Hydratec Inc.

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Revit Based HydraCALC (Ribbon/Toolbar/Location)

Button: Hydraulic Calculations Function: Continue Error Type: 1a.1

Description:

Step 1a.1 - Error box - missing Pipe Type pointing to Ref 1 & Ref 2

can also be Step 1a.4

Solutions:

Cause:

1. Pipe diameter does not have an internal diameter for that size pipe being used or bad fitting sizes.

This has been know to happen when using 1/4" pipe.

The Calculation includes pipes less than 1/2" and greater than 24".

1A. same as above but in metric pipe sizes are not nominal.
Solution:

1. Use "Pipe Type and Size Schedule" to find any pipe with diameters less than 1/2" or greater than 24".

Change the diameter of the pipe,or put a System Divider on that pipe(s).

2. Ref 1. and Ref 2. refer to the fittings at either end of the pipe that is "Missing Pipe Type". 

For each pair of Ref number use. Revit -> Manage Tab -> Inquiry ->Select By I.D., enter a reference I.D. and Revit will zoom to the fitting. Change the diameter of pipe connected to the fitting, or put a System Divider on that pipe.

If you'd like a further explanation: Here is a 10 minute video detailing the process on how to resolve this error

https://hydratec.sharefile.com/d-s58953cf14a944fddaf27836cecfa9869

1A. Metric sizes are literal in the model, not nominal - for example 1" in imperial is equal to a nominal metric dimension of 25 mm, but literally converted the size is 25.4 mm.  All metric diameters must be the nominal size (25, 32, 40, 50, etc.) and not the literal size.  Best bet to fix, bring in Pipe Types from the toolbox and convert existing literal diameter pipes to the nominal diameters by switching to HCAD pipe types. Note: one must pay close attention to conversions because the literal diameters round up i.e. 25.4 becomes 32. 

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Updated: Feb. 17, 2025, 5:04 p.m. Created: May 4, 2017, midnight