Strip foundation for a brick house

Brick house
The foundation is the main structural element of any building. A brick house is no exception. Without a reliable load-bearing foundation, it is impossible to build a durable and comfortable home. An incorrectly laid foundation of a building can cause many troubles, including the destruction of the entire structure. Therefore, it is so important to choose the right and high-quality foundation for a brick house. This article is intended to answer the questions of which foundation is better and how it is poured.

Construction of a foundation for a brick house.

Choosing the type of foundation for a brick house
Construction of a strip foundation for a brick house
Pile foundation
Slab foundation for a brick house

The basis of any construction project is the foundation. When building it, you need to approach the work very responsibly, because the quality of the entire building depends on how it is built and how the type of foundation is chosen correctly. The foundation for a brick house can be of the following types: strip, pile and slab.

Strip foundation for a brick house.
If the house is planned to have a basement or ground floor, then it will be necessary to dig a foundation pit, but if there are none, then simply trenches for the foundation will suffice.

Formwork for installation.

Foundation formwork for a two-story brick house.

The formwork must be constructed so that it can be installed and removed easily without damaging the foundation.

Some tips for installing formwork, since the quality of the resulting foundation largely depends on its quality. The formwork should be easy to install and just as easy to remove, so as not to damage the finished foundation. Its strength must ensure that it maintains the shape specified by the design. Wooden or steel materials are used to make formwork. For wooden formwork, waterproof plywood, particle board or fiberboard and dry coniferous wood are used, the boards of which must be smoothly planed and have a width of no more than 15 cm. Plywood, fiberboard and chipboard are good to use in the manufacture of curved sections of the foundation. Metal formwork has special fastenings, is easy to assemble, durable and easy to dismantle. You can buy it, or better yet try to rent it.

The reinforcement makes the foundation structure stronger and more flexible, and provides a certain margin of safety in the event of an increase in the weight of the residential part of the house. The reinforcement frame is assembled in parts from ready-made spatial fragments, manufactured in advance according to the foundation design. Each laid fragment should not interfere with the laying of the next one. As they are laid, the fragments are fixed and welded together until a single monolithic structure is obtained. After laying the last section, the readiness of the reinforcement frame with formwork is checked and the pouring of the foundation begins.

Choosing the type of foundation for a brick house.

When planning the foundation for a brick house, you should take into account its large mass. Therefore, not any foundation is suitable for these purposes, but only one that can withstand such a load. For a brick house, it is not recommended to use shallow and columnar foundations, as they are unable to withstand the load of a brick house. Therefore, it is better to choose the strip, pile and slab type.

Each of these foundations requires compliance with certain rules and regulations. Please note the following:

Scheme of foundation types.

physical and mechanical characteristics of soil;
soil freezing depth;
relief;
ground water level.

Only a specialist can determine the type of soil, and after his conclusions, you can already choose a foundation suitable for your soil. If you have sandy, non-heaving and dry soil, you need to build a strip foundation. If your site has heaving, mobile, subsiding soil, you need to choose a slab foundation. And almost all types of soil are suitable for the construction of a pile foundation.

What should it be?

The main requirement is strength and resistance to all types of loads . Therefore, concrete of a strength grade of at least 250 is used for the foundation (read more about concrete grades for LF here).

Other materials – crushed stone, sand – should also be of high quality. It is necessary to strictly observe the proportions when composing the concrete mixture, and if you are not confident in your capabilities, it is better to buy ready-made concrete.

Before laying the foundation, a geological study of the site must be carried out. To determine the type of soil and the height of groundwater. These are important factors influencing the parameters of the belt, in particular its depth.

Construction of a strip foundation for a brick house.

A strip foundation is usually built under a house made of concrete, brick or stone. It is distinguished by its simplicity and at the same time can withstand heavy loads. The foundation strip is placed under the internal walls and along the entire perimeter of the building. Another important advantage is the possibility of constructing a basement or ground floor, where the walls will be a foundation strip.

There are two types of strip foundations – monolithic and prefabricated. Monolithic is a solid concrete structure with increased strength characteristics and ease of construction. Its main disadvantage is the long time it takes to harden and gain strength. It consists of concrete or stone blocks and is built quickly, but requires special equipment and additional labor.

To build a strip foundation, the following materials and tools are required:

Strip foundation for a two-story brick house.

