| Stiffener Fy |
Specify the yield strength of the stiffener plates. |
| Stiffener Dimensions |
Specify the minimums and increments of the dimensions of the stiffener plates. The program will select stiffeners, when necessary, that are sized as required but that are at least the minimum size specified. The sizes are rounded up to the multiple of the increment specified. |
| Stiffener Location |
Stiffeners placed on only one side of the web are often acceptable and more economical. They are not always desirable, however, because they cause the beam to be asymmetrical (which can be a problem in cases of long unbraced lengths). The program will investigate the design of web openings with stiffeners on one side of the web if that option is selected, otherwise it will not.
Note: It may be more economical to use deeper, heavier beams rather than adding stiffeners. If neither option to allow stiffeners is selected, the program will optimize to the beam size that does not require stiffeners at the openings. On the other hand, if depth of beams is a concern, lighter, shallower beams may be acceptable if stiffeners are allowed.
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