What is the purpose of inlet protection?
The basic purpose of inlet protection is to install a barrier around an inlet or install check dams along the gutter that filters sediment-laden stormwater runoff that may have generated from a construction site or other activity that disturbs soils.
What are the three types of inlets?
There are three major types of inlets: grate, curb opening and combination.
What are drain inlets?
Drain inlets collect water from roads and parking lots and convey it to an underground storm drain system. Drain inlets incorporated into a curb and gutter systems are called curb inlets.
How do you calculate inlet capacity?
To calculate inlet capacity, multiply the orifice flow coefficient by the area, then multiply the result by the square root of the product of 2 times g times the head.
What is a combination inlet?
COMBINATION INLET Combination inlets can capture up to 18% more flow than a stand-alone grate inlet, due to their ability to remove debris from the grate. Combination inlets require the same input data as both Curb and Grate Inlets. Combination inlets are assumed to have horizontal throat openings, no inclined throat.
What is a drainage outlet?
Drain outlet means the lowest end of the main or secondary drain to which a sewer connection is made. “ Drainage system” means all piping within or attached to the structure that conveys sewage or other liquid waste to. Sample 1.
What is a yard Inlet?
Yard inlets are similar to catch basins but are much smaller. Metal and plastic yard inlets can be purchased at a local hardware store. Trench drains are used to capture stormwater flowing over a larger area like a driveway. Trench drains convey rainwater to the City’s storm drain system.
What is inlet protection for stormwater drainage?
Inlet protection devices may be applied to any curb inlet, drop inlet, manhole, catch basin, or other entry point to the stormwater drainage system that might receive inflows with high sediment levels. Inlet protection is critical because it often is the last treatment measure before stormwater enters receiving waters.
How do you control sediment in a stormwater drainage system?
Caution: To the extent feasible, erosion prevention practices such as stabilization are preferred to sediment control practices. Inlet protection devices may be applied to any curb inlet, drop inlet, manhole, catch basin, or other entry point to the stormwater drainage system that might receive inflows with high sediment levels.
How to control stormwater runoff?
The primary method to control stormwater runoff is the use of best management practices (BMPs). Stormwater BMPs are devices, practices, or methods that are used to manage stormwater runoff by controlling peak runoff rate, improving water quality, and managing runoff volume.
What are the three components of stormwater management?
Massachusetts Stormwater Handbook identifies three components of stormwater management including (1) site planning, (2) source controls, pollution prevention, and construction period erosion and sediment controls, and (3) design, construct, and maintenance of structural best management practices.