Let's take a look at a rather interesting way to build a PVC pipe foundation. This type of foundation is suitable for light buildings or structures. In our case, this will be the foundation of the terrace. Next, I will tell you how to make such a foundation and how much it costs.
In our case, 7 pillars are needed for the foundation. The depth of the pipes is 1.8 m (depending on the depth of soil freezing) and they will protrude 0.8 m above the ground.

PVC pipes will act as fixed formwork, which will be reinforced and poured with concrete. The pipes were taken with a size of 3 m, a diameter of 160 mm, and a wall thickness of 3.2 mm.
Price building materials:
PVC pipe 160x3.2x3000 - 700 rubles; 7х700=4900 r
Dry cement-sand mix grade 300:
- 6 bags of 50 kg - 150 rubles / bag = 800 r
- 9 bags of 30 kg - 109 r / piece = 981 r
Rebar with a diameter of 10 mm 6 pcs of 11.75 m - 23r / m + cutting = 1711 r
The total cost of materials amounted to 8,392 rubles.
Foundation tools:
manual drill with a diameter of 200 mm;
Bulgarian;
drill;
scrap;
shovel.
PVC pipe foundation technology
The first step is to make markings and determine the places for drilling holes for piles.
Drilling a hole 1.8 m deep is quite difficult, so first we dig a hole 50 cm deep with a shovel, then we make a hole 1.3 m deep with a drill.
During the drilling process, you need to monitor the vertical and periodically check its level.
We install a 160 mm pipe into a hole with a diameter of 200 mm and first fill in one bucket of solution. We raise the pipe by 15-20 cm so that the solution fills the space around the PVC pipe. So we will get a concrete heel below, which will increase the area of ​​\u200b\u200bsupport and prevent heaving forces from lifting the pipe.
After 20 minutes, you can install frames from reinforcement. You need to make them from 3 bars of reinforcement and fasten with knitting wire.
Fill the pipes to the top with mortar. In the process of pouring, the mixture must be compacted; for this purpose, a reinforcement rod is suitable.
Do not forget to install anchor bolts for fastening the strapping beam.
Foundation pouring mix is ​​usually prepared by hand in buckets. For mixing, use a drill attachment.
After 7 days, you can continue building walls.

Sometimes features of the landscape land plot, intended for building a house, does not allow you to make a deep strip or tile foundation. This may be due to the high level ground water, deep freezing of the soil. In this case, a columnar foundation is being built, the essence of which is that piles are driven into the ground or pillars are poured, on which the building is subsequently placed. Such foundations are more reliable and much cheaper than strip or tile foundations. But even here there are many problems and nuances. When pouring columnar foundations, different types of formwork are used. In order to reduce time and material costs for the manufacture of formwork, a columnar foundation is often made of plastic pipes. What are the advantages of a columnar foundation poured into a plastic pipe formwork?

For the rapid production of formwork for bored piles roofing material, plastic pipes or asbestos pipes are used. Asbestos pipes are much more expensive than plastic pipes and contain harmful substances that enter the body when these pipes are cut. The use of roofing material to create flooded formwork has its drawbacks: low strength (it can break during compaction), the impossibility of creating piles of the same size, however, this is the cheapest material.

The best option is PVC pipes, which protect concrete in the soil from the effects of subsoil moisture and have sufficient rigidity, strength, and, in addition, a relatively low price. Formwork made of such pipes is light, highly resistant to aggressive substances, and has a smooth surface. The disadvantage of this formwork material is the possibility of damage during freezing from the expansion of moisture between the pipe and concrete Online Pharmacies.

Materials and tools

The technology of work on the manufacture of pillars using TISE.

tadalafil 20 mg To make a foundation from pipes, you must have the following materials:

1. Reinforcement for the manufacture of the frame and knitting wire (3-4 rods per pole 0.5 m long longer than the pipe).
2. Concrete brand M300 or M400 with a fine fraction of crushed stone.
3. As a fixed formwork - a sewer pipe with a diameter of 110 to 180 mm (orange).

For work on the manufacture of pillars, you will need the following tools:

1. Garden drill, TISE or home-made (with a large freezing depth, an extension cord for the drill is required). You can use a motor drill, which will allow you to drill wells much faster.
2. Bayonet shovel with cut edges to a width of 10 cm.
3. "Bulgarian" with cutting wheels.
4. Buckets 15 liters.
5. Heavy hammer.
6. Building level.
7. Wooden pegs and cord.

When making concrete with your own hands, you also need:

Why is it better to take plastic pipes for external sewage? Because they are designed for outdoor use, they are much more durable. If we take the cost, then the same pipes with the same wall thickness for internal and external sewers cost the same. However, orange plastic pipes have a diameter range of 110 mm to 500 mm, and gray ones only 110 mm.

Preparatory work

Figure 1. Marking technology for a columnar foundation: 1. Cast-off boards. 2. Nails. 3. Cords. 4. Marks of the future foundation.

