Hydratec Inc.

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AutoCAD Based 3D Modeling (Ribbon/Toolbar/Location)

Description:

Using negative floor elevations and drop windows with specified lengths, drops give a warning that takeout was greater than it's length, when going to 3D.

Solutions:

Cause:

Program has a problem calculating drop lengths when going to 3D when negative floor elevations and drop windows with specified lengths are used.
Solution:

This is a known problem. 

The workaround is to set the floor elevation at 0 (zero) to calculate the drops correctly.

If the building needs to be coordinated then move the pipe model in the negative Z direction after it is created.
Updated: July 20, 2026, 2:26 p.m. Created: July 20, 2026, 2:26 p.m.