b'PROJECT TEAMOWNER: City of VancouverARCHITECT/DESIGNER:ACDF Architecture (design architect)& IBI Group (architect of record)DEVELOPER: Grosvenor Americas GENERAL CONTRACTOR: Ledcor GroupMECHANICAL ENGINEER:Integral Group LLCPASSIVE HOUSE CONSULTANT & BUILDING ENCLOSURE CONSULTANT: Morrison Hershfieldattachment thermal clips to increase to 32 inches horizontally and 24 inches vertically. This improved the exterior wall thermal resistance and allowed the exterior mineral wool insulation to be reduced from 254 mm to 203 mm.We also had to deal with a specific thermal bridge problem on the concrete roof caused by penetrations for the mechanical and building maintenance systems, says Padraig McMorrow, Associate Architect for IBI Group, the architect of record for the project. We used a structural thermal break of two-inch polyurethane to mitigate each access hole in the roof.Passive House buildings are starting to have a serious impact on the B.C. market, spurred by the Provinces desire to achieve net-zero emissions for new construction by 2030. The building at 825 Pacific Street is a shining example of this provincial target. A number of other Passive House structures are also being built or proposed in B.C., including a 60-storey tower in down-town Vancouver that will be the tallest Passive House building in the world.It appears B.C.s net-zero emissions mandate is starting to become a reality as low-carbon energy options are explored in the building sector. As Belton notes, The cheapest and cleanest energy is the energy wedont use.SPRING/SUMMER 2022 17'