You may define up to six different culverts using the HY8 Culvert Data dialog. For each culvert you will need to specify the upstream and downstream site information. Site information may be entered as a set of stations (this will define the length of the culvert) and elevations (culvert invert data), or as a set of stations, elevations, and slopes (embankment toe data).
The only culvert shapes currently available in the WMS interface are the circular and box shapes. HY8 allows you to define elliptical and arch culverts but in order to specify these shapes you will have to run the program outside of the WMS.
Culvert materials are defined by selecting the Materials button and selecting the desired material from the HY8 Culvert Material. The available materials from which you may choose will correspond to the shape of culvert specified. By selecting a material you will actually be specifying a Manning's n or roughness coefficient. The coefficient will be updated appropriately (and can be changed if you want/need to) in the Culvert Data dialog after specifying the material.
Culvert inlet specifications are defined using the HY8 Culvert Inlet dialog. The available inlet types are a function of the culvert shape and material. Some of the inlet types have hydraulic improvement data that may specified, and if an inlet depression exists it can also be defined.
Related Topics:
Culvert Calculator with HY8