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Water Drainage for Decorative Concrete Applications
On a run-of-the-mill pour, installing drainage systems is no big deal. But on a decorative concrete project, a drainage system can ruin the effect the designer is trying to create.
by John Strieder
and catch basin or area drains that drain the water from the middle of a slab. Each can be a bear for decorative contractors. Option one includes installing a long, unsightly grate. Option two requires contractors to trowel multiple four-way grades into what probably needs to be a relatively flat surface.
Drainage systems can blend into decorative concrete applications. But making them so requires some forethought.
Trench and channel drains are usually used between a sloping driveway and a garage entrance, along a straight retaining wall, or to control storm runoff and chemical spills. Channel drains usually have a flat bottom with no built-in slope or pitch. Trench drains have slope or pitch built in, plus a rounded bottom to prevent debris from accumulating.
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