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Design Load Combinations of the 2015 and 2018 IBC
February 21, 2019 @ 11:00 am - 1:30 pm
The design load combinations in Section 1605 of the IBC and the load combinations with overstrength factor in ASCE 7 Section 12.4 are known to cause a lot of confusion among code users. This web seminar is aimed at removing that confusion by explaining the strength design, the basic allowable stress design (ASD), and the alternative basic ASD load combinations in Section 1605 of the IBC. The equivalency or lack thereof among the three sets of load combinations is discussed as well as advantages of using one method over another. It is pointed out that IBC Section 1605 requires the use of the load combinations with overstrength factor in Section 12.4 in certain situations. These situations and the load combinations with overstrength factor themselves are explained. Changes in design load combinations from the 2015 to the 2018 IBC are described and discussed. Numerical examples are given of combining load effects using the load combinations in IBC Section 1605 and ASCE 7 Section 12.4.