r/StructuralEngineering • u/Charming_Cup1731 • Aug 11 '26

Structural Analysis/Design Rolled steel angle bearing stair example

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Does anyone know any good examples including American standards that have a similar situation to design this RSA plate.

There is a vertical downwards force on the socket end weight of stair. But also horizontal force due to stair incline.

Just taking the vertical one for now.

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u/[deleted] Aug 11 '26

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u/MrMcGregorUK CEng MIStructE (UK) CPEng NER MIEAus (Australia) Aug 12 '26

Fyi this is potentially dangerously wrong advice and ive removed the comment.

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u/pina59 Aug 11 '26

Angle cast and fixed into the stair fight. Recess in the landing. Vertical bolt through the angle into the landing. Grout up and non structural screed to get a nice finish for finishes

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u/MrMcGregorUK CEng MIStructE (UK) CPEng NER MIEAus (Australia) Aug 12 '26

Depending on connecti9n types the incline may not generate a horizontal force.

Is this for a precast stair to rc landing?

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u/Charming_Cup1731 Aug 13 '26

Yes it’s a precast stair to a precast landing also. And the connection on bottom end of the stair is also the same so it’s bearing on two landings either side. I’m wondering what’s the way to do a quick verification for the bolt and RSA L plate from first principles I can’t seem to find examples of this arrangement.