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  1. theclimber

    How to calculate rafter thrust? -Help!

    I have built a new roof over my house. It's a 12:12 pitch and spans 22' total. This will be a cathedral ceiling, but I installed a ridge board (2x12) not a ridge beam. I have installed collar ties (2x4@16"oc)at about 8' high above the plates. I installed the rafters (2x8 16"oc) to a 2x12...

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