Strip foundation for a fence made of corrugated board. The foundation for a fence made of corrugated board as the optimal tape option. Foundation decoration options

What is a fence strip foundation? It is a reinforced concrete tape with pole holes. The size of the strip foundation is of two types: 400x600mm for a fence with brick pillars and 250x500mm for a fence with iron pillars. The depth of the holes can be up to 1.5 m from the base, and the diameter is no more than 250 mm. To begin with, a trench up to 500 mm deep and up to 500 mm wide is dug around the perimeter of the future fence. Then holes are drilled for posts with a step of 2.5 - 3.0 m. The bottom of the trench is covered with sand and tamped. After that, formwork is prepared from ordinary planed boards, fastening them together. Spacers are installed outside the boards. It is good if the upper (finishing) boards are fastened together from above. Then, 4 horizontal reinforcing bars of 8-10 mm are placed in the resulting frame made of boards, fastened by welding with transverse and vertical bars with a step of 50 cm. The finished frame is additionally tied with wire together. Further, fence posts are inserted and aligned into the holes and attached to the reinforcing belt by welding through additional fittings. And the upper part of the pillars can communicate with each other with lags. Everything is ready for pouring concrete. As a rule, concrete of the M-200,300 brand is used. Every 20cm of concrete must be tamped. After 3-4 days, the strip foundation for the fence with turnkey pillars is ready.

Price table per meter for strip foundation and brick fence posts

The process of making a foundation tape and concreting pillars.

The term "strip foundation" means a monolithic strip made of concrete mix. The calculation of its width and depth may vary depending on what type of fence is planned to be erected - brick or from a professional sheet.

Often, the width of the structure is 250-400 mm, and the depth is 500-600 mm. The fencing array is reinforced with reinforcing rods with a diameter of 8 to 14 mm. Reinforcement is required if you plan to make a columnar fence, provoking an uneven load.

Features of the device strip foundations

Among all types of fencing foundations, strip foundations are considered the strongest, most reliable and easiest to install. You can lay a brick fence, made of profiled sheet and even heavy metal forging on it.

What should be the foundation for a fence made of brick and corrugated board?

To build a brick fence and a corrugated sheet fence, a different approach to the foundation is required. As a rule, the brick type requires a base width of 40 cm, and a height of 40 to 50 cm. It should go 30-40 cm deep into the ground. The rest rises above the ground. Mandatory reinforcement of the structure is used to avoid its subsidence and deformation.

How to calculate the foundation for the fence?

Before calculating the structure, it is necessary to determine the depth of penetration into the ground and its area. The first parameter is easy to determine. To build a lightweight foundation for a fence made of corrugated board, a fixed value is taken - 50 cm.

Manufacturing heavy - brick - bases requires taking into account the characteristics of the soil mass and the size of the object as a whole. If it is not possible to find out these parameters, then we calculate the depth of soil freezing and add another 40 cm to the value. The freezing layer for each region is determined separately.

First you need to calculate the area of ​​the sole. For this, there is a formula S> F / K * K (N) * R, in which:

• F is the total ground pressure, that is, the payload of the fence;
• K is the coefficient of conditional work; for clay soils and rigid structures, it ranges from 1 unit, for non-rigid - 1.4;
• K (N) is a reliability parameter (equal to 1.2);
• R is an indicator of soil resistance.

To calculate the materials for the foundation, we take its cross-section 0.5 × 0.7, the length is 100 m. It turns out that its total volume is 35 m 3. One cubic meter of concrete requires 340 kg of M200 grade cement, 1.05 m 3 of quarry sand and 0.86 m 3 of crushed stone, then the volume of the conditional foundation will need 11900 kg of cement, 36.75 m 3 of sand and 30.1 m 3 of crushed stone. To calculate the material for reinforcement, it is necessary to take into account its diameter.

