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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...
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...
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...
I recommend using ASCE 7-22, which is now consistent with the 2017 edition of SEAOC-PV2. And I suggest reading all of Chapter 29 of ASCE 7-2. 2 The prescriptive pressure coefficients are plotted against the NORMALIZED effective wind area. This is not the same as the effective wind area. The...
The question relates to the ASCE 716, Section 29, regarding the lift under PV modules. We are doing work designing PV solar rooftop attachments. We were specifically directed by the engineering department of the AHJ to use the area of a SINGLE module, instead of the array area for a contiguous...
Minimum Design Loads and Associated Criteria for Buildings and Other Structures, ASCE/SEI 7-22 provides the most up-to-date and coordinated loading provisions for general structural design. This standard prescribes design loads for all hazards including dead, live, soil, flood, tsunami, snow,...