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LCRA

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Dr. Huajie Liu, P.E., M.ASCE

LCRA

Contributions

1 to 5 of 5 total

Wind Loads for Elevated Beach House

Posted By Huajie Liu 11-02-2022 02:55 PM
Found In Egroup: Peer-to-Peer Standards Exchange \ view thread
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 ------------------------------ ...

RE: AASHTO Bridge Design

Posted By Huajie Liu 11-01-2022 01:05 PM
Found In Egroup: Peer-to-Peer Standards Exchange \ view thread
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. ...

RE: Importance factor using 2 stage analysis

Posted By Huajie Liu 08-19-2022 06:19 PM
Found In Egroup: Peer-to-Peer Standards Exchange \ view thread
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, ...

RE: Imputing Soil Classes

Posted By Huajie Liu 08-02-2022 04:24 PM
Found In Community: Peer-to-Peer Standards Exchange \ view thread
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.

RE: Crane Loads

Posted By Huajie Liu 06-03-2022 04:55 PM
Found In Community: Peer-to-Peer Standards Exchange \ view thread
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 ...