Standard Strength of Z-Purlins
Standard Strength of Z-Purlins
(OP)
Does anyone know what the standard strength for Z-pulins in 1982 was? 33ksi or 55ksi?
Any info on moment capacity tables for different sizes would also be helpful.
Thanks
Any info on moment capacity tables for different sizes would also be helpful.
Thanks






RE: Standard Strength of Z-Purlins
RE: Standard Strength of Z-Purlins
RE: Standard Strength of Z-Purlins
RE: Standard Strength of Z-Purlins
RE: Standard Strength of Z-Purlins
RE: Standard Strength of Z-Purlins
RE: Standard Strength of Z-Purlins
Knowing the dimensions and gage thickness, which can all be field measured, you can calculate your section properties very easily. If we assume a yeild strength, then you can calculate bending strength. However, I don't know how to calculate allowable bending for condition where the compression flange is not fully braced. I am sure there is a way for light gage, I just don't know it. Can anyone point me in the correct direction?
I have new catalogs for C and Z purlins with allowable bending based on braced length. But for investigation of existing buildings, with odd shapes, not sure what to do if the shapes don't closely match my catalogs. This was recently an issue for us, where I could not make 8" girts work, since they would have too long an unbraced compression flange. So i made them put in 8" structural shapes, instead of light gage. But they were not happy at all.
RE: Standard Strength of Z-Purlins