Before building a foundation of polyethylene pipes with your own hands, you need to determine the depth to which the columns will be poured. To do this, you need to study the features of the area on which the construction will be carried out, find out the depth of soil freezing, the location of the groundwater level and other important factors. Based on this, columnar foundations are not buried (up to 0.5 m), shallowly buried (from 0.5 to 1.0 m) and deeply buried (over 1.5 m in depth).

Also, during the preparatory work, they clean and level the territory, mark the location of the building, calculate the number of pillars depending on the load on the foundation and note their location. Pegs are hammered in at the location of the corner piles, and then, with the help of stretched cords, the location of the remaining wells (pits) is marked with wooden pegs (Fig. 1). The distance between the pillars is on average 1.5-2.5 m. In addition, they prepare a tool, when preparing concrete on their own - a concrete mixer, supply electrical power, arrange a place to store the necessary materials and tools.

If necessary (if the length of the columns being made does not correspond to the standard length of pipes of 1, 2 or 3 m, pipes of the length we need are cut. Also cut pieces of reinforcement of the required length (if necessary, weld their pieces), make a frame of 3 or 4 rods.

Formwork manufacturing

Figure 2. The well should be drilled larger than the diameter of the pipe and deeper than the length of the pipe.

Further, wells are drilled under the pillars (Fig. 2). The diameter of the wells should be 5 cm larger than the diameter of the pipe, and the depth should be 20-30 cm greater than the freezing depth. All wells can be drilled at once. But due to the possible influence of precipitation or the impact of high groundwater, which can erode the walls of the pit, it is better to drill several wells and immediately make concrete pillars.

After drilling in the lower part of the well, it is expanded with a shovel or nozzles on the drill, creating an expansion of a diameter of 10-15 cm with a height of 20-30 cm. the edge was approximately at the level of the lower plane of the future grillage ± 10 cm (Fig. 3). After checking the verticality of its position with the help of a building level, it is fixed relative to the walls of the well.

Pouring concrete into formwork

Figure 3. The formwork is installed approximately at the level of the lower plane of the future grillage.

Having collected a bucket of concrete, pour it inside a plastic pipe. After pouring about 2 buckets of concrete, a plastic pipe is pulled out from the top to a height of 10-15 cm. In this case, the poured concrete will crawl out of the plastic pipe and spread along the widened part of the pit, forming a thickened column heel. This heel increases the area of ​​pressure on the ground and will not allow the column to be squeezed out of the well during heaving of the soil in severe frosts. Then they fill the well around the pipe with the available soil and, controlling its verticality, ram it with a long object.

To form the heel, some use the method with an attached trash bag at the bottom of the tube. This is necessary when the diameter of the well is much larger than the diameter of the plastic pipe. Then the level of poured concrete can rise along the well to the level inside the pipe, and it must be limited. However, if the diameter of the pit is 5-10 cm larger than the inserted formwork, then after raising the pipe, the poured concrete occupies only the expanded space of the well. At the point of contact between concrete and soil, a stable bond is formed. It does not have sufficient energy to rise higher, and during further pouring, this is prevented by the soil that is filled up and compacted from above.

In addition, when installing the formwork, the plastic bag may collapse, and after pouring and hardening of the concrete, separation of the heel from the body of the post may result.

Next, reinforcing bars or a frame made inside a plastic pipe are inserted or hammered into already poured concrete so that 20-30 cm of reinforcement bars remain above the pipe (for connection with the grillage frame).

Figure 4. When pouring concrete into a pipe, it is important to carefully compact it during the entire pouring stage.

Some, in order to increase the grip of the heel with the body of the column, insert a reinforcement bent at the end with a hook, which is turned before pouring. This can be extra work and a waste of time because the ribs of the reinforcing bars adhere quite well to the compacted concrete and therefore such precautions are unnecessary. When building frame house the strapping of the beam is connected to the post using a stud with nuts, which are pre-poured into the concrete of the upper part of the post.

After pouring each bucket of concrete, it is carefully rammed with a metal rod or a construction vibrator. When baying with reinforcing bars, in order not to damage the above-ground part of the formwork (that is, so that the plastic pipe outside the soil does not crack during baying), clamps can be applied to it from above or pulled off by other means. You can put a metal pipe on it, the inner diameter of which is approximately equal to the outer diameter of the plastic pipe.

Next, several more buckets of concrete are poured into the pipe, pouring the pipe to the level of the soil surface. Then, with a hydraulic level or a laser level, the plane of the lower part of the grillage is marked on all PVC pipes and the pipes are cut at this level. Then concrete is poured to the edges of the pipes and left to solidify completely (Fig. 4).

Final works

In the early days, wet sawdust can be poured onto the upper end of the column, which are then closed with a plastic bag. This will prevent the concrete from drying out. The concrete must then set (ripen).

Do-it-yourself production of a columnar foundation from plastic pipes is possible even for one worker.

If a person likes to do everything with his own hands and does not like to involve hired force or special means, then he can significantly save materials and time and make such a columnar foundation on his own.

Column Foundation from plastic pipes with their own hands

Do-it-yourself instructions for building a columnar foundation from plastic pipes. List of materials and tools. Formwork preparation, formwork, concrete pouring and final work.

