How do I get the maximum of two values ​​from different units?

[Yabo]

Hi everybody

Im trying to determinate the maximun of  two values with different units, but Mathcad does not allow it.

t:=2m

h:=5kg

Max(t,h)= ? 

Help me pls 🙂

[terryhendicott]

Hi

Max(t/m,h/kg)

Cheers

Terry

[LucMeekes]

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@Yabo wrote:

but Mathcad does not allow it.

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And for good reasons! Essentially you're comparing apples to oranges, or pears, or berries... In general it's nonsensical, certainly from a physical standpoint.

Bear in mind that if you express t in mm, and h in kg, then 't' will provide the larger value.

Success!
Luc

[Yabo]

I need the maximun of these two values.

These formulas represent the maximun reinforcement bar.

[LucMeekes]

That is only possible if 

 f ' c

is unitless.

Otherwise, as explained, it's nonsense.

Where is the worksheet...?

Success!
Luc

[terryhendicott]

Hi,

These are empirical equations the result of both is mm^2.  Using empirical equations you must be careful to divide the inputs f'c, fy, b, d by the right units as used by the creator of the empirical equations..

Cheers

Terry

[terryhendicott · Accepted solution]

Hi,

Here is a worksheet.

[Yabo]

Thanks bro! Have nice day.