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Another Small ROR Observatory
With my pier completed and the posts and footings in the ground I am ready to start on the building proper. The Obs will be 1800 x 2400, sitting on six 100 x100 square posts. Just trying to work out the bearer and joist sizing and have found a range of views on this from basic timber garden shed to others with better specs than most homes built to standard spans.
What is adequate? I am leaning towards 145x75 for the bearers. Joist will be in hangers.
Last edited by glend; 09-01-2015 at 09:29 PM.
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