Foundation pouring technology

The foundation for a fence made of corrugated board and brick is made using the same technology, including the following steps:

1. A concrete grade is selected (usually M200).
2. A trench is being developed for the entire length of the fence along its perimeter. Its width should be 20 cm more than the concrete formwork tape.
3. The pillow is covered with a ten-centimeter layer of sand and carefully rammed. To facilitate this step, it is worth dampening the surface of the sand with water. A layer of gravel is lined on top of the material, not less than 10 cm, and is also compacted.
4. If we are talking about a columnar fence, then it is necessary to drill holes with a diameter of 20 cm around the entire perimeter of the trench. The step between them is 250-300 cm. The depth of the holes is calculated as follows: the depth of the trench plus forty centimeters. Their bottom is covered with sand.
5. Formwork is being made. If it is a plank, then a 25 mm board is taken. From the surface of the ground, the formwork should look 30-50 cm. It is fixed with wooden blocks and soil.
6. Reinforcement is being made. 4 rods with a diameter of 8-10 cm are taken for a fence made of corrugated board and 12-14 - for a brick one, and connected into a frame.
7. If you plan to insert the pillars into the foundation, then around them it is worth tying reinforcing belts and connecting them to the reinforcement of the base.
8. When the reinforcement is ready, concrete is poured. It can take from seven days to a month to fully harden. At this time, it is necessary to moisten it with water.

Stages of mounting a strip base under a fence (video)

Shallow strip foundation for a fence

For quick construction of the structure, it can be used under a fence made of corrugated board. It is effective on non-rocky soils when there is no danger of the pillars bulging out of the ground. It takes less materials, so this type of foundation is popular in private construction.

To equip a fence made of profiled sheet with a height of 1.8 to 2 m, it is necessary to prepare a trench up to 40 cm deep and fill it with a mixture of crushed stone and sand. For a shallow foundation, it is permissible to use reinforcing rods with a diameter of 10-12 mm.

They must be laid at a distance of 5 cm from the walls of the trench. The fewer connections between them, the stronger the shallow foundation structure.

To make pillars around the perimeter of a shallow fence, at the stage of laying the foundation, one and a half meter holes are made in the soil mass using a gas chisel. After pouring the pit with concrete mixture, it is necessary to wait up to two weeks and only then proceed with the dismantling of the formwork.

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Strip foundation for a fence made of corrugated board
Today, land owners often choose the most popular and inexpensive fence . Fences made of profiled sheet can be made both on a columnar and on a strip foundation. Despite the shallow depth of occurrence, for fences can provide strength and durability of the structure for a long time. Such a foundation is a monolithic reinforced concrete tape, the lower part of which is in the ground. It is made of high-quality Portland cement and reinforced with metal fittings along the entire length, thus ensuring the solidity of the structure. Strip foundations for fences do not have a large deepening, as they carry lightweight structures, therefore they are called shallow. For fences made of corrugated board, wood or welded structures, it is enough to deepen the foundation strip by 30-50 cm, so the trench is dug no deeper than 50-70 cm, taking into account the sand cushion.

The sequence of work when installing a strip foundation for fences and barriers
The first step is to carry out the correct marking of the site in accordance with the plan or project. The next step will be digging a trench around the perimeter of the future fence with a depth of up to 70 cm.The width of such a trench or foundation pit for light structures should not exceed 25-40 cm.The total depth of laying the foundation depends on the type of soil and the depth of its freezing in the area, as well as the presence and the proximity of groundwater to the surface. In predetermined places - where the pillars will be arranged - holes or pits are made with the help of a hand drill or a mechanical pit drill - another 50-70 cm.Using a waterproofing material - roofing felt or roofing felt - sleeves of the corresponding diameter are installed in the pits for the posts. Metallic They are installed in the center of the sleeve and driven into the ground to a depth of 20 cm. The verticality is controlled by the building level, and the position of the upper part is controlled hydraulically. A reinforcing belt is arranged around each pillar in order to further connect it with the foundation reinforcement. When reinforcing the strip foundation, the main emphasis is on the corners and pillars. The fewer mates in the reinforcement, the stronger the foundation will be. The bottom of the trench is covered with a layer of sand - a pillow is formed, which is then spilled with water and compacted. The thickness of the rammed cushion is at least 10 cm. Formwork is installed - special removable or from ordinary edged boards. The height of the formwork depends on the desired height of the plinth, its strength should provide the mass of concrete with its further shrinkage. A concrete solution with fine crushed stone is poured into the finished formwork. The strip foundation is poured manually (concrete mixer) or mechanically (mixer) with careful compaction of the solution - bayonet or vibration. Concrete gains 70% strength for at least 7 days, after which the formwork can be removed.

