Embodied carbon calculations were undertaken by Cundall, on behalf of Landsec.
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:.The standardisation process reduces the number of construction elements which in turn dramatically reduces the number of elements and potential thermal bridges, making the design simpler and more cost-effective.
The repeated use of the same details significantly reduces the design cost and complexity, and facilitates the achievement of Passivhaus’ thermally bridge free design ethos..Being able to deliver Passivhaus detailing onsite requires complex coordination, overlap of materials and components and accuracy in order to achieve the specified final performance and certification.
A P-DfMA approach ensures the highest quality, working with reduced tolerances which align with Passivhaus requirements..
Reduced capital cost:.A high-quality component has more value than its individual parts.
Not only can it be reused in its component form but it can be disassembled further in a local offsite facility, reducing on-site pollution.This provides additional opportunities for reusing materials.. Use technology for green buildings.
Using digital design tools as part of a sustainable construction strategy enables exact material quantities to be determined, down to the number of screws and bolts required for a building.This allows materials to be ordered with minimal wastage.. Material passports can be assigned to every material within the building, listing out its environmental and technical performance.