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A friend who is designing an elevated beach house asked me a question about the wind load underneath the house. He could not find provisions in ASCE 7. Should he consider wind load under the house? If no, why not? If yes, how? Thanks! #WindandWindLoads ------------------------------ ...

Daniel, Thanks for posting your question here. Please refer to AASHTO LRFD Bridge Design Specifications for the definition and background of Kg and AASHTO Manual for bridge evaluation for additional info and examples. You are more than welcome to post questions on ASCE 7 and other ASCE standards. ...

Hi Mario, Section 1.5.2 is the appropriate provision. It states that where the portions of a building have independent structural systems, different Risk Categories may be assigned. However, the word independent is key. Since the upper wood frame portion is supported by the lower concrete frame portion, ...

Please read section 11.6 of ASCE 7-22, which describes how to determine Seismic Design Category based on Risk Category and the value of SDS and SD1. In this case it appears that the correct SDC is D for both site classes.

The basis for the crane vertical impact forces in Section 4.9.3 of ASCE 7-16 are not provided in the standard itself or the commentary. The 25% increase in wheel loads has been in the standard since at least the 1972 edition, when it was ANSI A58.1. The 10% increase in wheel loads was added in the 1995 ...