How to knit reinforcement with a screwdriver

How to crochet reinforcement and other methods?

When performing work on pouring concrete foundations, builders are faced with the need to prepare a metal frame to ensure the strength of the structure. You can form a mesh from reinforcing bars in various ways:

• tying frame elements using wire with a hook, a screwdriver or a knitting gun;
• welding reinforcement together;
• securing the rods together using plastic clamps.

There is no single correct option. In practice, all methods are used, and the choice depends on the material used and the conditions at the construction site.

To understand in which case it is better to use one or another method, you should consider the positive and negative features of each.

Crochet

Crocheting reinforcement (you can read about how to do it here) has the following advantages:

• high speed of operation. With some skill, the specialist quickly tightens the knots with a hand tool at the junction of the rods. Such work is not difficult even for beginners;
• ease of repairing defects. Incorrectly applied wire can be easily untwisted or torn with wire cutters. The welding seam cannot be redone so easily - you will have to saw the joint with an angle grinder;
• You don’t need to have much experience to tie reinforcement. A novice builder quickly learns this simple procedure and after fifty knots can be considered a professional;
• You can tie the rods into a frame immediately inside the formwork;
• Labor and material costs are not high.

The disadvantages of crocheting reinforcement include the unsteadiness of the assembled frame. This problem arises when it is necessary to transfer the frame from the assembly site to the formwork. Dealing with this shortcoming is simple:

• in the case of conventional metal reinforcement, it is recommended to strengthen the connections by welding in several places;
• when using fiberglass products, install several braces around the perimeter. They will help give additional strength to the mesh.

In practice, this problem is solved simply - they knit the frame directly in the formwork so that it does not have to be moved.

In addition to a manual hook for tying reinforcement, a semi-automatic hook is also used. This device helps you get the job done much faster. A semi-automatic machine is a mechanism equipped with a reversible screw base. If the handle is pulled back, the screw begins to rotate, pulling the wire onto the joint.

You can see how to use a semi-automatic crochet hook for tying reinforcement cages in the video below. You have to get used to using such a tool, but professional workers manage to tighten the knot on the connection in one movement, which noticeably speeds up the whole process.

Welding

The technology of welding reinforcement is used in the construction of monolithic foundations for multi-story buildings. Previously, this method was considered the most reliable, but in modern conditions other methods of connecting rods are more often used.

The disadvantages of the welded method include:

• the need to involve a professional welder in the work. Paying a specialist automatically increases the estimated cost of the facility;
• the point of connection of two reinforcing bars weakens the overall strength of the structure and is a weak point;
• It is impossible to connect fiberglass reinforcement by welding;
• the most popular brand of rods for frame assembly (A-400) is not suitable for this method. You will have to order A500C brand rods separately.

Source: https://DomZastroika.ru/foundation/kak-vyazat-armaturu-dlya-fundamenta-kryuchkom.html

How to knit reinforcement with a screwdriver video

The combination of concrete with reinforcement provides any reinforced concrete structure with strength and durability. In order for the finished metal frame to last a long time and withstand serious loads, you need to know how to knit reinforcement.

Using special knitting wire

To quickly and reliably make the strapping, a special baked steel wire of round section with a diameter of 0.8 to 1.2 mm is used to fasten the reinforcing elements. It bends easily, fits tightly to the joint, and stretches well (that is, it does not tear when knitting).

When working with such material, the knitter does not require any special skills. This method is successfully used both for tying the reinforcement of a reinforced concrete monolithic slab and for the reinforcing frame of any foundation.

How to quickly knit reinforcement, what materials, tools and equipment will be required for this.

Application of hooks

To work with wire, you can use: a manual crochet hook (it can be easily purchased at any hardware store), a homemade hook for tying reinforcement, a semi-automatic mechanical hook (more expensive than a regular manual one) or a crochet hook made using a screwdriver.

How to make a hook for tying reinforcement:

We take a thick electrode or a metal rod of a suitable diameter, sharpen one end of it and bend it at the desired angle. We bend the handle from the second end of the rod (if desired, you can wrap it with electrical tape). The hook for tying reinforcement with your own hands is ready.

The material for production is a metal rod, both ends of which are sharpened. On one end of the rod we place a round wooden blank for the handle (with a drilled hole in diameter slightly smaller than the diameter of the rod); We bend the second end of the rod to the required (convenient) angle.

An old screwdriver (or a construction awl) is suitable as a starting material, the metal end of which is sharpened. Then we bend it to the required angle and get a hook for knitting reinforcement with a comfortable handle.

On a note! The photo will help you easily make hooks for tying reinforcement.

Tying reinforcement with a screwdriver significantly speeds up and facilitates the work. We clamp a hook for wire tying reinforcement, made from a thick nail, into the chuck. By adjusting the rotational force of the screwdriver, you can easily achieve the required joint density. How to knit the reinforcement cage: with homemade tools or purchased ones (or both) - decide for yourself.

How to crochet

The methods of tying reinforcement are quite simple and understandable. Scheme of step-by-step knitting of reinforcement:

1. We cut the wire into pieces (we select the size experimentally depending on the diameter of the rods).
2. Fold the prepared piece in half.
3. We bend the double workpiece around the intersection of the reinforcing bars.
4. Insert the hook into the loop and place the loose ends on it.
5. Rotate the hook (usually 3-4 rotational movements are enough) until a tight twist is obtained.

Attention! You can tie the reinforcement using the above technology using any type of hook.

There is another way to crochet reinforcement - overlapping.

1. We cut a piece of wire twice as long as in the first case.
2. Fold the piece in half and in half again.
3. We place the double bend on the top bar.
4. We place two double pieces under the lower bar and lift it up.
5. We insert the hook into the loop and press the two free ends to it.
6. Rotate the hook and crimp the joint. If we use a mechanical hook, then with force we pull the handle towards ourselves. We obtain a tight twist due to the fact that the translational motion is converted into a rotational motion by means of a worm gear.

Using a knitting gun

A gun for tying reinforcement greatly simplifies the work of creating any reinforcing frame.

Convenience and advantages of use:

• a cassette with knitting wire is inserted inside the device;
• it is supplied automatically;
• the knitting gun is powered by a built-in battery;
• correct knitting of reinforcement with minimal use of manual labor;
• An automatic gun for tying reinforcement allows you to make all twists with the same tension.

But such a convenient and useful device has disadvantages:

• impossibility of carrying out work in hard-to-reach places;
• a gun for tying reinforcement is expensive, so its use is economically justified only when carrying out large volumes of work.