Scheme of a prefabricated strip foundation.

gravel;
sand;
roofing felt for waterproofing;
concrete;
wooden boards for formwork 50 mm thick;
reinforcement bars from 6 mm to 10 mm;
shovel;
theodolite;
vibratory hammer

At the very beginning, you need to clear the area. After removing the debris, the top layer of turf is removed and a place for a brick house is marked. When marking, the angles must be strictly straight. Next, using an excavator or manually, a pit or trench of the required depth is dug. If a brick house is planned with a basement or ground floor, you need to dig a pit; if there are none, then just trenches. The dimensions of the trench and pit need to be made 1.5-2 m larger, which will provide us with the convenience of making formwork and pouring concrete. The bottom of the trench is leveled using a theodolite and the depth in all corners is checked.

If you are building a monolithic strip foundation, the bottom of the trench is first watered and then covered with a small layer of 200 mm of gravel and sand. Then everything is compacted with a vibrating plate. Next, the pillow is covered with waterproofing and poured on top with a small layer of concrete. If you are building a precast foundation. then the same thing is done, but the cushion and compaction are done only in the places where the concrete blocks are installed.

To build a prefabricated foundation, you will need the help of special equipment, since concrete structures are very heavy. Concrete blocks are installed and fastened with cement-sand mortar. The blocks are laid according to the same principle as bricks, the only difference is in size.

To build a monolithic strip foundation, formwork made of wooden boards is installed and secured with spacers. You can also use collapsible frame-panel formwork. During work, you need to constantly check the verticality of the walls. The height of the foundation above the ground should be approximately 40 cm, and even more for wet soils.

For high-quality insulation, roofing felt is placed on the bottom, the ends of which are brought to the top.

Foundation for a brick house.

Scheme of types of strip foundation.

Next, a reinforcement frame is created, for which rods up to 10 mm thick are used. Before welding them together, the rods should be cut to the required length. The finished reinforcement frame is lowered into the trench on pre-arranged brick supports.

Then the concrete is prepared and poured inside the formwork. Pouring takes place in several approaches and in layers of 15-20 cm. After each approach, the concrete is shaken using a vibrating hammer or shovel. This is done to eliminate voids. In order for the strip foundation to be strong, the consistency of the concrete mass must be of medium fat content . It does not flow around obstacles and requires some effort to distribute it.

After pouring, the strip foundation must be left until it dries completely. It may take 25-30 days. In the first days, the concrete needs to be watered a little so that it does not crack or dry out. After complete drying, the formwork is removed and waterproofing is carried out. For this, rolled materials are used, for example, roofing felt or any coating materials.

And at the very end of the work, the foundation is backfilled. This must be done with extreme caution so as not to damage the waterproofing.

Pile foundation.

Width of strip foundation for a brick house.
Pile foundation diagram.

The pile type of foundation is chosen in cases where a brick house is built on crumbling soils that are unable to withstand significant loads. When using this type of foundation, the load is transferred to denser layers that are located at a considerable depth. It consists of individual piles connected at the top by a reinforced concrete or concrete grillage, on which the walls of a brick house rest.

Such a foundation can be built on stronger soil, thereby reducing the amount of excavation work and materials used. Among the disadvantages of building this type of foundation is the use of special equipment and tools for drilling wells and driving them into the ground.

There are several types of pile foundations depending on the material used for construction. To build a brick house, it is better to use a bored reinforced concrete foundation with wide pile bases.

To build a pile foundation for a brick house, you need the following materials and tools:

Scheme of types of foundation for tying screw piles.

Scheme of types of tying screw piles.

concrete;
roofing felt;
gravel;
sand;
wooden boards for formwork 50 mm thick;
reinforcement bars;
shovel;
Boer.

At the very beginning of construction, it is necessary to clear the area, remove the layer of turf and make markings. The angles must be right. Next, a place for the piles is outlined. For this purpose, a special excavation is made at a step specified in the project. Now, using a drill, you need to drill holes for the piles in the marked places.

Next, the reinforcement bars are prepared, cut to the required length and welded into a frame. The height of the frame should be 30 cm above the ground level. This is necessary in order to then attach the frame for the grillage to it. After drilling is completed, a layer of gravel and sand is poured into the bottom of each hole. Next, a reinforcing frame is lowered into the pit and everything is filled with concrete. To create a monolithic structure and fill voids, it is necessary to periodically shake the concrete.

Then a reinforcing frame is made for the grillage, which must be attached to the pile frame. Then the formwork is made and placed around the grillage. A prefabricated panel structure can be used as formwork. It is easy to install and strengthen, and the grillage is of higher quality.

