SWMM - Curves - Shape Curves

It describes the variation in the values of the Width/(Total Height) ratio as a function of the Depth/(Total Height) ratio in Non-standard sections of SWMM that are regular

It is assigned to a SWMM conduit, when it has a typical section like Shape Curve assigned by Constructor

A shape curve has the following properties:

• Identification
  • Description - Use a friendly description when the item name is not enough
  • Name - name of the item
    Avoid names that are too long, or that contain the following characters: '*', '>', '<', '/', '\', '"', ':', ';', '|', '=', '`', '#', ',', '?'
  • Priority - Information about the current state of the item. It might be:
    • Neutral: no problem
    • Critical: Some issue that prevents the item from being calculated or used

The data is populated in the table and plotted on the graph for better visualization:

The Depth/(Total Height) ratios must be in ascending order, not repeat, cannot be negative, must start at 0 and end at 1. The Width/(Total Height) must always be positive, otherwise the Priority property will be Critical

Note: The section will be symmetrical, so fill in the Width/(Total Height) ratio values with positive numbers and consider the relationship Depth/(Total Height) from bottom to top, as in the graph