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Durability of fast- and slow-grown Douglas fir in above ground exposures in Australia
2023 - IRG/WP 23-11009
Natural durability is a key property for untreated timber used outdoors and exposed to the weather. The natural durability of fast- and slow-grown Douglas fir heartwood was compared in an above-ground L-joint field test near Brisbane, Queensland, Australia. The L-joint test provides conditions that are favourable to decay. Fast-grown (regrowth) Douglas fir had ≤ 10 growth rings per 50 mm, while ...
L P Francis