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It is fundamental to our ability to use Revit as a design tool to be able to do a basic pressure loss calculation. Please devote some resources to fixing this.
Note that while there is no pressure drop value listed in the properties palette for a tap, the value is computed and accounted for... you can see this in the Pressure Loss Report. See image attached below. The reason the value isn't in the properties palette is because there are two separate losses associated w/ the tap, and the properties palette doesn't permit showing the details of two separate values associated with the tap in a way that would make it clear which value is for which path (same is true for Tee fittings).
The image below shows that the tap (ID 1340996) is on section 4, 5, and 7.
The branch, section 5, has a loss as shown based on the flow rate through that branch.
The main section 7 shows the loss along the main based on the flow rate downstream of the tap.
The main section 4 shows 0 loss (you can intuit this because a loss through section 4 would imply that value applying to both downstream sections.. which would not be expected).
This method is consistent with how Tees report.
The focus of the improvement in 2017 was to overcome barriers due to 'correctness'... there still is room for improvement related to usability.. there are other ideas on here related to making it easier to interpret/navigate the pressure loss data.
Thanks for your reply that was very helpful. I did believe this had been fixed & was somewhat surprised to get the query from our team. Basically you're saying that straight through flow reports as zero, and branch flow reports a loss. Which is perfectly reasonable when you understand it.
Hi @Anonymous - to clarify, in concept, there are three connectors on a tap just like there are on a tee.. .this is why on the pressure loss report you see three references to the same tap element ID (refer to my prior post). Referring to the image below, with the arrows below representing the flow direction, and 0 indicating no loss for that connection, there is a loss along the main as well as the branch for a tap, just as there would be for a tee.
