Cutting carbon in construction

John Barritt

Construction Materials Sector Specialist

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 requirementsfor carbon efficiency in construction projectsand facilities management

WRAP Tools

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).

User journey Register/login

Performance report (waste forecast)

Record actions and impacts

Enter project details

Design review workshop

Awareness session: review of principles

Creativity session: generate ideas

Reasoning session: prioritise ideas

Calculate combined impacts

Reporting

Add new project

Detailed report

Project comparison

Use project as template

WRAP SWMP Template

Users: Design Team, Client, Principal Contractor

When: As early in the project as possible

Inputs:

Waste forecasts

Actual waste arisings

Waste destinations

Cost: A few hours, depending on project size

Benefits:

Meet the legal requirement (England only)

Identify Good & Best Practice opportunities

Assign responsibilities for waste management actions

Identify areas for improvement & lessons learned

SWMP Section

1 Enter Basic Details

2 Record Waste Prevention Actions

Forecast Waste Non Compliances: 11 / 11

3 Review >

Record Waste Reduction Actions

Specify Waste Carriers

4 Plan Waste Destinations

Record Waste Management and Recovery Actions

Status:

5 Enter Actual Waste Movements

Non Compliances: 16 / 16

Review >

KPI's

Status:

6 Reporting

Non Compliances: 2 / 2

Sign DeclarationReview >

Guidance

Pre- Construction

Not compliant

Compliance

Section 1.0

Section 2.0

Section 3.0

Construction

Post Completion

Status:

Not compliant

Not compliant

Project Stage

Section 4.0

Section 5.0

Section 6.0

Policy and setup

Preparation and

concept design

Detailed design

Construction

Pre-construction

Post completion

and use

Crushed concrete produces a quality recycled aggregate

What are the most resource efficient and low carbon uses for aggregates produced from concrete?

Recycled aggregates as coarseaggregate 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

2008 aggregate market

sand & gravel

28%

crushed rock

44%

recycled/secondary

28%

For more information:

www.wrap.org.uk/constructionwww.aggregain.wrap.org.uk