You can independently pour the foundation for a house, a bathhouse or an extension using sewer plastic pipes. A kind of pile foundation will require less money than a classic tape one; materials for its construction are available in any building market. The technology for constructing a columnar foundation made of plastic pipes is very simple, and the performance characteristics are suitable for any soil. The main thing here is to take into account the characteristics of the soil and climate.

The columnar foundation is a point support that is embedded deep into the ground. The distance between the pillars varies from 1 to 3 meters, depending on the weight of the building. Under a light structure, it is enough to install pillars around the perimeter bearing walls. For heavier houses, the columnar foundation looks like equidistant supports throughout the area.

To evenly distribute the load, the individual pillars are connected with a grillage, which can be made in the form of a frame around the perimeter or a reinforced concrete slab laid on the pillars. The depth of the pillars and the location of the grillage relative to the level of the soil varies.

There are columnar foundations in height:

• recessed - built to prevent blowing through the building under the floor;
• low - have a grillage at ground level;
• high - the house is raised above ground level in flooded areas.

The material for the supporting pillars is reinforced concrete or ready-made piles. Since finished piles and their installation are quite expensive, it is of interest for budget construction to use a minimum of inexpensive materials.

Self-construction of a columnar foundation differs little from construction technology strip foundation. It also requires the creation of formwork for pouring support pillars.

There are several execution options:

Greetings to all my dear readers. Today I want to write how to build a columnar foundation from plastic pipes with my own hands. I will tell you what it is, list its properties, describe the technology, the manufacturing process. I will add some information about drilling wells and concreting pillars.

This is a relatively economical and high-quality foundation, installed on plastic poles. It is used in low-lying areas where groundwater is close to the surface. Its main support is plastic poles driven into the ground, which are filled with concrete and connected to the structure, forming a grillage.

Such a plastic base has high technical characteristics and at the same time is much cheaper than the base material of other types of bases used in such cases. The columnar foundation is easy to mount with your own hands.

The weight of the entire structure of the building rests on the grillage and is transferred to the ground through plastic piles. Due to the high strength and durability of the plastic material, the quality and durability of the structure remain at the required level.

What buildings can be built on a columnar foundation

On a columnar foundation, mainly wooden ones are erected. Single, maximum two-storey houses. The specific gravity of the building material of the building should not exceed 1 t/m³. Some types of cinder blocks, cellular concrete have such characteristics.

Device

The columnar foundation is made of brown or orange sewer pipes. They are designed for outdoor use in the ground, so they are best suited for the formation of a columnar foundation.

Reinforcement is inserted into the pipe, poured with concrete, an anchor is attached from above. Its socket in our case will be used as a widening. The widening located at the bottom, filled with concrete, will improve the support, become the heel of the column. See photos and videos.

Advantages and disadvantages of the design

The advantages outweigh the disadvantages of this type of foundation. Advantages:

1. The ability to install supports in areas where groundwater comes to the surface or periodically floods the structure.
2. It is used on any soil with complex terrain.
3. You can build a columnar foundation with your own hands. Installation is less time consuming and fast.
4. Cheap and lightweight pipes allow you to save on transportation costs, loading and unloading of material.
5. The high durability of plastic supports is combined with the environmental friendliness of the material.

Disadvantages cannot be ignored:

The destruction or subsidence of at least one support threatens to deform the entire building.

Which pipes are suitable and how many will be needed

It is better to use orange or brown sewer pipes: they are stronger and less susceptible to external influences than gray or white ones. If there are blue or green, then they are also suitable for a columnar foundation. With such a color marking, they are produced for laying tracks in the ground.

The maximum thickness of gray or white pipes is 110 mm. This may not be enough. Brown or orange can be up to 630 mm. You can use black pipes, which are also suitable for outdoor use.

But before buying, find out their characteristics. Black pipes have their own temperature and strength range, it may not be enough for a particular use. This applies to all types: check the technical specifications before purchasing so as not to make a mistake when choosing.

Step-by-step instructions on how to make a columnar foundation with your own hands

Building design required. It is made by hand or used ready-made. This will give knowledge of the dimensions and structure of the columnar foundation, as well as an idea of ​​the weight of the future structure. Based on these data, the type and thickness of plastic pipes are selected.

For soil with fine, low-moisture sand and clay soil with a column depth of 0.5 m, 1 m and 1.5 m, I will give a table.

Diameter, mm	Load, tons, for sandy and clayey soils with depth
	0.5 m		1m		1.5 m
	sandy	clay	sandy	clay	sandy	clay
110	0,2	0,2	0,2	0,3	0,2		0,3
250	0,8	1,2	1	1,4	1,2		1,7
315	1,4	1,9	1,6	2,3	1,9		2,7
400	2,2	3,1	2,7	3,7	3,1		4,3
600	5,1	7,8	6,1	9,3	7,9		10,9

Having calculated the number and structure of PVC pillars, you can proceed with the installation of the columnar foundation.

Necessary tools and materials

From the tools you will need:

• concrete mixer or construction electric mixer, manual or stationary;
• grinder for cutting metal pieces of reinforcement;
• drill with a diameter for a pipe with a socket;
• shovel;
• hammer;
• cord or fishing line, tape measure and marker;
• level, if the site is uneven with a clear slope, then it is better to have a hydraulic level;
• trowel and spatula;
• containers for the solution, in the case of using a mixer - a container for stirring.

