Corrugated drainage pipe and fittings are utilized to move excess water underground on a developed site. The most common homeowner application is to use corrugated pipe and fittings to neatly extend a roof downspout out away from the house. The roof water is moved via a solid corrugated pipe away from the house to decrease the likely hood of water seeping into the basement.

When a house basement is installed a hole is dug to construct the basement walls. After the basement walls are done the soil is pushed back against the outside of the basement or backfilled. It is the backfilled area around the basement that is susceptible to settling and is typically more porous than undisturbed ground. The roof water should end up outside this perimeter. Usually 10 feet is sufficient unless the surface grade slopes back toward the house.

Normally 4” pipe is used on most residential jobs. The 6” pipe is used on commercial applications or on residential sites, which require a substantial collective water routing system.

4" Corrugated Pipe & Fittings

The corrugated pipe comes in 100-foot rolls or it can be cut to length as needed. There are 3 types to choose from.

4" corrugated solid pipe. This pipe is most commonly used to route water to a new location.

4 inch corrugated with slots.

This corrugated pipe has narrow slots in it to allow water to seep in or seep out as needed. It is typically buried surrounded by stone and used to disperse extra water. It is also used to collect undesirable water in saturated areas and route it to another lower area.

 

4 inch corrugated with slots and a sock.

This corrugated pipe uses the same pipe as the slotted but also includes a fiber filter sock around the pipe. The use of the slotted pipe with the filter or sock is a good way to keep the pipe from getting clogged over time.

 

4" Fittings

Coupling

Internal couplings are used to join pipe.

 

 

 

Downspout adapter Connects downspout pipe and 4 inch corrugated pipe. Comes in 2 sizes.

Downspout adapters have an end that fits over an existing rectangular downspout pipe and converts it to a 4” corrugated male fitting. The adapter is installed close to the ground, a small piece of solid corrugated pipe is used to get below the ground surface. An elbow would then attached to the solid pipe section and another drainpipe section would be cut to length to get the water out away from the house.

90 degree Elbow

Makes a 90-degree turn. It uses 2 female ends.

 

 

 

Tee

Tees are used in a complete system where 2 drainpipes are joined into one.

 

 

 

Wye

A wye supplies the same function as a tee except allows the two incoming pipes to be coming in at less of an angle in relationship to each other.

 

Slotted end caps and 4” grates Perforated end caps, grates or basins should be used to close any above surface open end of corrugated pipe. These caps or grates keep debris and animals from clogging the pipe.

Solid end caps

Solid end caps can be used to keep debris out of an open end of corrugated pipe in a drainage system. These would most often be used in a drainage field application on slotted or slotted pipe with sock.

Drain Basin

Drain basins are used as a collection or distribution basins on a drainage system. The basin can be used instead of 4” slotted end caps or end grates. KLS offers a relatively small single and double outlet basin. A 6” grate goes on the top of the basin and the 4” corrugated pipe plugs in to the side outlets. The basin comes in both single and double outlet configurations.

6" Corrugated Pipe & Fittings

The 6 inch corrugated pipe comes in 100-foot rolls or it can be cut to length as needed. There are two types to choose from.

6” corrugated solid

This pipe is most commonly used to route water to a new location.

 

 

6” corrugated with slots and a sock.

This corrugated pipe uses the same pipe as the slotted but also includes a fiber filter sock around the pipe. The use of the slotted pipe with the filter or sock is a good way to keep the pipe from getting clogged by fine soil or silt.

6" Fittings

6” internal coupling

Internal couplings are used to join pipe.

 

 

 

6” x 4’ reducing coupling

Internal couplings are used to join pipe. This coupling links 6" pipe to 4" pipes.