How To Lay Out Septic Tank Drainage? (Perfect answer)

  • You will need to dig either four two-foot long trenches or two 50-foot trenches for a 1,000-gallon septic tank. Each trench should be three to four feet wide and equally deep. Make your trenches so they tilt downward slightly, but no more than a 1/4-inch incline for every eight feet you have.

How do you build a septic tank drain field?

How to Build a Septic Drain Field

  1. Step 1: Do Your Research.
  2. Step 2: Determine Soil Drainage/Absorption.
  3. Step 3: Locate Underground Utilities.
  4. Step 4: Dig Drain Field Trenches.
  5. Step 5: Add Gravel and Perforated Pipe.
  6. Step 6: Add More Gravel.

How far should drain field be from septic tank?

Common guidelines require at least 50′ clearance distance between a well and a septic system tank or 150′ between a well and a septic drainfield or leaching bed but you will see that different authorities may recommend different distances. Local soil and rock conditions can make these “rules of thumb” unreliable.

How deep should septic pipe be buried?

On average, trenches should be around 12-24 inches-deep, and wide enough to house your pipe comfortably before filling it in with soil and sod.

How deep should leach drains be?

A standard leach line is considered to be three (3) feet wide and three (3) feet deep with a length as required.

How do I calculate the size of my septic drain field?

Drainfield Size

  1. The size of the drainfield is based on the number of bedrooms and soil characteristics, and is given as square feet.
  2. For example, the minimum required for a three bedroom house with a mid range percolation rate of 25 minutes per inch is 750 square feet.

What kind of pipe is used for septic drain field?

Corrugated pipe is typically used for drain fields. Septic systems use drain fields to treat the septic tank effluent for the removal of impurities and contaminants. The field is made up of trenches typically containing washed “drainrock” or gravel.

How far from the house should a leach field be?

Local codes and regulations that stipulate the distance of the septic tank from the house vary depending on the locale, but the typical minimum distance is 10 feet.

How far away from the house should a septic tank be?

Septic tanks are required to be at least 5 feet from the house, although most are between 10 and 25 feet away.

What can you put on top of a septic field?

Put plastic sheets, bark, gravel or other fill over the drainfield. Reshape or fill the ground surface over the drainfield and reserve area. However, just adding topsoil is generally OK if it isn’t more than a couple of inches. Make ponds on or near the septic system and the reserve area.

How long do septic tanks last?

A septic system’s lifespan should be anywhere from 15 to 40 years. How long the system lasts depends on a number of factors, including construction material, soil acidity, water table, maintenance practices, and several others.

How do I find my septic tank lid?

You can locate the lid of your septic tank by poking the ground every few feet with a metal probe. Lids can be buried up to a foot deep on average, so be sure to investigate any bumps that may indicate something is buried underneath.

How far underground is a leach field?

A typical drainfield trench is 18 to 30 inches in depth, with a maximum soil cover over the disposal field of 36 inches.

How much fall should a leach line have?

In a conventional gravity system, the pipe from the house to the septic tank, and the outlet pipe from the tank to the distribution box or leach field, should both slope downward with a minimum slope of 1/4 in. per ft. (1/8 in. per ft.

Can you bury a leach field?

Drain fields are made by laying a series of perforated pipes into a gravel bed. Generally, a finished bed contains 12 inches of gravel below the pipe and another 2 inches on top. The field is then backfilled with 18 to 30 inches of soil to finish the bed and bring it even with the surrounding ground.

How to Install a Septic System

Documentation Download Documentation Download Documentation In rural regions of the nation where waste water treatment is not accessible, private on-site wastewater treatment systems (POWTS), also known as septic systems, are utilized largely to treat waste water. Gravity fed/conventional systems are divided into two broad categories: 1. gravity fed/conventional systems and 2. alternative (pump) systems, which include aerobic treatment units (ATUs.) In most cases, electric pumps are used in alternative systems.

However, in many health jurisdictions across the United States, it is still feasible for an individual property owner with heavy equipment operation skills to utilize a backhoe to establish a septic system on their land.

Steps

  1. 1 Make a plan and design for your system. Performing a site survey and conducting a percolation (soil) test on the area where the POWTS is to be placed are both required initial steps in any septic system installation. In order to create a system, it is necessary to first gather information from surveyors and conduct a soil test. It is then possible to submit an application for the necessary permissions and approvals.
  • The following are some of the conclusions from the site survey that have an impact on the design:
  • Available space
  • Terrain
  • Intended purpose and projected water demand depending on the size of the residence or building that the system will serve
  • Location of the well and/or nearby wells
  • And other factors.
  • The following are examples of soil test findings that have an impact on the design:
  • The soil type and layering (sand, clay, rock, and where it is placed in relation to depth)
  • The soil’s ability to drain and filter wastewater
  • And the soil’s ability to drain and filter wastewater
  1. 2Wait for clearance before proceeding. The system may be deployed once all of the relevant permissions and approvals have been obtained. Make certain that all of the steps listed below are carried out in accordance with all applicable laws, plumbing rules, and building codes. Advertisement

Please keep in mind that the following procedure assumes that the system is being installed for the first time and not as a replacement.

