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Canadian Softwood Plywood (CSP/SPF)
Douglas Fir
Habitat:
The two varieties of Douglas-fir occur in quite different ecosystems.
The Interior variety grows in a variety of habitats including open forests
with pinegrass and mosses beneath. On the coast, the forests are much
more productive. Douglas-fir can grow with western red cedar, hemlock,
and grand fir, with a lush layer of salal, huckleberries, Oregon-grape,
and sword fern beneath.
Many animals eat Douglas-fir seeds, including squirrels, chipmunks,
mice, shrews, winter wrens, and crossbills. Bears often scrape off the
bark on young trees and eat the sap layer beneath.
Uses of Douglas Fir:
Douglas-fir wood has been highly valued since the first Europeans exported lumber in the 18th century. This dense wood is exceptionally hard, stiff and durable. Its strength and availability in large dimensions make it outstanding for heavy-duty construction such as wharves, trestles, bridge parts and commercial buildings.
| Plywood Manufacturing Standard CSA O151 | |
| Faces and Backs | Inner Plies |
| Western Hemlock True Fir Sitka Spruce Western Larch Lodgepole Pine |
Douglas Fir Western Hemlock True Fir Sitka Spruce Western White Spruce Western Larch Western White Pine Lodgepole Pine Trembling Aspen Balsam Poplar |