Trench drains are also known as “channel drains” or “linear drains.” These terms describe a narrow, long trough capped with grating designed to manage surface water runoff.
For the drain to be effective, the trench grate must be flush to the surface around it. Water should flow easily over the surface, falling through slats or holes into a sloping channel below. The drain works likes an embedded gutter: usually long and narrow, the dimensions are chosen to accommodate the maximum expected water flow.
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