Modify AISC Safety Factors

There is no way to modify the design strength calculations as the safety factor is inbuilt. As a workaround, you may define a few additional load combinations for design where you may apply a factor of 1/1.67 = 0.6 approx. on top of the usual combination factors. For example if your usual combination is

LOAD 100 : DL + LL
REPEAT LOAD
1 1.0 2 1.0

You may create an additional load combination 200 and use that for design

LOAD COMB 200
100 0.6

Where Load case 1 = DL and Load case 2 = LL

There is no way to modify the design strength calculations as the safety factor is inbuilt. As a workaround, you may define a few additional load combinations for design where you may apply a factor of 1/1.67 = 0.6 approx. on top of the usual combination factors. For example if your usual combination is

LOAD 100 : DL + LL
REPEAT LOAD
1 1.0 2 1.0

You may create an additional load combination 200 and use that for design

LOAD COMB 200
100 0.6

Where Load case 1 = DL and Load case 2 = LL

Hi Sye,

Thank you, this method might work, I will give it a try.

What about increasing the Utilization Factor (RATIO) to 1.0 x 1.67? Could this work as a workaround?

Specifying RATIO may not work for all cases. For example interaction equations like H3-6 or H1-2 which are not linear