Over the past two decades, new engineered mass timber products and construction techniques have changed the way we think about wood as a building material. Historic perceptions about strength, durability and fire performance have been overturned by scientific evidence and full-scale testing of prototype structures.
As a result, mass timber has begun to make its mark in the residential and commercial sectors, particularly on Canada’s West Coast. However, the market for industrial buildings continues to be dominated by tilt-up concrete and steel-frame construction, both of which have a significant environmental footprint. Tiltup concrete in particular has inherent disadvantages; concrete cannot be poured in the freezing conditions typical of Canadian winters, nor can it be easily insulated to reduce the operating energy requirements of the building.
However, the National Building Code of Canada states that a roof assembly in a building of up to two storeys is permitted to be of heavy timber construction regardless of the building area or the type of construction required, provided the building is sprinklered. In addition, the structural members in the storey immediately below the roof assembly are also permitted to be of heavy timber construction. These requirements apply equally to industrial buildings, meaning that heavy timber is a viable alternative to the materials traditionally used, and single storey industrial buildings may be constructed entirely of heavy timber.
This case study examines three recently completed industrial buildings in southern British Columbia, each of which uses engineered mass timber products and systems in a distinct and different way. Together, they offer insights into how industrial construction might evolve to offer greater environmental performance, speed and flexibility of construction, at little additional cost over traditional methods.