  1. 1 Assemble the equipment and tools that will be used throughout the dig. You will require the following items:
  • Backhoe, laser transit, and grade pole are all included. A 4″ Sch. 40 PVC pipe (and fittings, if necessary)
  • A 4″ ASTM D2729 perforated pipe
  • A 4″ASTM D3034 pipe and fittings
  • A 4″ Sch. 40 vent cap and test cap
  • PVC primer and adhesive
  • A 4″ Sch. 40 vent cap and test cap The following tools will be required: Saw (either hand saw or cordless reciprocating saw)
  • Hammer drill and bits (for drilling through walls if necessary)
  • The following items are required: hydraulic cement (to seal surrounding pipe if pipe is going through wall)
  • Shovel
  • Stone measuring an inch and a half and cleaned (amount varies depending on system size)
  • Tape measurements (both ordinary and at least a 100-foot-long tape)
  • Septic fabric (cut to 3′ length or less from a roll)
  • Septic tank and risers (concrete or plastic if allowed)
  • Riser sealant such as Con-Seal (for concrete) or silicone caulk (for plastic)
  • A septic filter (such as a Zoeller 170 or similar) if one is necessary
  • A distribution box (either concrete or plastic, if more than two laterals are being run)
  • And a septic tank.
  • 2 Determine the location of the entrance to the building in relation to the location of the septic tank. Make an excavation at least 2 feet deep and drill a hole through the wall, or go deeper and drill a hole beneath the footing, depending on your preference or the need. Because this is precisely what a gravity-fed system is designed to accomplish, expect the flow to continue to flow downhill from here. When transferring waste from the tank to the drain field, it does not employ any mechanical methods other than gravity.
  • The pipe should be 4″ Sch. 40 and should extend at least five feet outside the structure toward the tank, either through the wall or beneath it. Set it level where it will pass through a wall or under a footing, and from there, run it with approximately 1/8″ of pitch (slope) every foot of length toward the septic tank until it reaches the tank. If necessary, go even farther into the tank or all the way into the tank. If this is the case, switch to 4″ 3034 with the appropriate adaptor and pipe 3034 toward the tank.
  • Make sure you use a test cap on the end that will be entering the building. It is recommended that if you are going through a wall, you seal the area around the hole with hydraulic cement both inside and outside
  • Do not run too much pitch out to the tank. If there is an excessive amount, the water will run away quicker than the sediments, resulting in the solids remaining in the pipe. Additionally, depending on the depth of your drain field and how close it will be to the tank’s outflow, there may not be enough pitch to get to the drain field.
  • 3 Dig a hole large enough to accommodate the installation of the concrete aerobic tank below ground. Make use of the laser transit to “shoot” the top of the pipe that leads out to the tank with the laser. The distance between the top of the intake and the bottom of the tank is measured in feet and inches. To the number you fired off the top of the pipe, add this (go up on the grade pole) + 1 1/2″ to get the total. The depth of the grade pole has now been adjusted to the desired depth. Using this, continue to drill the hole to the desired depth
  • Prepare your leech field by laying it out and excavating it according to the results of the test performed during the permit application procedure. Maintaining a good flow between the tank and the drain field should be considered when planning out and digging the tank.
  1. 4Use “inch-and-a-half cleaned drain rock” from a neighboring gravel dump to surround the pipe, which is required in most areas. This is necessary in order to keep the pipe stable. For further information on the size of embedment and gravel required, check with your local health department. Five-inch perforated pipe in a gravity drain field does not have a slope from one end to another and has capped ends
  2. Once you have received a green sticker from the health inspector, you must cover the pipe and tank. All places, subject to the restrictions of the local health authority, will be required to cover the drain rock with a specific filter fabric, newspaper, four inches of straw, or untreated construction paper before backfilling. Advertisement
  1. A pump chamber after the septic tank should be installed The pump chamber, also known as a pressure tank or dosing tank, is where the electric pump is housed, which is responsible for transporting wastewater from one location to another and finally into the drain field for final disposal.
  • Set up the pump chamber in the same manner as you would a septic tank. The effluent pump and floats are housed in the pump chamber, and they are responsible for pumping the effluent out to the drain field at predetermined or scheduled intervals. This is a hermetically sealed system. To ensure that the electrical installation complies with state standards, it is frequently necessary to hire a qualified electrician. It is important to remember that in places with high groundwater, the pump chamber or additional ATUs may remain essentially empty for long periods of time, and that these tanks may need to be safeguarded from floating by the installation of additional weight or other protective features.
  1. Secondly, all construction details, including the layout of all sewers outside of the home, the location and depth of all tanks, the routing and depth of pressurized effluent lines, and other system components, such as the drain field and any additional ATUs, must be consistent with the septic system plans approved by the local county health department. Cover the tank and pressurized lines once the inspector has given his final clearance and the system has been turned on. Advertisement

