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I have a simple question, to which I have been getting conflicting answers:
Can I cut a section out of a flat roof joist to run through some ducting? Happy for it to be flat channel. The rafters are 170mm.
I've seen some info but think it's about floor boards:
I have seen enforcement plates, but only from the US.
One challenge is that the joist is only approx. 400mm long.
Can I cut a section out of a flat roof joist to run through some ducting? Happy for it to be flat channel. The rafters are 170mm.
I've seen some info but think it's about floor boards:
I have seen enforcement plates, but only from the US.
One challenge is that the joist is only approx. 400mm long.
