Description
These joists, which bear the name of SP-4, are deliverable in in 9 ½", up to 24" & + height. There is no real height limit, they will have the necessary height to support the floor loads for spans up to 39'-5".
Advantage
Custom made, no adjustment necessary
Possibility of making specific spaces for mechanical components on request
Possibility of using the joists in top chord bearing configuration
Disadvantage
Not adjustable, custom made
Price a little higher
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.
The span of 39' - 5" is not a limit, but rather the maximum span for a joist of 24" in height. There is always the possibility to make joists of this type with more height and thus to cover even longer span.