The strip foundation is ready, it remains to fix the sheets of corrugated board on (lintels, veins) installed horizontally between the posts by welding. In the places designated for this, and wickets.

The final stage in the construction of fences is the laying of utilities - electrical wiring, security systems, installation of lighting lanterns on poles, and so on. Modern profiled sheets are initially colored, so there is no need to paint them.

Thus, a brief sequence of work on the construction of any strip foundation for a fence is reduced to several basic operations:

Trench marking and arrangement - soil sampling;
Drilling holes for fence posts;
Installation of pillars;
Backfilling of sand into the trench for sand cushion construction;
Formwork device;
Laying and knitting of reinforcement;
Preparation of concrete mortar;
Pouring the foundation;
Removing the formwork;
Installation of lags (jumpers);
Installation of sheets of corrugated board on poles.

ZABORIVOROTA company performs professional in Moscow and the Moscow region. On the company's website, you can make an independent calculation of the cost of the fence, for this you need to use

As a rule, the construction of a capital fence on the site is carried out either before the start of building a house, or after its construction, that is, at the moment when all information about the state of the soil is known. Such soil data is necessary in order to correctly calculate the strip foundation for the fence.

We all know that tape-type foundations are quite often arranged under the walls of a residential building, but the loads perceived by such a foundation are much higher than that of a tape under the fence.

Features of strip foundations

Since the loads from the fence structure are much less, then the requirements for such foundations are low. Nevertheless, a fence installed on a concrete tape will be much more reliable and durable.

As a rule, strip foundations are provided for the following types of fences:

- a fence with brick pillars;
- forged metal fence;
- a fence made of timber or corrugated board with load-bearing metal racks.

As a rule, a strip foundation for a fence is a solid reinforced concrete strip of shallow depth. For the device of such a tape, concrete of grade M 200, class B 15 is used. It is not recommended to lower the grade of concrete.

The casting of the strip foundation for the fence is carried out on a sand cushion. A bar with a diameter of 8-10 mm is used as reinforcement. If you use not ordinary formwork, but laminated one, then the concrete surface of the foundation, towering above the ground, turns out to be smooth and even. It can be easily painted in the desired color, which will add decorative and originality to the fence.

The depth of the strip foundation for the fence (as well as the width) is selected depending on the design of the fence itself. The higher the weight of the fence, the wider the tape needs to be.

So, for metal welded fences with significant weight, it is necessary to make the widest possible tape, and the depth of the bookmark may be small. But for fences made of corrugated board, you can make the narrowest tape, but the depth of its laying should be significant. This is due to the high windage of the fence.

Construction of fences on strip foundations

The process of arranging tape-type foundations for a fence consists of the following technological stages.

We dig a trench 30-80 cm wide, the depth of the trench depends on:

• climatic conditions of the construction region,
• soil stability,
• weight and structure of the fence.

As a rule, the depth of laying the foundation ranges from 60-80 cm.

A gravel-sand cushion is laid at the bottom of the trench, followed by its ramming. The pillow is abundantly wetted with water.

Then the reinforcement is welded. Longitudinal reinforcement rods are laid at the bottom of the trench on supports 5-7 cm high from scrap materials. The extreme rods of the reinforcement should recede from the walls of the trench by 7-10 cm.

Transverse reinforcement and vertical posts fit in 400 mm increments.

The upper row of longitudinal reinforcement is attached to the posts so that it is 5-7 cm below the upper level of the trench. Then, the transverse reinforcement of the upper row is laid.

