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Hi, I am currently designing a foundation for a substation breaker, which is basically a rectangular tank with cylindrical bushings on top of it. When developing wind loads on the tank portion specifically, we currently consider the breaker a solid sign, with the legs supporting it above the...

All, just closing the loop on this, I ended up using an ordinary steel cantilever column system selection, based on superscript “l” in the table in ASCE 7. This removed any seismic detailing considerations. Thanks for your help!

Sandman, can you elaborate? For a 13' tall cantilever column structure, how are braces intended to be configured? I am using an HSS column, and the entire column will technically be unbraced (fixed at the bottom). Not sure what I'm missing here.

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Hi all, I’m currently designing a solar carport/canopy to be installed in a parking lot in California. SDC D. The structure consists of a single row of HSS steel columns supporting WF “girders” (moment connections) with wide flange “purlins” spanning between (pinned connections). I have...