Table with approximate prices for the main models available for sale on the construction market:

Reinforcement model Ø (mm) Unit production time (sec) Number of units from one battery charge Estimated price (RUB)

GS308-6512	6,5÷12	0,8	1000	19000÷21000
GS308-1016	10÷16	0,8	1000	22000÷24000
GS24T	6÷24	0,8	1000	26000÷28000
GS34T	8÷34	0,8	1000	28000÷30000
RT308V	4÷19	0,8	1100	31000÷35000
BM400	10÷29	1,0	2000	44000÷46000
BM200	9÷21	0,85	2000	28000÷30000
KW-0039	10÷22	0,8	1200	47000÷54000
RDL40	12÷32	0,9	3000	43000÷45000
RDL20	9÷21	0,9	3000	41000÷43000
PVA-32	6÷18	1,6	450	44000÷45000

Pliers and pliers

For tying, ordinary pliers, pliers (with slightly blunt cutting edges) and special pliers for tying reinforcement (manual or automatic) are often used.

Knitting reinforcement with pliers and pliers according to production technology is no different from fastening reinforcing bars using hooks. The only difference is that there is no need to form a wire loop.

Strapping using electric welding

1. A fairly reliable way to tie reinforcing bars.
2. High speed of work completion.
3. Less labor-intensive process than hand knitting.

1. Under the influence of high temperature during welding, the physicochemical properties of steel change (the crystalline structure of iron is disrupted). At the joints, the bending and tensile strength of the reinforcing bar is significantly reduced.

   Ultimately, this leads to a decrease in the reliability of the entire reinforcing frame.

2. The use of welding significantly increases the rigidity of the frame made of reinforcing bars. When compacting the solution with vibrators, there is a risk of deformation or destruction of rigid welded joints.
3. The frame metal in the area of ​​welding seams is more susceptible to corrosion, which reduces the durability of the entire reinforced concrete structure.

4. To carry out welding work, special equipment is required.
5. The site where such work is carried out must be connected to the power supply, which is not always possible (especially during suburban construction).
6. Work can only be carried out by a qualified specialist (welder). How firmly and reliably the frame made from steel reinforcement is knitted depends on his experience and qualifications.

Tying with metal staples

The reinforcement can be tied using special metal staples.

• high speed of connection execution;
• no tool is required for tying reinforcement (everything is done by hand);
• the work can be done even by an untrained person;
• equal density of connected compounds.

• the need to purchase a set of special staples for the production of tying reinforcement of a certain diameter;
• limited area of ​​application: only for fastening simple cross connections;
• insufficient fastening strength (mainly suitable for light horizontal structures, for example for reinforcing screeds).

Tying with plastic clamps

Knitting reinforcement using plastic clamps is a simple and convenient method for creating a reinforcement frame.

• plastic is not subject to corrosion;
• ease of installation;
• high knitting speed;
• low cost;
• there is no need to use special tools.

• work cannot be carried out at subzero temperatures (plastic becomes brittle);
• the strength of the connections is questioned by many professionals;
• a fairly large elongation coefficient of plastic can lead to a decrease in the rigidity of the reinforcing frame (or a violation of the geometry).

Some recommendations for knitting the reinforcement cage of the foundation

The rules on how to knit reinforcement for a strip foundation and for a monolithic slab are the same. The length of a standard reinforcing bar is 6 meters. Very often they have to be joined. The overlap of the reinforcement during tying should be 40÷50 cm, the rods should be tied together evenly in 3-4 places.

The same requirements apply when strengthening corners and junctions with L-shaped and U-shaped additional reinforcing elements.

Knitting a metal frame from reinforcement for a strip foundation can be done not only in the formwork, but also in separate fragments (made in a place convenient for you), which are then lowered into a box.

Source: https://crast.ru/instrumenty/kak-vjazat-armaturu-shurupovertom-video

How to knit reinforcement with your own hands: devices and methods

Tying reinforcement for the foundation is an important stage in the construction of a building. How long the structure will stand depends on the quality and strength of the frame. Therefore, you need to pay maximum attention to this process, as well as purchase high-quality components.

Mating is a lengthy task, although not very difficult. Especially a lot of time will be spent on the reinforcing belt of the slab foundation. There, the number of intersection points is in the hundreds or even thousands. And each such intersection requires fixation, which means it needs to be knitted. And often twice.

There will be more work with a slab foundation

Things will go faster when installing a strip or pile foundation. In this case, when building a bathhouse, you can get by with several hundred tying points, although it all depends on the size of the building and its layout.

You can, of course, hire a crew, but they will ask for a considerable amount. Knitting the foundation yourself will save you a lot of money.

Now about where to knit. There are two options - immediately on site on the foundation. In the case of a slab foundation, this is probably the only possible way: the volumes are too large. For a strip or pile frame, you can tie a frame on a site, table, special stand, etc., and then install it in a trench or pile.

Wire for knitting

To connect rods in low-rise construction, annealed low-carbon steel wire is used. It is also called “knitting” wire. Its quality and parameters are regulated: all characteristics must comply with GOST 3282-74.

For low-rise construction, wire with a diameter of 1.0 -1.4 mm is needed. Experts believe that the best option is 1.2 mm or 1.4 mm. The millimeter one is too weak and often breaks; the larger diameter one is difficult to rotate.

Regular annealed wire is dark in color. There is also a light one - it is galvanized. The protective coating greatly increases corrosion resistance without affecting flexibility and elasticity. It costs more, but the reliability of the binding, together with the quality of the reinforcement and concrete, determines the reliability of the entire foundation. So this is a case where you need to take the best.

Wire for tying reinforcement can be sold in coils or already cut

Unannealed wire is produced. It costs less, but its ductility and strength are lower, and it breaks more often. So it’s better to take one that has undergone heat treatment.

One connection requires from 25 to 50 cm of wire. Having cut a piece of a given length, it is folded in half and used in this form. The larger the diameter of the rod, the longer the piece of wire needed for knitting. For reinforcement 10 mm is 25 cm, for 12 mm 30 cm is enough, for 14 mm 35-40 mm is required.

Longer sections are needed in those places where three rods have to be connected. And there are many such places. Here you will need 50 cm sections.

They sell wire in coils, or already cut into pieces of a certain length. Sliced ​​packages can be of different weights - from 0.5 kg to 10 kg and more.

Devices for tying reinforcement

How easy and fast the knitting will be depends on the tool you use. You can twist the reinforcement by hand, but it is difficult and time-consuming. There are various devices for this. Simple and more complex.

Hooks

The most widely used are various hooks. There are quite a few of them in stores; they are made independently from any piece of wire of a suitable diameter.

