French Drain / Oklahoma City / Drainage System / Edmond, Norman, Yukon

CMG has installed French Drains and Drainage Systems in Central Oklahoma for 21 years.

 

Drains can protect your home and property from water damage.  CMG installs a wide variety of Drains in many different places.  A Drain or Group of Drains with Drain Pipe going to an exit point is a "Drainage System."

Drainage System / French Drain  Installation

Just what is a "French Drain?" Many times people incorrectly

A French Drain can protect your foundation!

use the phrase, "French Drain," when they mean "Surface Drain" or "Channel Drain."

Surface Drian

 

Channel Drain

 

A basic French Drain consists of a Perforated Drain Pipe in the bottom of a trench. The French Drain Trench runs through a Problem Drainage Area that needs to be drained.   The French Drain Pipe is perforated (Full of Small Holes) and has Neo-Prene Soc around the pipe.  This soc helps prevent debris from clogging the French Drain Pipe.

Perforated French Drain Pipe

 

The dirt that was taken out to make the trench is hauled away. It is replaced by some type of small stone or gravel depending on what is desired or available. I prefer crushed 1 inch lime stone. It is the most economical option in my area. Pea Gravel or some other type of small stone can work just as well. The lime-stone or gravel is placed in the trench on top of the perforated Drain Pipe and filled all the way to the surface (ground level). In some cases where the French Drain needs to be deep or is being placed in sandy soil, a special trench liner must be placed in the trench before the perforated Drain Pipe or the Gravel are installed. This helps maintain the integrity of the trench over time. It also increases the cost of the French Drain and the amount of time to install it. I install a trench liner in a French Drain about 20% of the time. Most of the time a liner in not needed.

French Drain March 2011

A French Drain is designed to handle a large volume of water and cover a large area. The Drain is anyplace the trench goes. It has many applications and can be used in many situations. It can be installed by itself or incorporated into a Drainage System with Surface Drains or Gutter Down-Spouts connected to it.

French Drain with Colored Gravel

 

 

The main downfall of a French Drain is that they, for the most part aren't very pretty. They don't look very nice in a yard once they are completed.

Depending on the area the French Drain is installed and the type of grass around the French Drain, will dictate whether grass grows over the lime stone. Grass can grow up and through the gravel in the French Drain over time eventually covering the gravel. This is Ok. It won't have a measurable effect on the performance of the drain.

French Drain

 

DONT COVER THE GRAVEL IN THE FRENCH DRAIN WITH DIRT. THE FRENCH DRAIN WON'T WORK IF THE TRENCH IS CLOGGED WITH DIRT. DON'T EVEN INSTALL IT IF YOU ARE GOING TO COVER IT UP WITH DIRT.

DECORATIVE STONE CAN BE USED TO COVER A FRENCH DRAIN AND THEY LOOK GREAT AND LAST A LIFETIME.

Drainage Systems can be made up of one drain or a combination of many drains.  Drainage  problems can be very complex.   Complex Drainage Problems may require a combination of several different types of drains all inter-connected and working together. Many times a French Drain, might be connected to a Surface Drain,  which then could be connected to another French Drain.   Other times the drainage problem may be simple and straight-forward requiring only one drain or several of the same type of drain connected together.

Cutting The Curb for French Drain Outlet

An example of a complex drainage system would be:  A French Drain in the back yard connected to a Surface Drain near a flower bed connected to several gutter downspouts, which are connected to a Channel Drain going across a driveway, which is connected to additional French Drain in the front yard, which runs to a Curb Fitting that lets all the water drain out on to the street.

A simple Drainage System might consist of a French Drain  which runs to a Pop-up Emitter which lets water drain over the curb and into the street.

An "Exit Point" is the term used for where all the water leaves the Drainage System.  Determining the Exit Point is very critical.  It is one of the first things we do when diagnosing a Drainage Problem.

Drainage Systems can:

1.  Keep water away from foundations -- A French Drain is best because it can move Surface Water and Sub-Surface Water (water moving under ground) away from the foundation.  Many times less experienced companies install Surface Drains to keep water away from foundations.  This can be a big mistake.  A Surface Drain can't move or drain Sub-Surface Water.   Also A Surface Drain often can't move enough water fast enough and easily becomes overwhelmed during a heavy rain.  A Surface Drain also can't cover or protect a broad enough area. Surface Drains should be designed in a Drainage System to be located in smaller Drainage Areas moving moderate amounts of water.  Surface Drains look better than French Drains.  If ,"appearance" is more important than Drainage Capacity, Go with the Surface Drain.  Just know what you are getting into and what your expectations should be. One side of a foundation alone,  can be over 100 feet.  A 4 inch or 6 inch French Drain is best when protecting a large area such as a foundation.

