Posts Tagged ‘French Drain Information’

French Drains Basic Design.  Oklahoma Drainage and Sprinkler Repair provide Basic Information for its customers concerning French Drain installation and Service.

French Drain Basic Design is fairly Straightforward.  All types of Drainage Systems involve digging Drainage Trenches and Installing Drainpipes.

One issue that must be addressed is Slope or Fall” of the of the Drainpipe in the Drainage Trench.   The Drainpipe must run downhill to the exit point to move the water away from the problem area.

 

drain trench

Drainage Trench Running Downhill

 

Gutter to French Drain

Connecting Gutter to French Drain

In many cases slope is easy to determine if the distance from the drain to the exit is obliviously down hill.   The trouble is installing a French Drain or a Drainage System where the drainpipe is not always on a pronounced slope.  A slight slope can be hard to see. If the ground looks level then the water won’t flow very quickly, If at all.

If the entrance drain is slightly higher than the exit, say only a few inches, then the water will flow across level ground to the exit point.  Problem is, the water will move very slowly as long as water is still coming into the French Drain.  It pushes the water in front of it out of the exit very slowly.  Movement will stop when water stops coming into the Drain.  It will stay in the pipe and just sit there till the next time it rains.

No Slope

If you are Installing a Drainage System across level ground, it will never drain very well.

If you are not sure if a Drainage System is possible because there might not be enough Slope, there is a simple test you can run.  This test takes a good bit of digging.

Start digging the trench where the drainpipe will run.   Lets say for example that its about 60 feet.  Start digging where the drain will be.  Typically, a 4-inch drainpipe will need to be installed in a trench 8 to 16 inches deep, depending on your needs.  Dig about 10 feet from where the drain will be toward the exit point.

Once you have dug a trench at least 8 inches deep, and about 10 feet long toward the exit, take a hose and place it in the trench where the drain will be installed. There should not be pipe in the trench at this time, just the empty trench.

Turn on the hose so a small amount of water is coming out.  The water will start to flow down the trench from where the drain will be, toward the exit.  Again, there is no drainpipe in the trench.

trench water test

Water test for a Drainpipe

Watch the water as it flows down the Drainage Trench.   In some areas it will flow quickly which is good.  Look for areas where water flows more slowly and begins to pool.  Once this occurs, turn off the hose and get your shovel.  With water still in the trench, dig downhill from the pooling spot.  Remove the dirt that is slowing the waters flow toward the exit.  Repeat this process until you have reached the exit point of the Drainage System.

This may seem like a lot of unnecessary work.  Believe me it is worth it.  Once the water flows at a fairly steady rate all the way to the exit, you have ” Set the Flow of the Drain.”

This process is called “Setting The flow.”

There are benefits to taking this process seriously.

First it will tell you if the flow is even possible for the Drainage System that you want to install.  If you can’t get the water to flow to the Exit Point Cover up your Drainage Trench and Consider Other Options because this particular Drainage Design will not work.  If you can redesign your system by moving your drain pipe or your exit point, then do so.  A Sump Pump may be your only option if moving the drainpipe or the exit does not improve things.   Sump Pumps will be covered in a future blog.

Second, If you were successful in setting the flow, then you will roughly know how fast the water will flow in your Drainage System.  It will give you a “Worse Case Scenario” for your Drain’s Performance.

Water will always flow better and faster and more efficiently in a Drainpipe, than in a trench.

If the water is flowing pretty good in the Drainage Trench without a Drainpipe in it yet, then it will flow even better once the Drainpipe is installed.

This process is much better than blindly digging a drainage trench and installing a Drainage System.  It will keep you from installing something that doesn’t work.

 

French Drain along walk

French Drain along walkway

Flood Prevention vs Drainage System

Do you want your French Drain to prevent flooding or to drain away water after if floods?

 

This is a series of blogs that first explains exactly what French Drains and Surface Drains are,  and how they are used in a Drainage System.

