Pile foundation with his own hands: step by step instructions, video

Apparatus pile foundation with grillage

• increased soil density. applying pile foundation you can reduce the amount of earthwork. Also reduce the preparation costs: excavation, the hiring of freight transport, export of excavated soil, backfill, concrete and other purchase.

Pile Foundation has several varieties: pile-rostverkovy, pile-helical pile-tape. Advantages and disadvantages of each type have, look at them in more detail.

Rostverkovy pile-foundation: pros and cons

Application of pile-rostverkovogo base has both positive and negative sides. The advantages of such a foundation:

• It allows the construction of virtually any form of soil;
• increased stability;
• increased load capacity (allows you to hold the roof and walls with a fairly high specific gravity);
• efficiency (no need to use a ready-made solution, you can make it yourself);
• monolithic base enables precipitation of the whole structure in the case of soil shrinkage;
• It does not require special preparation of the construction site (reducing costs by reducing labor-intensive work);
• providing a natural aeration structure entire bottom plane (reduced humidity, condensate is removed);

Steel pipes with nozzles and blades for screw-pile foundation

• inability built cellar or basement space (this kind of foundation used exclusively for lightweight and medium-weight structures);
• calculation accuracy (error in the calculation result in deformation of the supports and cracks in the building). Order calculation of pile-foundation rostverkovogo specialists is not cheap. Consequently, the total price of the work will increase significantly.

Screw pile-foundation: pros and cons

This technology is known since the last century, so its pros and cons have long been studied. Benefits:

• low price-helical pile foundation, which is much cheaper monolithic or tile;
• High-speed construction (no need for a ground leveling or trenching);
• minimum soil disturbance;
• absence of vibration (the possibility of constructing buildings near monuments, monuments, old trees);

Scheme pile foundation with grillage

Pile-strip foundations: pros and cons

Fairly common type of foundation, which also has its own specific features. Benefits pile-strip foundation:

• It can be built in areas with complex land topography;
• efficiency (minimum number of operating equipment and human resources in the construction of structures);
• the ability to withstand shocks and weak ground motions;
• Piles can be done independently, using only the available material;
• erection speed.

Related article:

How much is the foundation for a detached house: the calculation, the cost and the procedure works. Types and varieties of foundations. How to pour the foundation under the house with his own hands, a photo and video of the process.

Disadvantages pile-strip foundation:

• the need for a detailed geodetic measurements;
• individual calculation of length, thickness and depth of each pile;
• the inability to create a basement;
• mandatory insulation works underground;
• It used exclusively for the construction of low-rise buildings (maximum of three floors).

How to build a pile foundation with his own hands: step by step instructions, video

Currently, the cost of any construction work has increased significantly. Therefore, many owners solve the problem of the construction of the foundation of its own and all sorts of materials at hand. Let us consider in detail the main points of the construction of three types of pile foundation.

Mounting bracket connecting structure with a pile

Basic rules of construction of pile-foundation rostverkovogo own hands: step by step guide

This type of foundation has a characteristic structure of the concrete base. It fixed beam that is poured from concrete and reinforced armored elements. This single system consists of supports (piles) and grillage.

The support function is performed poles round or rectangular shape. Poles are immersed in a specially calculated depth. That they held all the weights of the building. Grillage - a monolith, which unites all of the installed piles.

Rostverkovy pile-foundation is quite possible to build your own, because there is no need to excavate. In order to drive a support into the ground using special pinch device. After the final installation of piles, their cut flush. Then carried overall grillage compound that provides uniform loading on each individual bearing.

Helical pile foundation sectional

Photo of pile-foundation rostverkovogo show it much better than any detailed description. Often, the foundation supports are hollow metal tubes inside. This makes them easier compared with other types of piles. They are easier to score at a considerable depth. To enhance sustainability - into the poured concrete.

Important!Grillage in this case serves as a reliable and rigid base for the next phase of construction - masonry walls.

Raft foundation can be done in two ways:

1. Collect of reinforced concrete elements.
2. Pour monolithic tape.

The process of screwing the drill bit and injecting liquid concrete under pressure

For the construction of the foundation with his hands better to choose the second way - monolithic grillage. This will greatly facilitate the task of the concrete pouring. Installing weighty concrete blocks will require additional manpower and equipment. The sequence of actions is as follows:

• There is a small space between the ground and the lower limit grillage. This will help prevent the entire structure from the swelling;
• Apply marking the future location of piles;
• drill a well and install the piles;
• should be put on top of the formwork;
• Formwork mounted inside the reinforcing cage. It is necessary that he was completely immersed in the concrete mix. For this purpose under the lowermost rods should enclose small bars;

Carefully crafted from corrosion screw pile can be reused

• protruding from the support rods must be connected to rostverochnym reinforcement cage. This will provide a base greater reliability and durability;
• then raft foundation can be poured with concrete. Concreting produce layers to avoid air pockets.

