This command places a structure on a flow polyline of the watershed
schematic for
TR-20 Hydrograph Development. The program prompts for elevation,
discharge and storage data for
the structure which is equivalent to the TR-20 STRUCT table data. At
the bottom left of the dialog,
the Water Elevation at T=0 is the water-surface elevation at the
structure at the beginning of the
storm. A triangle structure symbol that contains the structure data is
drawn on the flow polyline. The
File button can be used to read the stage-discharge in
.STG files and the stage-storage in .CAP files. The storage or
discharge in the file is added to the table. Stage-storage files can be
created
with the Bench Pond Design, Valley Pond Design and Calculate
Stage-Storage commands.
Stage-discharge files can be created with the Drop Spillway, Design
Channel and Design Culvert routines. The Stage-Discharge Curve button
shows a graph of stage-discharge for the current entries. The TR-20
processing engine limits the number of stage-storage-discharge entries
to twenty. Also the initial discharge must be zero due to the TR-20
engine.
Symbol size <4.0>: press Enter
Pick location on flow polyline for structure:
pick a point on a polyline
Structure Data Dialog
Pick location on flow polyline for structure:
press Enter
Pulldown Menu Location: Watershed
Keyboard Command: trstruct
Prerequisite: flow polylines
File Names: \lsp\hydro1.lsp,
\lsp\hydro.dcl, \lsp\poly3d.arx