Next, I will explain exactly what the benefits and drawbacks are of each type of drain and why you would use one type of drain over another in many different situations.

Last, I will explain the specifics of how to install your own Drainage System and how to diagnose exactly what type of system you need in the first place.

At the top and  bottom of every blog in this series will be a listing of all the connecting blogs that you can “Click” on to easily move back and forth through the series.

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Problem Drainage Area

This is a good spot for a French Drain

A final thought on Intakes as part of a Drainage System.  Remember, an Intake is a French Drain or a Surface Drain.  It is the part of the Drainage System that draws water into the Drain Pipe.

Once you have decided where and  how many Intakes your drainage system needs,( how many and what kind of Drains ) the next thing to think about is the Transition other wise known as the Drain Pipe.  For a typical Drainage System there are three choices of Drain Pipe by Size.  ( 3 Inch, 4 Inch, and 6 Inch )

Three inch is least expensive but can easily be overwhelmed if a large amount of water needs to be drained away.

Four inch is by far the most common.  It also can be overwhelmed if too many Intakes (Drains) are connected to it.

Six Inch Drain Pipe is almost never overwhelmed, but it is bulky and hard to work with and is by far the most expensive.

4 inch Drain pipe

4 Inch Drainpipe before it goes in the trench

What Do I mean by overwhelmed?  It means that water is going to the Problem Drainage Area faster than the Pipe can move it away.

This is very important to some people and not important at all to others.  Here is why!

house flood

This is a great place for a French Drain

Really, think for a minute about why you want to install a Drain in the first place.

Do you want to prevent water from ever reaching Problem Drainage Area?  Or is it OK for water to reach the Problem Drainage Area and then be drained away over time.

If, for example, you are trying to protect your prize plants, you don’t want flood water reaching them at all.  Or you might be trying to prevent water from reaching part of your house because it then runs into the basement.  You don’t want water, under any circumstances,  to reach a specific spot or area.   If this is the case,  You want a

Flood Prevention System

Gutter to French Drain

Gutter Connected to High Volume 6-inch French Drain

A Flood Prevention System is actually a type of Drainage System, However the goal is different and that can change the Design.

On the other hand if you don’t mind so much if water gets into the Problem Drainage Area,  you just want it to drain away in a relatively short amount of time.   This is called a

Drainage System

If your motivation is to have a Flood Prevention System, Then the Drainpipe being overwhelmed is a really bad thing.  It means that your Flood Prevention System has failed.  Your Drainpipe could not move the water fast enough to provide the Safety that you desire.   Your plants have drowned and your basement has flooded.

 

 

 

If your motivation is to have a Drainage System, Then the Drainpipe being overwhelmed is not so bad.  Even though water is flowing into the Problem Drainage Area faster than the Drainpipe can take it away, The Drainpipe is still moving a lot of water and eventually the rain will stop and the Drainpipe will catch up.  In relatively a short amount of time, the water will be gone.

French Drain install front

French Drain Installation in Edmond

What you want, dictates how you design your Drainage System!

Drainage Systems are not as robust as Flood Prevention Systems.  A Flood Prevention System has all the same basic concepts and structure as a regular drainage system, just more!

If you want a Flood Prevention System, the goal is to intercept water before it runs somewhere.

This means:

  1.  More Intakes ( Lots of Drains) French or Surface
  2.  Larger Drains,  6 inch French Drains, or 18-inch Surface Drains for example
  3.  Larger Transitions ( Larger Pipe)
  4.  More Transitions (  More Pipes)
  5.  Larger Drainage Exits
  6.  More Drainage Exits

I know we haven’t talked about Drainage Exits, but we will in the next blog.

A Drainage System is less of everything listed above.

Obviously a Drainage System is less expensive, less evasive, and easier to install.

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FRENCH DRAIN OR SURFACE DRAIN?

