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ceiling joist spans
Posted: Thu Dec 11, 2008 11:09 am
by fenderman
Can anyboby tell me the span for 6"x 2" at 8"/ 200mm centres or if they were doubled ie bolted together to be 6"x 4" at 16"/ 400mm centres
Posted: Sat Dec 13, 2008 10:41 am
by stoneyboy
fenderman,
There is not straight answer to this question.
If you were to use graded timber (C14) and it was 150x50 at 400mm centres the beams could take a UDL of 75kg/sqm over a 3m span. Your suggestion to double up the timbers and double the centres would make no gain.
end
Posted: Tue Dec 16, 2008 6:50 pm
by Perry525
It is traditional to increase the thickness of a joist where it will carry the weight of an upstairs fireplace or to double the joists when carrying a upstairs block wall.
What are you trying to do?
Posted: Fri Jan 30, 2009 9:16 am
by TheDoctor5
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