Add in the Hub’s work on introducing APQP, and we will get a level of consistency into components, which will deliver a real benefit.
Whilst Passivhaus was originally developed for residential buildings in Germany, the standard and its principles can be adopted in all kinds of building types, locations and climatic scenarios, and respond to the effects of global warming..However, there are four important challenges for the adoption of Passivhaus:.
Increased design cost and complexity: It requires specific detailing of the envelope, high quality of construction and specific performance testing in order to get the building certified..Increased capital cost: The additional construction capital cost can vary from 8% in the most optimistic scenarios (Passivhaus Construction Costs – October 2019) up to 25%..Increased programme: Delivering a Passivhaus building can take longer.
Quality control on site is extremely important, strategies for airtightness require careful sequencing and interim testing and workmanship skills need to be of the highest quality..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.The conclusion may be drawn that although there is alignment between Company A and the Dweller, with affordability matching the lower returns; the great-place-to-live matching the social change agenda; and the habitability matching the reputation, there are some discrepancies with the Developer.
Their business model is different, working in and looking to protect a market with greater demand than supply they are looking for higher short-term returns and the market dictates that quality standards are not such an issue because Dwellers have so few options.The answer is not to try to design the impossible but to help to re-structure the whole value chain..
The idea of analysing the value landscape may not occur to most architects, designers or project managers; being more comfortable in focusing on the asset, the aesthetics, the technical details or the physical deliverables.However, without this context there is an inevitability that the true opportunity for value delivery will never be achieved.. Our Design to Value book, gives many examples where a multitude of stakeholders are brought into the arena of problem definition, problem solving, and design.
(Editor: Basic Speakers)