When Determining what type of Drain you need for your Drainage System.  In our last blog, we talked about Surface Water and Sub-Surface water and why you need to understand them before designing your Drainage System.  If you need to review, click below.  If you have a question or comment please leave it at the bottom of the page. I will respond as quickly as I can.

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Before we get into Water Movement, we need to discuss Surface Drains.

Surface Drains come in many shapes and sizes.  The two most common are Basin Drains and Channel Drains.

A Basin Drain has a Square Grate and it sits on top of a catch basin.  It will have a single pipe connected to it or it will have a drain pipe running into it and a pipe running out of it.  We used this picture in a previous blog, but I want to show it to you again.

Surface Drain Connection

Surface Drain connected to a Transition Pipe

Below is a Basin before the pipe is connected to both sides.  The pipe is cut and connected to one side.   Another piece of Drain Pipe is connected to the other side.  The Drain pipe does not run straight through the basin.  Water must have a way to enter the Drain Pipe.  The Surface Drain in the picture is the most common size used in residential applications.  The Drain Pipe connecting to it is 4 inch ADS Solid Drain Pipe.

For a Surface Drain to work well it must be placed in a low lying area of standing water.  It is not intended to intercept moving water or to drain away Sub-Surface water.

 

In review, detecting Surface Water is straight forward.  You can observe how it flows into the Problem Drainage Area.

Sub-Surface water is not so easy.  You can’t see it move into the problem area.  So What do you do?

First take a look at your soil.  What type of soil do you have?

Soil with a lot of clay will have less Sub-Surface Water, Maybe none at all.  If you do have some it will move into the area slowly.  If you have sandy soil the underground water will move there in a hurry.  Most people will have something in between.

To be sure, a few simple tests can help.

Next check the problem drainage area when there is no water standing in it.  Is it soft and mushy when the surrounding area is more firm?  This is an indication that Sub-Surface Water is still flowing into the area.  Another way to collect information is to dig a small hole about a foot deep in the area. Check it every day for several days.  If water is standing in the hole, you have a Sub-Surface Water issue.  How fast it flows into the hole is also important.

OK, you have Sub-Surface water along with Surface Water in your problem drainage area.  Your Choice for the correct “Intake” for your Drainage System should be a French Drain.

OK, You have no Sub-Surface water. You only have Surface Water flowing into the problem area.  You need a French Drain If you are trying to intercept the water as it comes into the area.  Many times water will run around the surface drain and still flood the area.  Also the Surface Drain is much more easily overwhelmed and water will run past it that way too.  Again, this is very important,  If you are trying to intercept water before it gets to where its going, don’t use a Surface Drain.

A Surface Drain should be used in a Medium to Low Volume Water situation.  The water needs to be stationary or moving very slowly.  It should be placed in an area that is the lowest point in the Problem Drainage area.  They also work well in smaller confined areas such as pool decks, along sidewalks, or in flower beds.

More than one Surface Drain can be connected to one drain pipe in a “Daisy Chain” of Drains if you have several low spots in a larger area.

In many cases a small french drain can be installed in almost every place that a Surface Drain might be installed.  People opt for a Surface Drain over a French Drain because they like the way the Surface Drain looks more than the way the French Drain looks.  For some People, Looks are more important than functionality.

Installing concrete channel drain

Setting the concrete around the channel drain

 

Channel Drains are set in concrete or dirt but dirt is not always the best idea.  Setting a channel drain in dirt should only be done when a shallow surface drain is needed and that is the only option.

Channel drain in concrete

Channel drain in concrete

Setting a Surface Drain in Concrete such as a driveway or a Sidewalk is a good application for a Surface Drain.  Many times it is better to install a French Drain in your yard over a Surface Drain.  What ever makes you happy!

