Steel Joist Loading

[tlona]

Do the load tables in the SJI handbook already have a safety factor built in. I am trying to determin the loading of a roof and have 22H6 joist at 6ft spacing. I I use the live load (228plf) for this joist at 30ft. span this gives me 38psf. Would this be the loading or should I add safety to the 38psf? Thanx

 

[dgkhan]

table shall have build in safety margin

 

[JAE]

Yes, check the SJI specifications where they provide the design criteria for steel joists. The safety factors are similar to that used by ASD for steel shapes.

 

[tlona]

Thank-you all so much for your help. It is greatly appreciated