Hooks for tying reinforcement have different lengths, handles and shapes

There are simple ones, with straight or curved steel handles. They differ in the angle of bend of the handle, the shape of the hook, and its size. How to decide which is more convenient? Just try to work. No other way.

There are mechanical hooks - they have a spiral built into the handle. There is no need to rotate them when knitting. Just pull up. The handle slides along the screw groove, turning the hook. Watch the video to see how it works.

Ticks

There is a special tool in which pliers and a mechanical hook are connected. Thicker single wire can be used for knitting with them. It is placed under the intersection of the reinforcement bars and inserted into the pliers. They are clamped in the clamp, the excess wire is bitten off. The next step is to pull the handle a few times. The pliers begin to rotate, tightening the knot. Such a device costs $40-60. How much you need it - decide for yourself.

Mechanical handle pliers

There are other ticks. Also special for knitting, but they are rotated by hand. You don’t need a lot of turns here - the pliers allow you to grab the wire close to the reinforcement and only make one or two turns.

They differ from ordinary ones in the shape of the cutting part - they must hold the wire. Professional knitters on construction sites work using just such a tool. They say that with pliers, tying goes twice as fast as with a hook and a gun. There are two more advantages:

• No need to cut the wire. It is wound into small skeins, which are held in the left hand.
• There is no overspending: “tails” of a few millimeters remain. This is important for large volumes. Special pliers are used when knitting the reinforcing belt. They have a different shape of sponges: they hold the wire

Believe it or not - it's up to you. But it looks amazing.

Gun

Devices for automating knitting are available for sale. These are the so-called knitting guns. They are “charged” by wire and run on batteries. All human involvement consists of bringing the gun to the joint and pressing the trigger guard. A second or two, and the gun will wind several turns around the intersection of the bars and make a knot.

Buying such a gun to tie one foundation is an unjustified waste of money. They are rarely purchased even by those who do this professionally. Their cost is considerable: no less than $500.

How to knit reinforcement for a foundation

Procedure for crocheting reinforcement

Since a hook is most often used when tying reinforcement, we will tell you how to use it. Cut pieces of knitting wire of the required length are folded in half and slightly bent (about a third of the length is bent). Push the bent side under the joint (diagonally).

A hook is inserted into the resulting loop; the free ends, which are on the other side, are also placed on the hook and bent. Now they begin to rotate, twisting the turns and tightening the connection (clockwise or counterclockwise - depend on the situation, do what is more convenient).

When the knot approaches the reinforcement, the hook is simply removed.

Here you need to decide how tightly to tighten the knot. You can’t overtighten—the wire will burst, and you can’t allow the reinforcement to dangle. It should fit snugly. The knot should not be on the side, but clearly above the intersection. Therefore, hold the hook above the cross.

There is a little trick that will allow you to pull the rods well together and secure them. Approximately before the last two or three turns, the hook must be pulled towards you with force, stretching the wire. And with tension make the last turns. Due to its elasticity, the wire stretches a little, the knot becomes tighter, and the reinforcement is well tightened.

Another note - the length of the twist should not be long. You can get 3-5 turns. This will be enough to make the connection strong.

There is another way to knit reinforcement. They differ only in the way they fix the free end on the hook: put the wire a little behind the hook and start twisting. The one described first seems to be the most convenient. In the sense that one hand remains free, it can be used to hold the reinforcement.

The knot should be exactly above the junction of the reinforcement bars

After you have removed the loop, bend all the ends under the connection - this way they will not interfere, and you will not get hurt or tear your clothes during further work.

Tying reinforcement with a screwdriver

There is no process that our people will not try to modernize in their own way. So knitting reinforcement is much faster using a conventional screwdriver. The hook is pre-made, fixed in the holder, and the lowest rotation speed is set.

The procedure is the same as when using a regular hook. Only after you have secured the free ends of the wire to the hook, turn on the screwdriver for a couple of moments. After tightening the loop, turn off the tool and remove it from the hook. With practice, you can do one knitting per second.

Knitting with plastic clamps

You can tie the reinforcement with mounting plastic clamps. They are also inserted under the connection diagonally, the end is threaded into the latch and tightened. Everything happens quickly.

But how durable the connection using plastic clamps will be is a question. Most likely, nothing will harm the plastic in the screed: it is chemically neutral. But, it has a decent elongation factor. That is, under prolonged static load it will stretch. The rods will begin to “walk”, which can lead to destruction of the screed. Combined with the fact that the clamps are more expensive (albeit not much), this option does not look so attractive.

How to make a hook for tying reinforcement with your own hands

You don't have to buy a hook. You can easily make it yourself, and you can choose all the sizes “to suit you”, make it as convenient for you.

Thick steel wire with a diameter of 4 mm or more is suitable. For example, an electrode can be used.

Bend a circle at one end of it. The handle will rest against it. Just make a circle. If you just bend it, it will be inconvenient: you will constantly cling to your sleeves. So try and bend it well so that the edge rests on the rod.

Bend the rod itself approximately in the middle at an angle of 30 degrees. You should get something similar to a rocker arm. String two or three washers onto the rod, pull them to the ring - they will fix the handle.

Options for homemade hooks for frames

You make the handle itself. There are several options:

1. Two tubes are needed. One is slightly larger in diameter than your rod (4 mm requires an internal diameter of 5-6 mm). The second one is even bigger. Their length is a third of the entire hook or a little more. You insert one into the other and rivet their ends with a hammer.
2. Weld washers on both sides of the tube, the inner diameter of which is slightly larger than the diameter of the rod.
3. Turn a handle from wood on a lathe. But you need to take dense wood - pine or spruce will not work - they will wear out quickly.
4. Use a piece of polymer pipe. The stopper at the bottom is a welded washer or nut.
5. Your option.

Place the finished handle on the rod and weld a lock washer to prevent the handle from rolling down.

Now we make the hook itself. Use a grinder to sharpen the end of the rod into a cone. There is no need to make it sharp, just slightly rounded. Then use pliers to bend it into a crochet hook. That's it, your instrument is ready. You can start working.

You will need to experiment with the angle and length of the hook itself - choose the one that is convenient for you. Some people find it convenient to use a short, steeply curved hook, while others find it better to work with one bent at a slight angle, but of great length. In general, try it. The main condition is that he should not break the wire. Then the connection will be reliable.

Results

There are many ways to tie reinforcement to a foundation with your own hands. The matter is long, but not the most difficult. Choose the method that is more convenient for you, as there will be a lot of work.