French Drains can be made to look very decorative.

decorative french drain

French Drains can be decorated with many types of stone

In conclusions,

French Drains are used for :  1.  Higher water volume situations  2.  Intercepting moving Surface Water  3.  Solving Sub-Surface water problems

Surface Drains are used for: 1.  Smaller water volume situations  2.  Standing Surface Water that has reached its destination   3.  Smaller and more confined areas  4.  Set in concrete such as sidewalks or Driveways

 

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FRENCH DRAIN INFORMATION

French Drains and Surface Drains as part of Drainage System

This is a series of blogs that first explains exactly what French Drains and Surface Drains are,  and how they are used in a Drainage System.

Next, I will explain exactly what the benefits and drawbacks are of each type of drain and why you would use one type of drain over another in many different situations.

Last, I will explain the specifics of how to install your own drainage system and how to diagnose exactly what type of system you need in the first place.

At the top and bottom of every blog in this series will be a link  that you can “Click” on to easily move back and forth through the series.  If you have a question or comment, please leave it at the bottom of the page.  I will respond as quickly as I can.

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French Drains are Perforated Pipe in a Drainage Trench with the dirt removed.  Gravel is then placed surrounding and on top of the French Drain Pipe.  Typically French Drains For Residential and Small business applications have perforated pipe that is 3 Inch, 4 Inch or 6 inch.  The larger the pipe the more water your Drainage System can handle.

I personally believe that ADS French Drain Pipe is very good.  Pvc French Drain pipe is very bad.  I have made a very good living replacing PVc French Drain Pipe with ADS French Drain Pipe.

ADS holds up over time much better.  It has a Neoprene Sock around the perforated pipe that keeps dirt from clogging the drain pipe over time.  PVc French Drain Pipe becomes brittle and cracks and deteriorates in only a few years.  It will not have a “soc” around either.  If you are not sure which one is which, Ads is Black and Pvc is white.  The choice is yours.

Anyway, Sorry! i’ll step off my soap box.

Limestone covering a French drain

Large 6 Inch French Drain

A French Drain is designed to move a large amount of water in a large area such as a yard, flower bed or on the side of a house.   They are installed in dirt and are covered with some type of crushed stone or gravel.  A trench that a French Drain is going to be installed in looks like this.

A Trench Liner can be installed in the trench as well.   It is cloth that is designed to go in the empty trench before the Perforated Pipe and the Gravel is installed.  The Trench liner can be found at most retail drainage outlets.  If you can’t find any, ” Weed Matt” in the garden section that goes in flower beds works very well.

A trench liner will increase the cost of a French Drain.  Many times they are not necessary.  Sometimes they are very necessary.

A Trench Liner will maintain the integrity of the Drainage Trench over time.  But, If you have a “Sub Surface Water Problem they may impede how well your French Drain Works.

Don’t worry, It will make more sense as you read this blog and ones that follow.

A completed French Drain looks like this.

river rock french drain

French Drain covered with River Rock.

Moving a large volume of water is not the only reason to install a French Drain.

When Diagnosing a Drainage Problem, the first thing to consider is how does the water get into the Problem Drainage Area.  The most obvious way is by flowing over the top of the ground.  This is called “Surface Water.”  Water comes from somewhere else by flowing over the ground.

I know that’s overly simple but right now its necessary.

French Drains do a Great Job in moving Surface Water away from the flooded area.  For example, the water flows out of my neighbors yard, down the hill and into mine.  It then runs into my French Drain, Then into the drain pipe, it then moves through the drain pipe to the exit point at the curb outlet  and into the street.

( Simple Enough)  Ahh, but there is more!

The thing that people miss, don’t anticipate, and don’t understand, is “Sub-Surface Water.”  Sub-surface water is not accounted for many times, in the design of a Drainage System.

OK, Think about the example above again, only this time the water is flowing underground as well as over the surface.  So, in fact, you have at least two sources of water feeding your Drainage Problem Area.

Why is that important?

Surface Drains are not designed to move “Sub-Surface Water.”  Just as the name says, Surface Drains move Surface Water.

