"W" value doesn't work in material takeoff in Revit 2017

[Anonymous]

Hi everyone,

I try to do the total weight for steel in "Structural Framing material takeoff schedule" which would use formula "Length * W/1' ".  The problem is "W" value doesn't show up (see screen shot below). Any one knows why?   Thank you!

[múinteoir]

See below link

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/sfdcarticles/sfdcarticles/S...

[Karol_Piroska]

just be very careful when using W from OOTB families - double check the values with steel tables. Not all have same units and I found some time ago (from 2016) that some were wrong. I had to change all steel families to make sure they are correct and compatible.

[Anonymous]

Thanks for your reply, but the link you mentioned only works for old beam families (before Revit change the beam family name and all the parameters).  Still searching ...

[Anonymous · Accepted solution]

OK, I found the solution.  Just forget about "W"!!  Since from Revit 2017, beam family parameters has changed, I just need to use different formula to calculate weight:

Weight = volume / 1 * 490