Source: https://baniwood.ru/kak-vyazat-armaturu-svoimi-rukami.html

Making the right hook for tying reinforcement with your own hands: Tips +

In recent years, technologies associated with the use of monolithic structures have become increasingly popular in the construction of private and apartment buildings and commercial buildings.

To give them strength and resistance to stress, before pouring concrete, a special metal base is formed inside. The reinforcing bars are tied together with steel binding wire using a special hook.

Such a tool is sold in any hardware store, or you can make a hook for tying reinforcement with your own hands.

Why knit if you have a welding machine?

The use of welding when assembling large-volume frames is not welcomed by specialists in the field of monolithic construction. As a rule, such an effect on reinforcement bars accelerates the corrosion process and also deteriorates the quality of the iron. In addition, welding significantly increases the time and cost of reinforcement.

Types of crochet hooks

The binding process involves the use of thin steel wire, cut into pieces, to securely fix the intersections of the reinforcing strips. Today, manufacturers offer three types of ready-made crochet hooks for making armored belts: manual, screw and mechanical.

Hand hook

The simplest hook consists of a handle to which is attached a metal rod with a bend at the end. It easily grips the binding wire. The hook rod rotates around its axis, thus creating nodes that fasten the reinforcement frame.

A simple crochet hook is suitable for both beginners and experienced builders when working on small projects. Its advantage is that working with it allows you to quickly understand the tying algorithm and understand the required level of tension in the twists. The process can be viewed on the Internet. Additionally, the hand hook is affordable and quite durable when used properly.

Semi-automatic hook

This tool also consists of a handle and a rod. Unlike the manual one, the screw one is equipped with a drill-shaped hook. With forward movements of the handle, it is screwed into it, simultaneously tightening the wire into the knot. To make a high-quality twist, the master will need two or three movements. This allows you to complete reinforcement work with a semi-automatic hook in a shorter time.

Mechanical

Professional builders working on large projects use automatic hooks to tie together reinforcement.

They are also called hook gun. This is a fully automatic tool. Thanks to the use of such a high-quality tool, the reinforcement is knitted as quickly as possible and eliminates the large energy consumption of the craftsman.

Buy or make a hook?

There is no point in purchasing an automatic hook for home use. It is expensive and designed for large volumes of wire.

DIY crochet hook

Often, factory-made crochet hooks do not fully satisfy the needs of builders performing reinforcement. This is because their rods may have an incorrect bend.

It happens that the length of the working surface is too short and does not allow making a knot in a hard-to-reach place. In such cases, a homemade crochet hook is twisted.

We make the right construction hook with our own hands. Materials

To make hooks, specialists use electrodes for welding machines, or less often, a piece of steel wire at least 4 mm thick.

There is no need to create drawings; you only need the following materials:

• - trowel handle, piece of hose or roller handle
• - electrode or 4 mm wire
• - sharpener

Process

1. We make a handle from the hose for the future hook, or use the handle from a trowel/roller.
2. We insert the rod (electrode or wire) into the hole in the handle or into a piece of hose and fix it with epoxy resin.
3. After the epoxy has dried, bend the rod 90 degrees at a distance of 5 cm from the handle.

   The correct bend resembles a rocker arm.

4. We bend the end of the rod in an arcuate manner.
5. We sharpen the sharp part of the electrode with a sharpener or a file.

HELPFUL HINT: If instead of a handle you attach the end of a homemade hook to a screwdriver, then you will get a semi-automatic hook made by yourself

Crochet reinforcement. Technology

The process of knitting reinforcement for constructing a foundation, flight of stairs or screed differs only in the type of crochet hook. The technology of knot twisting itself does not change. It is usually recommended to immediately cut the steel wire into pieces of 30-40 cm. Experienced craftsmen first make several test knots to clearly see how long a piece of wire is required. This way the wire consumption will be minimal.

HELPFUL ADVICE: If you come across heavy bending wire, you can warm it up over a fire for 30 minutes, let it cool, and then get to work.

Stages of tying reinforcement

• — cutting steel wire for workpieces
• - folding the workpiece in half and turning it around the intersection of the rods
• - gripping the ends of the wire with a hook through the loop of the workpiece
• — 2-3 rotational movements to obtain a knot
• - neat crochet twist tightening
• — checking the assembly (we move the reinforcement bars - they should fit tightly to each other)

The whole process is very simple. But before you try, it’s better to study photos of the creation of reinforcing structures.

Source: https://domsdelat.ru/instrumenty/delaem-pravilnyj-kryuchok-dlya-vyazki-armatury-svoimi-rukami-sovety-video.html

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How to knit reinforcement for the foundation. How to make a reinforcement cage. Flat and spatial types of frames

Building a foundation is a process accessible even to those who have never held a tool in their hands; you just need to know the clear rules on how to carry it out. Perhaps one of the most important places in the construction of the foundation for any structure is the reinforcement of the foundation with metal rods.

If you don’t know how to install them correctly, our article will help answer the question.

Metal reinforcement for the foundation is very important; without it, the structure will not have the required strength margin

Basics

Reliability of any reinforced concrete monolithic structure #8212; foundation, walls, floors and the like, provide several of the most important components:

• Accuracy in the calculation of the reinforcement frame and the entire foundation.
• Choosing the right concrete.
• The quality of the reinforcement and the consistent frame assembly process.

It is difficult to overestimate the importance of these components. Let's focus on reinforcement cages, or rather #8212; during their assembly process.

There are two ways to directly assemble all structural elements together:

• Welding joints of reinforcing bars.
• Tying reinforcing steel into a frame.

The second method is more preferable, since when welded, the reinforcement frame loses its strength. This occurs due to the fact that the steel rods at the welding site become thinner, and rust and subsequent destruction may occur at the joints.

Note! In addition, welding requires a special tool, which, if you buy it, will cost you money.

Reinforcement cage

Since we cannot influence the quality of the reinforcing steel, we will discuss an issue that is within our capabilities - assembling a reinforced frame with our own hands (see also the article Fiberglass reinforcement for the foundation #8212; a new word in traditional construction).

The foundation is a structure on which, literally and figuratively, the strength and durability of all other structures of the building are entrusted. Therefore, we will pay special attention to how to correctly knit reinforcement for the foundation.

What you will need

To complete this job you will need:

• Directly reinforcing steel of the required diameter (8-10 mm is enough).
• Knitting wire, in an amount of 25-30 cm for each connection, with a diameter selected according to the diameter of the reinforcement.

Important! The wire used for tying reinforcement into the frame is exclusively steel, soft, annealed. Products of other alloys: aluminum or copper, are not suitable for our work.