Many times a Surface Drain is installed out in a yard to solve a drainage problem instead of a French Drain.

Surface Drain Connection

Surface Drain connected to a Transition Pipe

Don’t get me wrong, Surface Drains are great!  I have installed literally thousands of them since 1993.  They do an awesome job when they are installed for the right reasons.  Problem is they do absolutely nothing to drain “Sub Surface Water”.  In later blogs we will discuss the correct application of a Surface Drain.

Back to the French Drain.  A French Drain can take in water topically. ( In the top of the drain) It also can take water in Laterally. ( Through the Sides underground)

So you must determine before installing a Drainage System,  how the water gets into the problem drainage area.

Is it Surface Water?  Sub-Surface water? Or Both?  Our next blog will discuss this.

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French Drain Tips are Provided by Oklahoma Drainage and Sprinkler Repair.

French Drains and Surface Drains as part of Drainage Systems

This is a series of blogs that first explains exactly what French Drains and Surface Drains are,  and how they are used in a Drainage System.

Next, I will explain exactly what the benefits and drawbacks are of each type of drain and why you would use one type of drain over another in many different situations.

Last, I will explain the specifics of how to install your own Drainage System and how to diagnose exactly what type of system you need in the first place.

At the top and  bottom of every blog in this series will be a listing of all the connecting blogs that you can “Click” on to easily move back and forth through the series.

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A French Drain is just a part of a Drainage System.  Many people refer to basically any type of Drain in or around their home as a French Drain.  This actually in not correct.

Gutter to French Drain

Connecting Gutter to French Drain

Before you can really understand what a French Drain is, you first must be familiar with a Drainage System and what it involves.

Intake

A Drainage System has three parts.  It has an “Intake” to bring water into the Drainage System.  It is placed in a low area where water is standing or is in area where water sometimes runs across it over the surface or under the surface or both.  An “Intake” will be a French Drain, Surface Drain or Sump Pump.

In a Simple Drainage System there will only be One “Intake.”  In a Complex Drainage System there will be several Intakes.  They may vary in type and size.  For Example, You may have a Drainage System with a Surface Drain, and a French Drain and a Sump Pump all as separate  Intakes in the Drainage System.  The Intakes will vary in number and type depending on what water issues you are trying to fix.

Transition

The “Transition” is the second part of the Drainage System which is the Drainpipe that moves the water out of the area that is flooded.  It is your water “High Way, ” as it were.  Typically there are two types of Transition Drainpipes that will be covered later.

Exit

Finally you have an “Exit” which releases the water from the drainage system.  It must be in an area that is lower than the French Drain or Surface Drain that is you “Intake.”

 

connecting down spout

Connecting Gutter Down Spout to French Drain Under Sidewalk

Perforated Pipe

A French Drain  is a perforated pipe that is basically full of slits or holes.  A trench is dug across the problem drainage area.  The dirt from the trench is hauled away.  The perforated pipe is placed in the trench.  The Drainage trench is dug deep enough so that the perforated French Drainpipe is several inches below ground level when placed in the trench.  Next gravel or some type of crushed stone is placed on top and around the French Drain perforated pipe until the trench is full.

 

Once a French Drain is completed you will see gravel on the surface in a place where dirt use to be.

Large Amount of Water

A French Drain is designed to take in and move a large amount of water.  It covers a large area with water standing on or moving across the area.  It needs to have some “Slope” or “Fall” to drain the water.  The pipe needs to run down hill to the exit point to release it from the Drainage System.  If it is up hill in all directions from the French Drain then there is a problem.  We all know that water will not flow up hill.  Some times this can be overcome when it is only slightly up hill by digging the trench deeper as you go up hill.  Still the exit point in the Drainage System must be lower than the French Drain where the water is taken into the drainage system, or the water will never drain.

