Select the type of shell for this shell section. The thickness of an elliptical head is analyzed as an equivalent spherical head, as specified in the Code, paragraph UG-37 (a). Similarly, the thickness of the spherical portion of a torispherical head is analyzed using the same paragraph.
You must enter the required thickness (below) under the following circumstances:
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Bolted Flat Heads - Calculate the required thickness using the Flange module and enter it in. Additionally, the software automatically reduces the required area of reinforcement if you specify a flat head per UG-39(b)(1).
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Any other geometry not covered by the program.