Surface water, drainage

Surface water drainage systems can be composed of granular soils, geonets, or geocomposites, but the majority of drainage systems use granular soil. This is particularly true in frost regions where it is necessary to have 3-6 ft of soil above the FML to satisfy the requirements for frost... 

Moller, P., Paces, T., Dulski, P., Morteani, G. 2002. Anthropogenic Gd in Surface Water, Drainage System, and the Water Supply of the City of Prague, Czech Republic. Environmental Science Technology, 36, 2387-2394. 

High density PE (HDPE) is normally used for high-pressure pipes up to 20 bar for water and up to 7 bar for gas. Low density PE is used for lower pressure applications mainly in agriculture. Examples of applications are potable water up to 20 bar, gas up to 7 bar, surface water drainage systems, storm water drainage, cable ducting. 

All loading and discharge points should be designated, marked and isolated from the surface water drainage system. 

WATER Rain water Surface water Drainage water WATER Snow... 

Surface water drainage system—identify cracks, clean clogged drains, and storm water basin to prevent entry into the covered site. 

The unevenness and mega-texture affect the dynamics of the vehicle, the driving quality, the dynamic loading, the surface water drainage and the driving safety. 

Surface features must direct surface water drainage away from disposal units at velocities and gradients that will not result in erosion that will require ongoing active maintenance in the future. 

The main road safety risks related to surface water drainage were ... 

A tank that measures 4 m long, 3 m wide and 2 m deep is to be buried in a green field site as part of a surface water drainage system. 

The Water Industry Act 1991 controls, among other things, the disposal of waste water and discharges into the surface water drainage. 

Gas transmission beneath liners and surface water drainage in and above lined final cover sterns... 

Continuing with the theme of sustainable development I now want to consider the disposal of surface water drainage. 

---