John Barritt, construction materials sector specialist, WRAP

1. Cutting carbon in construction
John Barritt
Construction Materials Sector Specialist

2. WRAP ‘Designing out Waste’ tools and
guidance for maximising the carbon benefits
of resource efficient construction
Reducing waste and carbon through an
efficient site waste management plan
Exploring the options for recycling concrete
without increasing net carbon
Defining model procurement requirements
for carbon efficiency in construction projects
and facilities management

7. WRAP Tools

8. Identify opportunities to design out waste in buildings
projects;
Record design solutions pursued to reduce material
consumption, wastage and carbon;
Calculate the impact of these solutions, including
savings in project costs, waste to landfill and embodied
carbon;
Compare the performance of different projects /
alternative designs; and
Provide an indicative waste forecast for your Site Waste
Management Plan
(SWMP).

10. User journey Register/login
Add new project
Enter project details
Performance report
(waste forecast)
Design review workshop
Awareness session: review of principles
Creativity session: generate ideas
Reasoning session: prioritise ideas
Record actions and
impacts
Calculate combined
impacts
Detailed report
Reporting Project comparison
Use project as template

13. WRAP SWMP Template
Users: Design Team, Client, Principal Contractor
When: As early in the project as possible
Waste forecasts
Inputs: Actual waste arisings
Waste destinations
Cost: A few hours, depending on project size
Meet the legal requirement (England only)
Identify Good & Best Practice opportunities
Benefits:
Assign responsibilities for waste management actions
Identify areas for improvement & lessons learned

14. Project Stage SWMP Section Guidance Compliance
Policy and setup 1 Enter Basic Details Section 1.0 Pre- Construction
Status:
Preparation and
2 Record Waste Prevention Actions Section 2.0
concept design Not compliant
Forecast Waste Non Compliances: 11 / 11
Detailed design
3 Section 3.0 Review >
Record Waste Reduction Actions
Specify Waste Carriers
Pre-construction
4 Plan Waste Destinations Section 4.0
Record Waste Management and Recovery Actions
Construction
Status:
Construction
5 Enter Actual Waste Movements Section 5.0 Not compliant
Non Compliances: 16 / 16
Review >
KPI's Post Completion
Status:
Post completion 6 Reporting Section 6.0 Not compliant
and use
Non Compliances: 2 /2
Review >
Sign Declaration

15. Crushed concrete produces
a quality recycled
aggregate
What are the most
resource efficient and low
carbon uses for aggregates
produced from concrete?

16. Recycled aggregates as coarse
aggregate for concrete:
Limitations within concrete
standard restrict use
Viable technical options for non
structural concrete
>20% in structural concrete
increases water demand,
cement content and carbon
Use should be close to crushing
operation to prevent high
transport carbon

17. 2008 aggregate market
recycled/secondary
28%
crushed rock
44%
sand & gravel
28%

24. For more information:
www.wrap.org.uk/construction
www.aggregain.wrap.org.uk