Piers has been appointed as Passivhaus Consultant on a scheme to build 26 Passivhaus dwellings on the site of the former bingo hall in North Street, Bristol. The project team for the development, known as Picture House Court is as follows:
Developer - North Street Investments
Architect - Origin 3 Studio
Passivhaus Consultant - Piers Sadler Consulting
Passivhaus Certifier - BRE Certification
Structural Engineer - Hydrock
M&E Engineer - Hydrock
Project Manager - Aecom
Main Contractor - Speller Metcalfe
Construction work started on site in 2013, but was stopped whilst a new team was appointed for the project. Work is about to start on site agin, and whilst Passivhaus work was done before the original start on site with Origin 3 working with BRE, there is still a lot to be done to confirm the suitability of the designs and performance through PHPP.
These are relatively complex buildings, so there is a lot of work going into thermal bridge free and airtight design. Airtightness is clearly going to be the key challenge. To get up to speed with the project quickly and aid the smooth running of the Passivhaus consultancy Piers was co-located with Origin 3 Studio for about 6 weeks at the start of the work.
Heating with air incorporated into the MVHR. Hot water is with solar thermal and electric immersion heater back up.
Working with Origin 3 Studio and Warm, Low Energy Building Practice we are having to model all the thermal bridges in three of the four buildings (about 50 so far) because we need some positives to cancel out the negatives. Fourth building is timber frame by Cygnum who will be responsible for thermal bridge free design through most of that building.
Started using Design PH on this, but my experience was that this gave rise to disorganised information in PHPP - instead I used Sketchup for areas and thermal bridge lengths but entered the data manually into PHPP.