways
and bridges, materials, and many other technical areas.
Case Study
18
Case Study
• AASHTO serves as a catalyst for excellence in transportation by
offering smart solutions and promising practices; critical
information, training and data; direct technical assistance to
states; and unchallenged expertise.
• AASHTO specifications, provisional standards, standard test
methods, recommended practices, guide specifications, manuals,
the Bridge Welding Code, annual meeting procedures, the
Reference Book of Member Department Personnel &
Committees, U.S. Numbered Highways, and interstates research.
19
• Regulations
• Ambiguities
• Irrelevant Clauses
• Impropriate Standards
Challenges
• Designers use mainly British and American Standards and Codes despite
the fact that local requirements differs.
• There are a few existing National Standards relating to general
construction (Buildings, Roads etc) and the few are not even know.
• Lack of coordination on the few existing and proposed standards
20
• Reluctance of contractors to embrace quality culture
• Frequent problems in drafting of structural standards and regulations
• Nigeria Building industry still use common (old) testing procedures
• Effort from researchers are not documented nor traceable to facilitate
adoption and implementation of the widely accepted Eurocodes
• No visible effort by professionals and Government to identify
relevant Eurocode Annexes that allows for adaptation for Local /
National parameters
Challenges
21
• Prior to and since 2010 when the United Kingdom (UK) had
withdrawn all British Standards pertaining to structural design, many
counties have been taking the initiative and the lead in drafting the
of their relevant Standards to replace the existing BS structural
design
• Examples include Malaysia who started drafting MS EN Eurocodes
since her Independence in 1957. By 2010, five of the Eurocode parts
have been drafted into Malaysian National Annexes, relating to
structure design in concrete and steel buildings. standards used in the
construction industry
Way Forward
22
• Bosnia and Herzegovina are not left out
• Globally, there are plans for Structural Eurocodes to Replace
British Standards -
https://www.google.co.za/search?q=adoptation+of+eurocode&rlz=1C1G
GRV_enNG761NG761&oq=adoptation+of+eurocode&aqs=chrome..69i
57.9876j0j9&sourceid=chrome&ie=UTF-8
• Eurocodes are 'designed by engineers for engineers' and they
break down technical barriers to trade across Europe and beyond
Way Forward
23
• Nigeria is known to be “The Giant of Africa” . The Federal
Government can take the initiative to bring together other Africa
countries who is interested in the adoption and implementation of
the Eurocodes.
• The workshop will bring together representatives from the relevant
services of the European Commission, National Standardisation
Bodies, Scientific Community, Academia and professional designers
and the Civil Engineering community as a whole in the non-EU
countries in the Africa region to contribute to the adaptation of the
Eurocodes for Africa
Way Forward
24
Testing
Implementation
Identify Requirements
Analysis & Design
Planning
Evaluation
Deployment
Enforcement
Strategise and Synergise
Government – Ministries Development Agencies
25
Technical Professionals - Engineers
Civil / Structural Engineer
Mechanical Engineer
Electrical Engineer
Geological Safety, Cost, Environmental, Materials, Quality etc
Technical Professionals - Builders
Quantity Surveyors, Architects
Legal & Arbitrators
Technical & Non Technical
Researchers & Developers
Government:
Federal
State
Local
Manufacturers
Artisans
Recommendations
26
• Construction Standards and Regulation in Nigeria by
RUYA Fadason, CHITUMU Danladi and JATAU Tchad Sharon
• Investigation on effort towards the development Nigeria
Structural Engineering Code
• Lagos State Government Agencies
• etc
References
27

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Structural Integrity Assessment Standards in Nigeria by Engr Nimot Muili

  • 1. Structural Integrity Assessment Standards in Nigeria BuildExpo 2017 By Engr. Nimot. Muili MNSE November 2017
  • 3. 3 Introduction • Structural Elements : relate to the physical makeup of a structure arranged in a systematic manner • Structural Integrity: ability for the structural element to fit for purpose
  • 4. 4 Introduction Structural Elements Components: • Rebar • Fine & Coarse Aggregate • Cement • Steel Sections • Bolts • Welds • Workmanship • Quality Control • Construction methodology • Post Construction management • Maintenance • Etc
  • 5. 5 Structural Integrity in Nigeria in Yesteryears Structural Member System Capacity Member Capacity Connection Capacity Identify Redundancy Design, Tests and procedures as described in Code of Practice and later replaced by British Standard and American Standard
  • 6. 6 Structural Integrity in Nigeria in Yesteryears What are Design/ Validation / Verification Standards?