From the materials you will need:

• plastic pipes, their type and quantity have been described above;
• cement M500 or M400;
• rebar, wire, anchor bolt or plates;
• fine gravel and sand;
• wooden stakes.

Preparatory process

The area must be cleared of debris. Rhizomes also need to be removed. Level the entire area, get rid of potholes, mounds - with your own hands or with a bulldozer. Electricity is needed: pull extension cords to the future construction site.

Marking

First, stakes are installed around the perimeter, adding 1 m each. The stake is installed at the intersection of the cords, having previously measured and checked all the distances according to the foundation drawing.

If the soil where the columnar foundation is being built is uneven, then the marking cord must be pulled along the level. And the poles must be taken with a margin in order to dig into the ground to a certain depth. The rest is cut off by level. A hydraulic level is well suited for this purpose.

Manufacturing technology of the columnar foundation

For the speed and reliability of the construction of the foundation, it is made by drilling, followed by concreting the internal space of plastic pipes.

For even cutting of pipes with your own hands, use a ring. It is made from a plastic socket of the same diameter: the o-ring is cut off and the rubber seal is removed. The resulting plastic ring will be a good mark for evenly marking plastic pipes.

Well drilling and pile installation

After marking, they begin to drill wells and. The diameter of the drill should be 5–10 cm larger than the diameter of the pipe. To avoid collapses and falling asleep of pits, it is not necessary to drill several wells in a row. It is necessary to install piles sequentially.

Pits are made of the same depth according to the table. At the same time, about 25 cm is added: this distance is covered with gravel by 20 cm, and a couple of cement mortar trowels are placed on top so that the future pile is inserted into this solution. The evenness of the pillars is checked by level. Sand or weak cement mortar can be added to crushed stone.

Pipe concreting

A reinforcement frame is inserted into plastic pipes - several rods connected or welded together with wire. Reinforcement bars are evenly spaced.

If it is intended to use a cement grillage, then this reinforcement can be used as an anchor. For a wooden grillage, an anchor bolt or plate is used. The armature must be completely recessed into the plastic pipe.

Concrete is poured gradually, tamping with a metal rod so that the plastic column is filled without airing.

Possible errors during construction and how to correct them

A common mistake is to use thin plastic poles or not enough of them. When calculating, sometimes the mass of the building is incorrectly determined - without taking into account snow embankments, wetting walls and roofs. If the site is uneven, plastic poles were dug into the ground to different depths, which can lead to uneven shrinkage of the column foundation and subsequent skew.

Conclusion

The described works are available even to one person, there is no need to involve a team of workers. And I hope that my publication has become useful and necessary for you. Parting, I suggest subscribing to updates so as not to miss the interesting. Share a note on social networks so that your friends learn about the foundation of plastic pipes and how to make it yourself.

A columnar foundation made of PVC pipes is allowed to be erected for construction residential buildings, baths, other household facilities in soils with good bearing capacity. The material for the manufacture of foundation pillars can be: brick; monolithic and prefabricated concrete; PVC pipes. In this article, do-it-yourself technology for erecting pillars for a PVC pipe foundation.

The columnar foundation consists of separate supports (pillars) that are dug into the ground along the perimeter of the building (under the load-bearing partitions) and help transfer the load from the weight of the building to the soil foundation. This type of foundation supports saves money by reducing the cost of purchasing materials. Even greater savings can be achieved by building poles from plastic pipes with your own hands. This technology has been developed for country houses low-rise, baths, utility sheds, gazebos.

The material for the construction of a columnar foundation is PVC sewer pipes of a certain diameter. To enhance the strength of the support, reinforcement of the structures with metal reinforcement should be provided.

Usually, plastic pipes for external sewer networks are used for the installation of a columnar base, which in this type of foundation are fixed formwork. They are easy to cut with a regular knife when installing with your own hands.

Piling pipes

This type of foundation made of plastic sewer pipes, it is quite possible to build, relying only on one's own strength - with one's own hands, while saving a lot.

Plastic supports for the construction of various objects can be installed in any soil, but the norm for installing individual pillars (pipes) should be observed - the laying depth should be at least 1.5 meters below the freezing point of the soil. Subject to this norm, the foundation pillars (pipes) are not subject to settlement under adverse conditions.

The foundation of plastic pipes can be operated for up to a maximum of 70 years, it is able to withstand significant loads, but this is not enough for the construction of a stationary residential building.

The support base made of PVC formwork does not allow building basements in buildings under construction without additional technical solutions, therefore it is better not to use such bases for heavy residential buildings.

