Reinforcing mesh weight. How is the calculation of the reinforcing mesh in the construction of various objects Construction mesh calculator

Reinforcing mesh weight

The concrete casting used to create the foundations is itself a fairly solid structure. However, its strength is great only in one direction - namely, concrete resists pressure well.

But concrete foundations can also be affected by loads in other directions. For example, it may be affected by bending, twisting, and so on. The soil is a heterogeneous substance and, when frozen, can change its structure and volume, expanding in different directions. In order to give the concrete casting strength and resistance to impact in any direction, a metal power frame is introduced into the body of the concrete casting.

The metal frame in concrete castings is used not only in the construction of foundations. It is also created in other concrete work, for example, in the construction of stairs or when creating a leveling cement-sand screed.

The metal frame of a concrete casting can be created in a variety of ways. So, a spatial frame can be created from metal bars, which are interconnected at the intersections. The rods can be fixed with knitting wire, clamps or electric welding.

An excellent solution when forming a metal frame can be the use of a reinforcing mesh.

Reinforcing mesh. Characteristics and examples of use

Reinforcing mesh is formed from metal wire or from reinforcing bars of a larger cross section in industrial production. This achieves the accuracy of the mesh step sizes, which has a positive effect on the overall quality of the reinforced concrete structure.

In the process of its manufacture, pieces of wire or reinforcing bars are laid out with a certain step, and then at the intersections they are fixed by electric spot welding.

Reinforcing mesh is widely used in the construction industry, both for exterior and foundation work, and for interior interior work. Laid in several horizontal layers in the foundation and connected by vertical lintels, the reinforcing mesh becomes an excellent load-bearing frame for reinforced concrete casting. Reinforcing mesh, laid in one layer on the floor surface, can become the basis for floor screed or for fixing a system of warm floors with liquid heat carrier. In addition, using a reinforcing mesh, it is possible to form complex durable reinforced concrete structures, for example, entrance stairs.

Reinforcing mesh - photo

Reinforcing mesh types

Reinforcing meshes can be classified according to several parameters. First of all, the reinforcing mesh can be divided into types based on the thickness of the source material used:

If the reinforcing mesh is made of a relatively thin metal wire, then it is conventionally called "thin",
In the event that the reinforcing mesh is made of a thick metal bar, then it can be conditionally called "thick".

In addition, the reinforcing mesh can be produced with varying degrees of accuracy.

Ordinary welding accuracy can stand out, quite suitable for outdoor construction work and reinforcing mesh with increased accuracy. The accuracy of welding of reinforcing mesh elements is indicated by numbers after the letter "P" in the marking.

Reinforcing mesh sample

Separately, it should be said about the form in which the reinforcing mesh is supplied from industrial enterprises. Depending on the thickness of the elements used, the mesh can be supplied from the factory in the form of flat plates or in the form of rolls.

In addition, depending on the purpose, the reinforcing mesh can be manufactured with different cell configurations. They can be rectangular or square.

Reinforcing mesh sheets

Features of the use of reinforcing mesh

Reinforcing mesh can significantly reduce the time for construction work using concrete castings.

With the classical method of forming a power frame, it is created from individual metal rods. At the same time, the creation of a spatial frame seems to be a rather difficult task. Each intersection of reinforcing bars must be fastened.

Fixing the intersections of reinforcing bars can be done using loops of knitting wire. It is folded in half, wrapped around the intersection and twisted using a pointed hook or special automatic devices.

Naturally, such a fixation can take a lot of time and effort. Therefore, in some cases, when carrying out foundation and general construction work, it is advisable to use a ready-made reinforcing mesh.

Reinforcing mesh weight calculation

Calculating the weight of the reinforcing mesh can be useful for determining the total weight of the building structure, as well as for calculating logistics - that is, methods for delivering building materials to the construction site of the building.
In order to calculate the weight of the reinforcing mesh first of all, it is necessary to find out the diameter of the used metal rod or wire, the pitch between the wire or rods and the configuration of the cells.
So, the step between the wire or rods can be from 5 to 25 centimeters. When creating a reinforcing mesh, both a wire with a diameter of 3 millimeters and a reinforcing metal bar with a diameter of up to 12 millimeters can be used.
Mesh labeling uses standard notation to help you calculate the weight of the mesh.
So, if the reinforcing mesh is marked "150x150x5", then this means that this product has a cell of a square configuration of 15 by 15 centimeters and is made of wire 5 millimeters thick.
In order to calculate the weight of the reinforcing mesh, you can use the table given in our article.