2.  Keep water away from small or inclosed areas.  This might be a low area just through a gate on the side of a house, or the low area between a flowerbed and the wall of a house, or standing water on or near a sidewalk or driveway.  These types of Drainage Problems are best served with Surface Drains.  A Surface Drain can move water away from a low area that is relatively small.  This can occur in yards, flowerbeds, sidewalks and driveways.  A surface Drain is designed to move Surface Water away from a problem area to a predetermined exit point.  Surface Drains are available in many sizes.  How quickly they remove standing water is usually determined by the size of the pipe that is connected to the drain.

Simply put, a Drainage System is one or a group of underground Drain Pipes that take water away from a place that has water standing on it or flowing across it.  The water that is in the problem area, can be causing damage or may be inconvenient or both.  (Usually Both)  A simple Drainage System is a Drain for the water to enter, a Drain Pipe to move the water away from the Drain, and an Exit Point for the water to be released out of the Drain Pipe.

Drainage Systems quickly can become more complicated.  Considerations must include:

How does the water get to the problem area?  There may be one or many sources.

Water Sources:

1.  It falls from the sky directly

2.  It flows down hill over the surface (surface water)

3.  It flows underground under the surface (sub-surface water)

4.  It flows from the edge of a roof ( There may be many roofs near the problem area, neighbors etc.)

5.  It flows from a gutter downspout

6.  It flows over the edge of a gutter because the gutter is too small is is clogged

7.  It flows up from the ground (seeps and springs are common in Oklahoma)

8.  It flows from a sprinkler system use ( yours or your neighbors)

9.  It flows from a leaking pipe ( water mains, water meters, water lines, sprinkler pipes, sprinkler valves)

There are other reasons for Drainage Problems, the above reasons are just the most common.

Once the number of water sources is determined, a rough estimate of the amount of water that needs to be drained away on average must be estimated.  This can be simplified down to "SMALL, MEDIUM, OR LARGE AMOUNTS OF WATER TO BE DRAINED AWAY.  You don't have to be an engineer trying to calculate fluid dynamics.  Experience at diagnosing drainage problems helps however.  How much water needs to be moved will help determine the type and size of the Surface Drain or French Drain that needs to be installed.  It also helps to determine the size of Drain Pipe required for the Drainage System.  A good rule to follow is, "If in doubt, install a larger Drain and Drain Pipe."  Unused Drainage Capacity is better than property damage caused by a Drain that is overwhelmed by too much water.

For home and small business use typical materials used are:

6 inch, 9 inch, and 12 inch Surface Drains -

3 inch, 4 inch, and 6 inch Drain Pipes --

3 inch, 4 inch, and 6 inch French Drains --

French Drains move more water than Surface Drains --

French Drains move Surface Water and Sub-Surface Water

Surface Drains move Surface Water only

Surface Drains look nicer than French Drains in most cases

Once the type and number of drains is determined and what size Drain Pipe will connect them, an exit point must be selected.  (Where is the Drainage System going to take the water to and release it?)

The Drainage Curb Fitting is installed when the desired exit point for the French Drain will release the Drainage Water into the Street.   The Drainage Curb Fitting is rectangular in shape and made to be installed through the curb.  A small section of Curb is cut out with a concrete saw.  The Section is a few inches wider than the Drainage Curb Fitting.  We then install new concrete around the curb fitting.  Once the concrete has dried, the Drain Pipe coming from a French Drain or Surface Drain is connected to the Drainage Curb fitting and then covered with dirt.

Curb Fitting with Acrylic Cement

The Drainage Pop-Up Emitter is connected to the end of a Drain Pipe.  It is downhill from a French Drain or a Surface Drain.  It is a small release basin with a green pop-up lid.  When releasing water, it pops up about an inch to release the water from the French Drain or Surface Drain.  When the Storm Water has moved through the Drainage System and out of the Pop-Up Emitter, the green lid closes back to its original closed position.  The emitter is designed to release water out into a yard or down a hill or other desirable Drainage Exit Point where there is no curb.

Popup Emitter to release water from a Drainage System in Yukon.

Drainage System installation and design is a big part of our business.  Does your sidewalk turn into a moat after a hard rain?  Does part of your yard look like a pond after a thunderstorm?  Worst of all, are you experiencing concrete deterioration to your foundation, sidewalk, or driveway.  CMG can design a Drainage System to solve your Drainage Problems.  Our Drainage Systems can be simple or complex.  We utilize, French Drains, Surface Drains, Channel Drains, Basin Drains, Basement Drains, Trench Drains, and Sump Pumps.  Estimates are free!

