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Mathcad - Empirical Equations
2

Mathcad - Empirical Equations

Mathcad - Empirical Equations

(OP)
Hi,

For all engineers who use Mathcad:

For example:

If I were to define fc := 4000psi

How would Mathcad perform the following function for the elastic modulus?:

57000(fc)^0.5

I know Mathcad is smart in terms of performing unit conversions seamlessly, but what about equations where a specific unit is required to obtain a desired result? Is there a way to "hardset" the input unit? Also, is there a way to "hardset" the output unit for empirical equations where the output units don't necessarily equal the input units (such as the formula for the elastic modulus)? Or would I need to apply a unit to the constant portion so that the units equal?

Thanks

RE: Mathcad - Empirical Equations

Just multiply by the value 1 with whatever unit is needed to get the final units you need. For your case, I would multiply the equation by sqrt(1 psi), which would let MathCAD give you a result in psi.

RE: Mathcad - Empirical Equations

Just give units to 57000

RE: Mathcad - Empirical Equations

I tend to just multiply fc by psi. So it looks like 57000*(fc*psi)^0.5, does the same thing as the method mentioned by IRstuff.

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