After installing the formwork, concrete is poured. The pouring is carried out in stages in several layers, while the concrete is compacted and shaken. All that remains is to let the concrete dry completely and gain strength. After 25-30 days have passed, you can waterproof the grillage and build brick walls.

We stretch the cord to the mooring

After removing the corners, you can proceed directly to laying the wall. In order for the entire row to be at the same level, we pull the mooring cord between two opposite rows, which we have laid out in the same horizontal line. For mooring, you can use either nylon thread, fishing line, or an analogue. The main thing is that it is durable and visible to you when laying. The mooring can be attached:

to order, if there are holes in it;
using staples and nails.

We have shown both methods in the figures.

The mooring is attached with a vertical indentation of 2-3 mm from the masonry, so that there is no contact of the mooring with the brick along its entire length.

If the mooring does not have holes, then you can follow the simple and most common way to install the mooring. To do this we need 1 nail and 1 staple for 1 corner. We insert the nail into the finished seam and tie a mooring to it. Then we insert the mooring into the bracket. We place the bracket with the mooring threaded through it on the brick along which we will make a row and press the bracket with a free-lying brick on top (without mortar). The staple can be a rigid wire bent in half. The figure shows in detail how this will look visually.

If the berth sags, then you need to install so-called beacons. For this purpose, 2 bricks are taken. The first is placed, taking into account the thickness of the seam, on a mortar or rod template (12x12mm), and the second is placed with a poke on the first brick. We insert a nail between the bricks, onto which the mooring is wound tightly.

Slab foundation for a brick house.

The simplest in design and construction is a slab foundation. It is a solid reinforced concrete slab on which the building rests. Its important advantage is that it is able to withstand loads during soil movement without damaging a brick house. Its construction is chosen if the soil on the site is heaving and subsident.

There are several types of slab foundations: shallow, shallow, deep. Their differences need to be considered in more detail. The non-buried one is installed directly on the ground. For a shallow foundation, the depth in the ground should be approximately 50 cm. They are also called floating. A deep slab foundation is installed slightly below the freezing point of the soil.

You can build a slab foundation from a solid or lattice slab, from prefabricated reinforced concrete beams and reinforced concrete slabs. One of the most cost-effective and simple slab foundations is the shallow foundation. It allows you to save on labor costs and materials.

To build a monolithic foundation, you need the following materials and tools:

Diagram of a monolithic slab foundation for a brick house.

Diagram of the construction of a monolithic slab foundation.

roofing felt;
Styrofoam;
crushed stone;
sand;
concrete;
boards for formwork 40-50 mm thick;
reinforcing bars;
shovel.

At the very beginning, you need to clear the area, remove the layer of turf and make an even marking. Next, along the entire perimeter, we excavate the soil at a height slightly greater than the future foundation. We level the entire surface and fill it with crushed stone and sand. We level the entire pillow and compact it well. Then we fill everything with a small layer of concrete.

Unlike other types of foundations, slab foundations require more thorough thermal insulation and waterproofing. Therefore, roofing felt or geotextile is laid on top of the concrete, and thermal insulation made of polystyrene foam or polystyrene foam is placed on top of it.

Next, formwork is made around the entire perimeter. It uses boards about 50 mm thick. Then we make the reinforcement cage. We cut the rods to the required length, and then weld them like a mesh.

The last stage of construction will be pouring concrete. This must be done in one go. The concrete should be well ventilated and left to harden for 20-30 days. To prevent concrete from cracking, it must be moistened with water for the first week.

Features of the bookmark.

When planning the construction of a brick house, it is necessary to study in detail and strictly observe the following rules:

The soil on which construction is carried out can be very diverse, and each has its own type of foundation.
The lower edge of the foundation should always be 20-25 cm below the soil freezing level.
Groundwater has a negative impact on the condition of the foundation, so during construction measures should be planned to combat it.
During construction, use only high-quality materials.
Carefully follow all construction technologies and safety measures.

A correctly selected, designed and manufactured foundation will allow a house built on it to stand for decades and serve many generations of its residents.

Do-it-yourself foundation for a brick house (ribbon view).

When choosing the type of foundation for a building structure, you should take into account the material used in the construction of the structure. The weight of the brickwork is quite large.

Pressure exceeding 2 tons can be exerted on one cubic meter of surface.

When deciding how to build a foundation for a brick house with your own hands, you should take into account the height of the building.

The designs for a single-story and multi-story building will be significantly different.

There are several types of foundation construction.

Ribbon design.

