Session 2: A methodology for measuring embodied carbon. Sean Lockie, Director, Faithful and Gould

Transcription

1 Session 2: A methodology for measuring embodied carbon Sean Lockie, Director, Faithful and Gould

2 RICS Methodology to calculate embodied carbon Sean Lockie, Faithful+Gould

3 RICS 2 guides Methodology to calculate embodied carbon of materials, 2012 Information paper targeted at the QS community Product stage embodied carbon methodology Methodology to calculate embodied carbon lifecycle 2014 Global guidance note Life cycle embodied carbon methodology

4 BS 15978

5 Scopes covered Life cycle carbon emissions

6 Scopes covered Embodied carbon Operational carbon

7 Life cycle carbon emissions

8 Life cycle carbon emissions

9 Life cycle carbon emissions

10 Life cycle carbon emissions

11 Life cycle carbon emissions

12 Impacts vary depending on type of building End of life Maintenance, repair Product Construction More carbon in use Operational energy, water More carbon in product Product stage

13 Drivers for change Climate Change Act, 2008 Legally binding GHG to be reduced by at least 34% by 2020 and 80% by 2050 Low Carbon Construction by IGT, 2010 Other drivers: BREEAM, CEEQUAL, LEED, Planning Authorities

14 Not just the QS Embodied carbon Client Architect Contractor Project Manager Team track record Set targets Struct Engineer Research alternative materials for foundation and structural frame In addition to passive design, research low carbon materials for building envelope and finishes specify work procedures and methods that avoid waste. local sourcing avoid half full deliveries minimise overordering reduce on-site energy consumption Establish ways to monitor performance B Services Engineer balance operational and embodied carbon savings

15 How the maths works

16 Royal Institution of Chartered Surveyors Methodology to calculate embodied carbon of materials, 2012 Information paper targeted at the QS community Product stage embodied carbon methodology Methodology to calculate embodied carbon - life cycle, 2014 Global guidance note Life cycle embodied carbon methodology

17 Scope of the RICS guidance Scope of the assessment Guide is Aimed at the QS Works with quantities and NRM data structure Works with buildings and infrastructure Guide is not Not intended to replace any of the guides that already exist (e.g. PAS 2050, Green House Gas Protocol, BS EN ISO or 15978), Doesn t go as deep as bottom up systems such as Sigma Pro methodology

18 What is in the guide

19 What is in the guide Tips on how to mitigate

20 The guide contains benchmarks Floor area x benchmark Embodied carbon benchmarks

21 Product stage

22 Product stage

23 Product stage

24 Product stage

25 Construction stage

26 Maintenance / repair

27 How is embodied carbon measured?

28 A case study

29 M&S, Cheshire Oaks Floor Area 20,000m 2 Located near Liverpool M+S Plan A A number of sustainability features A number of sustainability awards Carbon Champion of the Year Award, CIBSE 2014

30 Sustainability features 1. Displacement ventilation 2. Thermal mass / daylight 3. CO 2 refrigeration 4. Rain water harvesting 5. Biomass boiler 6. Green wall 7. Permeable paving 8. Biodiversity 9. POE

31 Post Occupancy Evaluation

32 Hard issues

33 Hard issues

34 Hard issues

35 Back to embodied carbon...

36 The approach This presentation looks at the embodied carbon aspects only. 60 year cradle to grave assessment. Created a baseline then... Quantified the reductions in total carbon achieved against the baseline Embodied carbon Operational carbon

37 Scope of the assessment Scope of the assessment Foundations & Structure Superstructure Fit-out External Areas Pads Floor Slabs / Decks Partitions Car Park Perimeter Beams Main Building Frame Floor and floor finishes Yard Ground Slab Cladding / Walling Units Ceilings Roads Roofing External Doors Louvring Doors Central Plant Gas / Electricity Services Water Services Ventilation Services Drainage Lifts

38 Creation of a baseline embodied carbon No benchmark existed so a baseline was created Baseline - No Plan A spec Traditional retail building Specifications listed (right) Embodied carbon Foundations Baseline Pads and perimeter beam Agreed design As per baseline, with 30% PFA concrete substitution Frame Steel frame Steel frames and glulam joists Upper Floor Slab Concrete Slab Timber Deck Walls Masonry Hempcrete Fit Out Plasterboard Walls; Ceramic Floor Tiles 100% Recycled Plasterboard; 40% recycled Ceramic tiles Operational carbon

39 Embodied Carbon (tco 2 e) Results embodied carbon: life cycle stages Total Embodied Carbon over 60 years Embodies carbon 20, , ,000 5,200 4,892 14,000 1,782 12,000 10,000 1,200 1, Operational carbon 8,000 6,000 4,000 2, ,108 10,728 20,000t 18,896t End Of Life Maintenance Onsite Activities Delivery Raw Materials

40 Things that contributed to reducing the embodied CO2 Shell and Core 30% PFA substitution in Concrete Foundations, Substructure and Superstructure Glulam roof structure (FSC sourced) rather than concrete roof slab Hempcrete walls Removal of 60mm Screed from Ground Slab Timber upper floor deck, rather than reinforced concrete slab 75% Recycled Aggregates used in External Areas 80% Recycled content Roof Insulation 1% Reclaimed steel in Building Frame

41 Things that contributed to reducing the embodied CO 2 Fit Out 100% Recycled content Fermacell partition walls 40% Recycled content Strata flooring tiles 40% Recycled content in Interfaceflor Carpets

42 It can be very granular Embodies carbon Operational carbon

43 Results embodied carbon: building zones

44 In summary... Methodology to calculate embodied carbon in a building s construction life cycle, 2014 Global guidance note Life cycle embodied carbon methodology Based on BS EN ISO / High level Aimed at the QS

45