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We call this process Chip Thinking®️.

Embodied carbon calculations were undertaken by Cundall, on behalf of Landsec.Cundall updated the calculations at every stage of design, from the Business as Usual (BaU) design in 2018, the incorporation of P-DfMA by Bryden Wood in 2019, through to completion in 2023.

The BaU scheme was a traditionally designed office building with a steel frame and a concrete slab, a large basement beneath both buildings and gas fired heating system.In contrast, the built scheme used P-DfMA, worked to minimise the size of the basement and decarbonised the MEP services using heat pumps..The results showed that the upfront carbon (the carbon used on day one to manufacture the materials, transport them to site, and to install them) was reduced by.

between the BaU scheme and the as-built performance of the P-DfMA scheme.This is a significant improvement which can be attributed to both the use of DfMA and the low carbon specification of materials..

Embodied carbon comparisons.

The breakdown on a whole life basis (the embodied carbon both on day one and ongoing across the next 60 years, accounting for any maintenance and repairs and what happens when the building or components are at their end of life), shows the superstructure, external wall including curtain walling, and MEP to be the predominant contributors to the whole life carbon.Skill shortage and understanding.

There is a lack of large-scale builders who can deliver Passivhaus buildings.These projects can be seen as bespoke and are more expensive.. Bryden Wood’ response to Passivhaus’ challenges.

Bryden Wood is an industry leader in the adoption of Platforms-based Design for Manufacture and Assembly (P-DfMA) and has always shown a keen interest in the adoption of the newest and more advanced sustainability certification schemes, such as Passivhaus.. Our experience indicates that the standardisation process of P-DfMA, can be a suitable approach to counterbalance Passivhaus’ challenges described above, as follows:.Reduced design cost and complexity:.