  • 7. 7 Structural Integrity in Nigeria in Yesteryears The Good. The Ugly . . The Bad ???? Are we Reactive or Proactive?
  • 8. 8 Structural Integrity in Nigeria Today Efforts is geared towards instituting design regulations, construction Standard, Legalising regulations and standards for the building industry. They include;  Nigeria General Specification for road and Bridges  Extract - THE WEST AFRICAN COMPACTION TEST:- This test is identical with Test 13 in B.S.1377 . . . .  The aggregates (fine, coarse and all-in) for all grades of concrete and mortar shall comply in all respects with B.S.882 and the Contractor shall test all samples as described therein and in B.S.812 as often as the Engineer's Representative may require to ensure that they are continuously up to these standards.
  • 9. 9 Structural Integrity in Nigeria Today Federal Government of Nigeria: General Specifications (Roads and Bridges) by Federal Highways Federal Ministry of Works & Housing Headquarters, Abuja Other efforts include the development of the following in the following areas  Government of The Federal Republic of Nigeria: Highway Design Manual – Volume 1 – 5 (Pavement & Design Material, Drainage, Road Structural Design and Geometric Design)  Nigeria Building and Road Research Institute Publications on various local engineering material e.g. Road Subgrade Testing; Periwinkle as concrete aggregate, Black Cotton, Solar Data for Building, Survey properties of clay deposits in Nigeria etc.
  • 10. 10 Structural Integrity in Nigeria Today Other efforts include the development of the following in the following areas  Nigeria Building Code  1st Edition – Approved in 1991,  2nd Edition - ???? Under review since presentation at the 2nd National Council of Housing and Urban Development in November 2005. It was widely circulated to enable all stakeholders for input to facilitate and the production of an acceptable Nigeria code • Due diligence integrity check using as built drawings • Destructive and none destructive test
  • 11. 11 In view of the spate of building collapse in Lagos State and the attendant fatalities, loss of properties, bad reputations, setbacks amongst other things, the Lagos State Government through Lagos State Building Control Agency is making efforts to stem the tide. The State Government has recently employed the services of about 350 professionals including engineers, architects, builders etc to extend the dragnet of monitoring illegal development. Another effort the State Government is exploring is that of "WHISTLE BLOWING". In the spirit of ensuring a safer Lagos, LASBCA will appreciate your partnership with government by whistle-blowing to tell us the on-going developments as well as distressed buildings. Structural Integrity in Nigeria Today - Lagos as a case study
  • 12. 12 Structural Integrity in Nigeria Today - Lagos as a case study Lagos State Building Control Agency (LABCA) role . . . • Giving advice regarding the information that needs to be submitted as part of an application. • Checking and commenting on proposals for compliance with the building regulations. • Inspecting works at key stages as it progresses. • Keeping records of project progress. • Assessing damaged buildings and approving demolition when necessary. • Issuing a final certificate of fitness.
  • 13. 13 Lagos State Material Testing Laboratory (LSMTL) test all building and civil engineering materials for standard. Such test include: • Soil Mechanics • Sub-soil Investigation • Aggregate • Cement • Water • Chemical Test Structural Integrity in Nigeria Today - Lagos as a case study • Concrete, Asphaltic Concrete(Bituminous Road) • Blocks Bricks, Ceramics, Roofing Sheets, Wood & Refractory Products. • Test on Steel Reinforcements, round and flat bars. • Calibration of all test Equipment/Registration • Certification of Installed Lightning/Thunder Arrestors on Structures and Telecommunication Mast.
  • 14. 14 Structural Integrity in Nigeria Today Other efforts include the development of the following codes  Nigeria General Specification for road and Bridges  Government of The Federal Republic of Nigeria: General Specifications (Roads and Bridges) by Director Of Federal Highways Federal Ministry of Works & Housing Headquarters Abuja  Development Nigeria Structural Engineering Code from Eurocode National Annex by Nigeria Institute of Civil Engineers (NICE) & Nigeria Institute of Structural Engineers (NistructE) - Ongoing • Due diligence integrity check using as built drawings • Destructive and none destructive test
  • 15. 15 Structural Integrity in Nigeria Today
  • 16. 16 Case Study • The American Association of State Highway and Transportation Officials is a standards setting body which publishes • specifications, test protocols and guidelines which are used in highway design and construction throughout the United States • AASHTO is a non-profit, nonpartisan association representing highway and transportation departments in the 50 states, the District of Columbia, and Puerto Rico. • It represents all five transportation modes: Air, Highways, Public Transportation, Rail, And Water. • Its primary goal is to foster the development, operation, and maintenance of an integrated national transportation system.