In conclusion, a French Drain is a perforated Pipe in a trench covered in gravel.  It is the “Intake” part of a Drainage System.  It covers a wide area and needs to be higher than the exit point of the Drainage System.

This is the first in a series of blogs about French Drains and all other types of Drains as well.  If you would like to learn more just Click on the “Next Blog” below.

Next Drain Blog

Oklahoma Drainage — We install French Drains, Channel Drains, Surface Drains, Sump Pumps and Sod.

Servicing All Of Central And Western Oklahoma Since 1993.

Wow, Some Drainage Problems are tougher than others.  Had a customer in Chickasha with an unusual Drainage Problem.  She had a new Driveway installed.  The Cement work was nice enough but they left out one major consideration when installing the new Driveway.

Even after a small rain the water would run right down the driveway, under the Garage Door and directly into the Garage.  This was a bad problem that was about to get worse.  The first big rain came and everything was magnified.  The Rushing water took out the garage door and the back wall of the garage.  Yikes!!

Hmm,?  What to do?  The company that installed the Driveway was nowhere to be found.  No surprise.

The water volume was huge and the customer had no means to redo the driveway which was substantial.

The solution took a little “Out Of The Box Thinking”.

Channel Drain

We Installed an 8-inch metal channel drain grate across the driveway.  But with no channel drain underneath.  A large channel drain could not handle the water volume that we were dealing with.  Instead of installing a channel drain underneath the grate, we cut completely through the driveway concrete and installed two 6 inch French Drains stacked on top of each other underneath the Channel Drain Grate.

Channel Drain Across Driveway

French Drain Connected to a Channel Drain across the Driveway

This took place in July of 2017.  Since then, not a drop of water has reached the garage.

We put two French Drains under a larger version of a drain that looks like the above picture.

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.

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.

Drainage System

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.

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.

FRENCH DRAIN IN EDMOND OKLAHOMA

Recently Oklahoma Drainage and Sprinkler Repair installed a large 6 inch French Drain in Edmond.  The customer had water running under his back porch step and into his basement.

We did a Free Drainage Diagnostic and Estimate.  The French Drain design that we proposed would intercept the surface water and subsurface water that was flowing under the steps.  The Diagnostic plan called for a 6 inch French Drain to be installed above and several feet away from the steps.

It would run around the house parallel to the foundation and about 5 feet to the East.  The French Drain would run past the steps to a point where water must cross the French Drain or run up hill to the steps which in this case was not possible.  Once past the steps, the French Drain would transition to Solid 6 inch Drain Pipe and continue on around the house to the Pop-Up Emitter down hill in the side yard.  Along the way we attached several Gutter Down Spouts into the French Drain.

French Drain trench sidewalk

French Drain Trench under sidewalk and through curb

French Drain Installation, Drainage Systems, Surface Drain, Sump pumps, – Oklahoma Drainage

Hard rain and flooding seem to be more common all the time.  When I started this business in 1993, having over an inch of rainfall in an hour was pretty extreme.  Now having over 4 inch an hour rainfall is not unheard of and is becoming more common.

Protecting our homes and businesses from unwanted water should be a goal for all of us.

Oklahoma Drainage and Sprinkler Repair has seen and dealt with virtually every possible Drainage and Standing water problem that can occur in or around your home.  With over 2000 Drainage Systems installed since 1993, we have amassed a great deal of experience.  This is help full in seeing underlying problems and secondary issues that may be hard to see at first for the ” Untrained Eye.”  This allows us to get things right the first time.  In this business EXPERIENCE TRULY COUNTS!

Hiring your brother in law to put in your Drainage System or French Drain is as bad as hiring a Lawn mowing company that does landscaping and drains too?  Water can cause a huge amount of damage.  How important is your money and your home?

Blane Callen, 405 203 9419

problem drainage

Is this your yard?

