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.

Helpful Information on French Drains and Drainage Systems

French Drains, Surface Drains, and Channel Drains are the three main ingredients of residential and business Drainage Systems.  Simply put, French Drains are used in large areas, Surface Drains are used in smaller areas and Channel Drains are used in and across Cement.

Some Simple rules about French Drains and Surface Drains.  A French Drain should be installed when there is a large volume of water to be drained over a large area.  Surface Drains are needed when the water volume is smaller and the Drainage Area is small and focused.  French Drains move away Surface Water and Sub-Surface water (water that flows under ground).  Surface Drains move only surface water.

French Drain in Oklahoma City

 Many people don't know what type of Drain to use in a particular situation.

French Drain Design must take into account many variables.  One consideration for a French Drain that many times is missed, is the type of soil.  French Drain Design must take into account the type of soil that the French Drain runs through.  If the soil is "Tight or made up of Clay, A French Drain Liner may not be necessary.  The Gravel or Limestone that is used to fill the French Drain trench may be all that is needed to maintain the integrity of the trench over time.   This means that dirt will not mix in with the French Drain Gravel and clog it up over time.  This is not the case however if your soil is sandy or loose.  A Trench Liner should be used to prevent this type of soil from moving into the gravel of the French Drain.  Trench Liners are relatively inexpensive and are not hard to install.  If you are not sure what to do then install the Trench Liner in the French Drain.

 

Installation of a French Drain in Edmond Oklahoma

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.  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.

Curb Outlet as an Exit Point for a French Drain in Edmond

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 Surface Drain in the front yard, which runs to a Curb Fitting that lets all the water drain out on to the street.

Popup Emitter to release water from a French Drain in Yukon

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

CMG Installs all types of Drainage Systems  in Oklahoma.

Today we installed a 6 Inch French Drain at an apartment complex near Lake Heffner.  The French Drain started in the back yard of one unit.  The Drain Pipe went under the fence and into the adjoining unit's back yard.  The French Drain then looped around their patio and out under their fence to the west.  To get the 6 inch Drain Pipe to the correct Exit Point, we had to cut out 30 feet of sidewalk and run the French Drain Pipe under the sidewalk.  Next, we replaced the sidewalk with new concrete.  Finally, we dug a drainage ditch across the front yard to the parking lot.  We covered the Drain Pipe with sod that we carefully removed when digging the trench.  At the edge of the parking lot a 6 inch Pop-Up Emitter was installed to release the Storm water.  Seven Gutters were connected directly into the Drainage System along the way.

Installing Gravel on top of a 6 inch French Drain

This particular Drainage System was made up of 55 Feet of 6 inch French Drain, 78 Feet of Solid ADS Solid Drain Pipe, Seven Gutter Connections, and one 6 inch Pop-Up Emitter.

French Drains Protect Foundations

FRENCH DRAINS PROTECT FOUNDATIONS

 Standing water can cause many types of property damage ranging from foundation problems to cracked sidewalks and dead plants and shrubs.  If you have need of French Drain or Surface Drain, give CMG a call.  We provide free estimates for all of central Oklahoma.

French Drain With Colored Gravel in Oklahoma City

Some Drainage Systems are complex and incorporate several types of drains.  Most Drainage Systems , however are basic and require just one type of Drain.  CMG installs a variety of drains to solve a variety of problems. French Drains, Surface Drains, and Channel Drains are most commonly used.  If you live in Edmond and need a Channel Drain installed across your driveway, or if you live in Norman and need a French Drain in your backyard, or if you live in Oklahoma City and need a Surface drain installed next to your sidewalk, give CMG a call.    405-226-0629

French Drain in Edmond Oklahoma

The most common Drain that we install is the French Drain.  This is because the French Drain is versatile.  It can handle Surface Water Problems or Underground Water Problems (sub-surface).  A huge mistake that many people make is assuming that water gets to a Problem Drainage Area by flowing over the surface only.  For example, if water is flowing down hill underground toward your home's foundation, the only way to stop or intercept it is with a French Drain.  Water can flow laterally into a perforated French Drain Pipe.  It is then diverted away from the Problem Drainage Area to an Exit Point.

CMG Servicing: Oklahoma City, Moore, Edmond, Norman, Yukon, Mustang, and all of central Oklahoma.

A  French Drain is completely different from a Surface Drain.  A basic French Drain consists of a Perforated Drain Pipe in the bottom of a trench.  A  Trench Liner is sometimes used depending on the Drainage System Design and the type of soil.   The Drain Pipe should have a neoprene sock around the Perforated Drain Pipe.   This is to ensure that the Drain Pipe does not become clogged. A trench is dug that is slightly wider than the French Drain Pipe that is being used.  There are several sizes of French Drain Pipe.   Three Inch, Four Inch, and Six Inch are the most common sizes of French drain Pipe. The dirt that is 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.

Pipe running to street form French Drain in back yard.

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.

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 French Drain.  In some cases thick grass growing up through the French Drain will create a natural "Thatch" filter.  This makes the French Drain invisible.  The trick is to allow the grass to grow over the French Drain Gravel without covering it up with dirt.  Grasses such as Bermuda which grow well in the sun will put out runners and new roots and will grow up and through the French Drain.  This will not affect the performance of the French Drain.  The problem is that some times depending on the type of soil involved, it may take a long time to completely cover up the French Drain.  Sprinkling grass seed down in the gravel will speed up the process.

DON'T 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.   

Installing a Curb Outlet for a French Drain in Oklahoma City

If you install a French Drain in a sunny area, you can:

                                         A.  Leave the  French Drain as-is and allow grass to grow over it in time.

                                         B.  Add grass seed directly to the French Drain gravel with (Light Hand Watering) to speed the growth process

                                         C.  Leave the French Drain as-is but decorate it with stepping stones and landscaping rocks ( leaving large cracks between stones to allow water to get into the French Drain,

2

If you install a French Drain in a shady area you can:

                                        A.  Leave the French Drain as-is, it will work well and look as it did for many years.

                                        B.  Leave the French Drain as-is, but decorate it with stepping stones or landscaping rocks.  Many French Drains are hidden under rock walk ways.

French Drain in Oklahoma City

IF YOU NEED WATER DRAINED AWAY FROM YOUR HOME OR BUSINESS CALL CMG.  405-226-0629 CMG Sprinklers and Drains installs all types of Drainage Systems and French Drains.