Sistering broken rafter in attic for roof repair June 2013
Автор: 3beltwesty
Загружено: 2014-11-07
Просмотров: 181162
Giant fender washers and skinny 1/4-20 bolts used to preload the joint so the preload will creep less. The big washers distribute the load to the wood well. A smaller diameter bolt is a lazy spring thus the preload drop with creep of the wood is less.
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