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We design solar carports, and have run into an issue that has been causing some issues at particularly short spans. According to ASCE7-16 Figure 30.7-1, we are allowed to interpolate between roof angle but there is no mention of interpolation for effective wind area. On many similar figures in...
This message was posted by a user wishing to remain anonymous Hello, Is there an official source of the ASCE wind speed map shapefiles? I would like to have a better source of the shapefiles including the shape of each wind speed lines to plot some figures. Thank you.
Hi Christian, Thanks for your excellent and thoughtful input. I especially enjoyed your style which makes it entertaining to read so thanks for that also! I hadn't considered items in your third paragraph, which offer a great perspective. In fact that's currently the best explanation and...
Hello Keith, I can't answer your question with any authority, but I'll share my thoughts and provide context. You probably already know some of this, just trying to cover all bases. Drawing heavily from two webinars presented by Emily Guglielmo: SEA-MW September 2021 Meeting, and Session 1 of...
Hi Thomas, My first take is similar to yours, that it might be an error. However note that for this section the commentary explicitly acknowledges that the zones are larger (see the last 2/3 of the first paragraph C29.4.3). Also I note that the figure in the commentary C29.4-1 repeats the...
Hi all, My question is about ASCE 7-16, Part 4 of Chapter 30 (C&C) and particularly how to apply Notes 3 and 4 of Table 30.6-2. As an example, let’s consider a gable roof with the following details: h = 70’ Θ = 10 deg Exposure C V = 100 mph Zone 3e (edge corner of roof) Effective Area = 10 ft2...
The "Building Roof Plan" in Figure 29.4-7 of ASCE 7-16 indicated that the width of Zones 2 and 3 is 2h where h is the height of the building at the eaves. Shouldn't this read 0.2h, which would be more in line with Figures 28.3-1, 28.5-1, 30.3-1 and, more applicably, 30.4-1 or 30.6-2 for flat...
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