We are designing a culvert extension across an existing roadway to which we are adding lanes. The channel is dry except during rain events, and several hundred cfs can be in the channel during larger storm events. What is the best way to control erosion during construction of the culvert...
Significant flow of groundwater is entering the trench from the side, along a long segment of the storm sewer pipes. The pipes then turn and run in the direction of flow. Geotech and contractor suggest placing rock in the trench with filter fabric above the rock. This seems like a common...