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P/M Diagram

P/M Diagram

P/M Diagram

(OP)
Does anybody know where do get a P/M interaction diagram when F'c = 4500 psi?

 

-Robert Miller
KPA Structural Engineers

RE: P/M Diagram

I'd either take the time/trouble to construct it myself or use PCA's column program.
 

RE: P/M Diagram

Many concrete textbooks have p/m diagrams. I don't use imperial units so I assume that 4500psi is a non-standard concrete grade. I would either:

1. Use charts published by a good source for the next lower grade of concrete.
2. Use a god design program that allows the user to input the concrete design grade.
3. Nut the calculations out by hand old-school style

RE: P/M Diagram

Use the P/M diagram for 4000 psi concrete and thank your lucky stars that you have a margin of error working in your favour for a change.

BA

RE: P/M Diagram

Personally I would probably go with BA's suggestion.

Column reinforcement is generally only 1 or 2% of the total reinforcement so being a bit conservative there is not going to be an issue.

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