To choose the right foundation view, We must proceed from the approximate weight of the future house. Rostverkovy-pile foundation has a sufficiently high load limits, so it is suitable as a foundation for buildings of aeratedPanel-mounted frame houses. Not recommended to use this type of foundation for high-rise buildings because of low resistance to overturning loads encountered on moving ground. The best option is to use a pile-rostverkovogo foundation for aerated concrete.

Useful advice!The width of the pile cap should be slightly greater than the width of the walls of the future structure. This will add to the stability of the building.

Calculation Example pile foundation with grillage

Total number of piles and their pitch is calculated for the construction of one-storey building, having a size of 7x7 m.

The approximate weight of consumables (roof, beams, paneling, etc.) is 25000 kg.

Payload: 7h7h150 (received value for premises) = 7350 kg.

Snow load: 7h7h180 (constant) = 8820 kg.

Calculation of the total mass of the load on the foundation: 25000 + 7350 + 8820 = 41170 kg.

This value must be multiplied by a safety factor of 1.1. We obtain 45287 kg.

Now we have to divide the resulting quantity by the load size per one pile (e.g., helical): 45287/2000 = 22.6435. After rounding, we get 23. This amount of support you will need. Step installation - 1.2 m.

The foundation on screw piles with a metallic grillage

Basic rules of construction of pile-strip foundation with his own hands: step by step guide

If the land on which you have decided to build a house, has a difficult terrain, you better to use a pile-strip foundations. It consists of a tape (grillage) and piles. The technology of construction of this type of foundation is not very complicated, so it can be done and with his own hands. To perform this operation, please observe the following rules:

• make markup. To do this, type in the bars at the corners of the future structure and pull the cord between them;
• determine the location of the piles;
• dig a trench under the tape;
• Drill the holes at the bottom for piles;
• set the dug pit asbestos cement pipes, heaped in which approximately 30 cm of sand;

Rostverkovy pile-foundation is usually applied on the loose, water-saturated soils

• Organize thorough waterproofing piles using roofing felt;
• set in each tube several metal rods. Rods must rise above the soil surface for 20 cm;
• each tube concrete pour, avoiding the occurrence of air pockets;
• after the concrete stiffened tape mounted. For this design the bottom bars spread in a thickness of 5 cm. Then make the installation of special nets. grid elements securely bound with elements of support reinforcement;
• set formwork (wooden boards, which are strengthening struts and struts). Decking should be slightly greater than the height of the future plinth;

Useful advice!In order to give additional security wall formwork, fasten them with stakes driven into the ground (on the outside and the inside). The tops of the stakes should be firmly wired.

• concreting. Pour concrete need to tamper with the periodic, leaving no empty seats.

Located under the foundation sand bag - simple layer of sand

Calculator-screw pile foundation

According to reviews, the pile-helical foundation is better to use for the construction of residential and non-residential premises on wet soils.

We calculate the required number of piles in the example. Initial data:

• pile diameter - 40 cm;
• The estimated mass of the house - 80 m;
• bearing capacity of soil - 5 kg / cm2.

The calculation formula is:

Fsv = (πd2 / 4) × R.

The load on one pile: 3.14 (constant value) x 1600 (diameter squared) = 5024.

Graphic image of a house on pile foundation

The resultant value is divided by 4 (a constant) and multiply by the amount of the soil bearing capacity: 5 x 5025/4 = 6280.

The required number of piles: 80t / 6280 = 12.738. Rounding the value obtained.

You need 13 piles.

Remember that for the proper construction of pile foundation, the calculation of the number of piles is a must. Erroneous calculations lead to cracks in the house and the gradual destruction of its walls.

Reinforcement pile-tape strip foundation

Basic rules of construction of the helical foundation with his own hands: step by step guide

To build a house without a basement and plinth should opt for screw foundations. It is a pile that are screwed into the ground as screws. Not recommended for soil containing hard rock. How to install the screw piles for the foundation of their own hands - a video clip will more vividly. This video can be easily found on the Internet. The process of erection involves the following steps:

• We determine the number of required supports and the amount of load on them. Load Calculation of screw piles for the foundation is done according to the formula: x area of ​​the house (40 + 15hV), where B - the height of the facade of the building;
• make marks on the plot with the help of stakes and cord;

Drilling of the well under the pile

How to make a pile-raft foundation with the screw

Grillage - this is part of the foundation, which rises above the ground. It is designed to distribute the load on the pile design. For the manufacture of reinforced concrete grillage use or metal beams, which are combined into a unitary structure of the pile. To properly build a raft foundation, you must comply with the following sequence:

• erected formwork;
• fit fittings. Her carefully strengthened, in order to avoid possible bias;
• poured concrete. Make sure that there is no leakage outside the casing;
• air is discharged from the concrete. This should be done using a conventional pin;

The manual process of screwing the screw-driving

• ready grillages give time to cool. To this end, it is covered with plastic wrap. During the week it is necessary to periodically remove polyethylene and watered structure;
• then removed the formwork. Grillage checked against the size and shape.

To build a strong and safe home, you need to qualitatively build its base. Before the construction of the first principles, carefully read the bookmarks of the building and the basic rules of installation. Observing all the necessary technology, you will cope with the construction of an independent foundation.