• Special hook for knitting frames #8212; a device that will make your work much easier, despite the fact that its price is cheap.

In addition, we advise you to enlist the help of family members or friends. The process of knitting reinforcement itself is not difficult, but working alone will be extremely inconvenient and tiring. You will need at least one assistant, or better yet several, this will significantly speed up the process.

How to do

So, provided that everything has been purchased and there are people willing to help, we begin the process of assembling the reinforced frame.

Here are step-by-step instructions on how to properly tie the reinforcement for the foundation:

• We cut the knitting wire into pieces approximately 25-30 cm long (the size of the piece depends on the rods themselves).
• Bend this piece in half and use a tape measure to measure.
• We place it under the crosspiece of the connection diagonally.

We recommend working with rubberized gloves, this will allow you to hold the wire better in your hands.

• For the part where the loop has formed, we hook it with a knitting hook.
• We hook two opposite ends.
• Turn the hook, twisting the wire.

Turn slowly, you can even start twisting with your hands

Attention! In this twisting process, it is important not to overdo it so that the wire does not break.

Non-standard approach

You can significantly speed up and facilitate the process of connecting the parts of the reinforcement frame with a screwdriver. This is what the most economical private builders do. Without purchasing a special hook, clamp a bent nail or a piece of smooth reinforcement of small diameter into the screwdriver chuck.

With the help of such a simple invention, a reinforcing frame is quickly and technically produced.

The photo shows exactly the same option when a screwdriver is used instead of a hook

Types of frames

It matters what kind of reinforcement cage we are talking about. They are divided into:

Flat

The method called #8212; was described above. knitting reinforcement for slab foundations.

Its frame looks like a flat mesh.

Instead of making such a frame yourself, you can overpay and buy a ready-made mesh, saving time and effort

• In this case, the reinforcing steel is located only in the horizontal plane with a step between the rods, usually 25-30 cm. It all depends on the parameters of the foundation.
• Reinforcement bars are laid on the bottom of the pit, alternately longitudinal and transverse.
• For ease of binding, a brick or special plastic holders are usually placed under the mesh.

Spatial

The scheme for horizontal bases #8212 is somewhat more complicated; knitting reinforcement for a strip foundation, since in this case a spatial frame is arranged.

This means that in addition to horizontal reinforcing bars there will also be vertical ones.

• Also, depending on the height of the foundation above the ground. There can be more than two horizontal planes.
• The distance between horizontal rods should not exceed 20 cm.
• Vertical rods are knitted similarly to horizontal ones. There is no need for linings here; the practice is to simply drive vertical rods into the soil at the bottom of the trench.

To construct the reinforcement frame for the foundations of large buildings, you can resort to using a special, so-called tying gun. The use of this modern tool will speed up work by 5-6 times, but it is not cheap.

Therefore, you yourself have the right to decide what is more convenient for you #8212; reduce labor costs for construction or stick to a modest budget. These are the rules for tying reinforcement for the foundation.

An automatic tool that allows you to attach rods effortlessly

Conclusion

As we already said at the beginning of the article, building a foundation is a process accessible to everyone (read also the article Building foundations with your own hands: advice from a master). And now, knowing how to properly knit reinforcement for the foundation, you will cope with this task with a bang.

In the video presented in this article you will find additional information on this topic.

How to Knit Reinforcement with a Screwdriver

How to knit reinforcement for the foundation. How to make a reinforcement cage. Flat and spatial types of frames

Building a foundation is a process accessible even to those who have never held a tool in the palm of their hand; you just need to know the clear rules of how to carry it out. Perhaps one of the most important places in the construction of the foundation for any structure is the reinforcement of the foundation using metal rods.

If you don’t know how to install them correctly, our article will help answer the question.

Metal reinforcement for the foundation is very important; without it, the structure does not have the required safety margin

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Since we cannot imagine influencing the quality of reinforcing steel, we will discuss an issue that is within our capabilities - assembling a reinforced frame at home (see also the article Fiberglass reinforcement for the foundation - an innovation in traditional construction).

The foundation is a structure on which, in a literal and not figurative sense, the strength and durability of all other structures of the building are assigned. Therefore, we will pay special attention to how to correctly knit reinforcement for the foundation.

How to quickly and correctly crochet reinforcement with a screwdriver

Reinforced concrete structures, such as foundations, window and door lintels, floors and other elements.

Knitting reinforcement with a screwdriver when making a reinforcement cage with your own hands

Making a reinforcement frame when pouring the foundation of a house, bathhouse, or any other structure is an extremely important and responsible matter. High-quality performance of this work is the key to the strength of the future building. The technology for making reinforcement requires binding the rods to each other with metal wire.

The process of tying reinforcement itself is simple, but it is very long and monotonous, especially if you have to reinforce large areas.

Tying reinforcement with a screwdriver

In industry, a special gun is used for tying reinforcement. But it costs a lot: depending on the brand and performance - from 30 to 100 thousand rubles and more. Buying such equipment for one-time mating is not only expensive, but also, in general, pointless, since the gun will be used once or twice, and then lie without any use, cluttering the pantry and forcing the owner to longingly remember the waste that was thrown away. money.

Therefore, in everyday life, reinforcement is usually knitted manually using a specially shaped hook, most often homemade. This method of knitting is very cheap, but has one significant drawback - it is extremely long. If you have to twist hundreds, or even thousands of connections, then the work takes entire days, dramatically increasing the construction time. And, for example, a summer resident is always short of time.

The most successful way to tie reinforcement is using a regular screwdriver. Such a device costs significantly less than a tying gun, but the most important thing is that it can be used both in the construction of a house and in everyday life, fully working out the funds invested in it. This universal device is extremely useful for the home craftsman. How to use a screwdriver for tying reinforcement?

So, to create a reinforcement frame we will need the following materials and devices:

• Reinforcing rods;
• Wire;
• Screwdriver.

Wire selection

To secure the reinforcement well, you will need special wire, which is sold in hardware stores. When using a screwdriver for tying, it is best to use wire with a thickness of 1.2 to 1.4 mm. It should be made of annealed low carbon steel. If the wire bends poorly, it should be held over the fire for half an hour. After this, it will soften and bending it will become much easier.

The wire is cut into pieces 30-40 cm long. The cutting process is also quite simple, but tedious and long. If knitting large areas is required, the wire is usually rolled into a coil and then cut with a grinder.

Equipment preparation

An ordinary household screwdriver is suitable for tying reinforcement. This technology does not require a very large number of revolutions, so even an inexpensive model will do. It is only advisable to choose screwdrivers with adjustable speed. Cordless screwdrivers are preferable to corded ones, since the master is not tied to an electrical outlet.

