Acton Ostry Architects

Due to the prohibitively high cost, developers have not yet embraced the construction of tall wood multi-unit residential buildings. The rising cost of concrete in Vancouver, combined with a cost premium associated with mid-rise concrete buildings, led to a feasibility study that demonstrates a “short wood” building can be comparable in cost to a concrete equivalent. Building codes currently prescribe noncombustible construction or encapsulated mass timber construction for residential buildings up to twelve storeys in height, with no distinction for lower-height mass timber buildings, thereby leading to construction inefficiencies and increased costs for wood mid-rise buildings. Short Wood 8 proposes an eight-storey prototype made up of CLT floor slabs, CLT shear walls and load bearing wood-frame walls that provides an innovative cost-competitive alternative to conventional concrete mid-rise residential buildings that exceed six storeys in height.

project

Short Wood 8

location

Vancouver, BC

client

UBC Properties Trust

completion

2023

size

6,400 sqm

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entry approach

sustainability

LEED Gold
mass timber

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compact form

Short Wood 8 responds to world-wide interest by proposing an eight-storey wood-frame and mass timber building system that maximizes the inherent positive attributes of wood for the high-rise multi-unit residential market.

UBC Properties Trust

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wood-frame and mass timber structure

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section

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end view

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load bearing walls and CLT panel layout

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2-bedroom suite

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entry lobby

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amenity

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suite entry

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standard suite

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CLT stair core

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CLT and roof components

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CLT and acoustic separation components

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CLT and concrete slab components

Short Wood 8 demonstrates that it is now economically feasible for a hybrid wood-frame and CLT structural system to rise above the current six-storey building code limit.

UBC Properties Trust