Hec 22 type inlets can be very confusing and hopefully this article will help to simplify.
Gutter inlet type s.
Gutter inlet type s.
Curb and gutter barrier inlet.
All dimensions are listed in inches unless otherwise noted.
Neenah foundry offers a variety of cast iron gutter inlets.
Curb ramps types 2 and 3.
Install a french drain one of the top yard drainage solutions to divert water away from problem areas.
Or m g acceleration due to gravity 32 2 ft s 2 or 9 81 m s 2 y depth of water in the curb and gutter cross section ft.
The depth or elevation computed at the inlet face is simply translated upstream to the gutter.
The street s longitudinal slope on which the grate inlet is placed must be between 0 1 and 10 the approach stormwater flood height in the grate inlet is greater than 3 cm.
Gutter inlet type v.
Fdot type s gutter inlet concrete specs 4 000 psi 28 days type ii cement reinf.
Ditch bottom inlets types c d e and h.
Water pooling in a yard can kill grass attract mosquitoes and create mud patches.
Among other data each inlet has a gutter cross section that consists of a gutter width and slope and compound gutter cross slopes sw and sx and an optional local depression a.
8d2 concrete surface drains flume type at structures a.
Or m this depth will vary slightly with the inlet detail used l length of curb opening inlet ft.
Ditch bottom inlet type b.
Concrete curb ties and curb gutter applications.
Ditch bottom inlets types f.
8d5 curb ramps sheet a.
Select from the list below to find our full line of gutter inlets that are a perfect fit for your needs.
For inlets located in sags these two will be the same and are calculated from the specific inlet type s methodology described here.
Bentley microstation drawings are provided as zipped dgn files for designers who decide to modify standard plans to suit project specific requirements data and details found outside of the printed border region is for fdot internal use only and should not be used.
8d4 concrete surface drains and asphaltic flumes.
Concrete surface drains drop inlet type at structures a b.
Ditch bottom inlet type a.
For inlets on grade the gutter spread refers to the spread just upstream of the inlet and is based.