Table for calculating the weight of the reinforcing mesh

Please note that different manufacturers may use non-standard mesh sizes. In this case, it is necessary to calculate its weight individually, using special formulas. A good solution would be to use mathematical spreadsheets for such a calculation.

In addition, the reinforcing mesh can be produced with various coatings. So, a number of enterprises produce galvanized reinforcing mesh. This mesh has an incomparably longer service life and can also be used for outdoor finishing work. For example, to create fences or barriers.

Reinforcing mesh weight
Learn more about how to determine the weight of the reinforcing mesh, and the calculator will help you make the calculation.

Steel reinforcement mesh is most often used to reinforce various structures. It is made from a metal thread of different diameters, may have additional protection against corrosion. The small specific weight of the reinforcing mesh simplifies its installation and transportation.

The quality of this product

Characteristics of welded meshes depend on their purpose:

masonry and road;
strengthening of thermal insulation and glass.

Use low carbon wire. Bars of different lengths are welded by resistance spot welding. Corrosion protection is carried out by polymer coating or galvanizing, which is carried out in several ways:

galvanization of rods before welding;
electrolytic method;
hot cover.

Reinforcement without a galvanized layer is called light.

Corrugation of 1 or 2 layers is applied to the welded mesh for glass, thermal insulation.

Characteristics of welded metal products, according to specifications 14-4-1284-84

The mass is calculated depending on the size of the cell, the distance between the axes of the wire, the presence of galvanization:

Grid area to mass conversion tables

Reinforcing metal products are used for the following purposes:

reinforcement of reinforced concrete products;
coast strengthening;
reinforcement of the roadway;
in the household (making a fence for poultry);
territory fencing.

The mass of 1 square meter of a metal product depends on the length, width of the cells, the sectional area of the bar, and the specific gravity of the material. The size value of the bar Ø ranges from 0.5 to 8 mm.

Form of release of products from welded fittings:

rolls;
cards;
panels.

The dimensions of the reinforcing mesh depend on the release form. Products in cards reach a length of 6 m. The maximum width is 2 m, the minimum is 35 cm. Two-meter panels have a width of 2.5 m. Rolls are produced with a width of 0.2–2 m, a length of 15–118 m.

The dimensions of the windows depend on the purpose, they are 6 * 6–20 * 20 cm. There are rectangular ones, with different overall values.

Standard TU 14-4-1284-88

Products according to these specifications are produced with square and rectangular windows.

From light, with a large cell size, they build cages for keeping birds and fur-bearing animals. It is used to strengthen reinforced concrete structures, making them stronger. But for this, the metal mesh must be of high quality. You should not use a product in which the welding points are located not at each point of contact of the rods, but through one. This technology significantly reduces the quality. This may affect security.

Welded fittings, according to specifications 14-4-184-93

The mass of 1 square meter of a metal product with the same thickness of the rod will be the greater, the smaller the size of the cell wall:

Parameters in centimeters	Type of metallic thread	Weight 1 sq. meters to grams
1,6*2,4	WITH	2480
1,6*4,8	WITH	1990
2,4*2,4	WITH	1970
2,4*4,8	WITH	1500
3,2*4,8	WITH	1250
1,6*2,4	O	2810
2,4*2,4	O	2220
1,6*4,8	O	2240
2,4*4,8	O	1710
3,2*4,8	O	1410

Note:

WITH- light type.
O– galvanized type.

For construction work, bars with a diameter of 0.6, 0.8 and 1 cm are used. The higher the load on the structure, the stronger the mesh should be, the larger the diameter of the wire.

The cell size depends on the material to be reinforced. To fix the brick structure, a wall length of 5 cm is enough. For a cement screed, these indicators will not be enough, you need to use smaller markings.

