Dedicated to sustainable,
high performance building

Integral Group Studio

Calgary, AB

Interior Design Award

Jury Comment: As we take on the challenge of circularity in the construction industry, this beautiful contemporary office interior shows what is achievable using reclaimed materials with a combination of commitment and creativity. The sources of materials are diverse, but the resulting design is cohesive and inspiring.

Even for an interior tenant fit out like this one, location is key. The Integral Group chose the location for their new offices in the Telus Sky Building based on walkability and proximity to transit; and in the Telus Sky Building, in particular, because it was designed to LEED Platinum standards, incorporated operable windows, natural light, and displacement ventilation.

The overall office design fosters a sense of community through a central kitchen and the inclusion of areas for social interaction, including a boardroom table that converts to a pool table. In addition, a lactation room welcomes working mothers and doubles as a quiet room for those in need of a minute alone. The goal was to create a fully inclusive working environment; and all spaces within the floor plan, including meeting rooms and offices, were designed to be fully accessible.

The main door to the office was shifted to be located equidistant from the stairs and elevator to encourage staff to take the stairs when possible. The building has a triple-glazed curtain wall system with low-emissivity coatings to allow daylight into the space while maintaining thermal comfort and reducing heating and cooling loads. Operable windows allow occupants to have fresh air, limiting the amount of mechanical ventilation required. A heat wheel reduces the heating and cooling load which reduces energy use.

The all-LED lighting is equipped with occupancy and daylight sensors located throughout the office to optimize occupant visual comfort and reduce energy use. The projected annual energy consumption for the office space is approximately 177 kWh/m2.

The project had a lofty goal to exceed 100% of waste diversion from landfill, which meant diverting waste not related to this project. Many of the materials selected were salvaged from other project sites or other uses and re-purposed for this project.

The all-LED lighting is equipped with occupancy and daylight sensors located throughout the office to optimize occupant visual comfort and reduce energy use. Fan coil units were supplied by Daikin Applied.

Project Credits

  • Owner/Developer  Integral Group
  • Architect LOLA Architecture
  • General Contractor  Eton-West Construction (Alta) Inc.
  • Electrical/mechanical  Integral Group
  • Commissioning Agent  Integral Group
  • Photos  Chris Amat

Project Performance 

  • Energy intensity (building and process energy) = 177 KWhr/m²/year
  • Energy intensity reduction relative to reference building under NECB 2011 LEED ACP = 7.2%
  • Water consumption from municipal sources = 7,400 litres/occupant/year
  • Reduction in water consumption relative to reference building under LEED = 20%
  • Recycled material content by value = 20%
  • Construction waste diverted from landfill = 100%

Kitsilano Duplex Retrofit

Vancouver, BC

Residential (Small) Award

Jury Comment: Given the requirement to maintain the historic character of the neighbourhood, and the imperative to add density by creating a duplex, meeting Passive House performance at this scale is a remarkable achievement. This project should be an inspiration for others like it in Vancouver and elsewhere.

A rare Canadian example of a Passive House EnerPHit retrofit, this duplex was fashioned from a 1940s single-family home.  The original home had been in the same family since the 1950s and had recently been gifted down to the grandson and granddaughter of the original owner. They decided to convert the house into a duplex, keeping one half each, but also decided to upgrade it to meet Passive House standards.

Development in much of Vancouver’s Kitsilano neighbourhood is subject to character retention guidelines; and balancing the required upgrade to Passive House thermal performance with the need to maintain architectural heritage was very challenging. However, by choosing to renovate rather than demolish the house and build new, the owners were able to retain more than 60% of the original framing material.

This dramatically lowered the embodied carbon of the building. By adding new structure to the existing framing, it was possible to bring the house up to current structural and seismic standards, while using far less new material than would have been required in an all-new building. Less new material, also translated into less construction waste.

It was necessary to lift the house to install a new crawl space basement which acts as a mechanical room and storage space. To further reduce embodied carbon, a ‘concrete free’ basement slab was installed, constructed with two layers of 15mm plywood laid directly on rigid insulation and compacted gravel.

The completed duplex is fully electric, with both electric heating and hot water. Rough-ins for air-to-air heat pumps were also made for future space cooling if needed. As summers in Vancouver are getting warmer, space cooling may become necessary for comfort in many buildings. The duplex is expected to use approximately 14 kWh/m²/year and is Passive house certified. Triple pane PH-certified wood windows are used within a wall assembly that consists of 2×6 framing with 4” of exterior mineral wool insulation.

The house uses triple pane Passive House-certified windows and doors by VETTA Building Technologies Inc.

A Mitsubishi Electric Sales Canada ductless heat pump handles heating and cooling.

Project Credits

  • Architect  DLP Architecture
  • General Contractor  Geography Contracting
  • Photos  Michael Renaud

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PH1 – 1 Lonsdale Avenue

North Vancouver, BC

Commercial/Industrial (Small) Award

Jury Comment: This project is remarkable for its clarity of conception and program organization, as well as its effective utilization of a constrained site and positive contribution to the public realm. Its innovative prefabricated mass timber party wall sets a precedent, achieving Passive House certification on a zero-lot line infill site.

This is a small restaurant and office infill project in the Lower Lonsdale district of North Vancouver, originally an area of waterfront warehouses and marine service facilities, the neighbourhood has been transformed over time to a high density, mixed-use community centred on the Lonsdale Quay Market and Seabus Terminal. The consolidation of land required by the introduction of higher density zoning had left lots like this exceptionally difficult to develop.

The long-time owner of the site was eager to create a high-performance, environmentally responsible building that would set an example for others to follow.

A waiver of the on-site parking requirement made it possible to design a three-storey building, with a ground floor restaurant and two storeys of offices above, however, the 92% site coverage eliminated the possibility of an on-site staging area for materials and equipment, typically required for site construction.

The decision was made to design a prefabricated mass timber structure to Passive House standards, with structure and envelope components (including a PH-compliant zero lot line party wall) delivered by truck and assembled on site.  The design, detailing and construction sequence were optimized using an integrated design process and virtual construction modelling software.

The north wall abutting the adjacent property comprises full-height CLT panels with exterior insulation and metal cladding fastened with Cascadia clips to reduce thermal bridging.

Project Credits

  • Owner  Babco Equities Ltd
  • Architect  Hemsworth Architecture
  • Structural Engineer  Equilibrium Consulting Inc.
  • Mechanical / Electrical Engineer  MCW Consultants Ltd.
  • Civil Engineer Vector Engineering Services Ltd.
  • Geotechnical  GVH Consulting Ltd.
  • Building Code Consultant  LMDG
  • Passive House consultant  Peel Passive
  • House Consulting Ltd.
  • Landscape Architect  Prospect & Refuge
  • General Contractor  Naikoon Contracting Ltd.
  • Photos  Ema Peter

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