To work, you need to make a special hook attachment. It can be made from an ordinary thick nail with a diameter of at least 4 mm or any other suitable material. The head of the nail is sawed off, and the tip is bent into the shape of a hook. A welding electrode and thick wire are also used to make a hook.

After this, the resulting device is inserted into the screwdriver chuck and screwed tightly. At this point, the manufacture of the device for tying reinforcement can be considered complete.

Tying reinforcing bars

After laying the reinforcement, its knitting actually begins. Its technology is very simple. You need to fold a piece of wire in half and insert it under the cross-shaped connecting rods of the reinforcement. The screwdriver attachment is inserted into the resulting loop, the trigger is pressed, and in a matter of seconds the bunch is ready.

After the first mating, you need to carefully examine the resulting connection. If the wire is torn or broken, reduce the speed of the screwdriver. If the wire is not wrapped tightly or is not wrapped completely, the speed should be increased. Having adjusted the speed, you can begin the final knitting.

Benefits of using a screwdriver

Compared to manually tying reinforcement, a screwdriver significantly reduces time and saves the craftsman’s effort. A job that could take a whole day is completed within a few hours or even minutes, depending on the size of the areas being worked.

Unlike professional devices for tying reinforcement, screwdrivers are inexpensive and are constantly in demand on the farm for various reasons. You can make your own crochet hook in a matter of minutes from scrap materials, without even bothering with a trip to the hardware store. Finally, this technology makes it possible to develop an algorithm of actions that allows mating to be carried out quickly, efficiently, and rationally.

Thus, this simple and accessible method of knitting will help to correctly and efficiently lay reinforcement in the foundation of your future home.

Source: https://domnuzhen.ru/ustrojstvo/vyazka-armatury-shurupovertom.html

How to knit reinforcement for a foundation

Construction symbiosis. It seems like a concept from biology. Animals and plants enter into symbiosis, that is, mutually beneficial cooperation. One, for example, can serve as a home for another, receiving useful substances or protection from viruses from the “tenant”.

What is the construction symbiosis? Let's look at the example of reinforcement and concrete. Steel rods give rigidity to the latter, saving it from destruction. Concrete saves the reinforcement from oxidation and rust, protecting it from the harmful effects of the atmosphere and moisture on the metal.

For symbiosis to work, you need to learn how to knit reinforcement correctly . Without preliminary coupling of its rods, the foundation, walls, and interfloor ceilings cannot be poured. Why? More on this and more below.

Why knit reinforcement

You can understand why to knit reinforcement by knowing the diagram for pouring reinforced concrete structures. First, the metal frame is installed. However, there are also composite reinforcement. The latter is lighter in weight and is rolled into coils.

The first is unbending and heavy. But the principle of operation of classic and modern frames is the same. A kind of network is made from rods in the center of the foundation, wall, concrete slab. The reinforcement should remain in the center.

By moving to the edges of the fill, the frame will redistribute the loads in the final structure and become vulnerable. Close to the concrete surface, water vapor can reach the reinforcement, causing corrosion of the metal. That is why the rods are tied together so that the base does not “float” under the concrete mixture being poured.

The question of how to knit reinforcement for a foundation is a popular one, since laying rods in the foundation is always required. A metal network is needed even under a private house, not to mention multi-apartment high-rises.

Under the latter, it is customary to pour monolithic foundations, that is, solid slabs. For private houses, a strip foundation is often sufficient. How to knit reinforcement for both? Same. There are several ways:

Classic reinforcement knitting

We take steel wire with a diameter of 0.8 to 1.2 millimeters. The exact diameter depends on the width of the reinforcement bars. It ranges from 6 millimeters to 8 centimeters. The degree of strength that the metal will impart to the concrete pour depends on the diameter.

Classic crochet reinforcement

However, this strength is also related to the quality, as well as the type of knitting. In addition to manual connection of reinforcement, there is the option of welding. The latter is rarely resorted to, since the docking turns out to be rigid.

The frame has no gaps for a step “right” or “left”. Such movements are necessary when there are critical loads on the foundation. Where welded joints break, knitted ones will only stretch, maintaining the integrity of the structure.

The main load in the foundation is carried by the longitudinal reinforcement bars. Transverse – their support. Connect the corners of the frame and the intersection of the rods. Usually, the fastening wire is worked with pliers. They twist the ends of the harness, securely fixing it. The shape of the fastening is a single loop.

Knitting reinforcement with a hook and a screwdriver

Crocheting reinforcement does not imply an openwork net, as some ladies might think. The hook for the foundation frame is not so much a knitting needle as it is a pair of wire cutters that remove unnecessary ends of the wire.

Tying reinforcement using a screwdriver

Before this, the fastener is picked up and twisted into a bundle. A hook also helps to secure the loop. He picks up the wire. All that remains is to make rotational movements.

They are made manually or using a screwdriver. The latter speeds up the knitting process by about 5 seconds on each loop. For the method to work, the ends of the wire are inserted into the screwdriver chuck and turned on.

A rebar gun is a battery-powered electrical device. The device speeds up and partially automates knitting. One knot with a gun takes 1.5-3 seconds, as opposed to at least 10 with other methods of connecting rods.

Knitting reinforcement with a gun

A microchip in the gun regulates the tension of the wire during tying. Convenient, because with manual connection it is rarely possible to make identical nodes. One may be tight and the other flimsy. The wire for tying in the gun is wound on a drum. The part is removable. This saves working time. A new drum immediately takes the place of the old one.

You have to pay for the convenience of working with a pistol. The device is expensive. Therefore, a reinforcing gun is used, as a rule, on large construction sites that need to be completed in a short time. In private housing construction, they prefer hooks and pliers.

A staple is a piece of wire. It is already folded into a loop. All that remains is to tighten it. As a result, the process of knitting a joint is accelerated by 3-4 times. Minimal skill is required to work with staples, and a beginner masters the process in just a couple of hours.

Tying reinforcement with staples

In addition, each bracket is of a standard size, which ensures uniformity and stability of connections. The ease of drawing up an estimate is also attractive. One staple is needed for one joint of reinforcement bars.

When purchasing wire in coils, you have to take into account the footage and split it into the approximate length of one fastener. In general, if you plan to knit reinforcement with your own hands , staples are a convenient and affordable option. The price tag for blanks is slightly higher than for regular wire. But the time saved on mating covers the costs.

Clamps are plastic “straps”. They have something like plaques on them. The end of the belt is inserted into the plaque and tightened. Fastening is not as reliable as wire fastening, but it is sufficient for fastening rods in the foundation of a private house.

