U Drains and Box Culverts
Srishti Precast concrete U-Drains are designed in accordance to BS 8110: 1985. The sizes of U-Drain ranging from 600mm to 3650mm width and are of various heights. All U-Drains are standard length of 1m. SPC U-Drains are made from high strength concrete. The characteristic strength of concrete is 30-40 N/mm2 at 28 days. SPC U-Drains are supplied with or without Dry Weather Flow (DWF) and weepholes are provided for drainage of the retained soil.These weepholes may also be used as lifting holes.
Srishti U-Drain may be laid on prepared sand bedding, 73mm thick of lean concrete bed or in cases of bad grounds place a layer of hard core beneath the sane bed before laying the U-Drain. A spreader bean should alwyas be used when sliging the U-Drain to avoid crack in the legs (refer figure). SPC U-Drains are supplied with plain butt joint. It is recommended that cement mortar be used to fill the gap between U-Drain units.
Precast concrete box culvert
Concrete box culverts and aprons manufactured by County Materials are ideal for applications where circular and elliptical concrete pipe cannot provide adequate flow capacity. These precast concrete components also work well in place of short-span bridges and multi-barrel culverts and drains. Various end treatments are available in select markets.