Create a new question

  • Question I had a tank put, but it isn’t level with the ground. What will be the ramifications of this, and should it be leveled? It is necessary to keep the tank level. It is difficult to predict what it will have an impact on because we do not know which direction it is off level. Question Is it necessary to be concerned about tree roots growing into the drainage area when using a gravity flow kind of tank? Whether or whether you have lateral lines is dependent on the kind of trees that are growing close or above them. Tree species that tend to extend roots into the lateral lines and obstruct them are known as ramifications. Due to the fact that they are buried deep in the ground and surrounded by a pocket of gravel that allows waste water to drain out, they are rarely affected by grass, weeds, and shrubs. Question What is the maximum depth that a pipe may be lowered into the leech bed? The majority of systems require 12 volts “in the form of rock The perforated pipe should be suspended in the top area of the rock
  • It should not be touching the rock. Question Maintaining a lush green grass on or above your pitch is it safe, or is it a good practice? According to what I’ve heard, brown or dead grass is preferred so that your field can breathe more easily. It is necessary for your field to take a breath. The presence of green grass across your field indicates that it is functioning well. With lush grass covering your field, it will be able to breathe. There should be no planting of woody shrubs or trees over the leach field. Question What is the recommended distance between the septic tank and the house/boundary? A minimum of fifty feet is required. States have different laws, but this is the most common distance
  • Nonetheless, other states have stricter laws. Question What is the average amount of soil that goes into a residential leach field? It is dependent on how chilly it becomes. There are no less than 12 in the northern United States “in the leach field’s surface
  • Question Is it possible to build a septic system during the cold months? What you should do will depend on whether or not you reside in a place where the ground freezes. Question What amount of water should I put in the tank to get it going? None. A typical tank holds 1,000 gallons and will fill up quite quickly if used on a regular basis. When liquid effluent is discharged to the drain field, the goal is to catch and pre-treat particles that have accumulated. It is possible that a pump system will require water to prime the pump. Question There is a misalignment between my septic field’s underground line and the pipe on the tank. Is it OK to utilize a 90-degree elbow on my septic tank? As long as you have decent downhill flow, you should be fine. Instead of using a 90, I would use two 45s. Question If I’m installing a septic system, when should I contact an inspector? Immediately following system installation but before earth is used to cover the system in place Always check with the inspector ahead of time to verify that they can satisfy your inspection needs
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  • The use of aerobic bacterial additions (which are available at most DIY stores) to maintain a healthy and well functioning system, as suggested by producers on a periodic basis, is contentious. The septic tank is an anaerobic (wet) environment in which the majority of yeasts and other additions will have little or no effect on the sewage being processed. When it comes to installing septic tanks, some old school installers believe that placing an additive, a shovel of muck, or even a dead cat in an empty tank will “start” the process. What naturally enters the tank serves as the only thing that is necessary. The aerobic (wet or dry) component of the system consists of hundreds of square feet of drain field, where additives will do little help even if they make it all the way to the end of the system. The use of chemicals in septic systems has not been the subject of an independent research that has been published in a respectable scientific publication anywhere in the world, including this nation. This will mostly certainly be confirmed by your local health department. Each phase of the building process will almost certainly include an examination by a health inspector before the work can be completed or covered up. On pressurized lines, the use of a sand embedment is recommended in order to reduce the amount of damage caused by moving soil that has a high concentration of clay. When pumps are turned on and off, pressurized lines might move as well. Four inches (10.2 cm) of sand bedding on all four sides of the lines will prevent sharp pebbles from the ground or backfill from wearing holes in the pipe over time
  • And

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  • Keep the perforated pipe for the leech field in a vertical position while installing it to avoid having the holes in the pipe turn downward. It is necessary to lay the perforated drain field pipe ASTM 2729 dead level, so that the printed line on the pipe is facing up. The perforations on both sides of the pipe are on both sides of the pipe. All of the sections of perforated pipe are cemented together, and the ends of each leach line are capped to complete the installation. So, when waste water enters the pipe, it will fill the pipe to the height of the perforations and overflow from ALL of the holes, utilising the whole leach field as a means of treatment. In certain health authorities, you can utilize waste water to water grass or decorative plants, trees, vegetable gardens, and fruit trees if you place the perforated pipe on a slope. However, the water must first be cleaned by the system (tertiary treatment includes disinfection) in order to prevent pathogens (germs) from the septic system from being discharged into the environment throughout the process. Make sure to check with your local health authority to verify if the practice known as “reuse” is permitted in your community.

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Things You’ll Need

  • The following tools are required: backhoe tractor, trencher, shovel, contractor’s laser level and rod, or a surveyor’s transit. Septic tanks
  • PVC pipe with perforations
  • Material for embedding
  • PVC adhesive, PVC fittings, and a septic tank outlet filter are all included. Hand saw
  • Course file
  • Sandpaper If necessary, effluent pumps and floats are installed. If an alternate system is used, a control panel is installed.

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Credit for the image: Panya /iStock/Getty Images Although it takes time to construct a septic drain field properly, the effort is worth it in the long run. Septic tanks have a lifespan of 15 to 30 years. Drain fields, also known as leach fields, do not persist for very long periods of time, unfortunately. A drain field can survive up to ten years if it is installed in a well-drained location with excellent ground absorption. Drain fields can be divided into four portions of 25 feet each, or two sections of 50 feet each, depending on the layout you select for your drainage system.

Step 1: Do Your Research

To find out whether a permit is necessary for the installation of an aseptic field line or whether the health department must examine the drain field during construction or after it is completed, check with your local county office and health department for further information. It is almost always necessary to obtain a permit and have your property inspected.

Step 2: Determine Soil Drainage/Absorption

In order to assess the soil’s absorption capacity, dig a hole in it. Soil testing may usually be performed for a minimal price by the local Department of Agriculture office if you live in a rural area. A drain field should not be constructed in an area with poor drainage. A septic drain field should be located 10 feet away from the house or any body of water, as well as 10 feet away from gardens and edibles.

Step 3: Locate Underground Utilities

Before you begin digging, contact a utility finding provider to ensure that you do not accidentally cut any underground utility lines while digging. Spray paint or flags will be used to designate the ground above any lines that are drawn by the firm.

