Storm Drainage, Cast-In-Place Non-Reinforced Concrete Pipe, Flood Plain Encroachments and Highways In National Flood Insurance Program Mapped Floodplains, Coordinating Highway Encroachments on Floodplains With FEMA 23 CFR 650 A - NS Sec. 650.115 (09/30/1992)

2021年7月18日 · Road Drainage. The system which is designed for road for proper collection, removal and disposal of surface as well as sub-surface water is called as road drainage. To maintain the stability and durability of the road, the road surface and its foundation should be kept as dry as possible.

Highway Administration (FHWA), the U.S. Army Corps of Engineers (USACE), the National Resource Conservation Service (NRCS), and the U.S. Geological Survey (USGS) are the predominant source of guides, manuals and other documents to aid in the design of highway drainage features.

Highway drainage consists of removing or controlling surface water and subsurface water away from the road surface and the subgrade supporting it. Part of the rain water flows on the ground or road surface, while the other part percolates into the ground and reaches the ground water table, raising its level.

2025年2月17日 · What is highway (Road) Drainage? The term drainage is defined as the interception and removal of water from, over, and under an area. Hence the highway drainage the process of the removal of excess water from the road surface and also from the road subgrade.

Highway Drainage may be defined as the process of interception and removal of water from over, under and vicinity of the road surface. Destruction of highways by water:

Surface drainage system is most important in Highway engineering. A pavement without proper drainage facilities will not serve for long time. The water or rainfall on road should be collected by side drains which carries the drain water to nearest stream or any water course.