Hydratec Inc.

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AutoCAD Based Calculations (Ribbon/Toolbar/Location)

Button: Start Autocalcs

Description:

Step 5a.3 "Attaching Elevation of ~ to Node ~~~~

Step 5a.3 "Calculating"

"The specified remote node does not have a k-factor. Please fix your input."

"Calculation failed for unknown reason"

 

Solutions:

Cause:

1. User entered a non-number value for the k-factor in the sprinkler setup definition window



2. User is calculating a system which has a city & pump for the water supply. The Output Curve of the pump was not generated

 

3. Riser nipple has bad input (IE. -19-9 length)

 

4. Unknown

 
Solution:

1. Check the sprinkler definition and verify the value for k-factor is a number (ie. 25.2 or 8.0), not "k25.2" or "k8"


2. Erase the three water supply node points (City, PO & PI) and the fire hydrant and pump blocks. Re-insert the water supply, when in the Pump Curve window, after entering the pump specs, click the "Make NFPA Curve" button. GAB 9/11/14

 

3. Noticed due to fact that pipe did not show change in elevation at riser nipple when viewing in 3D. Erase riser nipple and reinsert.

 

4. Could be a problem in the drawing itself.  Test a simple calculation by drawing a sprinkler head, a branchline, and a main then enclose it in a boundary.  Then run a calculation to see if it works.  If not, use CLASSICINSERT to insert the drawing into a new template then try again
Updated: Nov. 3, 2025, 1:15 p.m. Created: March 1, 2019, midnight