It is possible that you will be held accountable for the expense of restoring the cables if the lines are not clearly designated and one or more of them are severed because you did not have them marked.

Step 4: Dig Drain Field Trenches

It is recommended that each drain-field trench be at least 3 to 4 feet broad and 3 to 4 feet deep. For a 1,000-gallon septic tank, there should be at least 100 feet of drain field. This can be performed by digging four 25-foot-long trenches or two 50-foot-long trenches, as appropriate. Each 8 feet of pipe should be placed in a trench with a modest downward inclination of no more than 1/4 inch per foot of pipe. A downhill slope that is too steep might result in drainage issues since the waste could pool at the end of the trench.

Step 5: Add Gravel and Perforated Pipe

Fill in the trench with a thick layer of gravel that is at least 1 foot deep and extends the length of the trench. It would be preferable to have one and a half feet of gravel. Place a perforated pipe into the trench on top of the gravel and join the pipe to the septic tank drain using a clamp.

Step 6: Add More Gravel

Another half-inch of gravel should be placed on top of the perforated pipe, with additional gravel placed around the edges. Septic fabric should be placed over the gravel to prevent loose dirt from entering into the rocks. Backfill the trench with the dirt that was previously taken from the trench by raking it up and into the trench. Approximately a week later, once the earth has had a chance to settle a little, pile some additional dirt on top of the trench in order to elevate the level of the soil until it is equal with the surrounding ground and to prevent rainfall from gathering in the depression.

How to Install Drain Pipes for a Septic Tank Yourself

Home-Diy Installing a septic tank is often done by a professional who has access to the necessary equipment. A concrete septic tank can weigh several thousand pounds, and the ordinary homeowner does not have the necessary tools to safely install it in the ground. if (sources.length) then this.parentNode.removeChild(sources); else this.onerror = null; this.src = fallback; if (sources.length) then this.parentNode.removeChild(sources); else if (sources.length) then this.parentNode.removeChild(sources); else if (sources.length) then this.parentNode.remove ‘/public/images/logo-fallback.png’) is a fallback logo image.

A concrete septic tank can weigh several thousand pounds, and the ordinary homeowner does not have the necessary tools to safely install it in the ground.

  • The following items are required: Shovel (backhoe is recommended)
  • Tape measure
  • Gravel
  • Rake PVC perforated pipe
  • PVC pipe cleaner
  • PVC pipe cement PVC pipe cleaner
  • Geotextile material
  • Hacksaw

Warning

Large bushes or trees should not be planted directly over drain lines.

  1. Inspect your property and get a percolation test performed. In most cases, you will need a copy of the perc test results in order to acquire a permit to build a septic system in your home. In order to assess how quickly the soil absorbs water, a perc test will be performed on your site by a licensed specialist on your behalf. The results of this test will be used to calculate the quantity of drain line that will be required for your system. Drain lines should be measured and marked out before installation. You can divide this down into many lines, but each line must be the same length, and there must be a minimum of six feet between each line in order to be considered complete. Prior to digging, mark the beginning and ending locations of each line, double-checking all measurements to ensure they are accurate. Dig each drain line to a depth of 30 inches and a width of 24 inches. However, while a pick and shovel may be used to do the task, a backhoe can complete it in a fraction of the time and with less strain on your back. To make the trenches as flat as possible, remove any large boulders or roots that may have accumulated in them. Each of these lines will be served by a pipe that will go from the distribution box to it. This is the location where the pipe from the distribution box enters the ditch and marks the beginning point of your drain line. Fill each drain line with gravel until it reaches a depth of 12 inches. Spread gravel over the area to be covered with drain pipes and smooth it up with your rake. Install a 4 inch PVC perforated pipe on top of the gravel to provide drainage. This pipe will be connected to the pipe that comes from the distribution box and will run the whole length of the drain line to connect to the drain. Pipe cleaner should be used to clean each pipe junction before applying pipe cement. Before continuing, double-check that all of the fittings are in place. To finish covering the drain lines, continue to pour additional gravel into the system until the pipes are covered by roughly 1 to 2 inches of material. Using a rake, smooth out the gravel. A layer of geotextile material should be rolled out to cover the whole length and width of the drain line in order to prevent dirt from filtering into the drain lines and to aid in keeping roots out of the drainage system. The drain lines should be backfilled somewhat to allow for some small mounding to compensate for the settling that will occur. Grass seed should be planted on top of drain lines to aid in the absorption process and to avoid erosion.

The Drip Cap

  • Installing a septic tank is often done by a professional who has access to the necessary equipment. A concrete septic tank can weigh several thousand pounds, and the ordinary homeowner does not have the necessary tools to safely install it in the ground. Dig each drain line to a depth of 30 inches and a width of 24 inches. Ensure that any large rocks or roots are removed from the trenches, and that the foundation is as level as possible
  • Fill each drain line with gravel until it reaches a depth of 12 inches. In addition, this pipe will link to the pipe that comes from the distribution box and will run the whole length of the drain line.

How to Make a Septic Tank Drain Field

To fully functionally and efficiently operate a septic tank on your property, you will require a septic tank drain field, which is also known as a leach field or a leach drain, in addition to the tank itself. While all septic tank drain fields must be inspected on a regular basis, you may save a significant amount of money by excavating your own.

Step 1 – Choose Your Site

The site should be distant from the home but near to the tank, as this will be your primary focus.

There should be at least 10 feet between your edible garden and any bodies of water, including a lake or river or an irrigation well.