  • 17. 17 • As the voice of transportation, AASHTO works to educate the public and key decision makers about the critical role that transportation plays in securing a good quality of life and sound economy for our nation. • AASHTO serves as a liaison between state departments of transportation and the Federal government. • AASHTO is an international leader in setting technical standards for all phases of highway system development. • Standards are issued for design, construction of highways and bridges, materials, and many other technical areas. Case Study
  • 18. 18 Case Study • AASHTO serves as a catalyst for excellence in transportation by offering smart solutions and promising practices; critical information, training and data; direct technical assistance to states; and unchallenged expertise. • AASHTO specifications, provisional standards, standard test methods, recommended practices, guide specifications, manuals, the Bridge Welding Code, annual meeting procedures, the Reference Book of Member Department Personnel & Committees, U.S. Numbered Highways, and interstates research.
  • 19. 19 • Regulations • Ambiguities • Irrelevant Clauses • Impropriate Standards Challenges • Designers use mainly British and American Standards and Codes despite the fact that local requirements differs. • There are a few existing National Standards relating to general construction (Buildings, Roads etc) and the few are not even know. • Lack of coordination on the few existing and proposed standards
  • 20. 20 • Reluctance of contractors to embrace quality culture • Frequent problems in drafting of structural standards and regulations • Nigeria Building industry still use common (old) testing procedures • Effort from researchers are not documented nor traceable to facilitate adoption and implementation of the widely accepted Eurocodes • No visible effort by professionals and Government to identify relevant Eurocode Annexes that allows for adaptation for Local / National parameters Challenges
  • 21. 21 • Prior to and since 2010 when the United Kingdom (UK) had withdrawn all British Standards pertaining to structural design, many counties have been taking the initiative and the lead in drafting the of their relevant Standards to replace the existing BS structural design • Examples include Malaysia who started drafting MS EN Eurocodes since her Independence in 1957. By 2010, five of the Eurocode parts have been drafted into Malaysian National Annexes, relating to structure design in concrete and steel buildings. standards used in the construction industry Way Forward
  • 22. 22 • Bosnia and Herzegovina are not left out • Globally, there are plans for Structural Eurocodes to Replace British Standards - https://www.google.co.za/search?q=adoptation+of+eurocode&rlz=1C1G GRV_enNG761NG761&oq=adoptation+of+eurocode&aqs=chrome..69i 57.9876j0j9&sourceid=chrome&ie=UTF-8 • Eurocodes are 'designed by engineers for engineers' and they break down technical barriers to trade across Europe and beyond Way Forward
  • 23. 23 • Nigeria is known to be “The Giant of Africa” . The Federal Government can take the initiative to bring together other Africa countries who is interested in the adoption and implementation of the Eurocodes. • The workshop will bring together representatives from the relevant services of the European Commission, National Standardisation Bodies, Scientific Community, Academia and professional designers and the Civil Engineering community as a whole in the non-EU countries in the Africa region to contribute to the adaptation of the Eurocodes for Africa Way Forward
  • 24. 24 Testing Implementation Identify Requirements Analysis & Design Planning Evaluation Deployment Enforcement Strategise and Synergise Government – Ministries Development Agencies
  • 25. 25 Technical Professionals - Engineers Civil / Structural Engineer Mechanical Engineer Electrical Engineer Geological Safety, Cost, Environmental, Materials, Quality etc Technical Professionals - Builders Quantity Surveyors, Architects Legal & Arbitrators Technical & Non Technical Researchers & Developers Government: Federal State Local Manufacturers Artisans Recommendations
  • 26. 26 • Construction Standards and Regulation in Nigeria by RUYA Fadason, CHITUMU Danladi and JATAU Tchad Sharon • Investigation on effort towards the development Nigeria Structural Engineering Code • Lagos State Government Agencies • etc References
  • 27. 27