Timber reinforcement checks to SIA 265: screws and rods
Screws and rods reinforcing bearings and curved beams.
Modules
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Compression reinforcement of a bearing
A bearing reinforced with fully threaded screws or rods: timber and screws together, then the timber at the screw tips.
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Reinforcement of a curved or tapered beam
Glued-in rods, screws or bonded plates taking tension across the grain in curved, pitched-cambered and arched beams.