pressure drop with ASHRAE tables

[maurizio_moscoloni]

Hello, sorry for my english but I'm italian.

I have a problem with the calculation of pressure drop in fittings. 

The loss coefficient is equal to zero using the ASHRAE tables.

How to obtain pressure loss in fittings?

Thanks!

[cadtamas]

I have the same problem, but as i know the developer's of Revit, they cannot answer your question.
Its' really disturbing and boring, that i have to check the forums all the time, if have a problem. It needs more time, that i can spend on work.

[marco.defina]

Hello, someone solve the problem?

I'm italian too, if you will send me a private message...