To arrange a strip structure, the strip is concreted along the contours of the perimeter of the building. Depending on the depth of location, two types of devices can be distinguished: recessed and shallow.

The first type is used for the construction of two-story buildings with brickwork. The second type is used for one-story construction.

When using a strip base as basement walls, you can use a plinth surface.

To construct a strip base, the following operations must be performed:

Digging trenches that match the shape of the building's perimeter. In this case, the wall thickness of the formwork material should be taken into account;
Laying a sand-gravel mixture at the bottom of the trenches and compacting the surface;
Laying waterproofing;
Arrangement of formwork. It is necessary to install spacers in it and check the verticality of the wall surfaces.
Production of a reinforcement frame, including steel or fiberglass rods. You should also provide for the installation of two reinforcing belts, above and below the strip base;
Laying the frame in a trench on brick or concrete supports to prevent the reinforcement from coming into contact with the ground surface;
Pouring concrete solution.

It will take 4 weeks for the structure to dry. During this period, periodic moisturizing is necessary.

Lay out the remaining rows

Then we lay the remaining rows using the same principle with bandaging of the seams (in our case, bandaging in half a brick). At the same time, we no longer place risks like on the foundation for the first row, but we make sure that the vertical seams across the row are at the same level. In the picture, this is an example of seams in the 1st and 3rd rows. You will find more detailed information about the types and methods of dressing seams in our article “All about brickwork. Dressing the sutures."

Further, according to this principle, all the walls of our building are exposed. Don’t forget to keep the face of the masonry clean and unstitch the seams until the mortar sets. Also, if reinforcement of the masonry is necessary, we determine how many rows we will do it (usually every 5-6 rows). © www.gvozdem.ru

Pile type devices.

The use of a pile or pillar structure is most suitable for soil with a fragile or excessively heaving surface.

The columnar foundation design, which includes wide support soles with a drilling device, is very popular.

Such a foundation has one main drawback - its construction requires the use of specialized equipment. The design is well suited for the construction of one-story buildings and all kinds of extensions.

When building a foundation for a brick house with your own hands, which has a pile structure. The following instructions must be followed:

First, you should clean and mark the area. Check the compliance of the base angles with the specified values;
Determine the places where the supports will be located;
Remove soil from the marked areas;
Drill wells;
Carry out the manufacture of a frame from reinforcement. Its height should exceed the ground level by 30 cm;
Pour the sand and gravel mixture into the well recesses;
Install the frame into the holes for the wells and fill it with concrete mortar.

It will take 4 weeks for the base to harden. When pouring a base of piles, the use of formwork will be required. The material can be simple boards or plywood covering.

Installation of a slab-type base.

The slab type foundation looks very impressive. It looks like it should require a lot of work. In fact, this type is the easiest to implement.

It is most suitable for soils characterized by severe heaving. Depending on the depth of location, there are several types of foundation structures.

To properly arrange a slab foundation you will need:

Clean the area, level its surface and mark it;
Dig a foundation pit. Its dimensions must exceed the dimensions of the base;
Pour the sand and gravel mixture onto the bottom of the pit and compact it;
Pour a small amount of concrete (for setting);
Lay waterproofing in several layers;
Make formwork. Install spacers and fasteners;
Connect the mesh for reinforcement;
Pour the concrete solution at one time;
Carry out periodic wetting of the base until it sets completely.

Slab-type foundations can be used for various types of buildings. The main advantages of such structures include their large size. As a result, the foundation better resists the load and distributes it between the corner surfaces.

Tools and materials

First, let's prepare all the necessary tools and materials for the upcoming work.

Tools:

Trowel (trowel)
Pick hammer
Shovel
Joining
Order
Cord mooring
Hydraulic level
Plumb
Building level
2 templates: metal rod 10x10mm and 12x12mm
Concrete mixer or trough
Gloves

! A detailed description of the tools can be viewed on our website www.gvozdem.ru in the article “Tools for bricklaying.”

Materials

Brick
For mortar: cement, sand, plasticizer or lime or Fairy
Masonry mesh for reinforcement

How to calculate the foundation.

When deciding how to build a foundation for a brick house with your own hands, you must first make the necessary calculations. The parameters of the foundation will depend on the weight of the structure being constructed. To determine the exact width of the foundation you will need to know:

Dimensions of the base surface for the building;
Thickness of brick walls;
Soil density;
The degree of soil freezing in winter.

To calculate the depth of the foundation, you need to multiply 0.8 m by the number of floors. Therefore, if the foundation is being built for a one-story building, it should be located at a depth of 0.8 m.