Drainage problem

This is a great place for a French Drain

 

Curb Outlet for French Drain in Edmond

Curb Outlet for French Drain in Edmond

Running French Drain Pipe Under Sidewalk

Running French Drain Pipe Under Sidewalk

Oklahoma Drainage and Sprinkler Repair – 405 203-9419

Have you ever had water sanding on your Driveway?  Water on Driveways can cause cement or asphalt to break down and come apart resulting in cracks and deterioration.  Not to mention getting out of your car and stepping into water is never pleasant!

Sprinkler Repair Service Provided by Oklahoma Drainage and Sprinkler Repair

Since 1993 we have Replaced Sprinkler Valves that were sticking or were wore out.

Thousands of Sprinkler Heads have been adjusted.

Countless Sprinkler Controllers have been Reprogramed or Replaced.

We also have fixed a broken Sprinkler Pipe or Two.  Seems like a million.  Ok, not that many.

I wonder how many?  A lot!!!!

Oklahoma Drainage and Sprinkler Repair provides Service for all of Central Oklahoma Including:  Oklahoma City, Norman, Edmond, Moore, Yukon and Mustang.

Surface Drain installed in Driveway with Metal Grate.

Oklahoma Drainage and Sprinkler Repair can help by installing a surface drain in your driveway or sidewalk.  If you live in Edmond and need help, give us a call.  We service all of Central and Western Oklahoma.

We install all types of Residential Drains including : French Drains, Surface Drains, and Channel Drains.

Installing Channel Drain Across Sidewalk in Norman

 

These folks had water standing right at there front door.  Installing a Channel Drain solved the problem.

Oklahoma Drainage Drainage System Installation, French Drain Installation, Since 1993.

Servicing: Oklahoma City, Norman, Edmond, Lawton, Duncan, and all of Central and Western Oklahoma

Just what is a “French Drain?” Many times, people incorrectly

French Drain can protect your foundation!

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

 

 

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

 

The dirt that was taken out to from the trench is hauled away. It is replaced by some type of small stone or gravel depending on what is desired or available.

Gravel or Crushed Limestone

I prefer crushed 1 inch limestone. It is the most economical option in my area. Pea Gravel or some other type of small stone can work just as well. The limestone or gravel is placed in the trench on top of the perforated Drainpipe 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 Drainpipe 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. It is a good practice to always install a Trench Liner.

Installing 4 Inch French Drain with trench Liner and pipe filter

The White Material is the Trench Liner. The black material is the Pipe Filter.

 

sidewalk channel drain

Channel Drain set in the Sidewalk

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 isn’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 limestone. 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.

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.

WHERE WE HAVE WORKED!

In 1993 we had no website.  I stuck little signs on the side of the road as advertisement.  I got my first Drain Installation work in March of 1993 in Norman.  It was in Brookhaven North of Robinson Street on the West side of I 35.

Over the years Oklahoma Drainage and Sprinkler Repair has installed all types of Drainage Systems in almost Every town in Central and Western Oklahoma.

The majority of our customers live in Oklahoma City, Norman, Edmond, Yukon, Mustang, Moore, Midwest City, Del City, Blanchard, New Castle, Yukon and Choctaw.

Oklahoma Drainage and Sprinkler Repair hasn’t been limited to those areas, however.  We have also installed French Drains, Surface Drains, Channel Drains, and Sump Pumps in many other cities.

Working Drainage Systems Installed by Oklahoma Drainage also reside in: Lawton, Duncan, Ardmore, Chickasha, Shawnee, Enid, Weatherford, Elk City, El reno and many other places.

If you live in any of these Cities or towns, we have installed a French Drain, Surface Drain, Channel Drain, or Sump Pump within 5 miles of your home.

Here is a description of other recent work.

A little bit North of Downtown Oklahoma City, Oklahoma Drainage installed a 6-inch French Drain between two businesses which were less than three feet apart.  The French Drain went between a Law Firm and a Tire shop.  Water was leaking through the walls of both businesses.  Gutters between the two establishments were dumping a huge amount of water.  We installed a 6-inch French Drain between the gutters.