Advantages of PVC poles

Pile pouring

The main advantages of columnar bases from sewer pipes can be considered:

• Possibility of use on terrain with difficult terrain, in soils of any type (do-it-yourself work).
• Profitability - the main materials (pipes, concrete mortar) for the construction of such a foundation for a building are not very expensive.
• It is allowed to build a foundation of plastic supports on a site with high level groundwater, as well as in areas of periodic flooding.
• Possibility of doing the work with your own hands.
• Low labor intensity of the complex of works.
• The speed and ease of performing work on the installation of a foundation base from a PVC pipe.
• Plastic pipes do not require protection against corrosion and aggressive liquids, measures for the insulation of foundation structures.
• Due to the low weight of the pipe, it is possible to save on transport costs and handling operations.

Work technology

A columnar foundation made of PVC pipes begins to be carried out with a set of preparatory work, which includes the preparation of the building site and the building material itself.

The area allotted for construction should be cleared of debris and vegetation, carefully planned. Stakes are driven in along the perimeter of the building, which mark the corners of the building and the location of the pits. The stakes are connected with a building cord. Plastic pipes are cut to size, while it is important to remember that the length of one column must be greater than the depth of soil freezing.

Piling drilling

Wells for plastic pillars are drilled in the same way as for bored piles (these foundations have a similar arrangement technology). Piles and poles are separate supports that take the load from the building. Piles can be poured in a fixed formwork, almost the same type as the pillars. It should not be forgotten that the size of the well should be at least 5 cm larger than the pipe diameter.

If the post will be erected with a broadening in the lower part, it is necessary to perform a similar widening in the ground when drilling wells.

It is allowed to drill wells for all foundation pillars at the same time, but this method is only suitable for hard soils. In crumbling soils, it is best to drill a well, install plastic pipes (formwork) with your own hands and concreting, sequentially for several support pillars.

• PVC pipes cut to size are installed in wells prepared in advance as formwork. To form a widening at the ends of the pipes, a plastic or plastic bag of sufficient size is reinforced with adhesive tape - when filling with a concrete mixture, the bag is an example of the shape of a widening prepared in advance in the ground.
• PVC pipes for do-it-yourself post formwork should be carefully set in the wells at the same level, checking the verticality with a laser building level.

Reinforcement and concrete filling

Reinforcement of formwork from a plastic pipe is performed somewhat differently than for a bored pile. Reinforcing bars are inserted into the plastic, which are bent at the end at 90 degrees if the pillars are erected with broadening. Under light buildings, when the broadening of the supports is not provided, it is enough to use ordinary steel ribbed reinforcement.

Next, fill concrete mix inside the plastic formwork with your own hands. The column should be poured with a concrete mixture in two steps: first, a widened heel is concreted, for which part of the concrete is poured and the shell is lifted. The concrete mix fills the plastic bag, forming a broadening of the base. Then the concreting of the structure is continued by pouring the concrete mixture until the formwork shell (pipe) is filled to the top mark.

Watch a video on how to pour concrete into a pile with your own hands.

A special device (stud) is installed on top of the support column (piles) for fastening the structures of the hinged grillage or walls. The hardening time of the concrete mixture in the plastic support does not exceed several days, during which time the top of the column should be moistened and covered with polyethylene.

Grillage

Bored piles and a columnar base of the foundation must be equipped with the construction of a single bearing belt, which is a grillage. Pillars and piles can be equipped with a hinged grillage, which is made of lightweight materials, performing a protective and decorative role. Pillars (piles) are connected with a more powerful ground grillage for finishing external surfaces with heavy facing materials, as well as to ensure heat conservation, protection from high humidity and low temperatures in winter.

Watch the video on how to make a grillage device.

A grillage belt combines supports of this type, such as piles and poles. Ground grillage on a columnar base can be erected from monolithic and prefabricated reinforced concrete, brick and rubble stone. A heavy grillage will require the construction of a separate shallow-depth tape support.

Related articles:

In this article, we will describe another type of columnar foundation using fixed formwork made of plastic pipes (PVC) for external sewerage.

Advantages of a columnar foundation made of plastic pipes (PVC) for external sewage

• Formwork durability. If we consider a PVC pipe for external sewerage, then its service life, according to manufacturers, is at least 50 years.
• High resistance to aggressive environments. Frost resistance.
• Lightweight yet strong and durable
• Large variety of sizes. Diameter 110 mm - 630 mm. Length 1 m - 6 m.
• Due to the smooth surface, the soil during heaving will slide over the surface of the PVC pipe (in theory it should be like this).

If you use plastic pipes for internal sewage (gray), they are slightly cheaper than orange PVC pipes, but at the same time they will last much less in the ground. This is logical, since this type of pipe is intended for indoor sewage. In general, if you think logically, then the main purpose of fixed formwork is the formation of a pillar. And directly the service life of a column of reinforced concrete is 150 years. © www.gvozdem.ru

Disadvantages of PVC pipe formwork

• More expensive than roofing material formwork.

Gray PVC pipes for internal sewerage have a maximum possible diameter of 110 mm. (Orange pipes for outdoor sewage have a richer range of diameters from 110 to 630 mm.)

