Concrete-Strength Design-Load Factors
Concrete-Strength Design-Load Factors
(OP)
1997 UBC and 2000 IBC started using lower load factors for DL and LL (1.2 and 1.6). ACI 318-99 kept the higher load factors (1.4 and 1.7). Am I missing something? I don't see anything in UBC or IBC to compensate for the lower values, such as lower phi factors.






RE: Concrete-Strength Design-Load Factors
For now, you can choose, but eventually ACI will totally convert to the newer factors to be consistent with the IBC.
RE: Concrete-Strength Design-Load Factors
I looked all thru IBC 2000 yesterday, and could not find any reference to adjusted phi factors that correspond to the lower load factors. If you can find any such reference when you have access to the IBC I would appreciate it.
RE: Concrete-Strength Design-Load Factors