RJC Engineers was retained as the energy consultant for The Wilfred, a four-storey wood-framed mixed use development.
RJC’s role was to demonstrate compliance to the requirements of Step 3 of the BC Energy Step Code.
Several Energy Conservation Measures (ECMs) were developed to meet the energy requirements, including high performance roofs, high performance wood-framed exterior walls (R-22+ Effective), high performance concrete exterior walls (R-16+ Effective), high performance double-glazed windows for residential spaces (U0.25 SHGC-0.4), and high performance triple-glazed storefront windows for commercial spaces (U0.25 SHGC-0.25).
Other ECMs included an air-tight design for the building enclosure through enhanced air barrier commissioning (0.1 L/s/m2 at Operating Pressure for Residential Portion), reduced lighting power density in all common areas and the parkade, an energy recovery ventilator for all suites and commercial spaces, and a gas-fired condensing water heater for the domestic hot water system.
A comprehensive thermal comfort analysis was also performed to align with the requirements of ASHRAE 55-2010 and the City of Vancouver’s Energy Modelling Guideline.
The window schedule was modified to assure occupant thermal comfort and effective natural convection through the suites.
Building Structure Type
W. Dowad Ltd.
Brigitte Loranger Architecture & Planning
G. Smillie Holdings Ltd.