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  • Chris, Yes, that is exactly what I needed.  I purchased ASCE7-22 this morning.  We work with no jurisdictions that have referenced it here so I many be a little behind.  Thank you very much, Dwayne ------------------------------ Dwayne Moench P.E., ...

  • Thanks Keith, my ears are burning. I intended to bring in the MWFRS provisions for comparison purposes, although in hindsight I did not state this clearly.  ASCE's testing would have either demonstrated that overhangs influence pressures on non-overhang ...

  • Dwayne, Yes, I think we've all wrestled with aspects that could be clearer but I'd also concede that we're a tough and varied audience.  That's why this forum is so useful!  I'd suggest carefully going over Chris' reply, which I interpret as it applies ...

  • Keith, You are exactly right.  I was never concerned about the canopy itself, just what appeared to be the results on the rest of the roof because the roof had a canopy.  And yes, I'm referring to C&C pressures. These graphs need a better explanation ...

  • Christian, I agree with Ron that you have the correct interpretation but I'm not clear that you're fully addressing Dwayne's question.  However you definitely get two gold stars for the research!  I do enjoy and appreciate your positive and sometimes ...

  • Dwayne, You are referencing ASCE 7-16 Fig 30.3-2D, and I agree the value of GCp is -1.8 for the roof and -2.6 for the overhang.  If you refer to ASCE 7-22 Fig 30.3-2D, I think it sheds some light on this topic.  In ASCE 7-22 Fig 30.3-2D they removed ...

  • Mr. Hamburger,  I see you are the chair of the ASCE7 Standards Committee.  If Christian's interpretation is indeed correct, would you agree that some clarification notes are necessary on the Figure 30.3-2A to 30.3-2G pages for the Overhang? Thanks, ...

  • Christian Parker's interpretation is correct. ------------------------------ Ronald Hamburger, SE Consulting Principal Simpson Gumpertz & Heger ------------------------------

  • Christian, I would tend to believe what you said about affecting the overhang only, but why the different GCp values for the same area of roof between the two figures?  If you note Area 1 and 2t are definitely not in an overhang area yet they have different ...

  • Dwayne, My interpretation is that when an overhang is present, the overhang pressure need only be applied to the overhang itself; not the entire roof.  In MWFRS roof loads, there is no penalty to the roof for having an overhang; only the additional pressure ...

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