Large 6 Inch French Drain Installed in Norman

Just what is a "French Drain?"  Many times people incorrectly

use the phrase, "French Drain,"  to apply to many different types of Drains  that could be used in a Drainage System.

French Drain Design in Oklahoma City

French Drain Design in Oklahoma City-  Angies's List Award Winner

French Drain Installation --   French Drains are designed to do a lot of things.  If you have an area that has unwanted water standing in it or running across it, a French Drain can be the answer.  A French Drain is a trench that runs across the Drainage Problem Area.  A French Drain Pipe is placed in the bottom of the trench.  The French Drain Pipe is perforated with thousands of small holes.  In most cases the Drain Pipe has a nylon soc around the pipe to act as a filter for the French Drain.  The French Drain trench is then filled with some type of small rock or stone.  CMG typically uses crushed 1 inch Lime Stone to cover the French Drain Pipe.  The dirt that was dug out of the trench is taken away or spread out around the French Drain.  The Lime Stone replaces the dirt and fills the French Drain Trench all the way to the surface.

 

Drainage System Installation in Yukon

Large 6 Inch French Drain Installed in Norman

When water come in contact with the French Drain, it seeps down through the stones and into the French Drain Pipe.  It then flows through the Drain Pipe to the exit point.  Typically a French Drain will have two possible exit points.   The First is called a "Pop-Up Emitter."  It is a Green Lid on top of a release basin for the French Drain.

Popup Emitter to release water from a Drainage System in Yukon.

The second type of Exit Point for a French Drain is a "Curb Fitting."  The Curb Fitting is installed through the curb going out into the street.  The French Drain Pipe runs to the Curb.  The curb is cut out and the Curb Fitting is cemented through the Curb.

Installing a Curb Fitting for a French Drain in Edmond

French Drains are designed to move large amounts of water.  A French Drain moves water away from the Drainage Problem area from the Surface like a large Surface Drain, But also below ground, or sub surface.  Most people don't take into account the water that flows to a problem area underground.  Sub surface water flow is not eliminated by a Surface Drain.  A French Drain can move away water that is below the surface of the ground and drain away water that is on the surface.

We just finished a 4 inch Drainage System in Yukon.  It was a complicated system to install.  It utilized 4 inch French Drain in the flower beds,  12 inch Surface Drains on the side of the house,  6 inch French Drain along the garage foundation with 2 Pop - Up Emitters in the back yard and 3 Curb Fittings in the front.    First we installed 4 inch French Drain in the flowerbeds on both sides of the front door.  We connected 4 inch solid Drain Pipe into the French Drain and ran them underside walk to the curb.  Next we cut the curb with a concrete saw and installed 3 curb outlets for 3 separate French Drains.

Installing a Curb Outlet for a French Drain in Oklahoma City

Next we installed 4 12 Inch Drain Basins with grates along both sides of the house continuing with Solid Drain Pipe to the Pop-Up Emitters on the back fence. Finally we completed the Drainage System by installing a long run of 6 inch French Drain down the side of the garage foundation.   Installing the French Drains in the flower beds was the most difficult and took the most time.  Each French Drain took over a ton of crushed limestone to fill the French Drain trench.  The Six inch French Drain took even more limestone.

Angie's List rates us A+ and now has awarded CMG Sprinklers and Drains for our exceptional customer service in french drains, surface drains, sprinkler installations and repair!  Our french drains and sprinkler systems come with a TWO YEAR WARRANTY on all parts and labor.  In business now for over 20 years, CMG is a local company that takes great pride in delivering the best in customer service and quality work you can trust.  CMG services what we install and we are always a phone call away for all your drainage and irrigation needs.  405-226-0629.  We service all of Central Oklahoma including Edmond, Oklahoma City, Moore, Norman, Midwest City, Del City, Purcell, Blanchard, Newcastle, Mustang, Yukon

Drainage System Installation in Norman

Oklahoma City French Drain, French Drain Information,

CMG installs French Drains and Drainage Systems all over Central Oklahoma.

A French Drain is a long perforated pipe in the bottom of a trench.  The trench runs through the problem drainage area.  The trench is filled with gravel or crushed lime stone.  The French Drain takes in water any place that water runs into the trench.

A French Drain will move large amounts of water from the Drainage Problem Area to the Exit point.

A French Drain will Drain away water that gets to the Drainage Problem Area in 3 ways.