Average prices of PVC pipes for external sewerage (St. Petersburg)

110	3,2	1000	130
110	3,2	2000	250
110	3,2	3000	370
110	3,2	6060	730
160	4	1000	240
160	4	1200	290
160	4	2000	470
160	4	3000	680
160	4	6080	1360
200	4,9	1200	400
200	4,9	2000	660
200	4,9	3000	960
200	4,9	6090	1910
250	6,2	1000	600
250	6,2	2000	960
250	6,2	3000	1400
250	6,2	6130	2800
315	7,7	1200	840
315	7,7	2000	1360
315	7,7	3000	2010
315	7,7	6140	4010
400	9,8	1000	1550
400	9,8	2000	2530
400	9,8	3000	3700
400	9,8	6150	7410
500	12,3	3000	5950
500	12,3	6160	11810

Average prices of PVC pipes for internal sewerage (St. Petersburg)

110	2,2	1000	110
110	2,2	1500	160
110	2,2	2000	200
110	2,2	3000	290
110	3,2	1000	130
110	3,2	1500	190
110	3,2	2000	240
110	3,2	3000	370

As you can see, the price of a plastic pipe for external (orange) and internal (gray) sewers is practically the same, but the advantages of orange PVC pipes for use as fixed formwork in the ground are undeniable (advantages of PVC pipes for external sewers).

Instructions for the construction of a columnar foundation made of plastic pipes

We bring to your attention the instructions for installing a columnar foundation made of plastic pipes (PVC). You can study more detailed instructions in the article: Do-it-yourself column foundation.

Work plan

1. Designing a columnar foundation. Calculation of the number of pillars, their location, placement depth in the ground. Detailed instructions on the layout of the foundation can be found in the article: Marking for the foundation. Rules for constructing a rectangular foundation. For a columnar foundation: Marking for a columnar foundation with a grillage.

Calculator Stolby-Online v.1.0 - designing a columnar foundation.

2. Preparatory work.
We prepare formwork from plastic pipes of the length we need. If we make the post with a widening, then we place a garbage bag at the bottom of the pipe and fasten it to the formwork with adhesive tape. This bag will serve as a reservoir for filling the heel of the column.

3. We make a reinforcing cage. If we reinforce the widenings, then we make the reinforcements in the form of the letter L. Read more in the article: Reinforcing cage for widening the columnar foundation.

If you have a lower trim and a beam, then to connect it with the columnar foundation, we will use anchor studs cast into the pole.

4. We drill wells to a depth below the freezing of the soil.

To calculate the depth of soil freezing, you can use our calculator: Calculation of the depth of soil freezing.

5. We make widenings at the bottom of our wells.

6. We insert a fixed formwork made of PVC pipes into our well and form a widening.

All pillars are on the same level. For this task, you will need to beat off the horizontal using a hydro or laser level and pull the string along the level. On the twine we will display all the pillars. So that the formwork does not sag with us, we make a fixture in the form of a grip as in the figure. To capture, we need 3 bars, 2 screws and a rope.
If it is difficult to set the formwork along the twine, then you can make it longer during the harvesting process and then cut all the piles into one level. The main thing is to make a mark on the formwork - to what level you will pour concrete.

7. We insert the reinforcement cage into the formwork. We expand the reinforcement for reinforcing the heel of the column.

8. Fill the column with concrete.
To calculate the composition of concrete, we suggest using our service: Calculator for calculating the composition of concrete.

9. We fix the anchor stud at the top of the post.

10. That's it, the foundation of PVC plastic pipes is ready. You can also recommend waterproofing the upper part of the column with roofing material or bituminous mastic.

We read a more detailed step-by-step instruction in the article: Do-it-yourself columnar foundation. © www.gvozdem.ru

• Do-it-yourself column foundation
• Installation of an anchor for connecting a pole and a strapping from a bar
• Columnar foundation of asbestos-cement pipes
• Pillar foundation made of wood
• Pillar foundation made of bricks
• Video. Column Foundation

In the presence of swampy soil, the construction of a tape or tiled base is impossible. Will help solve the problem step-by-step instruction on the construction of a columnar foundation of plastic pipes with their own hands. This type of foundation is optimal when building a structure on problematic soil.

Design Benefits

Piles made of plastic pipes have several undeniable advantages:

• Affordable cost;
• Protection of concrete from the destructive effects of groundwater;
• High rates of rigidity, strength and resistance to external factors;
• Small mass.

The disadvantages include the fact that plastic pipes can burst from expansion during frost.

The base of PVC pipes does not provide for the arrangement of a basement or basement, so its use for the construction of a residential building is not always justified.

Required Tools

In order not to waste time during construction work, it is worthwhile to purchase the required tools in advance:

• Shovel;
• Master OK;
• Hand mixer or concrete mixer;
• Building level and tape measure;
• Black marker;
• Solution containers (large buckets);
• Cord;
• Sledgehammer;
• Bulgarian.

Materials:

• Fittings (0.5 m longer than PVC pipes) at the rate of 3 pieces per pole and wire for tying;
• Crushed stone of fine fraction;
• Wooden pegs;
• Cement brand m300 or m400;
• The required number of external sewer pipes with a diameter of 110-180 mm.

After acquiring the necessary materials and equipment, you can start the installation work, which consists of several stages.