The manufacture of a strip foundation for a fence is unthinkable without a formwork device. It is at this stage that we begin to build it. For this purpose, we use a 25 mm thick edged board. We prepare the boards in such a way that the foundation tape protrudes 300 mm above the ground level. We make a box from the shields and fix it in the trench by installing spacer bars and adding soil.

The concrete tape can now be poured. If the structure of the fence provides for supporting posts, then they must be installed in the trench and leveled to the level even before pouring concrete.

Moreover, concreting can be performed in two ways:

• continuous laying of concrete mixture, without waiting for the moments of setting of the previous layer;
• laying concrete with breaks for setting the previously laid layer.

For shallow trenches, the first method is suitable. To increase the durability of volumetric foundations, it is better to use the second method.

After the concrete tape has completely solidified, the formwork can be removed and the soil can be backfilled. The foundation is ready!

If you want to study in more detail the device of the strip foundation under the fence, a video on this topic can be found on the Internet.

Separately, I would like to mention the situation when a shallow foundation tape is performed when constructing a fence with support posts. In this case, the concreting of the pillars in the tape will not be enough for their stability, therefore, additional drilling of a well about 90 cm deep under each pillar may be required. After installing and concreting the pillars in the pits, you can perform the usual shallow strip foundation according to the method described above.

At the moment, corrugated fences are very popular. They will protect your home from constant winds and prying eyes, they are durable and do not require special maintenance, they are also excellent protection against dust and dirt that flies from the roads into the yard. Thanks to a double layer of noise insulation, a fence made of corrugated board with a strip foundation allows you to make the sound from the street much quieter. In addition, in a fence made of corrugated board on a strip foundation, the price can please even the most economical contemporaries.

Now let's look at what a strip foundation is.

A fence made of a profile flooring is a rather heavy structure, it is special due to the fact that the fence has a strong windage, which creates powerful resistance to the wind, and the dust that flies from the street will no longer get to you. This design must be based on a strong foundation, which is a solid strip of reinforced concrete. He will warn and protect the future fence from distortions, taking on the weight of the material, and distributes it evenly over the structure.

Varieties of foundations for corrugated fences. ...

The foundation can be:

1) monolithic;

2) prefabricated.

A monolithic foundation usually consists of broken stone, reinforcement, gravel, small boulders, giving it good strength and reliability. This foundation is one of the most durable, reliable and strong, and can stand for more than a century.

The precast foundation is installed using factory concrete blocks, which are installed using a crane. The service life is approximately 65 years. The device is performed by stage-by-stage laying out of blocks in an already prepared trench.

How is a fence made of corrugated board with a strip foundation installed?

The device of a fence made of corrugated board with a strip foundation takes place in several steps.

Stage one. We determine the following characteristics of the soil: the presence of near groundwater, how quickly the soil grows when the soil freezes, its texture and structure. Next, we carefully mark the future fence. The angles should be equal to 90 degrees, which is checked with a special device - theodolite.

Stage two. It is necessary to dig a trench for the foundation. The pillars are installed at a distance of 2.5 m, and the space for the gates and wickets is taken into account.

Stage three. In order for the racks in the ground not to deteriorate ahead of time, they need to be wrapped on the sides with roofing material. To do this, recesses are pulled out with a drill to give the roofing material the shape of a cylinder.

Stage four. In the wells made, we drive the pillars into the soil at a distance of 20 cm. It is imperative to ensure that the racks are installed at an angle of 90 degrees.

Stage five. At the ends of the racks we make a "belt" of reinforcement.

Stage six. The material from which the base was made is placed in the trenches. We check the correct position of the racks.

Stage seven. We lay the reinforcement. We take a few rods and tie or weld with wire.

Stage eight. A special removable metal formwork is installed. It must withstand the load.

Stage nine. Pour mortar into the formwork. After it has solidified, we remove the formwork, and fill in the sand in the gap between the foundation and the ground.

Why is it worth ordering a fence made of corrugated board with a strip foundation from us?

We are ready to offer you the most favorable prices and impeccable quality. You can calculate the cost of a fence made of corrugated board with a strip foundation calculator on our website.