Installation of the valve in the belt foundation

As is well known, concrete is an incredibly durable material, but in the case of the foundation, as well as many other concrete structures, it is necessary to apply a high-quality reinforcement.In modern conditions to send in building materials supermarket and purchase the necessary amount of metal reinforcement.This decision clearly reinforce the foundation, even if we have reason raised with not very high-quality solution.

Regarding the use of rebar for reinforcement, in this case it is necessary to conduct a detailed calculation, allowing you to install the required number of base metal elements.It should be noted in advance that this calculation must take into account not only the foundation area, but also the specificity of its construction.

In this article we will look at the specifics of the use of reinforcement in the strip foundation.This type of foundation has its own peculiarities, which we'll talk further.In addition, there are many options for creating a reinforcing frame.In some cases, builders are able to save money by using smaller amounts of reinforcement.It is also very important to pay attention directly on the reinforcement of self assembly process.

specifics of calculating the required amount of reinforcement

When it comes to calculating the valve, there is need to set the required amount of this product, its diameter and length.Moreover, the market can find different types of valves.Often in DIY stores have the following types of products:

• fitting with an annular profile;
• fitting with sickle-shaped profile;
• mixed reinforcement profile.

In the case of strip foundations builders are advised to use any of these types, but at the same time is not recommended to use products, which do not have an edge.This fixture is suitable for many other purposes, however, the concrete will fasten it not the best way.In turn, any ribs provide adhesion to the concrete, so the entire structure would be sufficiently strong.

Regarding the reinforcement diameter, then the market can find a variety of options, but it is recommended to use metal products 10-20 mm in diameter to create a continuous footing.The bars to be positioned vertically, and may have a diameter of about 6.8 mm.

Then you need to determine the minimum content of reinforcement in the strip foundation.To do this, use the official SNIP standards, which represent the most authoritative data on construction works.Thus, in paragraph 7.3.5 indicates that the minimum content of longitudinal reinforcement should be less than 0.1% of the sectional area of ​​the tape.For example, if we have a foundation 1200 mm high and 400 mm wide, then the total cross-sectional area of ​​reinforcement must be 480 mm2.This is the same minimum value that allows you to be confident in the reliability of the building structure.In that case, if the construction of the foundation is not enough reinforcement, it is advisable to freeze the project, because it can subsequently occur emergency.

Determining the right amount of longitudinal reinforcement bars

In order to determine the number of longitudinal metal products, it is necessary to take advantage of past calculations and share the resulting value to the cross-section of the selected fixtures.Thus, we get the exact number of longitudinal bars.In this case, we can also take advantage of building standards, if some values ​​are not fully consistent with the draft.

At the same time a SNP can be found useful tables that allow to determine the amount of reinforcement required for the foundation, depending on the diameter and the total number of rods.Thus, one can pre-assess their financial expenditures to strengthen the foundation.

optimum reinforcement scheme

the Internet you can find a huge number of schemes of reinforcement of foundations and other concrete structures, but it is necessary to pay attention on the simplest options that certainly does not create problems even for novice builders.

Experts often recommend to carry out reinforcement of the square or rectangle.Accordingly, the width of the frame should be no more than half of its height.It should be borne in mind that the strip foundations are often a narrow, but very long, so the foundation will be exposed to greater longitudinal extension.Thus, vertical and transverse reinforcement elements are greater in the degree of structural elements of the foundation.

Thus, if we chose a rectangular reinforcement, the height of the foundation metal should be greater than the width.It turns out that we have 4 lines of longitudinal reinforcement.The number of cross-members - is not so important.The main thing - to make sure that the design was robust and pouring concrete is not happening any deformations.

Specificity mating fittings

course, binding reinforcement is a very important process, which depends not only on the reliability of the reinforcement, but also the overall geometric accuracy of the valve arrangement.Accordingly, if we will fix insecure fittings, it can change its position during concrete pouring.Moreover, this error will be extremely difficult to fix, if the concrete is already poured and gaining strength.Often used are 2 ways to mating fittings:

• Using wire.Yes, indeed, for such events is enough to use the most ordinary wire, which bind reinforcement elements.Of course, for this we need to use a solid wire, which when bent will not be damaged.It is advisable to carry out a small test of strength of the wire, as the risk is simply impossible to create the foundation.Most often, for the binding of two or three fittings required about 30 cm wire.Save on this matter is certainly not to be.
• by welding.It is said that welding is used for such work is much less common, but there are certain advantages and this method of attachment fittings.First of all we get a reliable seam that uniquely support the weight of concrete.Moreover, this option allows the attachment to be sure that the valve is not displaced during concrete pouring.

