These joists, which bear the name of Open Joist TriForce, are deliverable in 9 ½", 11 7/8", 14" & 16" height, for spans up to 30'.
Advantage
Competitive price
Adjustable
Disadvantage
No disadvantage observed
These data are based on a spacing of 16" C/C of the joists and are calculated with live loads of 40 lbs/square foot, dead loads of 15 lbs/square foot and a deflection of L/360.