Steel products BP-1 from fittings V500S

Calculations were made when cutting 2000 * 6000 mm:

Reinforcing products are used as a base for marble masonry. It makes the structure stronger, more durable, prevents the formation of cracks.

For site fencing, it is advisable to take galvanized products that are not affected by weather factors, therefore they are much more durable and have a better appearance.

Comparison table of class B500C with reinforcing bars of other classes

You can find out the mass of 1 meter of a metal product from reinforcement using the formula 0.785d 2, where d is the diameter of the metal thread, 7850 is the specific gravity of the wire in kg / m 3.

In order to significantly increase the strength of monolithic concrete structures, a special reinforcing mesh is used. To correctly perform all the necessary installation operations, you will need to know how to calculate the reinforcement mesh. If you do not know the weight of the material, its length and the value of the load that the structure can withstand, you will never be able to perform the correct reinforcement.

Improper strengthening of reinforced concrete structures can lead to serious consequences. Cracks will appear, the service life will be significantly reduced, sometimes this can lead to the destruction of a building or structure.

In this article, we will analyze in detail all the issues related to the calculations and selection of the necessary material for the construction of various facilities.

First you need to figure out why they generally perform the procedure of reinforcing reinforced concrete structures for various purposes. First of all, this is necessary in order to make the building object more durable and monolithic. The mesh will tighten the concrete, thereby increasing rigidity. This will allow you to withstand heavy loads, as well as increase the service life.

The reinforcement procedure is quite complex and requires high precision. Therefore, before starting to strengthen concrete structures, it will be necessary to perform all the necessary calculations of the main indicators and characteristics. This will help not only to choose the right material, but also save a lot. You will know exactly how many relevant products to purchase.

Various building structures (floor, interfloor ceilings, walls, supports, slabs, etc.) require strengthening. Depending on this, a specific reinforcement scheme is selected. This scheme includes a number of rules and basic provisions, in accordance with which the installation and assembly of the metal mesh will be carried out. Accordingly, the calculations of the main parameters will be performed in different ways.

How to calculate a reinforcing mesh - the main parameters for the calculation

The following parameters will need to be defined:

The exact amount of reinforcing mesh;
The total mass (weight) of the required products;
The principle of laying the grid;
Bearing capacity and maximum allowable external loads.

If it is required to strengthen the foundation of a building, then in this case there must be both a longitudinal and a transverse reinforcing layer, which are laid at a certain distance from each other. The grid has standard sizes, which are not always enough to cover the entire area of \u200b\u200bthe base. Therefore, it is necessary to connect several products, as a result of which joints appear. For high-quality connection of joints, steel wire is used.

If reinforcement of the interfloor ceiling is performed, then it will be enough to lay two layers here and connect them in a strictly parallel position using high-quality wire. In the case of building walls or a strip foundation, the reinforcing frame can consist of three layers. When reinforcing columns and supports of various types, the frame is laid and connected in a round or rectangular position.

Cell size, mm	Open, m	Weight m 2, kg.
1001004	2*6	1.84
1501504	2*6	1.22
2002004	2*6	0.92
1001005	2*6	2.88
1501505	2*6	1.92
2002005	2*6	1.44
1001006	2*6	4.44
1501506	2*6	2.96
2002006	2*6	2.22
1001008	2*6	7.9
1501508	2*6	5.26
2002008	2*6	3.95
10010010	2*6	12.34
15015010	2*6	12.38
20020010	2*6	6.19
10010012	2*6	17.8
15015012	2*6	11.84
20020012	2*6	8,88

6 parameters to consider when choosing a mesh

Determining the main characteristics will help not only to calculate your costs, but also to understand which products in each case are best suited. The metal mesh is selected depending on the reinforcement scheme and the features of the building object.

There are six main parameters to consider when choosing a grid:

The diameter of the steel bars from which the product is made;
Relevant product class;
Values of ultimate loads;
The values of the mass and length of the product;
The specific place of installation and the shape of the reinforced concrete structure;
Product price.