Depending on the type of foundation structure, the parameters will be calculated in different ways. For a strip-type base, it is necessary to choose a width greater than the thickness of the brickwork.

The structure must be located at a depth that exceeds the level of soil freezing.

When using a pile device, the depth must be at least 4 meters (in the case of a one-story building). If a structure with a large number of floors is being built, the foundation should be located at a depth of 8 meters.

The designs will also differ in the spacing width of the support pillars. When laying the foundation for a building with two floors, a step of 1 meter is used.

When laying the foundation of a one-story building, this value doubles. The width of the supporting surfaces must correspond to the diameters of the piles.

Here's an additional video, check it out:

To calculate the slab base, you should pay attention to the design features. When using a non-buried device, it is located directly on the surface of the soil.

If a shallow design is used. the depth of location should be 0.5 meters. In the case of a buried structure, it should be located lower than the freezing level of the soil.

Making corners

Now, using the knowledge gained, we set the corners brick by brick. The main thing is not to forget that the quality of the masonry of the entire wall will largely depend on how correctly the corners are set. Therefore, we use both an eye and devices that will help us in setting angles.

Using a plumb line, we check the verticality of the masonry. A plumb line is considered a very accurate device for checking the verticality of a surface. Probably the simplest and most accurate compared to the building level, which can sometimes fail. There is no point in using a plumb line when we have 1-2 rows of masonry laid, since it is difficult to determine by eye the discrepancy from the vertical in such a small area.

In the picture we have displayed 3 points equally distant from the masonry. Based on the fact that the distances in these segments are equal, we can conclude that our masonry is laid out exactly vertically. To work with a plumb line, you, of course, need to have a good eye, since we determine all the distances between the masonry and the plumb line visually, by eye.

To maintain identical horizontal seams and to control the horizontalness of the masonry, we recommend using rows. They will be especially useful for people with little experience in bricklaying. The orders are established strictly vertically (plumb or level) and are attached to the masonry using U-shaped brackets. The distance between the order divisions is 77mm for a single brick (brick thickness 65mm + seam 12mm) and 100mm for thickened bricks (88mm + 12mm).

Laying a foundation for a brick house.

Building a house yourself is a very responsible process, because many structural elements require precise calculations and care when working. Clinker buildings are especially popular now; they look presentable and stylish. You can make a pile, strip or monolithic foundation for a brick house with your own hands, without involving specialists in servicing the project.

The supporting structure can be of various types; the appropriate option is selected based on the financial capabilities and design features of the brick house. In addition, various soil indicators (type, water level, freezing boundaries) and landscape characteristics (presence of hills or depressions on the site) are also taken into account.

Builders use the following types:

Slab;
Tape;
Pile, columnar, screw.

To arrange a slab foundation, a very simple technology is used - a solid slab is mounted in the place marked for installation of the system or a solution is poured to obtain it. It can be normally or shallowly buried. At the same time, it is recommended to use it for a house without a basement, so as not to disrupt the load-bearing capacity of the slab. The use of a monolithic foundation is justified for large-scale construction of a heavy brick house with an attic, balconies or other extensions. Let's say, two or more floors with a large number of different insulation materials and a heavy roof covering (ceramic tiles, slate). It can be made either normally buried or shallow, but in this case it is necessary to separately calculate the overall dimensions of the future slab and its load-bearing capacity.

Monolithic foundation for a brick house.

A recessed strip foundation is ideal for both an extension and a one-story or two-story brick house. Its construction is carried out on sandy soils, less often on clay soil or loams. Unlike a slab foundation, a basement or other necessary extensions near and under the building (garage, storage room, etc.) can easily be built on such a foundation. The advantages of this supporting structure also include the fact that it is easy to repair.

Strip foundation for a brick private house.

A columnar bored foundation with a grillage for a brick house should be chosen if the building is located on problematic earthen areas. For example, it stands on water (swampy soils) or on an uneven area (“ragged” landscape). The pile-grillage project is very convenient and quick to install, but SNiP imposes extremely serious requirements on it. Due to the fact that the supports cannot withstand heavy weight (they can move apart or change angle under the influence of external factors), they are more often used for a wooden house than a brick or block one. The convenience is that this is the most affordable option. The pillars can be pipes filled with construction waste and mortar, FBS blocks, reinforced supports with brick lining.

Pillar foundation with brick lining.

