The Grate Pyramid is a reusable inlet protection device that forms a sturdy barricade over most drop inlets. The high-flow filter skirt would prevent sediment and debris from entering the drain while still allowing water to pass through. The built-in overflow would prevent ponding during major wet-weather events that might take place during the construction phase of the widening and rehabilitation project. The easy installation of the Grate Pyramid is a cost-effective option over the typical wood frame and fabric units, and the pyramid can be reused in future projects.
