|
Engineering advice needed for steel floor supports
I want to span 3 meters with steel joist and I'm not sure what sizes to use. Basically I'll have 4/100x100x3 steel posts in each corner for a suspended 3meter x 3 meter floor.
what size bearers and joists will I need. I'm considering either 100/12 or 115/15 C Purlins or 100X50X2 RHS for bearers and 75X50X2 RHS for joists. I'd much rather use the C Purlins as they are considerably cheaper but will they support the 3 meter span.
What about if I were to place a third bearer across the middle with a post at each end? (It would also help take some of the "flex" out of the floor) It's a fine line between paying for extra posts and bearer to going slightly larger and thicker with the joists.
|