This presentation may simply explain the value and importance of sustainable construction and the contribution of the quantity surveyor.

1. Prabath M. Bandara
University of Vocational Technology
Sri Lanka.
(Assignment)

2. What is…?
• Sustainable construction is building in a
way that is socially, economically,
environmentally, functionally and
aesthetically balanced to meet today’s
needs and to provide and conserve
resources for future generations.
or simply we can say;
Development that meets the needs of the present
without comprising the ability of future generations to
meet their own needs, is called Sustainable Construction.

3. SUSTAINABILITY MODEL
ENVIRONMENTAL
A viable natural environment
Sustainable
economic
development
Sustainable
natural and built
environment
Equitable
Social
Environment
SUSTAINABLE
CONSTRUCTION

4. Conceptual Drawing of Sustainable Construction

5. Conceptual Drawing of Sustainable Construction

6. Examples… Using natural light & Ventilation

8. What are the main difficulties to implement this?
Getting people to
understand the
need of
Sustainable
buildings
Marketing the
concept for new
customers

9. Evaluating Sustainable Construction
FIVE TARGET ISSUES
• Progress > Significant advancements
• Planet > Environmental performance
• Prosperity > Economical efficiency
• People > Social responsibility
• Proficiency > Architectural quality

10. BENEFITS OF SUSTAINABLE BUILDINGS
• Saving of water 30% - 50%
• Energy Saving 20% - 30%
• Conserves natural scarce resources and less waste
• Enhanced air quality
• Excellent day lighting
• Provides healthier for occupants
• Less CO2 emission and global warming
• 40% of raw materials use
• 30% of waste output (136 million tons annually) and
• 14% of potable water consumption.

11. New challenges to QS from sustainable construction
There are some new services can now be offered to
clients, such as…
• Analysing and advising on Green Capital Costs
• Promoting the benefits of Life Cycle management
• Green Financing and Green Leases
• Cost effective sustainable strategies
• Property Performance Appraisals
• Value Management and Engineering solutions
• The use of information technology (such as Building Management
Systems and Information Models)
These will now all form part of the services a QS
can offer clients.

12. “GREEN SHOOTS” FOR THE QUANTITY SURVEYOR
GREEN SHOOTS
Green Costing
Carbon Footprint
Life Cycle Costing
Property performance reporting
Green building rating assessment
Building Information Modelling (BIM)

13. • GREEN COSTING
With the increasing prevalence of green building ratings, the Quantity
Surveyor has to be adept in the knowledge of new and emerging
technologies that are being utilized in green buildings. Cost models have to
be updated to cater to Clients‘ needs in regards to the extra over
costs for achieving the different levels of green building certification.
• CARBON FOOTPRINT
The first step in developing a carbon management strategy for buildings will
be to accurately measure the current level of carbon emissions – that will
be your carbon footprint. Carbon footprint is essential for building owners
to set benchmarks to measure carbon performance and
to compare amongst other properties. These measurements would also
enable building owners to maximize energy efficiencies and returns through
identification of energy inefficient areas.
• LIFE CYCLE COSTING
The field of Life Cycle Costing (LCC) will grow in importance in the next few
years and the Quantity Surveyor, who is an expert in cost management, is in
an excellent position to gear itself for this role. LCC is a technique to
establish the total cost of the building throughout its functional lifespan.
LCC can be used to produce a spend profile of the building over its
anticipated life-span and the results can be used to assist the management
in the decision-making process to go green.

14. • Life Cycle Costing and Facilities Management, in
particular, were two services quantity surveyors
could offer - and specialise in - to achieve
sustainable building.
Life Cycle Costing, basically, can be defined as the
sum of all recurring and non-recurring costs over
the full lifespan or a specified period of applicable
structures, goods or services. This includes the
purchase price, installation and operational costs,
maintenance and upgrading costs, and the
remaining value at the end of ownership of the
commodity in question - in other words: the total
cost of ownership.

16. Facility management role of QS in Sustainable
Construction
• Construction, building technology and maintenance costs
• Estimating and budgeting
• Cost control and reporting
• Managing building operations
• Life Cycle costs
• Understanding building components and functionality
• Procuring goods, services and leases
• Managing contracts and sub-contracts
• Understanding building management systems
• Integrating information and management systems

17. • PROPERTY PERFORMANCE REPORTING
The emphasis on energy efficiency and the changing demand of
today‘s tenants requires building owners to work their way through
the existing performance measurement tools to understand where
they fail to meet new standards. In the first instance what is needed
is an assessment process that provides a clear gap analysis that takes
the owner towards a balanced improvement strategy.
• GREEN BUILDING RATING ASSESSMENT
The prevalent use of green building rating systems such as LEED and
Green Mark in international projects has created new inroads for the
quantity surveyor to exploit. Courses such as the LEED Accredited
Professional and the Green Mark Manager certification have been
created to enhance
the understanding of the relevant Green Building rating system and
environmentally sustainable designs. With a greater understanding
of the green building rating systems, the QS would be able to in a
better position to advice the Client both on the costing and
sustainable designs.

18. • BUILDING INFORMATION MODEL
Building Information Modeling (BIM) is an integral
platform for the management of information
throughout the project lifespan. The BIM model is best
suited for use where visual presentation is required.
With the advancement in building information
modelling (BIM) systems, the use of object
orientated CAD may be able to contain information
such as Green Assessment points, intelligent advice on
usage, LCA with carbon, specifications and real time
costing as well.
The other key advancement to note is the automatic
generation of bills of quantities from BIM, which is
called Quantity Information Model (QIM). QIM relies on
the data within BIM to extract the relevant data and
process into bills of quantities. The apparent advantage
of utilizing such systems would be a fundamental shift
in the role of Quantity Surveyors to focus on higher
value added cost estimating activities.