Tying reinforcement with plastic clamps

In addition, plastic has advantages over steel reinforcement. The polymer does not rot, even if it comes into contact with water. In addition, working with clamps is simple and non-traumatic. With wire, you can still get hurt and scratched.

An additional advantage of clamps is self-sufficiency. No additional tools are needed to work with plastic belts. The only problem is that in sub-zero temperatures it is difficult to use polymer fasteners. Plastic hardens in the cold. The connections are poor. But you can work with wire in any weather.

Most often people think about clamps when deciding how to knit fiberglass reinforcement for the foundation . The design is 100% polymer, excluding the weaknesses of metal in terms of intolerance to atmospheric phenomena and moisture. However, there are also complex clamps.

A thin wire is implanted into these. Plastic protects it and makes it easier to work with. But clamps, even ordinary ones, are about 3 times more expensive than wire for the same number of fasteners.

The tying methods already described provide sufficient fixation of the reinforcement rods laid in the foundation pit. However, if the frame needs to be made separately and then moved to the main place, it will fold. Welding provides rigid fixation, but its disadvantages have already been discussed.

It is advisable to leave minimal play in the rods. Double knitting comes to the rescue. It requires hard training and involves simultaneously tightening steel rods on both sides. The scheme is difficult to explain in words. It's easier to watch a training video. It should have 5 steps. Exactly as much in double knitting.

There is also a scheme for connecting two spatial frames into one volumetric one. It already consists of 6 steps. Having mastered them, you can prepare reinforcement in advance while the foundation pit and formwork are being prepared. Then all that remains is to move the frame.

How to knit corners of foundation reinforcement

Knitting the corners is a separate issue, since they account for the lion's share of the load. In addition, angles are right, acute and obtuse. The acceptable method of knitting depends on the configuration. Blunt connections are made rigid, overlapping.

Correct knitting of foundation corners

It is produced by bending one of the free ends of the reinforcement. Afterwards, the inner horizontal rod is attached to the same outer one. An internal horizontal rod is attached to the resulting bundle.

Fasten with a paw. Its length is equal to 35-50 diameters of the longitudinal reinforcement. As for the step between the corner transverse rods and the vertical ones, it is equal to 3/8 of the height of the foundation.

The corners of the joints in the foundation are secured with U- or L-shaped clamps. 90-degree joints of reinforcement bars are usually fixed with L-shaped anchor elements. Almost always the process consists of 5-6 steps. To master them means to provide the house with a bright, that is, strong future.

Source: https://zastpoyka.ru/kak-vyazat-armaturu-dlya-fundamenta/

Hook for tying reinforcement: making a tool for knitting with your own hands

Reinforcement hook is a tool designed for tying reinforcement with special wire. Externally, it is a metal rod with a curved end, necessary for gripping the wire. There is a handle at the other end. You can buy a hook in a store or make it yourself . The second option is preferable, because factory-made products may have a thin rod or an awkward bend in the hook.

Depending on the work performed, a variety of tools :

• Simple hook. It consists of a curved rod with a curved hook. They are gripping the wire. On the other side there is a handle with a bearing built into it. Thanks to him, the tool rotates and the loop is tightened tightly.
• Screw hook. The principle of knitting wire is the same. But this hook for knitting reinforcement is a mechanized device. A worm gear is built into the design. Thanks to this, there is a forward movement of the hook during its rotation. The knitting speed increases significantly. But the cost of the product also increases. Therefore, it is used for large volumes of work.
• Guns for fastening. Such products are used in the case of tying reinforcement for large foundations of buildings, where there are thousands of nodes. The operation of the pistol is automated. It is threaded with a coil of wire. Once the reinforcement is aligned , the gun automatically forms a knot in the desired location. Then the excess wire is cut off. The disadvantage is the excessive consumption of material, but this is compensated by better tension. The knitting speed increases significantly. The device is expensive, so it is used only on large objects.

Making a tool from an electrode

You can make a crochet hook for reinforcement with your own hands from wire with a diameter of 4 mm. For this purpose, welding electrodes as they are the most durable.

The manufacturing procedure is as follows:

• A small loop is formed at one end of the wire. It will serve as a support for the handle. The loop is made carefully so that the end is rounded towards the rod. During work, this place should not cling to clothing.
• In the central part, the rod is bent at an angle of 30 degrees in the shape of a rocker arm.
• Several washers are threaded onto the rod until they stop with a loop. This place will fix the handle.

The handle can be made in different versions:

• Take 2 tubes, constituting 1/3 of the length of the rod. If the rod is 4 mm in diameter, then one of the tubes should have an internal diameter of 5-6 mm. It is put on a rod. The second tube should have a larger internal diameter. It is put on from above, and the entire system is riveted with a hammer.
• 1 tube is taken. Slides onto the rod. The washer is welded to the handle and rod for fixation.
• A handle with a hole for a rod is turned from dense wood on a lathe. Instead of wood, you can use a polymer pipe . A washer is welded for the stopper.

If you do not make a ring at the bottom, then you also need to weld a washer.

At the last stage, the opposite part from the electrode handle is sharpened into a cone shape . Using pliers it is wrapped. A hook is made for tying the reinforcement of such a length that it is convenient for them to work.

A tool for tying reinforcement can be made on the basis of a screwdriver . A pre-prepared hook of the required length and shape is inserted into the screwdriver chuck. The work process is the same as when knitting with a manual device. The main thing is to choose the right operating mode for the equipment. The main parameter is the rotation speed.

When using an automatic gun, knot tying occurs at a speed of 1 knot per second. There is no need to cut the wire ; it is cut automatically.

Crochet technology

Regardless of the type of device, the knitting technology is the same. The work is carried out according to the following scheme:

• The cut wire is folded in half.
• It is stretched under the intersection of the reinforcement.
• The free ends of the wire are crossed.
• The hook is pulled through the wire loop and hooks the loose ends.
• Rotational movements begin, during which the wire is wrapped.
• The hook is removed and the knot is checked for strength.

When checking the strength of the connection, the rigidity of the structure . She must be motionless.

The process of knitting with a screw product is the same. The difference lies in the finishing stage. When threading a hook into a loop, you do not need to wrap it yourself. Thanks to the worm mechanism, just pull the handle towards you and the rotational movements will begin automatically.

The wire material used is low carbon steel . To prevent rupture during knitting, it must be held over the fire. After cooling, it is ready for use. Its diameter can be 1 mm, 1.2 mm, 1.4 mm. Parameters are selected based on experience. A wire that is too thin will break, and a wire that is too thick will be difficult to work with.