Also there are many other options for reinforcement binding.For example, often uses hooks or electric screwdriver with a special nozzle.

In addition, some experts recommend the use of welding to connect the valve only in desperate situations, as this process is somewhat impairs the reinforcing properties of the valve.

Features reinforcement angles strip foundation

specialists who are engaged in various construction projects, claim that the reinforcement corners of the foundation - it is the most difficult task, which creates a lot of problems.Building standards in many states that the corners armature, serving as reinforcement, should be curved.Of course, few will be specially bent rebar for this process, so often involve the construction of direct material.

It is reported that in this case there is a high probability of occurrence of cracks at the corners of the foundation, which then creates a lot of problems associated with the base strength and the entire structure.

Thus, there are two options for strengthening the foundation of angles:

• Reinforcement L-shaped reinforcement.In this case, a curved armature, you can use multiple elements, arranging them overlap.In this scenario, the reinforcement will be the most effective and reliable.
• Reinforcement U-shaped reinforcement.Everything here is almost the same as in the case of the last option of strengthening, but U-shaped reinforcement provides greater reliability, even though it will have to use more metal products.

Definitely need to use a transverse reinforcement, which is at the corners of the foundation will serve to add the area of ​​all the designs.And the matter does not depend on whether we have a corner - a straight, sharp or blunt.

Again, refer to the building standards, which indicates a lot of information directly on the reinforcement of the corners of the foundation.Indeed, there there are many situations where a corner of the foundation will have the original design.

remaining issues related to the reinforcement strip foundation

Before attempting to install the valve in the belt foundation, it is necessary to consider some important issues that are uniquely important in this process.

• Selecting fittings.As we have said, the choice of valves should pay attention to the diameter and other dimensions of the material.Thus smooth armature better not to use it.However, if desired smooth metal products can be used as a transverse reinforcement.We would like to note that the installation is best to use the same valves.The point is that, in the cross-linking structure using only one valve, and longitudinal - the other, but in the same positions is better to use the same type of products.In that case, if the owners use valves of different diameters, lengths and profiles, problems may be encountered.First of all we are talking about on the base load.If in some place fittings will be less durable, and the load on the foundation is too high, the base can be covered with cracks.This allow, of course, impossible.
• Specificity knitted reinforcement.We have already mentioned the most common way of connecting valves to create a robust design.At the same time we should not forget that combine connection methods still not worth it.Moreover, in the overwhelming number of cases used mated using wire.One need only stock up on a large coil of material to securely connect all the reinforcement elements.In that case, if errors are detected in the structure (perhaps even the smallest), the wire can simply be removed or nipper then rectify the situation.In the case of welding, all much more complicated.For the quality welding needs money.Furthermore, it is obvious that after a given event to change the location of reinforcement elements will not be possible.In addition, as we have said, the specialists in the construction industry strongly recommend to abandon in favor of welding reinforcement using tying wire.
• Overall structural strength.At first glance, the design, consisting of valves, may seem strong enough.Moreover, even small tests can demonstrate admirable resistance to deformation structure.Unfortunately, not everything is as simple as it might seem at first glance.For example, if the casting is going to happen with specialized vehicles (Mixer Truck), it may be a problem related to the reinforcement of stability.During the fill weight and a strong set of concrete mix can greatly affect the design.If in some places fixing wire was enough weak, it will manifest itself immediately.Accordingly, in such a situation, you should either check every connection, or manually produce concrete pouring, doing everything to ensure that the reinforcing structure is not shifted one millimeter.
• Consumption.We have already considered the issue of the necessary volumes of rebar.It is said that many owners specifically uses more reinforcement to the foundation became stronger.In fact, no positive effect of such actions is not, so you should use the most minimum value of the amount of reinforcement, which is provided in the construction standards.