Steel structure

[Eabrar]

Hi,

We require some structure material urgently, but the material available in the market is not of AISC standard. The structural material quoted by the vendor have web thickness lower and have flange thickness larger then that stated in AISC. Vendor have also quoted that the moment of inertia of those beams is greater than that in AISC standard.

My question is that whether we can use this material on structure designed on AISC standard or not?

 

[civilperson]

Chemistry, yield, hardness, etc. should be checked. Any shape can use the rules in AISC, but the tables are not of any use.

 

[Lion06]

Also to consider - while the shapes may have higher I and S values, the fact that the web is thinner will most likely put the governing failure mode as buckling instead of yielding. You will most likely get smaller allowable (or ultimate) moments from these shapes.

 

[dik]

You'll have to classify the material based on b/t ratios, at least in Canada. These will determine the permissable stresses.

Dik