Step 2 – Contact the Authorities

Check to see whether you need a permission to construct the septic tank drain field, or if you need to have the site inspected before you begin construction. It takes a lot of effort to dig a field, but it is far more difficult to have to remove it and start over. Before beginning this project, double-check that all applicable rules and regulations have been met.

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Step 3 – Make Sure the Soil is Appropriate

Even though it is not essential, it is recommended that the soil in the region be evaluated. The absorption capacity of the system will be insufficient, and you will have difficulties with backups. It’s best to find out this information before you start digging. Submit a soil test sample to your local extension office, or pick up a soil test kit from this location.

Step 4 – Start Digging

Even though it is not essential, it is recommended that the soil in the region be evaluated. The absorption capacity of the system will be insufficient, and you will have difficulties with backups. It’s best to find out this information before you start digging. Submit a soil test sample to your local extension office, or pick up a soil test kit from this location.

Step 5 – Place Gravel

If you haven’t already, you should place at least 1-1 1/2 inches of gravel down the bottom of each trench once it has been dug. This allows for drainage to take place beneath the pipe.

Step 6 – Add the Pipe

Place the pipe from the septic tank all the way down the length of every trench. In order to prevent the pipe from shifting and becoming misaligned at the septic tank outflow, use clamps to secure it in place.

Step 7 – Add More Gravel

Afterwards, fill the trench with another one to three inches of gravel and let it to work its way down around the pipe until the pipe is completely covered with gravel.

Step 8 – Add the Cloth

Afterwards, fill the trench with another one to three inches of gravel and let it to work its way down around the pipe until the pipe is completely covered with gravel.

Step 9 – More Dirt

As soon as you are through with the pipe and gravel, the following step is to fill the rest of the trench with earth, making sure that your field is level with the surrounding terrain. After the earth has settled, you will have to wait another two weeks. When the earth settles, you will most likely need to add additional soil to your field in order to level it.

Step 10 – Plantings (Optional)

There are various plants that will thrive in a septic tank drainage field, preventing it from becoming an eyesore in the process. Keep in mind that you will not be able to aerate or till the soil. Additionally, you are not permitted to add more than two to three inches of top soil. Japanese surge, carpet bugle, periwinkle, Irish moss, and various strains of wildflowers are examples of plants that require minimal water and have shallow root systems, and they may be used in containers or in the garden.

Depending on where you live, the law may require you to have this test performed by a licensed professional or agency on your behalf.

You will have a backup problem in the tank if the septic tank drain field is placed incorrectly, which is in addition to the potential legal difficulties. When you make a purchase after clicking on one of our affiliate links, we may get a commission at no additional cost to you.

How to Run a Septic Tank Line From Your House

A septic system is made up of two lengths of pipe that are connected together. Initially, it runs from the house, where the system services are located, to a tank, where the waste is separated and solids settle out. The second section runs from the tank to the drainage field, where fluids from the tank are dispersed into the earth underneath the tank. The process of installing the first run of pipe is quite similar to that of installing a traditional sewage line. It is necessary to maintain a downhill slope to the storage tank.

Locating the Septic Tank

The tank serves as the nerve center of the septic system. It is required to be situated between the residence and the drainage field. Each and every septic installation must begin with a soil test, and depending on the results, soil conditions may necessitate the placement of the tank in a less-than-ideal site for digging sewer lines. Also required are minimum setback distances from property borders, functioning wells, surface water and other obstructions to provide a safe working environment.

Tank Depth

When it comes to septic systems, the tank is at their core. It must be placed in the vicinity of the home and the drainfield. Each and every septic installation must begin with a soil test, and depending on the results, soil conditions may necessitate the placement of the tank in a site that is less than ideal for digging sewer lines. Also required are minimum setback lengths from property borders, working wells, surface water and other obstructions such as trees and other vegetation. You must dig a deeper hole for the tank intake pipe since it slopes inward toward the tank.

Digging the Trench

The trench for the septic pipe should be dug before the hole for the tank since you will need a backhoe to complete the work and the tank will get in your way if it is already in the ground. To allow rainfall to drain properly, the pipe should be placed on a 2- or 3-inch bed of drain rock, so remember to account for this extra depth when digging. It is normal to use a four-inch pipe, and it should be installed far enough down to link with the main soil stack, which is a three-inch pipe that runs vertically past the main bathroom and through the roof of the home.

Precautions

Local building and health agencies will demand permits for a septic tank installation. You will also be required to submit a design plan before the permits will be provided, so prepare ahead of time. This layout should be developed in collaboration with a local builder who is familiar with the unique characteristics of the topography in your neighborhood. Stay away from planting trees or plants near the tank, drainage field, or any of the pipe systems.

They will be drawn to the pipes in their hunt for nutrition, and their roots will be able to successfully block them. You will be unable to use your septic system until the roots have been removed from the pipe. Removal may be both expensive and time-consuming.

How to Choose the Best Placement Location for Your Septic Drain Field – Brain Drain: Septic Services To Solve Your Problems

Using a septic system, wastewater from the residence is channeled through the main sewage line and into the septic tank, which is located underground. Microorganisms in the tank consume organic stuff while also separating solid waste from the water. Following that, the wastewater is emptied from the septic tank and onto a drain field or leach field, where contaminants in the wastewater are cleaned by bacteria. Following that, the effluent is sent via various perforated pipes in order to be treated.