Preparatory process

It is necessary to start construction by determining the depth of the foundation. This factor depends on the type of soil, the level of groundwater and freezing. Depending on this, the columnar base is:

1. Unburied (up to 50 cm);
2. shallowly recessed;
3. Deeply buried (more than 150 cm).

In the process of preparation, it is necessary to clear the area of ​​debris, level the construction site and calculate the number of columns, taking into account the fact that the piles should be located at a distance of 2 m from each other (the greater the mass of the future structure, the smaller this distance).

At this stage, it is necessary to provide for the availability of electricity on the site, cut the fittings and pipes to the required length.

Marking

The markup is applied in a certain sequence:

1. Install pegs around the perimeter of the future base, indenting 100 cm;
2. Using a level strictly horizontally pull the cord between them;

   Marking on the site

3. At the intersection of the cord, it is necessary to drive a stake - this will be the center of future pillars;
4. At this stage, the cord is no longer required, it can be removed.

The cord will still be needed during the installation process in front of the grillage device.

Manufacturing technology of the columnar foundation

Further work will be divided into two stages, each of which requires responsible and step-by-step execution.

Well drilling and pile installation

1. According to the markings, wells are made using a drill. The depth of the well should be 25 cm deeper than the freezing level of the soil, and the width should be 7 cm more than the diameter of the PVC pipes. In view of possible collapses, it is not worth drilling all the wells at once, it is better to make them sequentially;
2. Using a shovel or a special nozzle on the drill, an extension is made at the bottom of the well with a height of 25 cm and a diameter of 12 cm;
3. A pillow is made at the bottom of the well from a mixture of sand and gravel 20 cm thick;
4. The pipe is inserted in such a way that its surface almost coincides with the lower plane of the grillage.
5. Using a level, mark on the pillars the location of the lower part of the grillage and, if necessary, cut off the piles according to the markup;

The verticality of each pipe must be checked with a level and then fixed.

Pipe concreting

1. For convenience, pour the ready-made concrete solution into a container and pour 20 liters into the pipe cavity, it is necessary to raise it by 20 cm. Concrete, spreading along the expansion, forms a heel. Fill the remaining space around the support with soil and carefully tamp;
2. Insert a pre-welded frame of three fittings into the pipe so that their edge is 25 cm higher than the plastic pipe, if a reinforced concrete foundation is planned. If the bundle will be carried out with a tree, then the reinforcement should be installed below the edge of the plastic pipes by 5-7 cm.
3. Concrete must be poured in portions, with careful compaction of each layer using a vibrator or a metal rod. In the latter case, it is necessary to act with the utmost care so as not to violate the integrity of the plastic pillars;
4. Pour concrete mortar until it reaches the level of the pipe;
5. Completely fill the pipes with mortar, tamp, install a stud with a diameter of 10-12 mm (for a wooden grillage) into the pile and leave until completely solidified.

So that the solution does not dry out, raw sawdust is laid on the surface of the pillars and covered with polyethylene until the concrete has completely set.

Video: Foundation for utility room

Possible errors and how to fix them

If technology was violated during construction work, there may be negative consequences:

• Incorrect data on the mass of the house and an insufficient number of pillars can lead to a violation of the integrity of the walls. In this case, each pile will have to be strengthened;
• When the pillars fall through, a dig is made under them and a strip base is constructed, or all the pillars are fastened to each other with reinforcement after raising to the required level;

Independent production of a foundation from PVC pipes makes it possible to do the work yourself without involving a construction team, which will significantly save financial resources.

Foundation for the construction of plastic pipes

With a close location to the surface of soil water, deep seasonal freezing of the soil, a foundation is often erected for a columnar type building. In this case, it is expensive to build a tape or tile base, it is quite problematic, and their reliability is also inferior. It is quick, cost-effective and quite simple to build a columnar foundation from plastic pipes with your own hands. The polymer has a number of advantages, among which are the relative cheapness and ease of installation. The material is used to create pillars of different dimensions: length, diameter.

Column foundation device

A columnar foundation is a foundation consisting of pillars driven into the ground (or flooded). They function as supports. They bear the weight of the structure being built. All load through the pillars for the foundation is transferred to the ground.

The ends of the supports protruding on the surface are connected into one structure, constructing a grillage. The latter is built in the form of a frame, or a slab fixed on pillars.

To create supports, various blocks, bricks are used, or concrete is poured into the formwork. The form for the solution is made from different materials:

• roofing material;
• asbestos and plastic pipes.

The use of roofing material is the cheapest option. But its use does not allow pouring piles of the same dimensions. Also, the strength of such formwork is very low: when tamping, the roofing material can break.

Asbestos pipes as a form for bored piles are much more expensive than plastic ones. They contain substances toxic to humans that enter the body with dust during the cutting of the material into segments of the desired length.

Sewer pipes are used to create supports for structures of the following type:

• frame structures;
• houses from a bar, or processed logs;
• small and light buildings made of cellular concrete: garages, verandas, sheds.

There are such types of columnar bases according to the level of deepening of the grillage:

• buried;
• low;
• high.

Construction of a high grillage

A recessed type of columnar foundation involves the construction of a grillage below the soil level. A low base is laid flush with the ground, and a high one is built above the ground.

