Government of Canada Building, Yellowknife,
A LEED® Gold Project
Canadian Poster Project Entry, International Green
Building Challenge, 2005
This 7,200 square metre office building is the first
project north of 60° to seek a LEED Silver or
higher certification. Also called the Greenstone Building,
it was intended to demonstrate the Government of Canada’s
commitment to environmental protection.
In spite of the extreme climate, this building is
the best energy performer in our entire portfolio,
bettering ASHRAE 90.1-99 by over 55% in energy consumption
and costs. This is roughly equivalent to a 65%-70%
reduction compared to the Model National Energy Code
(MNECB) CBIP Reference. The project owner, Public
Works and Government Services Canada, states that
the estimated savings to Canadian taxpayers are $70,000
per year and the reduction in greenhouse gas emissions
is around 370 tonnes per year.
This building is an exceptional example of how important
massing and building orientation can be to building
performance. We suggested rotating the V-shaped plan
180 degrees toward the south and reconfiguring the
atrium that filled the void between the building wings.
The energy savings that resulted from this simple
adjustment were substantial. Other features include
a high performance envelope with three and four-element/pane
spectrally-selective glazing, a simple compartmentalized
HVAC system with demand-controlled ventilation and
high performance plant, low energy lighting design
with automatic daylight controls, and building-integrated
photovoltaics on the atrium face. Low-flow plumbing
fixtures are used throughout.
We provided design facilitation, energy engineering
and simulation, and detailed design support addressing
all aspects of energy performance of the architectural
and building systems.
Manasc Isaac Architects
Photos: from the architects