Chamfer corners aren't perfectly round

[Mehdi.Kardehi]

This formula is good by itself as a dimension calculator 

1.17 * sqrt(Designed Air Flow / 1.75 m/s)

but when I do this 

round(1.17 * sqrt(Designed Air Flow / 1.75 m/s))

I get inconsistent units error!!

any thoughts?

Regards,

M

[CoreyDaun · Accepted solution]

The ROUND functions only work with unitless Number values, so you cannot directly round Air Velocity, Angle, or Length Parameters to name a few. The trick here is to strip the units before the ROUND function and then reapply the units at the end of the formula. Silly, I know...

= round((1.17 Hz * sqrt(Designed Air Flow / 1.75 m/s)) / 1 m/s) * 1 m/s

A simpler example of this would be:

= round(Length / 2)  (yields an error)

becomes

= round((Length / 2) / 1 mm) * 1 mm

(or you could just add the units to the "/2")

= round(Length / 2 mm) * 1 mm

[Mehdi.Kardehi]

Thanks mate...I like the unit consitency check in Revit but in this case...it's just silly as you said;)