The diameter of the rods will be one of the most important indicators that you should pay attention to in the first place. The number of perceived loads, and, consequently, the strength of the structure, will depend on this indicator. The thicker the mesh rods, the more loads it can withstand. The diameter will affect other indicators. For example, the larger it is, the greater will be the mass and price.

To strengthen heavily loaded slabs and bases, products with a bar thickness of 13 to 30 millimeters are used. Elements of buildings or structures that are not exposed to large external forces can be reinforced with a mesh with a rod diameter of 8 to 12 millimeters. In some cases, combined options are used when a mesh with different thicknesses is used in one reinforced concrete structure.

How to calculate a reinforcing mesh

The calculation of the reinforcing mesh is divided into two main stages. At the first stage, the loads that will be affected are calculated, and at the second stage, it is determined how many products are needed.

Determining the loads will help you understand how much weight the finished structure can support, as well as what forces and in what places will influence. Based on the received data, a grid of the appropriate size is selected. Only after that you can begin to determine the required amount of metal products.

The first stage of calculations is rather complicated and requires professional skills and knowledge. Special formulas are used here, taking into account many additional coefficients. If you do not have sufficient knowledge, then this work is best entrusted to trained professionals. When erecting large buildings or structures for various purposes, all necessary calculations are performed at the design stage.

Calculation of the required amount of material

After all the necessary indicators of the future reinforcing frame have been determined at the first stage, you can begin to determine the required amount of material. There is nothing complicated here, all you need is a simple calculator and a piece of paper. Knowing the geometric dimensions of the frame and the standard dimensions of the mesh sheets that are sold, you can calculate the required amount of material.

With the result obtained, you can already go to the seller and order the quantity that is necessary for the manufacture of a reinforced concrete structure. In this case, you will never have extra reinforcement, plus you will save a little on this.

Reinforcing mesh calculation table:

1 meter armature = 1 m x (0.785 x D x D)
In brackets is the area of the circle. D - diameter.
Specific gravity =7850 kg/m³

If you want to get the weight, then you need to multiply the volume by the specific gravity.

Example

We calculate the volume: 1 m x (0.785 x 0.012 m x 0.012 m) = 0.00011304 m³

We consider the weight: 0.00011304 m3 x 7850 kg / m³ = 0.887 kg

How and why is weight calculated

Determining the weight of the mesh for reinforcement is performed in order to understand how much the finished building object will weigh. This parameter will also be very important when choosing ways to deliver products to the construction site.

First you need to know the diameter of the rods from which the grid is made and the geometric dimensions of the cells. There are special tables that indicate the weight of the product, depending on the above parameters.

If an individual order was made for the manufacture of mesh of non-standard sizes, then you will not be able to calculate the weight of this product from the table, because it takes into account only standard sizes. In this case, it will be necessary to use special formulas for the calculation. If you do not want to do this yourself, you can delegate the task to experienced professionals who will calculate everything in a short time.

What is a selection calculator

On the Internet, you can find various online calculators that help you determine all the necessary parameters in a few clicks. These are specially programmed algorithms. For the calculation, you will need to specify the basic parameters, and the program will give you the result.

There are two types of calculators. The first type helps to determine the loads, and the second one helps to calculate the weight and cost of rolled metal. The load calculator gives only a general idea, but not exact data. Therefore, it cannot be used for drafting a project. Accurate load values should only be calculated by experienced people and using special formulas and algorithms.

You can use the weight and price calculator to the fullest. It gives fairly accurate readings. The program has several fields to fill in. They indicate the thickness of the rods, the dimensions of the cells and the cost of one ton of a particular product. If it is necessary to reinforce structures of a rather complex shape, then the mesh will have to be cut. In this case, the additional percentage must be taken into account. In most cases, this is no more than 5 percent.

After you have filled in all the fields, click on the calculation button, and the calculator will give you readings of the weight of the material and the total cost. Finding such programs on the Internet is very easy, just enter the appropriate query in the search box.

For high-quality strengthening of various reinforced concrete structures (floor, floors, slabs, blocks, supports, bridges, etc.), you need to know how to calculate the reinforcement mesh. This procedure consists of several steps that must be sequentially performed. Each of these stages we analyzed in detail in the article.