1.  Water gets to the problem area by falling from the sky.

2.  Water gets to the problem area by flowing down hill over the ground.

3.  Water gets to the problem area by flowing underground. (Sub-Surface water flow)

French Drain Running Through Low Areas in Yukon

Number 3,  Sub-Surface water flow is the big consideration.  When doing a Drainage Diagnostic, this is the area that is many times missed or not considered by less experienced companies.  CMG relies on 21 years of experience.  Many Times it is cheaper and more effective to install a French Drain over a Surface Drain.  A Surface Drain can't move as much water as a French Drain, and a Surface Drain can't Drain away Sub-Surface water.  Surface Drains should be installed in areas where the Drainage Problem area is smaller and is not affected by sub-surface water.

Surface Drain

The draw back to a French Drain, is that it is not a pretty as a Surface Drain.

6 Inch French Drain

French Drains do a great job running along foundations and driveways.  A French Drain will keep water away from cement and prevent damage to concrete if water should freeze up against it.  A French Drain can keep your foundation Dry.

CMG Services Oklahoma City, Moore, Norman, Edmond, Yukon, Mustang, Midwest City, and all surrounding Central Oklahoma. 

    

We just finished a 4 inch Drainage System in Yukon.  It was a complicated system to install.  It utilized 4 inch French Drain in the flower beds,  12 inch Surface Drains on the side of the house,  6 inch French Drain along the garage foundation with 2 Pop - Up Emitters in the back yard and 3 Curb Fittings in the front.    First we installed 4 inch French Drain in the flowerbeds on both sides of the front door.  We connected 4 inch solid Drain Pipe into the French Drain and ran them underside walk to the curb.  Next we cut the curb with a concrete saw and installed 3 curb outlets for 3 separate French Drains.

Installing a Curb Outlet for a French Drain in Oklahoma City

Next we installed 4 12 Inch Drain Basins with grates along both sides of the house continuing with Solid Drain Pipe to the Pop-Up Emitters on the back fence. Finally we completed the Drainage System by installing a long run of 6 inch French Drain down the side of the garage foundation.   Installing the French Drains in the flower beds was the most difficult and took the most time.  Each French Drain took over a ton of crushed limestone to fill the French Drain trench.  The Six inch French Drain took even more limestone.

French Drain in Oklahoma City

French Drains can utilize  several types and sizes of French Drain Pipe.  An older type that is not commonly used any more is 4 inch PVC Pipe with large half inch holes drilled in the Pipe.  This doesn't work very well,   Because the holes are too large and the number of holes in the French Drain Pipe are too few.  Also there is no filter or "Soc" around this particular French Drain Pipe.  If it is used in sandy or loose soil the holes will clog and the pipe will fill up with sand.  PVC French Drain Pipe should be avoided.

Installing a Drain Pipe For a French Drain that Releases water through a Pop-Up Emitter at the Street

ADS French Drain Pipe is much better, the holes are smaller and much more numerous.  It also comes inside a soc that acts as a filter and helps keep sand and debris out of the French Drain Pipe.  It works very well.

For Small business and Residential French Drains, Four inch ADS Perf/Soc French Drain pipe is adequate and the most common.  It is used for the majority of all French Drains installed.  French Drains can be installed using 3 inch ADS Perf/Soc but many times it is too small and can be overwhelmed by a heavy rain or from a bad design.  (Too many gutter down spouts connected directly into the French Drain, For Example)  Three Inch French Drain Pipe should be avoided if possible.

Connecting Gutter into French Drain System in Moore

Six inch  ADS Perf/Soc French Drain Pipe is usually a good idea when possible.  It carries a much larger volume of water.  Six Inch French Drains are rarely overwhelmed.

The Drawbacks to 6 inch French Drain installation are:  1.  The Materials Cost is higher for six-inch French Drain Compared to Four Inch Pipe.

                                                                                                                    2.  Many times 6 Inch French Drain Pipe is too large for many applications, Such as going under a fence or sidewalk.  

                                                                                                                   3.  The trench for a 6 inch French Drain must be much larger than a 4 Inch

                                                                                                                   4.  The amount of gravel or limestone or River Rock used to Cover the 6 inch French Drain is Much larger

 

All things being considered, the performance and longevity of a 6 inch French Drain is well worth it if you are trying to protect something of value to you!  If the higher cost and the additional labor and materials are not a problem and 6 inch French Drain pipe is not too big for what you want to do then a 6 inch French Drain would be the best.  

  CMG Services Oklahoma City, Moore, Norman, Edmond, Yukon, Mustang, Midwest City, and all surrounding Central Oklahoma.