Creating Drop Structures in StormCAD
Creating Drop Structures in StormCAD
(OP)
I'm having a problem with StomCAD V81 (SS 4) with creating a drop structure.
The calculated pipe slope is going from bottom of box > bottom of box, regardless of the inverts I input.
I have the boxes and conduits set to "false" for design.
Default Design Constraints are set to "allow drop structure, minimum drop depth of 0 ft"
Example:
Upstream INL-1 invert out = 202.50
Conduit L = 64 ft
Downstream INL-2 INV IN = 201.50
INV OUT = 196.63
When the calcs are run, the capacity of the 42" pipe joining the two inlets are based on a slope of 0.092 ft/ft instead of 0.0156 ft/ft
There must be a global setting somewhere that I am missing, as this is happening everywhere throughout this file.
Thanks in advance.
The calculated pipe slope is going from bottom of box > bottom of box, regardless of the inverts I input.
I have the boxes and conduits set to "false" for design.
Default Design Constraints are set to "allow drop structure, minimum drop depth of 0 ft"
Example:
Upstream INL-1 invert out = 202.50
Conduit L = 64 ft
Downstream INL-2 INV IN = 201.50
INV OUT = 196.63
When the calcs are run, the capacity of the 42" pipe joining the two inlets are based on a slope of 0.092 ft/ft instead of 0.0156 ft/ft
There must be a global setting somewhere that I am missing, as this is happening everywhere throughout this file.
Thanks in advance.





RE: Creating Drop Structures in StormCAD
is your "out" invert really a foot higher than the "in"?
RE: Creating Drop Structures in StormCAD
To bring this thread full circle in case anyone searches this topic, this is how we solved this:
Close the file, have someone on another computer open and save it, reopen on the original computer.
Your guess is as good as mine, but it worked.