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In ASCE 7-10, the design wind force for rooftop structures was revised to include a vertical component of wind force based on research, recently completed at the time, from the University of Western Ontario. Also, a new section was added for determining the Component and Cladding (C&C) loads on rooftop structures and equipment. Understanding the Wind Input 1/7/201 5 Components/Cladding ASCE 7-10 – Per the Commentary of ASCE 7-10 for Components and Cladding (CC), “Components receive wind loads directly or from cladding and transfer the load to MWFRS.” This method is the most conservative of the ASCE methods, since the.
ASCE 7-05 Effective Area for Parapet
ASCE 7-05 Effective Area for Parapet
I'm currently working on a project that consists of a PEMB as MFRS with our firm designing a brick and metal stud curtainwall system 17.33' tall. These studs are bypassing the PEMB system, being connected to a wind beam @ EL 15.17'. My question is in regards to both the design of the stud as well as the design of the connection. I'm contending that for design of the stud; parapet C&C pressure along with wall C&C pressure should be based on an effective area of the entire stud (17.33*17.33/3=100ft2) instead of the individual areas for individual pressures. This makes a significant difference in the deflection calculation and our office is in disagreement as to which way to move forward with this. Does anyone have any literature or insight addressing this situation?
Thanks for the help,
Brett
Thanks for the help,
Brett