To raise any construction, you must first make the base for it. A columnar foundation from pipes is an economical option that do not require large labor costs.

What is a column foundation, its strengths and weaknesses

For its arrangement in the soil, special supports are bought, the gap between which is from one and a half to three meters. They are installed in the corners of the structure, as well as in those places where walls and partitions intersect.

When building such a type of foundation, much less materials is spent than it is required for other species. In addition, there is no need to dig trenches or pitchers, it is enough to drill a well to each support.

At least a columnar foundation and requires less forces and funds when construeding, it does not suffer from it.

A columnar foundation has its advantages and disadvantages. Benefits other than those listed above include:

1. After equipping this type of foundation, a person will be able to continue building a house after a week. In case, for example, with a tape foundation, it is possible not earlier than in a month.
2. Because A gap of 200-300 mm remains between the house and the soil, the probability of flooding due to rain is due.
3. Sewerage, plumbing and other communications are carried out to the house on such a foundation much easier.
4. Aesthetic appearance.

But also exist in a bar foundation and its drawbacks, for example:

1. It is possible to build buildings relatively small weight.
2. Lifecycle - only 70-80 years.
3. In the houses on a column foundation there is no possibility of arrangement of basements and cellars.
4. For the construction of houses on a column foundation, a plot is not suitable with large drops in height, as well as with movable soil.

According to the manufacturing material, the support can be the most different, for example:

• concrete;
• asbestos;
• plastic;
• metal;
• asbestos-cement;
• brick;
• wood and others.

Of these, concrete and asbestos-cement are considered the most reliable, because:

• differ in high strength;
• do not spread under the severity of the construction or under the action of low temperatures;
• installation progresses faster.

Column foundation from asbestos pipes, its advantages

The advantages of asbestos pipes include features such as:

• resistance to aggressive chemistry;
• not afraid of frost and dampness;
• are not electrical conductors;
• easy installation;
• infertility corrosion.

Even more qualitative is the column foundation from asbestos-cement pipes. Such supports consist of a mixture of Portland cement and asbestos.

Columnated foundation from plastic pipes

A columnar foundation from PVC pipes is the cheapest, but at the same time no less reliable. Usually used pipes for sewage 2 m long and a diameter of 20 cm. The main advantages are:

• lack of corrosion;
• resistance to frosts;
• low weight and easy transportation;
• if necessary, the size is adjusted using a conventional saw;
• long service life;
• inconsistency of aggressive chemistry;
• sufficient reliability and rigidity;
• a wide selection of sizes both in length and diameter;
• when the soil is frozen, the smooth surface of the support gives it the opportunity to slide freely.

Column foundation made of metal pipes

Metal pipes are considered the most durable, but they are quite expensive. Another lack of metal is corrosion exposure. If it is decided to use this type of support when construction, you should first treat them with special means, otherwise the service life will be reduced to 20 years.

What depth you should lay a column foundation

When calculating the depth of the foundation, the following factors should be taken into account:

1. To avoid deformation in the future, you need to find out what depth the soil is freezing in a particular region. The foundation should be equipped below this level.
2. Features of the soil. In this case, the most suitable is sandy soil. His carrier's ability is high and moisture, he does not accumulate. On or peat soil, such a foundation cannot be erected, as a last resort, it will be partially replaced by sand. If there is groundwater not far from the surface of the earth, it is necessary to equip drainage and waterproofing.
3. It is also necessary to calculate the weight of the structure itself, the load from people living in it, at least approximately. These indicators should add the weight of the supports themselves.

How to make a column foundation from pipes

It will take:

• shovel;
• supports;
• cement;
• sand;
• rods fittings;
• gravel;
• measuring supplies;
• machinery for making and mixing concrete.

Sequence of work:

1. Prepare the site on which the foundation will be built. To do this, align the surface of the soil, make marking according to the project. Mark the points in which pipes will be installed. Drop the pits of the same diameter and the desired depth. Now mix sand and gravel and pour it there. This mixture will serve as a peculiar pillow.
2. Place the supports around the perimeter of the construction, pour with sand about 300 mm and sink. Follow the strictly vertical position of the pipes. They should not bend. Use the construction level to control.
3. Forming the foundation, in the cavity of the pipes, place the arm of the reinforcement, the length of which is 600 mm + the length of the support, and the gap between them is 70 mm. The number of rods is taken depending on the thickness of the pipe.
4. With the inner and outer sides, pour the concrete mixture. Give her to open for 24 hours, after putting off the part of the well soil and continue the pouring of the pipes with concrete. After its hardening, pour the well to the end and sink the ground.

The most common errors in the arrangement of the foundation of pipes

In such a responsible case, as the construction of the foundation, it is impossible to allow errors that may lead to irreparable consequences in the future. The most frequent of them:

• incorrect calculations regarding the required foundation depth;
• outlook, swallowed at different distances;
• uneven distribution of loads on support;
• application of low quality materials;
• construction of a column foundation in unacceptable conditions, for example, on the unsuitable soil.

What you need to pay attention to the construction of the foundation

1. If the primer on the site is bunched, then equip the foundation, build a house and put it into operation is necessary for one season. If the foundation on such a soil will remain winter without a load, by the spring it is most likely deformed.
2. Also, the deformation often occurs in the absence of heating in the winter, if the structure has not been operated. It is best to start a bookmark the foundation when the soil fills, and the groundwater will be lowered as low as possible. And for construction, the most good time is summer and the beginning of autumn.

As can be seen from the above process, in order to build a column foundation, there is nothing complicated. This task is ranked even for not too an experienced builder. Below, those who wish can watch a video illustrating this article.