  • As you can see, a drain field is an essential component of your household sewage system.
  • Select a location with a low elevation.
  • Now, if at all possible, locate a low-elevation region that is immediately below the septic tank so that gravity can drive the wastewater to the leach field and away from the house.
  • The cost of septic system installation will rise as a result of this option.
  • Choose a previously unoccupied space.
  • It is possible for plants to grow on this drainage area to clog the perforated pipes, causing wastewater to flood the drain field or to back up into your sinks, toilets, and other fixtures.
  • Choosing a location at the far end of the property might be a wonderful alternative if you want to avoid future development initiatives from being hampered.
  • When it comes to creating a leach field, the size of your home will be a major consideration.
  • Overloading the system as a result of building a smaller leach field than you require will result in floods and plumbing issues.
  • Alternatively, you can pump the tank on a regular basis to keep it operating at peak functionality.

How Your Septic System Works

Underground wastewater treatment facilities, known as septic systems, are often employed in rural regions where there are no centralized sewage lines. They clean wastewater from residential plumbing, such as that produced by bathrooms, kitchen drains, and laundry, by combining natural processes with well-established technology. A conventional septic system is comprised of two components: a septic tank and a drainfield, often known as a soil absorption field. It is the septic tank’s job to decompose organic matter and to remove floatable stuff (such as oils and grease) and solids from wastewater.

Alternate treatment systems rely on pumps or gravity to assist septic tank effluent in trickling through a variety of media such as sand, organic matter (e.g., peat and sawdust), constructed wetlands, or other media to remove or neutralize pollutants such as pathogens that cause disease, nitrogen, phosphorus, and other contaminants.

Prior to discharging wastewater into the environment, several alternative systems are designed to evaporate or disinfect the effluent.

Specifically, this is how a typical conventional septic system works:

  1. All of the water that leaves your home drains down a single main drainage pipe and into a septic tank. An underground, water-tight container, often composed of concrete, fiberglass, or polyethylene, serves as a septic system’s holding tank. Its function is to retain wastewater for a long enough period of time to allow particles to sink to the bottom and form sludge, while oil and grease float to the surface and produce scum. Sludge and scum are prevented from exiting the tank and moving into the drainfield region by compartments and a T-shaped outlet. After that, the liquid wastewater (effluent) exits the tank and flows into the drainfield. The drainfield is a shallow, covered hole dug in unsaturated soil that serves as a drainage system. Porous surfaces are used to release pretreated wastewater because they allow the wastewater to pass through the soil and into the groundwater. In the process of percolating through the soil, wastewater is accepted, treated, and dispersed by the soil, finally discharging into groundwater. Finally, if the drainfield becomes overburdened with too much liquid, it can flood, causing sewage to flow to the ground surface or resulting in toilet backups and sink backups. Finally, wastewater percolates into the soil, where it is naturally removed of harmful coliform bacteria, viruses, and nutrients. Coliform bacteria are a kind of bacteria that may be found in the intestines of humans and other warm-blooded animals, with humans being the most common host. As a result of human fecal contamination, it is a sign of this.

The Guadalupe-Blanco River Authority has built an animated, interactive model of how a residential septic system works, which you can view here.

Do you have a septic system?

It’s possible that you’re already aware that you have a septic system. If you are not sure, here are some tell-tale symptoms that you most likely are:

  • You make use of well water. In your home, the water pipe that brings water into the house does not have a meter. In the case of a water bill or a property tax bill, you will see “$0.00 Sewer Amount Charged.” It is possible that your neighbors have a septic system

How to find your septic system

You can locate your septic system once you have confirmed that you have one by following these steps:

  • Taking a look at the “as constructed” drawing of your house
  • Making a visual inspection of your yard for lids and manhole covers
  • Getting in touch with a septic system service provider for assistance in locating it

Failure symptoms: Mind the signs!

A bad odor is not necessarily the first indicator of a septic system that is failing to work properly. Any of the following signs should prompt you to seek expert assistance:

  • Water backing up into the drains of homes and businesses
  • It is especially noticeable in dry weather that the drainfield grass is bright green and spongy. The presence of standing water or muddy soil near your septic system or in your basement
  • A strong stench emanating from the area surrounding the septic tank and drainfield

How to Install a Septic Tank with Drain Line

It is discussed in this article how to set up a septic tank with a drain line. A three-compartment septic tank is covered in detail in this project, which includes all of the processes required to complete the installation. This septic tank has adequate capacity to accommodate 4-6 people, making it an excellent choice for most households. Even if the installation is straightforward, you will need to rent a mini-excavator or, ideally, a backhoe digger to do the job properly. It is important to exercise caution when using detergents, disinfectants, or other acid cleansers since they will interfere with the operation of the bacteria that decompose the waste materials.

A simple explanation for how the system works is that the majority of the trash is transformed into sewage water.

Every two years, you will be required to remove the solids from the system.

The water will then be able to seep into the soil through the gravel layer.

Made from this plan

The construction of the sewage lines from the home to the site of the septic tank is the first step in the project’s development. Excavate the trenches such that the pipes have a 1/8 inch dip each foot of excavation. The pipes must be placed on a bed of sand and then completely covered with sand. The sand will protect the pipes, and it will also serve as an excellent marker for future operations, should it be necessary to dig further trenches. Decide on the position of the septic tank and mark the area with a marker.

  1. Furthermore, the depth of the hole will be decided by the size and placement of the septic tank as well as the location of the sewage line.
  2. We also employed a dumper truck to remove the soil from the site.
  3. Make certain that the sewer pipe has a 1.5 percent slope when it is installed.
  4. We relocated the septic tank with the help of a backhoe digger after securing it with a heavy-duty strap and moving it.
  5. Check to verify that the septic tank intake is compatible with the sewer pipe.
  6. We used a spirit level to ensure that the tank was upright during the installation.
  7. Sand should be poured around the tank.
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If you do not fill the tank with water, it will collapse due to the weight of the earth on top of the container.

We will not be constructing a drain field for this project, but rather an 80-foot-long trench.

You may either construct two 40-foot-long trenches or a wide surface area and install three 25-foot-long drain pipes on it.

We connected the header pipe to the septic tank, ensuring that it had a 2 percent slope to prevent backflow.

Because it will move quite swiftly, using a backhoe digger is highly recommendable.

Trenches should be filled with gravel to the point where the drain pipe (which is normally 4′′ in diameter and perforated) has a 1/8′′ per foot slope.

Using a 4′′ layer of gravel, cover the drain pipe and make sure the surface is level.

Geothextile cloth should be used to cover the trench.

Because the fabric prevents the pebbles from becoming mixed with the soil and clogging the drain pipe, it is effective.

At the end of the drain pipe, you must add a vent pipe to provide for proper ventilation.

This also allows for simple access to the drain pipe in the event that it has to be cleaned.

We moved the earth that we had dug back into the trenches with the use of the backhoe’s front loader bucket and a rake.

First and foremost, you must connect the riser to the septic tank.

In order to have easy access to the tank for maintenance and inspection, the top of the riser should be slightly above the level of the surrounding ground.

These sheets are thin and rather stiff, despite their small weight.

As a result, you must first cover the tank with these sheets, followed by a 4′′ layer of dirt on top of that.

The polystyrene sheets must be covered with dirt once they have been laid out on the ground.

Work carefully so that you do not harm the tank.

On the blog, you can also get a comprehensive guide on how to construct a concrete pump house.

Make sure to read the previous articles in the Brick House Construction Series to see what more is in store for you!

We appreciate you taking the time to read our article on how to construct a septic tank with drain line, and we encourage you to go through the rest of our projects. Please spread the word about our articles to your friends by using the social media sharing buttons.

Related Posts

  • Septic systems are used to dispose of waste from homes and buildings. Identifying the location of the septic tank and drainfield
  • What a Septic System Is and How It Works Keeping a Septic System in Good Condition
  • Signs that a septic system is failing include:

Septic systems, also known as on-site wastewater management systems, are installed in a large number of buildings and houses. It is easy to lose sight of septic systems, which operate quietly, gracefully, and efficiently to protect human and environmental health due to their burying location. Septic systems are the norm in rural regions, but they may also be found in a lot of metropolitan places, especially in older buildings. It is critical to understand whether or not your building is on a septic system.

Is Your Home or Building on a Septic System?

It is possible that the solution to this question will not be evident. If a structure looks to be connected to a sewage system, it may instead be connected to a septic system. It is fairly unusual for tenants to be unaware of the final destination of the wastewater generated by their residence. Some of the hints or signs listed below will assist in determining whether the facility is served by a septic system or whether it is supplied by a sewer system:

  • Answering this question may not be as straightforward as you may expect. If a structure looks to be connected to a sewage system, it might potentially be connected to a septic system instead! Most tenants are unaware of what happens to the wastewater from their residence, which is not unusual. It will be easier to detect whether or not a structure is equipped with a septic system or is serviced by a public sewer system if the following indications or signs are present:

All property owners should be aware of whether or not their property is equipped with an on-site wastewater treatment system. Georgia law mandates that the property owner is responsible for the correct operation of a septic system, as well as any necessary maintenance and repairs.

Locating the Septic Tank and Drainfield

Finding a septic system may be a difficult process. They can be buried anywhere in the yard, including the front, back, and side yards. After a few years, the soil may begin to resemble the surrounding soil, making it impossible to distinguish the system from the surrounding soil. It is possible that in dry weather, the grass will be dryer in the shallow soil over the tank and greener over the drainfield, where the cleansed water will be released, but this is not always the case, especially in hot weather.

  1. The contractor who built the house should have presented the initial owner with a map showing the tank and drainfield locations, according to the building code.
  2. The installation of the system, as well as any modifications made to it, would have been examined by your local health authority.
  3. Unfortunately, if the system is very old, any records related with it may be insufficient or nonexistent, depending on the situation.
  4. Look for the point at where the wastewater pipes join together if the building is on a crawlspace or has an unfinished basement.
  5. The sewer line that runs through the structure is referred to as the building sewer.
  6. To “feel” for the tank, use a piece of re-bar or a similar metal probe.
  7. If you use this free service, you may avoid accidentally putting a rod through your gas or water line.

Try to locate the tank after a rainstorm, when the metal probe will be more easily maneuvered through moist dirt.

This should be done with care; extreme caution should be exercised to avoid puncturing the building sewer.

A tank is normally 5 by 8 feet in size, however the dimensions might vary.

Be aware that there may be rocks, pipes, and other debris in the area that “feels” like the tank but is not in fact part of the tank.

However, it is possible to have the lid or access port positioned on a riser in addition to being on the same level as the top of the tank in some cases.

Once the tank has been identified, make a rough drawing of its placement in relation to the house so that it will not be misplaced again!

It may be easier to discover the drainage lines now that the tank has been identified, particularly if the area has been subjected to prolonged periods of drought.

How a Septic System Works

Typical sewage treatment system (figure 1). It is composed of three components (Figure 1): the tank, the drain lines or discharge lines, and the soil treatment area (also known as the soil treatment area) (sometimes called a drainfield or leach field). The size of the tank varies according to the size of the structure. The normal home (three bedrooms, two bathrooms) will often include a 1,000-gallon water storage tank on the premises. Older tanks may only have one chamber, however newer tanks must have two chambers.

  1. The tank functions by settling waste and allowing it to be digested by microbes.
  2. These layers include the bottom sludge layer, the top scum layer, and a “clear” zone in the center.
  3. A typical septic tank is seen in Figure 2.
  4. It is fortunate that many of the bacteria involved are found in high concentrations in the human gastrointestinal tract.
  5. Although the bacteria may break down some of the stuff in the sludge, they are unable to break down all of it, which is why septic tanks must be cleaned out every three to seven years.
  6. In addition, when new water is introduced into the septic tank, an equal volume of water is pushed out the discharge lines and onto the drainfield.
  7. The water trickles out of the perforated drain pipes, down through a layer of gravel, and into the soil below the surface (Figure 3).
  8. A typical drainfield may be found here.
  9. Plants, bacteria, fungus, protozoa, and other microorganisms, as well as bigger critters such as mites, earthworms, and insects, flourish in soil.
  10. Mineralogical and metallic elements attach to soil particles, allowing them to be removed from the waste water.

Maintaining a Septic System

The most typical reason for a septic system to fail is a lack of proper maintenance. Septic systems that are failing are expensive to repair or replace, and the expense of repairs rests on the shoulders of the property owner (Figure 4). Fortunately, keeping your septic system in good working order and avoiding costly repairs is rather simple. Figure 4. Septic system failure is frequently caused by a lack of proper maintenance. It is in your best interests to be aware of the location of the system, how it operates, and how to maintain it.

  1. You should pump the tank if you aren’t sure when the last time it was pumped.
  2. It is not permissible to drive or park over the tank or drainage field.
  3. No rubbish should be disposed of in the sink or the toilet.
  4. It’s important to remember that garbage disposals enhance the requirement for regular pumping.
  5. When designing a landscape, keep the septic system in mind.
  6. It is also not recommended to consume veggies that have been cultivated above drainfield lines (see Dorn, S.
  7. Ornamental Plantings on Septic Drainfields.

C 1030).

Any water that enters your home through a drain or toilet eventually ends up in your septic system.

Don’t put too much strain on the system by consuming a large amount of water in a short period of time.

Additives should not be used.

Various types of additives are available for purchase as treatment options, cleansers, restorers, rejuvenator and boosters, among other things.

To break up oil and grease and unclog drains, chemical additives are available for purchase.

Pumping out the septic tank is not eliminated or reduced by using one of these systems.

They remain floating in the water and travel into the drainfield, where they may block the pipes. Acids have the potential to damage concrete storage tanks and distribution boxes.

Signs a Septic System is Failing

A failed system manifests itself in the following ways:

  • Sinks and toilets drain at a snail’s pace
  • Plumbing that is backed up
  • The sound of gurgling emanating from the plumbing system House or yard aromas that smell like sewage
  • In the yard, there is wet or squishy dirt
  • Water that is gray in hue that has accumulated
  • An region of the yard where the grass is growing more quickly and is becoming greener
  • Water contaminated by bacteria from a well

If you notice any of these indicators, you should notify your local health department immediately. An environmentalist from the health department can assist in identifying possible hazards. There are also listings of state-certified contractors available from the local health department, who may do repairs. Repairs or alterations to the system must be approved by the health department and examined by an inspector. Keep an eye out for any meetings that may take place between a health department inspector and a contractor to discuss repairs to your system.

  • Household garbage that has not been properly handled is released into the environment when systems fail.
  • It has the potential to pollute surrounding wells, groundwater, streams, and other sources of potable water, among other things.
  • The foul odor emanating from a malfunctioning system can cause property values to plummet.
  • Briefly stated, broken systems can have an impact on your family, neighbors, community, and the environment.
  • Septic systems are an effective, attractive, and reasonably priced method of treating and disposing of wastewater.

Figures 2 and 3 reprinted with permission from: CIDWT. 2009. Installation of Wastewater Treatment Systems. Consortium of Institutes for Decentralized Wastewater Treatment. Iowa State University, Midwest Plan Service. Ames, IA.

Please call your local health department if any of these indicators are observed. Environmental specialists from the health department can assist with the identification of potentially hazardous situations. Local health departments also maintain lists of state-certified contractors who are available to carry out repair work if needed. Health department approval and inspection are required before any repairs or alterations are made to the system. Keep an eye out for any meetings that may take place between a health department inspector and a contractor to discuss the repairs to your system.

Household garbage that has not been properly handled is released into the environment when systems malfunction.

The contamination of surrounding wells, groundwater, streams, and other sources of drinking water is a serious threat to the public health.

Real estate prices might be affected by the foul smell emanating from a faulty system.

Briefly stated, broken systems can have negative consequences for your family, neighbors, community, and environment.

Septic systems are a cost-effective, environmentally friendly method of treating and disposing of wastewater that is efficient, attractive, and simple. They can safeguard and preserve both public and environmental health for many years if they are properly maintained.

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