ASHRAE duct fitting database version in Revit

[Anonymous]

Hi all

When we design duct and pipe fitting, we will need to use the fittings loss efficient to be ASHRAE or CIBSE. Once in a blue moon, ASHRAE will update their duct fitting loss efficient. Since Revit have ASHRAE in its system, what is the ASHRAE duct fitting database version Autodesk is supporting now? v6.0.0.5? 

[mariah.ferranti]

Hi @Anonymous,

Thank you for participating in the forums! I'm following up with our team to confirm what ASHRAE duct fitting database is in use, and will keep you updated as I get more information on this. 

[mariah.ferranti · Accepted solution]

Hello @Anonymous,

Thank you for your patients while we verify. I was able to find from our help documentation that Revit 2019 is integrated with the ASHRAE Duct Fitting Database version Version 5.00.00 (Revit 2019 Help: Part types).

[mariah.ferranti]

ello @Anonymous,

Thank you again for participating in the forums! I wanted to check and see if the information provided answered your question, or if you need more help. Please feel free to select 'Accept solution' if you are all set, or reply back if you need more help. 

[Anonymous]

Thank you so much for your reply!

Would your team will update the database to 6.0.0.5?

Afterall there were 66 fittings changed from 5.0.0.0

More information

https://www.ashrae.org/technical-resources/publication-errata-and-updates/ashrae-duct-fitting-databa...

[mariah.ferranti]

Hi @Anonymous,

I'm not quite sure what the time-line for getting this updated would be. I'm working on checking with our team to see what their thoughts are on this, and will keep you updated with the information I get!

[mariah.ferranti]

Hello @Anonymous,

Thank you for your patients while I check into this. I was able to talk to the team, and they are looking into updating. In the meantime, could you please post the request to update to ASHRAE Duct Fitting Database 6.0.0.5 as an idea in the ideas forum? 

[mariah.ferranti]

Hello @Anonymous,

I wanted to check in and see if you had any remaining questions or concerns, or if you were able to post within the Revit Ideas Forum . Don't hesitate to reply back if you need more help! 

[Anton_Welgemoed]

Hi Mariah, there is a lot of fittings that have issues with the Co-efficient calculation from the ASHRAE TABLE on the ducts and Pipe fittings. I have traced it back a couple of years now if you look at the forum.

Particularly the Tee's in both duct and pipe as well as the duct shoes. Is Autodesk planning to correct this as it is an MEP tool after all?

[Iev60047]

Hello @mariah.ferranti this is also an issue for me. I have a lot of issues with the co-efficient calculations from the ASHRAE table on the ducts and pipe fittings. Is there any plan to fix this, or is this a low priority issue? Unfortunately, these issues make the system pressure portion of the software next to useless, because I am having to do calculations by hand again.

@Anton_Welgemoed Did you find a post on the ideas forum that supports this issue?

[Anton_Welgemoed]

Nope, hurry up and wait?

[iainsavage]

This thread gives some background on how the coefficients are assigned but the method is far from ideal.

https://forums.autodesk.com/t5/revit-mep-forum/duct-fitting-amp-ashrae-table/td-p/2729827/page/2