This occupation is included in the larger group of pipelayingfitters, pipefitters, and plumbers.. The median wage for this groupis $4,781 per month ($27.58 per hour). Half of all of these workersearn between $3,602 and $5,651 per month ($20.78 and $32.60per hour).
When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. A double 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on.
The total height will be the nominal size of your floor joists, ie; 6 is actually 5 1/2, and 8 is actually 7 1/4, plus your subfloor which is usually 3/4 plywood or OSB, plus your finished ceiling which is usually 1/2 or 5/8 drywall.Source(s): National Building Code.Building Inspector Â· 9 years ago.est Answer: Use the span tables out of your local Building Code to determine the size of the joists you will require in relation to the span between supports. The National Building Code permits 2x6 @ 16 c/c to span 9' 5. If your span is greater you will most likely need 2x8 or 2x10.