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Slotted Drain™

 

Aesthetically Pleasing Inlet for the Removal of Surface Water

Slotted Drain pipe removes sheet flow from streets, highways, and parking lots without multiple grades or water channeling devices. The result is an aesthetically pleasing inlet that is safer and easier to install and maintain.

Slotted Drain Overview

Slotted Drain is a unique pipe which removes sheet flow without multiple grades or water channeling devices.

The pipe is cut along a longitudinal axis, and a trapezoidal or straight-sided grate with reinforcing spacer plates is welded to form a 1 3/4 -inch-wide slot opening. The slot collects runoff and channels it to the pipe below from which it flows to the appropriate outlet.

Slotted Drain is fabricated from galvanized steel for excellent durability or from Aluminized Steel Type 2 (ALT2) when more corrosion resistance is required.

The result is a practical, aesthetically pleasing inlet for the removal of surface water on streets, highways, and parking lots. Designers and engineers installing walkways and promenades around sports stadiums, civic centers, shopping malls, parks and other pedestrian-traveled surfaces have used Slotted Drain as an integral part of the landscape architecture.

Unlike typical parking lots that require grades to be sloped in four directions for each storm collection grate, a parking lot with slotted drain requires only one transverse and one longitudinal slope for the entire drainage area. That translates to a lower-cost installation for the contractor and owner; and less stake-out for the engineer. Because of Slotted Drain’s efficiency in removing surface water, fewer collectors and fewer laterals under the roadway are needed.

On roadways and highways, replacing curbs and drain basins with continuous lengths of Slotted Drain opens up an obstruction-free and single grade roadside that greatly enhances the effectiveness of the shoulder to improve safety.

Slotted Drain Features and Benefits

Features Benefits

Fabricated from Contech Corrugated Steel Pipe

Structurally sound, supports H-20 loading

Intercepts up to 50% more runoff than most standard 2’ x 2’ grate inlets

Improved drainage efficiency

Only one transverse and one longitudinal slope

Fewer collectors and fewer laterals, lower cost installation

Hazardous dips and ponding grades are eliminated.

Improved safety

Straight-sided grate

Fewer debris problems, lower cost maintenance

Slotted Drain Pipe Coatings

  • Galvanized Steel - Pipe made from steel coated with zinc to extend service life. The most widely used and most economical metallic coating for corrugated steel pipe
  • Aluminized Steel Type 2 (ALT2) - Pipe made from steel that has been hot-dipped in commercially pure aluminum; offers 75 years or more of maintenance free service life

Slotted Drain Pipe Properties

  • 12” – 36” diameters available in 14 and 16 gauge
  • 30” and 36” diameter available in 12 gauge

Slotted Drain Pipe Accessories

Slotted Drain Applications

  • Curb inlets
  • Inlet system across driveway cuts
  • Shoulder drains along median barriers
  • Pedestrian thoroughfares, malls and bicycle paths
  • Replacements for curbs and berms where those obstacles are undesirable for safety reasons
  • Ground-level floors with drainage requirements
  • Parking lots or other continuous paved surfaces
  • Sidelines of playing fields in stadiums
  • Airport aprons, taxiways, hangars, and deicing areas
  • Railroad intermodal facilities with heavy wheel loads

To view documents simply click on (+) before the folder to view contents, then double click document file to open. Please note, not all folders contain documents.

[Slotted Drain Documents]


Slotted Drain for Drainage

Slotted Drain for DrainageSlotted Drain is a continuous opening inlet that efficiently removes surface water on streets and highways. The grate on a standard 20-foot length of Slotted Drain will intercept up to 50% more runoff than most standard 2’ x 2’ grate inlets. In parking lots, Slotted Drain removes sheet flow without complex multiple grades or water channeling devices like asphalt dikes, berms and curbs.


Slotted Drain Case Studies
Westpark Tollway
Westpark TollwayHouston, Texas
Lennar Homes
Lennar Homes Henderson, Nevada
Greenview Drive Widening
Greenview Drive WideningLynchburg, Virginia
FedEx - Memphis Airport
FedEx - Memphis AirportMemphis, Tennessee

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