A significant argument in favor of piles is also the price of this structure. On average, the cost of such a system is two times lower than that of a monolithic or tape system, but at the same time it is practically not inferior to them in quality and reliability.

Video: foundation on screw piles

Device.

The installation of each foundation for a brick house is carried out in accordance with the requirements of SNiP and the capabilities of the contractor. Let's look at step-by-step instructions for different carrier systems.

Monolithic foundation for a brick house :

First of all, a project is prepared. The documentation takes into account the terrain features, geodesy requirements and other parameters that affect the durability of the structure. Drawings are being prepared according to which the territory will be marked;
A trench is dug along the marked lines; it is especially important to ensure that the corners are even. Otherwise, the support will “float” and the building will begin to collapse prematurely - 5–7 years after completion of construction;
The depth of the pit should be 20 centimeters greater than required, since a sand or crushed stone cushion is taken into account;
Fine crushed stone or sifted sand is poured onto the leveled surface of the base, and the embankment is compacted. After this, a thin layer of concrete is poured onto the pad. It is recommended to discuss its dimensions with a specialist, since parameters for different objects may vary;
To build such a structure, it is necessary to additionally insulate and isolate the slab from moisture, so a waterproofing film is laid over the pouring;
Along the entire perimeter of the future pouring, it is necessary to install formwork that will prevent the solution from spreading;

Reinforcement of a foundation slab for a brick house.

For the construction of that system, the presence of a reinforcing belt is also very important. To create it, the reinforcement is cut into equal sections and installed over the entire area of the base. It welds together. It is acceptable for the ends of the rods to protrude 5–10 centimeters from the solution;
All that remains is to fill the support and cover it with film to harden (so that dew and rain do not damage the solution).

In terms of the construction process, a strip foundation for a classic brick house is very similar to a monolithic one, with the exception of pouring the entire area of the building. To create it, it is enough to lay the solution only around the perimeter of the building.

The area is marked and cleared of various debris, stones and trees;
Trenches of the required width and depth are dug using an excavator or manually. These parameters must be clarified in advance with surveyors in your region;

Marking a strip foundation for a brick house.

The thickness of the sand cushion is 20 cm, this parameter is taken into account when preparing the trench. Make sure that only fine crushed stone or sifted river sand is used;
Similar to a monolith, you will need to equip the foundation with waterproofing. To do this, film, roofing felt or other available materials are laid at the bottom of the trench;
Next, the base is reinforced. Metal rods are installed in the centers of the corners and welded together. They are connected to each other, forming a metal belt around the perimeter;

What kind of foundation is there for a brick house?

Depending on the chosen technology, you can fill the entire tape with a clean solution or first lay blocks in it and then treat it with the solution;

Options for installing a strip foundation for a brick house.

After pouring, you need to wait about a week for complete hardening.

Strip foundation for a one-story brick house.
Bored and pile foundations are used when any other is not suitable. It is universal, quickly installed and can withstand fairly heavy loads. The structure consists of separate supports (piles), which are connected to each other by a grillage (concrete strip). But, despite the fact that the foundation itself is very cheap, to build it requires the use of special drills that will make holes in the ground for the columns. This construction process is carried out only by professionals and accounts for more than half of the estimate for the entire construction.

The site is prepared and marked. Piles are necessarily placed at every angle and intersection of walls, but they can be installed more often for greater rigidity of the building. For example, at each center of the wall;

Columnar foundation with grillage.

Next, holes are drilled. An important feature is that the hole in the ground should be smaller in diameter than the pipe. If the width is slightly larger or matches the piles, the base may become loose;

Drawing of a foundation support for a brick house.
The bottom of the holes is compacted with a cushion of crushed stone and sand, the average size is up to 20 cm;
A metal reinforcing belt is installed in each hole. It is made from reinforcing bars welded together;

Approximate dimensions of the foundation for the house.

A pipe is installed on top of the resulting mesh. It will be filled with cement regardless of whether a monolithic structure or a bored one is used, therefore, so that it can be raised after completion of the work, it is lubricated inside with oil or other solution;
A stone, rubble, crushed stone is thrown into the pipe, or a solution is simply poured. Due to its small area, its hardening time is much faster than that of tape or monolith;
The pipes are removed and formwork is placed on top of the pillars. Filling and reinforcement are carried out in the same way as when installing a strip foundation for a brick house.

Recommendation: A good review article, from it you will learn the general concept of a strip foundation for a brick house. Pay special attention to the soil and weight of the house; if there is an imbalance, the house will shrink and you will lose money. We kindly ask you to be extremely careful.