What is storm drain inlet protection?
What is storm drain inlet protection?
Storm drain inlet protection consists of a sediment filter or an impounding area in, around or upstream of a storm drain, drop inlet, or curb inlet. Storm drain inlet protection measures temporarily pond runoff before it enters the storm drain, allowing sediment to settle.
How far beyond each side of the storm drain inlet must the protection extend?
18 inches
Wire mesh with ½ inch openings should be used. Clean coarse aggregate should be placed over the entire inlet structure, to a total depth of at least 12 inches. The aggregate should extend beyond the inlet structure at least 18 inches on all sides. Coarse aggregate should be TDOT #3, #357, or #5.
What does inlet protection mean?
DEFINITION & PURPOSE. A temporary sediment control barrier placed around an inlet that minimizes sediment from entering the storm drain. CONDITIONS FOR EFFECTIVE USE. All functional inlets that drain disturbed areas should have inlet protection.
What is an inlet stormwater?
A device that admits surface waters to the stormwater drainage system. Also see catch basin and curb inlet.
What is Inlet drainage?
DESCRIPTION. 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.
What is inlet protection construction?
Inlet protection is a temporary measure used where the drainage area to the inlet or inlets of a storm drain system is disturbed and it is not possible to divert sediment-laden water away from the system.
What is the purpose of a stabilized construction entrance?
Description and Purpose A stabilized construction access is defined by a point of entrance/exit to a construction site that is stabilized to reduce the tracking of mud and dirt onto public roads by construction vehicles.
What is an inlet in construction?
A stormwater inlet refers to manholes, catch basins, curb inlets and other drop-type structures constructed to direct stormwater into storm sewers or other underground drainage systems.
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 is the maximum height of a block and gravel inlet?
24-inches
Place concrete blocks around the inlet with openings facing outward. Stack blocks to minimum height of 12-inches and maximum height of 24-inches. Place wire mesh around outside of blocks. Place gravel (3/4″ to 3″) around blocks.
How do you calculate inlet capacity?
Inlet Spacing
- Spread: 6 + 2 = 8 ft. Depth at curb = 8 x .
- Determine capacity and spacing of the first inlet on the slope. Pavement area which will produce equivalent discharge from the equation: Q = CIA.
- Using Neenah inlet R-3246-A, Type C, K = 26.
- Length to next inlet: Q / ICW = (1.23 x 43560) / (4 x 0.9 x 22) = 676 ft.
What is an inlet of the sea?
1a : a bay or recess in the shore of a sea, lake, or river also : creek. b : a narrow water passage between peninsulas or through a barrier island leading to a bay or lagoon. 2 : a way of entering especially : an opening for intake.
