A36 steel strength

[IndMechJeff]

If I have 1/4" x 12" x 60" a36 steel how much weight can it handle before it permanently deforms?

 

[JAE]

Depends on the application of the load (where on the plate, over what area or line, in what direction) and also the nature of how the plate is supported (on edges, corners only, in the center, along one edge, etc.)

Your question is much to vague and general for any real answer.

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[IndMechJeff]

I'm sorry, I'm pretty new to all this. This 1/4" thick, 12" wide by 60" long plate would be supported on the edges as it's intended on being a ramp for an aggressive curb (just about a 90° angle). So the load would be rolling from the bottom to top.

 

[JedClampett]

I get 300 lb. at yield (using section modulus, not plastic modulus), but it would deflect elastically 3 inches with that load.

 

[IndMechJeff]

Supported on the long edges.

 

[dik]

Alec has a spreadsheet for this.... use the long length of say 30' to force it into 'one way' span. A 1' span for a curb is pretty agressive, too.

Attached.

Dik

 

[pinoycivilgeek]

If you exceeded the yield strength then it will deform until you reach 36 ksi which is its ultimate tensile strength

 

[JAE]

Pinoycivilgeek
I think you are incorrect. A36 steel has a min specified yield of 36 ksi and an ultimate strength of 58 ksi.

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[msquared48]

I think this is a deflection limiting condition rather than stress.

Are you dealing with vehicle loads, or pedestrian, or otherwise.

Need to know to determine the maximum L/XXX deflection ratio.



Mike McCann, PE, SE (WA)