The grillage is buried in the ground to avoid blowing the building under the floor. In this case, the entire load from the structure still falls on the supports, and not the ground.

On unstable soils or with the possibility of flooding, the base is made high.

Plastic pipes designed to create a sewerage system inside and outside the structure are the best option for formwork for pouring a columnar foundation at a price and quality. With their help, the foundation for the building can be quickly erected.

Advantages and disadvantages of the foundation

Plastic is a versatile, inexpensive, chemically inactive building material. A columnar foundation made of PVC pipes can be easily erected on your own with minimal knowledge and skills on this issue. The advantages and disadvantages of this design are shown in the table below.

1	the material is easy to cut into fragments of the required length, the pipes protect the concrete from soil water	columnar base eliminates the possibility of building a basement, cellar, or utility room, under construction
2	does not require the use of lifting equipment	pipes can burst when the temperature drops below -15 degrees, for this reason, their parts located above the ground are insulated and lined
3	the use of pipes allows you to build a foundation as soon as possible and quickly start building a house or other building	the allowable load on one column is approximately 4 tons, therefore, relatively light structures are built on this basis
4	reduced costs for the construction of the foundation due to the lower cost of working materials and savings on the services of builders, earthworks: compared to the monolithic type, they are almost 3 times less	the location plan of the foundation supports should be drawn up with maximum accuracy, because when any of them subsides, the entire structure is deformed, up to the complete destruction of the erected structure
5	the building erected on supports towering above the ground is protected from flooding that can occur during rains and floods, also in this case it is easier and faster to supply and maintain communications in the future	compared to a strip or slab base, a columnar one is relatively short-lived: its service life is from 50 to 80 years, and for a monolith - 100-150 years

Column-type base by pouring cement-based mortar on PVC pipes can be built quickly. Plastic formwork has good performance, protects concrete, and is cheap. In this case, all the work can simply be done by hand.

Grouted sewer pipe support

Preparatory activities

Construction work begins with the preparation of the necessary tools, the purchase of the required building materials. This is done in order not to be distracted in the future. The construction site area is also prepared accordingly.

In the process, you will need the following tools:

• shovels: bayonet, shovel;
• Bulgarian;
• tape measure, level, marker, cord;
• several containers;
• heavy hammer;
• a pan or concrete mixer, or a mixer;
• Master OK.

You will need the following materials:

• wooden blocks on pegs;
• reinforcing bars and wire for their knitting;
• small gravel;
• cement (M300 or M400);
• sewer plastic pipes with a diameter of 110-180 mm, depending on the weight of the structure being created and the number of supports.

Preparation of a working solution in a concrete mixer

Inside one column, before pouring, 3-4 reinforcement bars are inserted. The length of the pieces should exceed the same parameter of the pipe by 50 cm.

The preparation of the territory is carried out as follows:

• determine the depth of soil freezing at the construction site, the level of groundwater;
• carry out the cleaning of the site from vegetation, debris, stones;
• level the surface for construction;
• mark the place for construction with the help of pegs, cord;
• note the location of the supports: first the corner piles, and then all the rest.

Based on the measurements taken, they determine the depth of drilling, the number of pillars, and clearly work out the plan. If necessary, fittings and pipes are cut into pieces of the desired length. The distance between the wells is chosen from 1.5 to 2.5 m.

Using a concrete mixer and special drilling equipment will greatly speed up the whole process. Pipes are best used for outdoor sewage (orange). At almost the same price as the material intended for laying indoors, they have a larger selection of available sections and is in the range of 110-500 mm.

Building a base from plastic pipes with your own hands

The technology for creating a base from plastic pipes is not difficult. You can do all the work yourself. Do-it-yourself PVC pipe foundation is built in the following sequence:

• in places marked with pegs for supports, wells of the required depth are drilled, with a diameter of 5 cm more than that of the inserted pipe;
• increase, for example, with a shovel, the area of ​​​​the sole of the support;
• at the bottom of the hole, a sand-gravel or sand cushion is covered with a layer of 15 cm;
• in wells, cut pipes are installed according to the level;
• reinforcing bars with a diameter of 10 to 12 mm are inserted into them;
• then the solution is poured in 2 approaches: first - a broadened base (for this, the formwork is raised), and then - I concrete the rest of the pipe to the top;
• after they mount a hinged or pour a monolithic grillage.

Scheme of drilling a well for supports of a columnar base

For the erection of a monolithic grillage, formwork is set up and up to 0.5 m of reinforcement is left from the supports. If it is planned to install a hinged structure, then special fasteners are installed on the poles.

Wells can be drilled all at once, if only the ground is sufficiently stable. When it crumbles, it should first be installed in the holes and poured into the pipes, and then proceed to the installation of the next support.

Self-construction of a columnar foundation from sewer pipes is shown in the video below.

A columnar foundation made of plastic pipes is a suitable option for light structures on unstable soils with close groundwater and deep freezing. Its construction, in comparison with the bases of tape and slab types, takes less time, is less laborious, cash costs are also reduced several times. To achieve a good result during work, you should correctly draw up a project, accurately calculate the number and dimensions of the supports, including their location.