The size and shape of the grating is what determines their hydraulic efficiency. Considerations when purchasing storm drain grates Hydraulic efficiencyĪ storm grate’s first job is to move surface water into the sewer system. When choosing the right grate, there are several issues to consider. Storm drain grates are responsible for creating safety to the street users above. At each water inlet, there is an opening in the hardscape to allow water in without causing a hazard. These eventually drain into rivers, lakes, or oceans. Sewer systems are a collection of built waterways that function like a river system, taking water from small capillaries and moving them into bigger channels. Softscape systems can increase rates of groundwater replenishment and offer a host of other benefits-but sewers are still a necessity in the concrete jungle. Modern bioswale practices are changing how water management is done for the better. Water management at the surface Several factors must be addressed when choosing the right grate.Ĭities and counties are managing more water than ever, as hardscape covers more surface area and flash flooding becomes more common.
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