When fastening reinforcement, it is expensive to use welding . A knitting device is the best option. It is easy to make it yourself from scrap materials. This device performs high-quality work and is inexpensive.

Source: https://tokar.guru/metallicheskie-izdeliya/armatura/opisanie-sozdaniya-kryuchka-dlya-vyazki-armatury-svoimi-rukami.html

How to properly knit and bend reinforcement for foundations: installation technology

Reinforcement cage indicating strapping locations

In all modern foundations, construction is not complete without the use of reinforcement - interconnected metal rods that absorb tensile stresses when used in conjunction with concrete. The frame creates vertical and horizontal belts, serves to increase the strength of the structure and uniformly distribute loads.

If the reinforcement is weakly or incorrectly connected, it will creep apart, thereby compromising the integrity of the foundation. This will lead to its slow destruction. Tying the rods together is quite simple, but highly specialized specialists know well how to properly knit reinforcement for the foundation.

The frame connection scheme is almost the same for all types of foundations, except for columnar wooden or metal ones, where a frame is formed on top of the pile head using reinforcement or beams.

They are connected to the head and welded, in which case the rods or wire rod have to be bent at a specific angle.

Three methods of tying reinforcement cages

Schematic representation of reinforcement tying technology methods

To form the metal frame of the base, three strapping methods are used:

1. Welding. At first glance, welding is the simplest and most effective way to connect reinforcement, but in practice everything looks different. During welding, the metal is heated to high temperatures and deformed, which results in a partial loss of rigidity. You also have to hire a professional welder who knows about the properties of the metal and can avoid burning it, and this is an additional financial expense. There is also a risk of destruction of the welding site during operation of the industrial vibrator. Difficulties arise if you bend metal close to the welding site.
2. Connection using bent wire or plastic clamps (ties). This method is popular among many developers, since the connection can be made with your own hands in a matter of minutes. If flexible wire is used, then a special tool must be used to connect the links. Plastic clamps are more reliable than wire, but are more expensive. The connection diagram is similar, only then you have to bend the rods at the required angle.
3. Overlapping. This method involves overlapping reinforcement with further fixation with wire. It is practiced more for horizontal belts made of mesh, and a vertical smooth rod is used inside the joint.

Any of the above methods can be implemented with your own hands. In this case, you have to bend the metal, which is quite problematic, given the rigidity of the reinforcement and its minimum diameter for horizontal chords of 12 mm.

Knitting reinforcement with your own hands

With all the variety of specialized construction tools, not all private developers have the opportunity to buy or rent them. Knitting rods does not require expensive tools; moreover, you can do it yourself.

To do this, you need to purchase steel binding wire. It is quite flexible and durable, has a diameter of 2-3 mm. To bend it, you will have to use pliers or a specially made hook, which subsequently twists around the reinforcement and fixes it. Some craftsmen who perform reinforcement with their own hands sometimes use a screwdriver as a simpler and easier way to knit. If you knit with wire, you will need:

• One of the options for knitting the base frame using a hook. Craftsmen sometimes use a screwdriver as an easier way to knit reinforcement bars with their own hands.

  cut a piece of wire about 30 cm long. You can do more if you don’t mind it, but the ends will get in the way (including excess waste);

• then fold the wire in half to increase rigidity and strength;
• bend it diagonally around the reinforcement joint and make a small loop;
• Place the hook in the loop and twist clockwise evenly, without unnecessary effort, until it becomes difficult to wrap or the connection becomes strong enough. The main thing is not to use force, since it is easy to break the wire and then you will have to start all over again;
• Cut off the ends of the wire with pliers and discard.

In the case of reinforcement of a columnar foundation, the reinforcement cage can be bent and then fixed to the heads with special clamps. Some manufacturers already supply metal or wooden piles with special clamping brackets and couplings.

In this case, it is enough to bend the rod and insert it into the bracket. Clamp the bracket and boil it on top; you can do all this yourself, using a minimum of tools.

In the case of using smooth reinforcement, the tying process is more labor-intensive, since the hooks will constantly bend and cannot be done without a specialized tool at hand, as well as without outside help.

It is better to knit the reinforcement cage for a slab monolithic foundation from several belts. For the horizontal tier, spiral rods with a cross-section of up to 16 mm are used, and for vertical links, smooth rods with a cross-section of up to 10 mm are used. When installing the lower mesh, it is recommended to use plastic expansion joints, which will create a uniform pitch. Then, when knitting vertical rods, it is important not to forget to take them outside the foundation, due to the fact that load-bearing walls will be connected to them.

Using plastic ties for knitting is a more expensive option for replacing wire, but clamps (ties) can be found in any household. The principle of tying is similar, but the plastic for the ties is less durable. Therefore, it is better not to use force during installation.

The most popular clamps have a special core at the end of the tie; they are used to secure cables and pipes to vertical surfaces. Plastic showed excellent results when knitting with your own hands in warm weather; in cold weather it quickly loses its elasticity and bursts.

matings:

Tying reinforcement for the foundation according to all the rules

Sketch of the technology for correctly creating connections between reinforcing bars and crocheting

It is quite possible to knit reinforcement using available materials. But it is worth noting that correctly tying the rods together does not guarantee compliance with all building codes and high-quality installation. Since the pattern of knitting the frame depends on the type of foundation, its size, thickness and type of material used. Therefore, you need to take into account several key rules:

1. If mesh is used as a reinforcement frame, then the strapping must be overlapped.
2. Taking into account the type and cross-section of the reinforcement, it is necessary to calculate the length of the bypass at the connection points.
3. The rods must be bent strictly at a certain angle and evenly.
4. The grade of concrete and working conditions at the joint are taken into account. The minimum overlap length is at least 25 cm.

If reinforcement is carried out at a height of 3 meters or more, then scaffolding or scaffolding is indispensable. The strapping technology turns out to be more complex, due to existing safety rules for working at height. Tying is carried out in three stages:

1. First prepare the reinforcement and tie slings to it.
2. Raise to the required height, level and place in plastic guides.
3. Tie the rods using any of the listed technologies.

Work at height should be carried out only with several workers at a time, provide insurance and control the process of lifting the rods and then installing them in the specified places. Doing this yourself without insurance is strictly prohibited.

The cost of strapping is relatively low, since craftsmen can process several square meters of frame in an hour. And when using special knitting tools, it’s even faster. And they guarantee the quality of the knitting of the rods and compliance with all construction standards, especially since the rods will be bent with special pliers.

instructions

Source: https://FundamentClub.ru/armirovanie/kak-pravilno-vyazat-armaturu.html