The stormwater sewer piping is placed at a downward-sloping gradient to encourage water to flow through the piping this is also known as “gravity-flow.” The stormwater eventually flows into a stream, river, ocean, or type of public estuary. This water continues to drain into a sewer pipe that is connected to the curb inlet box structure. During a rain event, stormwater drains from the street paved area into the throat opening of the curb inlet. Often, the curb inlet structure is used a junction point when an incoming drainage piping is connected. : curb inlet protection type 1 & 2: erosion prevention and sediment control: inlet protection: ec-str-39a. INLET PROTECTION TYPE D CONSTRUCTION ENTRANCE 1.08 1.09 1.10 1.11 SILT FENCE EROSION MAT TYPICAL INSTALLATIONS OF EROSION BALES INLET PROTECTION, TYPE C CLEAR STONE BERM FOR EROSION CONTROL STREET CONSTRUCTION ENTRANCE BERM SILT SOCK STREET CONSTRUCTION STONE BERM INLET PROTECTION TYPE D HYBRID SERIES 2 - EARTHWORK 2.01 2.02 2.03 2. Storm sewer pipe is connected to the inlet structure to provide for drainage out of the structure. catch basin protection: erosion prevention and sediment control: inlet protection: ec-str-39. Internal access to the inlet structure is provided by an iron manhole cover. As the name implies, the throat opening is placed along the street curb perimeter. The curb inlet consists of a first-stage belowground box structure with a second stage horizontal throat opening that is flush with the paved surface. Anything below that level that extends beyond the grate frame opening into the open inlet space (concrete ledges, bricks, etc.) is a protrusion that is listed. When designing or building new streets and parking areas, a curb inlet is used to assist in the stormwater drainage of the paved surface area.
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