The culvert geometry defines the geometrical shape of the active flow area of the culvert. The cross sectional geometry of a culvert can be specified as:
· Rectangular
The width and height specify the geometry.
· Circular
The geometry is specified by the diameter.
· Irregular Level-Width Table
The geometry is specified using a level/width table. The Level/Width table defines the Culvert shape as a set of corresponding levels and flow widths. Values in the level column must be increasing.
Figure 6.9 Definition sketch for irregular culvert
