To modify the culvert solution

Modify the culvert solution settings for number of barrels, barrel shape, material, Manning's n values, inlet configuration, and tailwater conditions.

Note: To Modify a culvert's placement, length or size use gizmos and grips in the model.

1. Click the culvert to display its asset card.
2. Right-click the culvert and select Edit or select from the utility bar to enter Edit mode.
3. Click an editable field in the Analysis and Solution sections to change a value.

Design Flow: The Flow value is for manually placed culverts where there is no watershed nearby. If the culvert is within a watershed, its peak flow value is used. Default values of either 7 cfs or 0.25 cms are used to size a culvert if no flow information is available. Attributes: Adjust Culvert Length and Invert Elevations using gizmos and grips in the model. Barrel Skew Angle reports the actual angle. In most cases the angle should not exceed 45%. Solution: Enter Edit mode to edit Solution values. Click a field to display options and edit values. Barrel: 1 or 2 (or more) Shape: Box or Circular Size: (initially determined by Flow data; change size using in-canvas grip) Material: Concrete or Metal Manning's n : 0.012 for concrete; 0.024 for corrugated metal Inlet Configuration: square or rectangular. Inlet Configurations correspond to a selection of Federal Highway Administration (FHWA) HDS-5 Table A Inlet Configurations. Analysis: Tailwater Conditions: The default Conditions use the FHWA recommended (dc+D)/2 value, or the average of the culverts critical depth and the diameter or rise of the culvert. Click the default condition to choose from other options: