How Do You Ancor A Septic Tank? (Solution)

  • Anchoring usually involves attaching the tank to a concrete weight. One common anchoring method is to install a reinforced concrete pad, from 6 to 12 inches thick, in the bottom of the tank hole. Straps connected to this pad are looped over the top of the tank.

How do you secure a septic tank?

In many cases, homeowners fail to cover their septic tanks properly and instead use unsecured lids and covers, which can be easily moved by children. Lids should tightly cover the tank opening and secured to prevent displacement by a child. Locking lids are the most secure and require a key or combination to open them.

How do you keep a plastic septic tank from floating?

How can you prevent this from happening?

  1. Fill the tank with water after it’s pumped to keep weight in the tank and prevent floating.
  2. Divert rainwater runoff away from your system.
  3. Avoid pumping the tank during wet seasons if there is a risk that the tank could float.

How many lids do septic tanks have?

A septic tank installed before 1975 will have a single 24-inch concrete lid in the center of the rectangle. A two-compartment tank installed after 1975 will have two lids of either fiberglass or polyethylene, centered at opposite ends of the rectangle.

Should a septic tank be exposed?

If You Have An Aerobic Septic System This type of system should be checked by a professional technician every 4 months, so the lids must be kept exposed and easily accessible.

Do concrete septic tanks float?

A precast concrete septic tank will never “float” to the surface as some lighter weight tanks can do in certain situations. With a specific gravity of 2.40, precast concrete septic tanks resist buoyant forces better than other septic tank materials.

Why do septic tanks float?

All tanks have the potential of being floated out of the ground due to forces acting on the tank in saturated soil. At the gas station, the tank hole was excavated into relatively solid or dense soil and then backfilled with a less dense material that will allow water to collect in the excavation.

Will a septic tank float out of the ground?

A septic tank may also float out of place if it’s pumped while the ground is flooded. This can damage inlet and outlet pipes. Your system does need to be pumped as soon as possible after the water table is lowered. Before this happens, don’t drive any machinery near the septic area to avoid compressing the soil.

Which is better concrete or fiberglass septic tank?

While concrete is known for its durability, fiberglass septic tanks are even more durable. Once buried, fiberglass tanks become completely inert. Unlike concrete, it won’t degrade, rust, or weaken. Fiberglass septic tanks also require less maintenance than concrete septic tanks do.

How do I connect two septic tanks together?

Use a 4-inch pipe to connect the two septic tanks. Place this pipe into the inlet hole of your new septic tank before you lower it into the ground. After you’ve lowered your new septic tank, insert the other end of the pipe into your old septic tank’s outlet hole.

How does a fiberglass septic tank work?

The tank is connected with two pipes – an inlet and an outlet. The inlet pipe is responsible for collecting wastewater in the septic tank, while the outlet pipe removes the pre-processed wastewater from the septic tank and distributes it uniformly in the soil and watercourses.

How much does it cost to pump a septic tank?

How much does it cost to pump out a septic tank? The average cost is $300, but can run up to $500, depending on your location. The tank should be pumped out every three to five years.

What to put in septic tank to break down solids?

Yeast helps actively breaks down waste solids when added to your septic system. Flush ½ cup of dry baking yeast down the toilet, the first time. Add ¼ cup of instant yeast every 4 months, after the initial addition.

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.

Keep Tanks Underground Where They Belong

When the fuel tanks at the gas stations were emptied, buoyant forces propelled the tanks through the soil and asphalt, bringing them to the surface of the ground. When a septic tank is not installed properly, the same issue might occur.

Interested in Septic Tanks?

Receive articles, stories, and videos about septic tanks delivered directly to your email! Now is the time to sign up. Septic Tanks and More Receive Notifications We talked about sewage tank installation practices three years ago, at an installer class that was held in conjunction with the California Onsite Wastewater Association. We stressed the necessity of preventing or identifying situations in which a tank may rise to the surface of the water. When the class reconvened after lunch, one of the participants inquired as to whether or not we had seen the tanks at the petrol station on the corner that had risen above the surface of the asphalt.

What we discovered is depicted in the photograph that accompanies this story.

The night before, many inches of rain fell, causing the water to overflow into the area where the tanks were to be built.

Installers and pumpers who do not exercise caution during system building or maintenance later on may also have this problem with their septic tanks.


In wet soil, all tanks have the potential to float off of their foundations due to the forces pushing on the tank from all directions. On site at the gas station, the tank hole was dug into a somewhat solid or thick earth and then backfilled with a less dense substance that will enable water to accumulate in the excavation while the tank was being filled. This is one of the reasons why it is important to make the excavation as small as possible; while installing the tank, be sure to backfill in layers and compress the fill material.

  • If the upward force (buoyant force) equals the weight of the water displaced by the tank and the weight of the tank and soil cover does not exceed the buoyant force, the tank will float.
  • This is exactly what occurred in this instance.
  • Consequently, the obvious question that the onsite expert should be asking himself or herself is: Do I need to calculate the buoyancy potential of tanks that I build or maintain?
  • As previously indicated, the most visible condition is seen in locations with high water tables or soil conditions that are seasonally wet throughout the rainy season.

It is possible for the condition at the service station to be caused by any soil condition that creates a restricting layer beneath the tank, decreasing the circulation of water. A limiting layer might be composed of deep soil layers, bedrock, or any other restricting layer.


The Installation of Wastewater Treatment Systems document from the Consortium of Institutes for Decentralized Wastewater Treatment (CIDWT) is a helpful resource for determining tank buoyancy potential. To determine the best practices for a specific product, an installer should consult the tank manufacturer as well as state and local regulations. Service providers pumping tanks in areas with high water tables, limiting conditions, or during periods of heavy precipitation should recognize that it is probably not a good idea to pump tanks dry and leave them.

  • As a result, if you are servicing tanks to alleviate pressure on the system during wet seasons, you will find yourself in an intriguing predicament.
  • We looked into our state’s tank installation regulations to see what they had to say about buoyancy.
  • During the installation process, there are numerous options for providing protection against a floating tank.
  • The first of these is the soil backfill material itself.
  • A roadway beneath the tank would offer additional counter-force due to the greater weight of the concrete or asphalt beneath the tank.
  • Please keep in mind the following two crucial points: With shallower tank installations, the quantity of backfill over the top is typically approximately a foot, which is frequently insufficient to offer appropriate protection on its own.
  • This information pertains to a specific product.


There are two more basic approaches that may be used to give this protection. They consist of the use of concrete deadmen or screw anchors, as well as the required strapping material, to secure the tank in position. Most manufacturers will have precise specifications for the straps, as well as for the size of the concrete deadmen and the number of straps that must be used, as well as for where the straps must be placed on the finished product. Sometimes concrete parking curbs or road barriers perform the function of dead men.

Screw anchors must also meet certain specifications, including how they are to be placed into the earth, among other things.

If a departure from the criteria is necessary, it should only be done under the supervision of a competent engineer, and the engineer should be consulted regarding how the variation was decided.

It is critical that the backfill be put in lifts and carefully compacted before finishing the job by mounding the backfill over the top of the tank to ensure appropriate drainage.

In the hope that this conversation may assist you in avoiding what can be an unpleasant and expensive scenario when an underground storage tank floats up to the surface. The majority of homeowners would never want to view their tank so close up and in person.

Methods to Prevent Septic Tank Floatation

When anti-floatation measures are required for a septic tank, there are a variety of options available. One of these is the usage of concrete in construction. Submerged concrete weights approximately 85 pounds per cubic foot when it is submerged. If concrete is submerged for anti-floatation purposes, the weight per cubic foot (85 pounds per cubic foot) is utilized to determine how much is required. The installation of a concrete collar over or around the tank is something that some designers stipulate.

  1. Another significant factor to consider is the method by which the concrete is secured to the tank.
  2. The design should include particular specifications on the materials, positioning, and connections if “dead man” parts are to be utilized in conjunction with strapping.
  3. Product designers and engineers at certain companies have included anti-floatation techniques into the design of their goods.
  4. Anti-floatation methods increase the amount of tension placed on the tank’s walls.
  5. It is imperative that the installer use extreme caution while picking equivalent components.
  6. The lid, sides, and bottom of concrete tanks must be constructed in such a way that they can withstand the increased forces that are applied to the tank.
  7. The tank bottom must be strong enough to withstand these stresses, or else the tank would collapse.
  8. Changing forces at the bottom of the tank will arise as a result of the variation in water level.
  9. A tank that is equal in capacity should never be chosen only on the basis of capacity when anti-floatation measures are to be implemented.
  10. a little about the author Sara Heger, Ph.D., is an engineer, researcher, and lecturer in the Onsite Sewage Treatment Program at the University of Minnesota’s Water Resources Center.
  11. She has presented at several local and national training events on topics such as the design, installation, and administration of septic systems, as well as research in the related field.

Send an email to [email protected] if you have any concerns concerning septic system care and operation. Heger will respond as soon as possible.

How Does a Septic Tank Work?

The majority of us are aware that septic tanks exist. If you’re like the majority of Americans, though, you may find yourself wondering, “How does a septic tank work?” when you actually think about it. That’s OK – unless you live in a rural region, flushing the toilet may be all you have to do in terms of wastewater treatment if you live in a city. However, if you live in a rural location or anticipate moving to one, you should get familiar with how a septic system works, how to maintain it, and how to recognize the indicators of a failing septic system.

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Where are Septic Systems?

The likelihood that you reside in a city or a suburban region increases the likelihood that you have a sewage system. In other places, like as rural areas, it would be too expensive to construct such a network of connections. As an alternative, everyone has their own self-sufficient septic tank to handle the waste generated by the house and yard. If you live in a neighborhood where the houses are divided and you are not near to an urban area, it is possible that you have a septic system installed!

A septic tank is a huge metal or concrete tank that may store up to 1,000 gallons of water.

The drain field is the location where the effluent from the tank is discharged.

Don’t worry, we’ll walk you through everything step by step as well.

How Does a Septic Tank Work?

To begin, all of the wastewater from the house is channeled into a primary drainage pipe. The water is channeled into the tank, which is positioned beneath the ground near the home. With the aid of microorganisms in the water, organic material in the wastewater separates over time inside the tank’s internal walls. Solid waste sinks to the bottom of the tank and solidifies as sludge, while oils and fats from the wastewater congeal on the surface of the water in the tank and solidify into scum.

  1. When the effluent is discharged from the tank, it is cleaner and free of solids than when it entered.
  2. There are t-shaped pipes that restrict material from leaking out of the tank at the top and bottom of the container.
  3. When the effluent is forced out of the tank, it enters a series of perforated pipes that are buried deep into the earth.
  4. The drain field can range in size from extremely large to extremely tiny.
  5. Compact or saturated soil will require a large amount of space, but dry and loose soil will require a considerably lower amount of space for the effluent.

What happens to the effluent once it has exited the field pipe? In the natural environment, bacteria breakdown any trash that remains in the water and function as a fertilizer. As a result, the grass in the vicinity of the septic tank is constantly greener!

Finding Your Septic System

There are a number different methods for locating your septic system. Manhole covers and lids are often seen in the yard above the septic tank, and they serve a variety of functions. Maintenance cover, which may be removed to allow for expert tank pumping, can be found here. They are rather large, spherical, and flat coverings that are difficult to notice. If you’ve ever discovered one in your yard, it’s likely that you have a septic system. Finding the drain field is another method to successfully locating the septic system.

Due to the fact that it would be a significantly greener stretch of grass, it will be difficult to notice.

Environmental Health Concerns

Septic systems have been utilized in place of sewage systems for many years and are still in use today. While you may be thinking, “Gross!,” consider this: Is it possible that the garbage is leaking into the ground? That can’t be good for you!” While this is partially correct, it is not totally accurate. It is the job of the septic system to keep as much nasty material out of the earth and into the tank as it possibly can. Most of the time, whatever comes out in the liquid effluent is completely harmless to the environment and just serves as fertilizer.

Because we have the lagoon, the ocean, and the river in Brevard County, it’s a significant concern there.

As a result, especially in our beautiful county, it is critical that our septic tanks are properly maintained!

Caring for Your Septic System

When you’re concerned about your septic system failing, there are a handful of things to keep an eye out for. The presence of sewage in drains and backed-up toilets are two of the most obvious signs that a septic system is having issues. Additionally, there should be no excess surface water or a foul odor in the vicinity of the septic tank — if there is, you should contact a professional immediately! Sometimes the remedy is straightforward: the indicators are informing you that the tank needs to be pumped.

  • A septic tank may continue months in a downswing without exhibiting many signs of collapse, and if you haven’t been taking care of your septic tank, it might cost thousands of dollars to repair or replace it altogether.
  • It is possible to have a decent tank for 30 years if it is properly maintained.
  • One, do not misuse cleaning agents, bleach, or other bio-degradable chemicals.
  • Do not flush anything down the toilet that does not disintegrate – or does not decompose quickly – number two.

In addition, don’t leave a vehicle or other heavy item parked on top of your septic tank! Over time, it will cause damage to the tank, which will cost more than a couple thousand dollars to replace.

Erupting, Floating Oil Tanks or Floating Up Septic Tanks

  • Send in your question or comment regarding why certain oil storage tanks and septic tank float up out of the ground, and how to avoid this problem in the future.

InspectAPedia does not allow any form of conflict of interest. The sponsors, goods, and services described on this website are not affiliated with us in any way. Tanks for storing oil on the water Floating septic tanks (also known as floating septic tanks): Flotation of underground oil tanks or sewage tanks is explained in this article, along with the implications for the property owner and how to prevent buried oil tank or septic tank flotation in the future. It may be necessary to install oil tank anchors in order to prevent empty tanks from floating up out of the ground.

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Why Buried Tanks Float Up out of the ground or up inside buildings during heavy rains or flooding

The photos at the top of this page, as well as this close-up, depict an ancient abandoned oil tank that has risen from its grave in a thicket beside a stream in New York. Recent rains and flooding in the surrounding region raised the water level over the surface of the earth, where an abandoned and underground tank had been dormant for decades. Due to the buoyancy of an empty tank, when water levels increased, it was able to raise itself completely out of the burial location where it had been buried.

  1. Oil is naturally lighter than water, but an oil tank or a septic tank that is in operation and full is unlikely to rise above the surface of a flooded field.
  2. Even a slight increase in groundwater levels can be sufficient to propel the tank upward through the earth.
  3. This will result in either an oil spill or a sewage disaster.
  4. Ideally, the tank would have been cut up and cleaned before being refilled with new sand.
  5. However, despite further rises in ground water or flooding, the fill should have kept the underground oil tank from coming to the surface.
  6. @Roger S, thank you for your comment.
  7. Please accept my sympathy.

Instead, we have a septic tank that was improperly installed at the time of construction: Plastic or fiberglass septic tanks are so lightweight that, unlike their concrete counterparts, they will float to the surface of wet soils during periods of heavy rain or flooding weather.

Those responsible for installing such tanks in locations where that occurrence is expected will use a mix of strapping as well as driven or buried anchors to secure the tank to the earth underneath the tank.

“The tank should be appropriately supported by a proper foundation or, if applicable, by its tie bolts, foundation anchors, or other supporting structure(s),” according to the New York DEC guidance at support guide.html.

The pumper is dealing with a buried tank, and she cannot see whether or not the tank has been strapped down or anchored, and she would not know the status of the tank unless the pumping company also served as the tank’s original installer.

Keep an eye out for: It is possible that some of these float-ups may be extremely dangerous, such as the explosion risk that may arise when an improperly-anchored underground liquid propane tank floats to the surface.

Other readers should be aware that almost ALL types of tanks, whether made of plastic, fiberglass, or steel, that have the potential to float up out of the ground in wet or flood circumstances require some form of certified and safe anchoring method.

Examples of Codes, Standards Requiring Anchors for Fiberglass, Plastic, Steel Tanks Underground

If the tank is being installed in an area where floods and the danger of tank floating-up are anticipated, the installer should use a combination of strapping and driven or buried anchors, or attach the tank to a concrete slab, to ensure that the tank is securely fastened. Some criteria for lightweight underground tank anchoring, as well as rules and standards, are listed below:

  • In addition to a solid foundation or, where necessary, tie bolts, foundation anchors, or other supporting structures, the tank must be adequately supported by additional supporting structures. The following is taken from the New York DEC guide: (10) In the case of septic tanks that have been built inside the ground water zone, they may be driven toward the ground surface during cleaning or dewatering activities. This is due to the buoyancy effect of the tank’s displaced volume, which causes it to rise. Septic tanks that are submerged in groundwater should be properly secured to prevent “floating.” Not all groundwater should be removed from septic tanks that have been put in groundwater and are not adequately anchored. Tanks made of fiberglass, plastic, or steel are more prone to float than reinforced concrete tanks due of their smaller weight per volume
  • Nevertheless, several lighter-weight tanks have developed excellent anchoring mechanisms to prevent floatation in their tanks. Installing a tank should be done in line with the manufacturer’s instructions. – source: New York Department of Health,RESIDENTIAL ONSITE WASTEWATER DESIGN HANDBOOK(2012), retrieved on 2021/06/27, original source:water/drinking/wastewater treatment systems/docs/design handbook.pdf, retrieved on 2021/06/27, original source:water/drinking/wastewater treatment systems/docs/design handbook.pdf, retrieved on 2021/06/27, original source” The foundations and supports are b. For foundations, only well graded and leveled surfaces with acceptable physical properties should be utilized
  • Otherwise, they should be avoided. Tank anchors should be installed to allow for the expansion and flexure of the tank
  • If the anchors are not properly fixed, fractures in the tank may develop. Installing flat-bottomed tanks on anything other than a smooth, level surface is not recommended. In most cases, manufacturers mention a variation from the normal level that varies according to tank size. It is important to check that the foundation is free of debris, and all installations must be performed in accordance with manufacturer’s requirements, if applicable. Where wind-loading estimates necessitate the use of tie-down bolts, they must be properly mounted using brackets or a steel girdle connected to the tank to ensure proper operation. When tanks are placed inside a flood plain, they must comply with all of the criteria of 6 NYCRR section 598.3 of the New York City Code.” PLASTIC OIL TANKS 5-YEAR INSPECTION PLAN is the source of this information. Deregulation of the New York State Department of Environmental Conservation (NYSDEC) (2007), NYSDEC, Five-Year Inspection of Plastic Tanks (DER-16), DEC Program Policy (2007) U.S. EPA,OIL TANK INSPECTION PROCEDURES – EPA(2014)SPCC Guidance for Regional Inspectors, December 16, 2013, Chapter 7, Inspection, Evaluation, and Testing – retrieved 2021/06/27 original source: U.S. EPA,OIL TANK INSPECTION PROCEDURES – EPA(2014)SPCC Guidance for Regional Inspectors, December 16, 2013, Chapter 7, Inspection, Evaluation, and Testing
  • U.S. This involves the inspection of tank anchoring systems, among other things. According to the U.S. Environmental Protection Agency’s SPILL PREVENTION, CONTROL, AND COUNTERMEASURE PLAN (SPCC) PROGRAM BULK STORAGE CONTAINER INSPECTION FACT SHEETTU.S. EPA, this is the EPA’s recommendation for the following U.S. federal regulation: 112.8(c)(6) and 112.12(c)(6)(i)- United States Environmental Protection Agency, obtained on 2021/06/27 original source:
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Dear Sir/Madame, I had my septic tanks drained out three days ago. I have two 500-gallon plastic tanks with an air pump, and now we have had five inches of rain, and the second tank has floated out of the ground because there was no water in it. Due to the fact that it was full of water, the first tank was OK; we’ve had more rain than this a few times previously with no problems, and the system is just 5 years old. They never advised me to fill the tank with water after pumping; in fact, I had no idea it was even possible!

  • No, I am not an expert on septic systems, but they are!
  • Thank you for any input.
  • There is nothing technically difficult about uncovering the top of an ancient tank, cutting an aperture if one is not already there, and filling the tank with stone rubble and sand, maybe after first breaking a drainage hole in the tank’s base.
  • Never work on your own.
  • In the meanwhile, keep everyone away from the area since a buried tank in an unknown state poses a safety danger.
  • Is it possible for me to fix this myself, or do I need to hire a professional?
  • Should I fill the tank with water until it reaches the baffle?
  • This is especially true if your septic tank is made of thin steel or lightweight plastic or fiberglass, and if the tank was not physically secured to the ground when it was placed, and if the soil is moist and the surrounding area is flooded, the septic tank may float up out of the earth.
  • Really?
  • If a septic tank has the potential to float up when it is first installed because it is empty, it has the potential to float up in the future after it has been in use and has been pumped out as part of routine, regular septic tank maintenance.

When it comes to septic tank construction and maintenance, the appropriate approach is to install the required anchors and not to refill the tank with water.

Risks of Structural or Mechanical Damage or Fuel Leak Contamination due to Floating-up Fuel Storage Tanks During Flooding At or In Buildings

Heating oil storage tanks that are full or almost full, whether they are located outdoors or inside, are less likely to rise up out of the ground or to move away from their moorings during floods in the surrounding region. If you are installing plastic or fiberglass storage tanks for gasoline or septic tanks, the installer can incorporate anchors to assist prevent the tanks from shifting during flooding. The installation of tank anchoring devices, on the other hand, is typically skipped by installers of larger steel storage tanks.

Furthermore, above-ground oil storage tanks, whether they are built outdoors or inside, are often installed with little more than gravity holding the tank in place on its legs.

Even if the tank itself is not destroyed, an oil spill is probable as a result of the movement, which will cause oil supply pipe lines and connections to become broken.

Julie Satow wrote in the New York Times (January 2013) that water induced by Hurricane Sandy (New York, 2012) resulted in basement flooding at the 88 Greenwich complex.

Reader CommentsQ A

Our septic tanks were being set up at the time. They were not held down and were not filled with water, and as a result of the increasing water table caused by the rain, they have now sailed away. What should be done in this situation? Is it necessary to completely uninstall and reinstall the operating system? Would the installer have to wait till the weather improves or the water table reduces before proceeding? Thank you for any information you may provide! This question and answer were first posted on the website MISTAKES MADE IN THE PUMPING OF SEPTIC TANKS Claire: This is a more bothersome problem than it appears at first glance – as we explain at length, we describe floating septic tanks or oil tanks that have risen to the surface.

  • The tank’s installer most likely assumed that once the tank was filled with wastewater, it would never float out of the earth during periods of rising groundwater levels.
  • In order to ensure appropriate installation of a tank that may float up and out of the earth, straps and concrete or steel anchors should be used to secure the tank to the ground.
  • As a result, at the absolute least, those connections must be inspected and fixed, or else you run the danger of a sewage backup in your building.
  • Although it is possible that the tank will be unable to be replaced if the destination hole is completely filled with water, this is not guaranteed.
  • Because of the flotation, it is likely that waste plumbing around the tank has been partially or fully damaged if not completely shattered.

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Extendable anchor base septic tank

THE ORIGINAL PURPOSE OF THE INVENTION 1. The Invention’s Application Field Aspects of the invention relate to underground septic tanks, and more specifically, to a septic tank, such as a distribution tank, fluid separator tank, or settling tank, that is adapted for burial directly in the soil and that is light in weight in construction, such as one molded from plastic, and in which the tank includes a movable anchor that is horizontally extendable from the side of the tank.

  • 2. A description of the prior art is provided.
  • Because of the overloading of the soil with undigested sewage or processed effluent caused by the disruption of a pipe connection at a septic tank, it is considered an unacceptable environmental danger.
  • In terms of weight-to-volume ratio, concrete septic tanks are advantageous since they provide a more solid subterranean installation.
  • Using plastic to construct a septic tank is relatively affordable and quick, which reduces manufacturing and inventory costs.
  • It takes less soil to make place for a plastic tank than it does for a concrete tank of equivalent volume.
  • There are two stability issues that arise when a plastic tank is planted in the ground as a result of its light weight.
  • Furthermore, if the water level in the soil rises due to severe rains, a partially empty tank may be expelled from the ground as buoyancy of the tank exceeds its weight as well as soil hold on it, causing it to be driven out of the ground.



One solution involves the use of a standpipe that is installed below a covered viewing aperture in the top of the tank and that continues into the tank’s bottom.

Another approach involves raising the height of a divider wall inside the tank in order to raise the height of water in a separating chamber within the tank in order to enhance the downward force within the tank, as described above.

This method is used in conjunction with the previous method.

During the tank’s construction, gussets are placed between the vertical studs of the frame and the horizontal bottom wall in order to reinforce the structure.

Another feature of the anchor is that it may be both retractable and extended from the tank.

Another feature is that the anchor is retractable and extensible from the tank, which is accomplished by the use of a hinge between the tank and the anchor.

It is still another requirement that the hinge be a live hinge that is molded into the tank’s exterior.

It is another another obstacle against which the anchor prevents the tank from sinking into the soil.

Other features and advantages of the invention will become evident to those who are knowledgeable in the art as a result of the following disclosure.

The method for attaching the anchor means is preferably located at the bottom of the tank and consists of hinges that are attached to both the tank and the anchor means.

Moving an anchor fixed on the tank at the bottom end of the tank from a close to the tank position to a horizontally extended position with respect to the tank, and then dumping dirt on the anchor, is one way of burying a septic tank in the ground.

DESCRIPTION OF THE DRAWINGS IN SUMMARY In order for the invention to be better understood, it will now be detailed, by way of illustration, with reference to the accompanying drawings, in which: According to the invention, FIG.

The septic tank seen in FIG.


3 shows a cross section of the septic tank shown in FIG.

This image depicts a tank that has been covered and is linked to a septic system line that has been buried in the ground.

4 depicts a front view of another septic tank constructed in accordance with the invention.

4 is shown from the bottom in FIG.




7, taken along line 8-8 of the drawing.

7 is shown from the bottom in FIG.

DESCRIPTION OF THE EMBODIMENTS THAT ARE DESIRED Before going into the specifics of the invention, it should be noted that the invention is not limited in its application to the specifics of the construction and arrangement of parts illustrated in the drawings, as the invention is capable of other embodiments and of being practiced or carried out in a variety of ways.

  • The septic system distribution tank 20 shown in FIGS.
  • The tank is made of plastic and slopes down from a width of 26 inches at the top to a width of 28 inches at the bottom.
  • Four anchor plates (numbers 32, 34, 36, and 37) give the necessary stability to keep the tank upright in a hole, which is frequently on somewhat soft soil.
  • Vertical line 29 can be located anywhere in the tank, although it is preferred that it be located near or at the middle of the tank.
  • An integrally molded anchor plate is preferred, which means it is formed along with the tank as a single piece.
  • In this illustration, the plates are displayed at various phases of deployment.
  • Tank 20 is manufactured and supplied nested with other tanks 20 at the 36A position, which is the position at which all of the plates are given.

It is preferable that grasp protrusion 46 and bracing wall 44 be both molded components of the tank and anchor.

3, a cross section of a septic tank 20 is illustrated that has been covered with a lid 50, is linked to a septic system pipe 52, and has been buried in soil 54.

When the combination of a full tank and a lower water level happens, as might occur as a result of changes in sewage supply, weather, and season, and tank 20 is full with sewage and the level of ground water decreases, the tank is pressed downward into the soil by the weight of the sewage.

This is completely inappropriate.

During the initial placement of the tank on a bed of dirt at level 58 before earth is added to cover the tank to level 59, the anchors help to prevent the tank from tipping over into the soil by providing a larger support base for the tank.

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Due to the fact that the pipes are being installed in many directions, the broader, stiffer support foundation supplied by the anchors is critical since the tank is being shifted on the base, where it will dig into the soil at various angles.

As the earth is refilled on level 58, over the tank, the dirt first falls on the anchors and vertical brace walls 44, which cause the soil to fall into the tank.

The vertical brace walls serve as an anchor for the tank, preventing it from rotating about its vertical axis 70.

As shown in FIGS.

Molding of the septic tank 60 is followed by the installation of pipe seals 90 on the tank in a separate operation from the molding process.

When the anchors are fully retracted, nearly the whole length of each anchor is beneath bottom 94.

Generally speaking, when the tank is in horizontal position 63, the anchors are coplanar with the tank’s support base 67.


A triangular wedge of soil formed by the soil impacting around the anchor on the top side 120, bottom side 122, and within the adjacent region between the top of the anchor and lower side 124 of the tank holds the anchor stiff and prevents rotation of the anchor toward the lower side of the tank when it is fully extended horizontally from the tank and buried in soil.

When anchor 106 is rotated to the horizontal position and removable brace 112 is inserted into catches 114, the horizontally extendable and retractable anchor 106 of tank 110 provides upward and downward anchoring force when the tank is seated at the bottom of a hole in the soil prior to back filling the hole with soil.

  • Septic tank anchors 134 are shown in FIGS.
  • As soon as the tank’s container component 150, which includes bottom wall 138, has been molded with integral clips 142, the anchors 134 are snapped into the clips by way of the adjacent wall’s slots (144-145-146-147), which are located next to wall 138.
  • As shown in Figure 1, anchors 134 are extensible horizontally in the direction 156 and may be retracted such that the anchors are under the wall 138, parallel to the wall 138, and preferably with the entirety of each anchor beneath the wall when they are entirely retracted.
  • Anchors 134 are fully extended horizontally from the tank in the illustration of FIG.
  • When they are covered with dirt, they offer an upward and downward anchoring force to the tank when it is seated at the bottom of a hole, respectively.

Many modifications and substitutions can be made without deviating from the spirit and scope of the invention, as set forth in the following claims, which will be obvious to those skilled in the art.

How to Install a Plastic Septic Tank

Home-Diy Septic tanks constructed of lightweight plastic are convenient for transporting and moving, but they can bend when put in unstable soils and float when installed in saturated soils without sufficient ballast, making them less effective. Flotation is particularly problematic in plastic pump chambers that are low on liquid while operating on wet soils. if (sources.length) then this.parentNode.removeChild(sources); then this.onerror = null; this.src = fallback; )(,; )(,; )(,; (//$/, “), ‘/public/images/logo-fallback.png’)” loading=”lazy”> (//$/, “), ‘/public/images/logo-fallback.png’)” loading=”lazy”> (//$/, “), ‘/public/images/logo-fallback.png’)” loading=”lazy”> (/public/images/log Plastic septic tanks are a cost-effective and lightweight alternative to concrete septic tanks.

Plastic tanks are a viable alternative when concrete septic tank trucks are unable to access a spot or when the region is sensitive to heavy machinery such as construction sites.

  1. Make the necessary excavations where the new plastic tank will be installed per the specifications provided by the tank’s manufacturer with the help of an excavator. Make use of a laser level to check elevations
  2. Attach a chain to the excavator’s bucket by threading it through the lifting eyes that have been formed into the tank. Lifting the tank with the excavator and lowering it into the pit is a common practice. Remove the tank from the excavator with a hammer. Moving any type of stuff or equipment off the ground is a potentially hazardous endeavor. Maintain a safe gap between you and the rest of the work group. A chain should be threaded through the lifting eyes on the concrete weights and then attached to the excavator. Lift and position the concrete weights on either side of the tank. Drape the cable over the top of the plastic tank and thread the cable through the lifting eyes on the other concrete weight
  3. Thread the cable through the lifting eyes on the other concrete weight
  4. Thread the cable through the cable clamps and tighten the bolts with a socket wrench to ensure that the clamp is securely attached to the cable. Fill the tank with water using a garden hose that has been inserted into the tank. Using the excavator, backfill the hole with earth at the same time as you are digging. Vibratory compactors should be used to compact the soil in 6- to 8-inch intervals.

The Drip Cap

  • Make the necessary excavations where the new plastic tank will be installed in accordance with the manufacturer’s specifications. Using a laser level, check the elevations
  • Attach a chain to the excavator’s bucket by threading it through the lifting eyes molded into the tank’s walls. By using an excavator, you may lift the tank and drop it into the hole in the ground. The tank should be removed with ease from the excavators’ grip. Moving any type of material or equipment off the ground is a potentially hazardous activity. Maintain a safe gap between you and the rest of the work group
  • And Using the lifting eyes on the concrete weights, link a chain to the excavator by threading the chain through them. lowering the concrete weights and putting them on either side of the tank Using the lifting eye on one concrete weight, thread the cable through that weight, drape it over the top of the plastic tank, and then thread it through both lifting eyes on the second concrete weight. Thread the cable through the cable clamps and tighten the bolts using a socket wrench to ensure that the clamp is securely attached to the cable Fill the tank with water using a garden hose connected to the tank. Using the excavator, backfill the hole with earth at the same time as digging. In 6- to 8-inch intervals, compress the dirt using a vibratory compactor.

A Short Guide on Fiberglass Septic Tanks (Updated for 2020)

A septic tank is an underground chamber into which wastewater is channeled for basic treatment before being discharged. Typically, these tanks are used to store effluent from household sources, but they are now now being used in businesses and factories to store wastewater that has comparable qualities to that of domestic effluent. Septic tanks are designed such that the liquid flows through the tank while the heavier particles fall to the bottom of the tank. The scum (which is mostly comprised of oil and grease) floats to the surface.

Septic tanks are generally classified into four categories, which are available on the market: Septic tanks made of fiberglass septic tanks made of steel Septic tanks that use aerobic bacteria Septic tanks made of concrete In this blog post, we’ve offered a brief overview of fiberglass tanks and how they work.

What is Fiberglass Septic Tank?

Tanks built of fiberglass, as the name implies, are constructed of fiber or a sort of modified plastic. They are lighter in weight than the other kinds and are resistant to corrosion and breaking when compared to the others. The nicest aspect about these tanks is that they are quite simple to put together. However, there are a few things that you should keep an eye out for while evaluating one: Check for a faulty plastic stopper at the bottom of the tank after you have emptied it to see whether the level of the effluent has dropped too low.


Observe for signs of abnormally low effluent levels as well as the absence of drain plugs.

A gravel-filled tank is used for this test, and water is pumped into the tank to stimulate groundwater pressures as part of it. The manufacturer determines the depth of the tank and the length of time that will be used for the test. The greater the number, the better!

Fiberglass Septic Tank Cost

the size and quality of the material used to construct the tank are the two most important factors affecting the price of a fiberglass septic tank In the United States, the average price is between $1600 and $2000 a month. A fiberglass tank can endure for up to twenty to thirty years, depending on the building methods employed, the state of the soil, and the materials used in the production process, among other factors.

How Does a Fiberglass Septic Tank Work?

Essentially, a septic tank is an underwater sedimentation tank that is used to cleanse wastewater through a process of biological breakdown and drainage. The design of fiberglass tanks is straightforward. It consists of a fiberglass container (often rectangular or spherical in shape) buried underground and sealed against the elements. The tank is connected to the rest of the system by two pipes: an input and an output. It is the input pipe’s responsibility to collect wastewater in the septic tank, whereas it is the outlet pipe’s responsibility to remove the pre-processed wastewater from the septic tank and disperse it evenly across the soil and watercourses.

The top layer is primarily made up of oil and grease, which floats above the rest of the waste and collects water.

The wastewater and waste particles that make up the intermediate layer are collected here.

Bacteria from wastewater break down the solid waste that accumulates inside the tank.

Which is Better Concrete or Fiberglass Septic Tank?

Fiberglass tanks are waterproof and corrosion-resistant, making them ideal for storage. Additionally, they are less heavy than concrete septic tanks. Rather than being lightweight and resistant to corrosion, concrete tanks are hefty and susceptible to corrosion. When compared to concrete septic tanks, lightweight septic tanks are more susceptible to damage during the installation process, according to a recent research. Concrete septic tanks are also far more expensive to construct and maintain than fiberglass septic tanks, both in terms of installation and maintenance expenses.

Additionally, if fiberglass tanks are built incorrectly, they will frequently float on the ground’s surface.

The most problematic aspect of concrete septic tanks is that they frequently break when exposed to extremely hot or cold weather.

In addition, as compared to plastic septic tanks, they are more prone to leakage and breaking. To summarize, fiberglass tanks are the most cost-effective alternative if you’re seeking for a tank that will meet your needs while still being affordable.

Advantage and Disadvantage of Fiberglass Septic Tanks

If you’re intending to construct a new septic tank or replace an old one, a fiberglass tank may be an excellent option for you. Here are some of the reasons why you should select it over the alternatives: 1.They are less in weight as compared to steel and concrete tanks, and they may be erected almost anyplace. Large trucks and cranes may be unable to access certain regions, which might be a significant benefit in some cases. 2.They are small enough to be transported in a pickup truck. 3.They are extremely strong and long-lasting.

4.They have a higher resistance to corrosive elements than concrete storage tanks.

The roots of plants find it difficult to enter them, in contrast to the situation with concrete tanks.

Let’s talk about it!

Because these tanks weigh less than concrete tanks, you must take the necessary precautions to ensure that they are properly anchored to the ground before using them.

A fiberglass tank that has been correctly constructed and secured can survive for many years without causing you any concern.

Keep in mind to share your ideas in the comments area below!

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