Shape Curve Data Fields (SWMM)

A shape curve in a SWMM network is used to define how the width of a cross section varies with height for a conduit with a custom type of shape. These are both normalised with respect to full depth.

Information relating to a shape curve can be viewed and edited on the Shape Curve Grid Window of the Links Grids or on the Shape Curve Property Sheet.

Most data can be edited on the grid, but some fields cannot be displayed in the grid format.

To view and edit all shape curve data, use the Property Sheet.

The table below describes all the data which can be used to define a shape curve. For details of results fields for links, see the Link Results Data Fields (SWMM) topic.

Shape Curve Data

Database Table Name: sw_curve_shape

Field Name	Help Text	Database Field	Data Type	Size	Units	Precision	Default	Error Lower Limit	Error Upper Limit	Warning Lower Limit	Warning Upper Limit
Curve ID	The unique name for this shape curve, up to 254 letters, numbers and underscore characters. Upper and lower case letters are treated as being the same. This name cannot be used by any other curve in the same SWMM network.	id	Text	254		0
Geometry	This field contains a series of records defining the data for this curve. These are entered on the Shape Curve Editor which is displayed by clicking on the button. Database Table Name: sw_curve_shape_data Show Columns Database Names Size, Type and Units Defaults and Error Limits Field Name Help Text Database Field Data Type Size Units Precision Default Error Lower Limit Error Upper Limit Warning Lower Limit Warning Upper Limit Depth/full depth The depth of the cross-section. normalized_depth Double   Y 3   0       Width/full depth The corresponding width of the cross section at this Depth/full depth. normalized_width Double   Q 3   0       ICM normalises the specified depth and width values with respect to full depth.	data	Structure