It took a long time to get the dirt out of the trench for the French Drain.  It was a very tight fit.  We had to use a little red wagon to haul out the dirt for the French Drain and haul back in the crushed limestone for the French Drain.  It looked a little silly, but it was the only thing we could find that was narrow enough to fit between the buildings.  A French Drain that normally would take 1 day to install took three.


Oklahoma Drainage and Sprinkler Repair has been installing French Drains in Newcastle since 1993.  We have helped over 4000 customers in Central and Western Oklahoma.
We install: French Drains, Surface Drains, Channel Drains and Sump PumpsSprinkler Repair and Sod Installation are Also Available.

Oklahoma City French Drain Installation

 

Installing Limestone on top of a 4 inch French Drain

Installing Limestone on a French Drain

Drainage System Installation in Norman

Drainage System Installation in Norman

 

Drainage Systems can be made up of several types of Drains including French Drains, Surface Drains, or Channel Drains.  The following information focuses on Drainage System Exit PointsOklahoma Drainage and Sprinkler Repair uses Curb Fittings or Pop-Up Emitters.

French Drains can be used in a variety of places and situations.  Typically a French Drain is intended to move a large volume of standing water away from the Problem Drainage Area to a predetermined exit point.  Once the standing water enters the French Drain, it flows downhill to the exit point.  The water is then released at the exit point by a Drainage Curb Fitting or a Drainage Pop-Up Emitter.

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

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.

Pop-Up Emitter

Pop-Up Emitter

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

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

 

 

Do you have water standing in the WRONG place when it rains?  Is water standing – Up against your fence – On your driveway – In your yard – Or worst of all – Seeping into your House?

Oklahoma Drainage can help!  We will Diagnose the problem and design a DRAINAGE SYSTEM JUST FOR YOU.

We install: French Drains, Surface Drains, Channel Drains, Trench Drains, Basement Drains, Basin Drains, and Sump Pumps.

Recently Oklahoma Drainage and Sprinkler Repair Installed a French Drain as part of a Drainage System in Mid West City Oklahoma.

Our customer had a back porch Sun Room.  Every time he had a hard rain, Water would run in one door and out the other.  An indoor creek across his Sun Room.

We installed a French Drain in front of the South Door.  It was 26 feet long and ran from a gutter downspout which it was connected to,  in front of the South Door and along the house covering the entire “Low” Area.  Then we connected 4 inch ADS Solid Drain pipe to the French Drain and ran down hill around the corner of the house to the street.

Once the 4 inch solid drain pipe was connected to the French Drain and the two gutter down spouts, a pop-up emitter was installed to release the water at the street.

The next step was to cover the drain pipe with dirt and put the sod back in place on top of the pipe.   There was about 8 wheelbarrows of dirt left over that was displaced by the drain pipe and the French Drain.  The extra dirt was scooped up and hauled away.

While installing the drainage system, it was necessary to move two sprinkler heads that were in the way of the drain pipe installation.  This was no problem.  Installing drainage systems and French drains for folks who have a sprinkler system is very common.  Moving Sprinkler heads or pipes sometimes is necessary.  We always leave the sprinkler system in complete working order and we discuss any changes in the sprinkler system with the customer before we do it to make sure that everyone is on the same page.  In most cases the customer cant tell that we made any changes to the sprinkler system at all.

connecting gutter to French Drain

Connecting Gutter to French Drain

French Drain Photos and information

French Drain gravel

Oklahoma Drainage – On the Job since 1993 – Servicing Western and Central Oklahoma

Stepping stone french drain

Stepping Stone French Drain

French Drain Potential

A Good Place For a French Drain

Servicing : Oklahoma City, Norman, Moore, Edmond, Midwest City, Del City, Yukon, Mustang, Purcell, or Blanchard.