Steel Roof Beams Span Tables

Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002.

Steel roof beams span tables. These span tables have been prepared for a range of flooring and roofing applications in non cyclonic wind regions using boxspan steel beams and brackets produced by spantec systems pty ltd. Design of single span roof beams in roofs in houses office buidlings schools and other structures. Unique strength unlike other steel rectangular hollow sections rhs boxspan has the unique qualities of having a double thickness flange and a single thickness web that effectively puts the strength where it needs to be. Appendix c span tables c 1 introduction this appendix has been taken from the onesteelpublication design note no.

In most applications boxspan beams require less depth than timber to reach the same span. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Beam calculator clearcalcs timber steel framing manual single span roof beam steel beam calculator user deflection limit for steel beams supporting masonry parions steel c channel sizes structural. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

It is intended that these tables will be used by engineers to assist in the preliminary design. This design notes section shall be read in conjunction with boxspan residential span tables non cyclonic areas publication.