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Concrete will need to be poured to surround the trench drain so that the load can be transferred from the channel and grate to the surrounding areas. Pre-cast trench drains generally come in 4-inch (100 mm) widths but can range anywhere from a 1.75-inch (44 mm) slot to 2-inch (51 mm) wide channels with grates, and up to any size imaginable ...
The grates increase the risk of personal injury and result in lost time. The slot drain concept was first introduced to solve such problems. By eliminating the needs for grates, there is no concern about breaking. The concrete sustains most of the weight and the slot opening is usually only 0.5 to 1.5 inches (1 to 4 cm). Capacity of evacuating ...
Point drainage, which intercepts water at gullies (points). Gullies connect to drainage pipes beneath the ground surface, so deep excavation is required to facilitate this system. Support for deep trenches is required in the shape of planking, strutting or shoring. Channel drainage, which intercepts water along the entire run of the channel.
A diagram of a traditional French drain. A French drain [1] (also known by other names including trench drain, blind drain, [1] rubble drain, [1] and rock drain [1]) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.
The drainage system includes two lines of 6-inch (150 mm) drainage tiles and 12 intakes. Each intake is a conical-shaped cast iron grate that covers a subsurface concrete cylinder. The four culverts include one concrete driveway culvert and three concrete box culverts, all of different sizes.
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