Issue link: http://digital.canadawide.com/i/1295215
O C T O B E R 2 0 2 0 | 11 Building Envelope P H OTO G R A P H Y CO U RT E SY R J C B U I L D I N G S C I EN C E A N D R E S TO R AT I O N That aside, and recognizing curtain wall technol- ogy will continue to adapt and improve, we're seeing more of an appreciation for how proper calculation and modelling leads to efficient enclosures that live up to standards such as NECB 2017 nationally, the BC Energy Step Code, and the Toronto Green Standard." Although architects are ultimately responsi- ble for the performance of an envelope, Bergen and Pickwick view the emphasis towards energy efficiency as an opportunity for that profession to employ a host of solutions. The latter says, "fram- ing, window-to-wall ratio, cantilevered balconies, architectural expression of concrete, structural components, and many other creative elements each play a role in creating an enclosure that avoids thermal bridging and achieves a high level of air- tightness that lives up to energy standards." The duo welcome the increasing focus on proper calculation and modelling, as no amount of physi- cal testing or field observation can compensate for an envelope whose design was flawed from the out- set. "Being able to verify the integrity of the design is vital, and while many programs can model a build- ing enclosure's performance, the results are only as good as the inputs provided," says Pickwick. In layman's terms, the closer a project comes to creating the ideal envelope, the more emphasis on effective ventilation to capitalize on heat recov- ery and at the same negate the health concerns sometimes associated with air-tightness. "When the mechanical consultants and trades know the metrics they have to account for, they can more effi- ciently design and build to them," says Pickwick. Capital Park 4, Victoria, B.C. TRS BUILDING ENVELOPE TOMTAR ROOFING & SHEET METAL Unmatched Industry Experience Celebrating TOMTAR'S 40 th and 75 th Serving the Interior & Western Canada BARR & ANDERSON 1898 M.J BARR & J.G. ANDERSON BARR & ANDERSON KELOWNA 1945 HAROLD GREENOUGH & BOB DILLABOUGH TOMTAR ROOFING & SHEET METAL 1980 THOMAS GREENOUGH TRS BUILDING ENVELOPE / TOMTAR ROOFING & SHEET METAL THOMAS GREENOUGH & ROBERT GREENOUGH TRSADMat.pdf 1 7/17/20 1:33 PM Roofing & Sheet Metal.indd 1 9/14/20 4:24 PM Euclid Admixture.indd 1 2016-12-20 12:54