LandXML Attribute Mappings
The following topic describes how various LandXML element attributes are mapped to their StormCAD counterparts.
LandXML Import
Structs
Structs are either imported as Transitions or Gravity Junctions depending on the following subelements it contains.
- Struct.Connection > Becomes a CrosSection
- Struct.RectStruct > Becomes a rectangular gravity junction whose shape parameters are based on:
- Struct.CircStruct > Becomes a circular gravity junction whose shape parameter is based on:
Pipes
All pipes are brought in as gravity conduits.
LandXML Export
Catchments
Ponds are ignored.
Gravity Junction (CatchBasins or Manholes)
- Circular > Struct.CircStruct
- Box > Struct.RectStruct
- Elevation (Invert) > Struct.elevSump
- Elevation (Rim) > Struct.elevRim
- Hydraulic Grade Line (In) > Struct.StructFlow.hglIn
- Hydraulic Grade Line (Out) > Struct.StructFlow.hglOut
CrossSection > Struct.Connection
- Elevation (Invert) > Struct.elevSump
- Elevation (Top) > Struct.elevRim
- Hydraulic Grade Line > Struct.StructFlow.hglIn
- Hydraulic Grade Line > Struct.StructFlow.hglOut
PondOutletStructure > Struct.Connection
- Elevation (Invert) > Struct.elevSump
- Elevation (Top) > Struct.elevRim
- Hydraulic Grade Line > Struct.StructFlow.hglIn
- Hydraulic Grade Line > Struct.StructFlow.hglOut
Outfall > Struct.OutletStruct
- Elevation (Rim) > Struct.elevRim
- Elevation (Invert) > Struct.elevSump
- Hydraulic Grade Line > Struct.StructFlow.hglIn
- Hydraulic Grade Line > Struct.StructFlow.hglOut
Wet Well > Struct.Connection
- Elevation (Minimum) > Struct.elevSump
- Elevation (Maximum) > Struct.elevRim
- Hydraulic Grade Line > Struct.StructFlow.hglIn
- Hydraulic Grade Line > Struct.StructFlow.hglOut
Tap > Struct.Connection
Conduit
- Start ID > Pipe.refEnd
- Stop ID > Pipe.refStart
- Length (Unified) > Pipe.length
- Slope > Pipe.slope
- Circular > Pipe.CircPipe
- Ellipse > Pipe.ElliPipe
- Rectangular > Pipe.RectPipe
- Trapezoidal > Pipe.Channel
- Flow > Pipe.PipeFlow.FlowIn
- Hydraulic Grade Line (In) > Pipe.PipeFlow.hglUp
- Hydraulic Grade Line (Out) > Pipe.PipeFlow.hglOut
Channels are exported as trapezoidal conduits
Lateral links are exported as conduits
Gutters are ignored.
Pressure Pipes are not supported