How many rods are in 14 fittings in a ton. Specific gravity of reinforcement of all diameters

Today we will talk about how much the armature weighs, and about the maximum length of a metal rod. For the most part about how many meters per ton of reinforcement, but about other diameters will also be considered.

Rebar weight, how many meters in 1 ton?

During construction, it is necessary to have an accurate idea of ​​the weight of the entire reinforced structure as a whole. There are a number of reasons for this:

• This makes it possible to withstand the reinforcement technology.
• Ensures the required structural reliability.
• It is more convenient to calculate the total cost of the structure.

The greatest attention is paid to a rod with a diameter of 12 mm, because this is the minimum value of the diameter that is allowed to be used when creating structures for a strip foundation. And of course, do not forget about the significant factor that during construction, it is very important to know exactly how many meters of reinforcement will be required for one ton of planned products.

How much reinforcement weighs and also the amount of reinforcement in a ton, table:

The weight of a meter of reinforcement is presented in the table of the ratio of diameter and mass of 1 m.Knowing the weight of reinforcing steel in accordance with GOST 5781-82, it is possible to estimate the coefficient of reinforcement of the structure (the ratio of the mass of reinforcement to the volume of concrete) and determine how much material is needed for the foundation (per cube of concrete)

Linear meter of reinforcement - individual reinforcing bars of a smooth and periodic profile 1 meter long, the weight of which depends on the diameter of the reinforcing steel GOST 5781-82 (from a number of sizes of the diameter of periodic steel - 6, 8.10, 12, 14, 16, 18.20, 22, 25, 28, 32, 36, 40, 45, 50, 55, 60, 70, 80 mm).

Judging by this table, 1,126 meters of reinforcement with a diameter of 12 mm make up one ton of the product.
From this table, you can also find out the length of the reinforcement in one kilogram and its mass in one meter of all sizes.

These values ​​will be useful to you when using a metal bar directly, if, for example, you need to find out what is the mass of all the reinforcement used in the construction of a building. To do this, you just need to add up all the lengths of the reinforcing bars and then multiply the sum by the weight of 1 p / m.

It should be noted that 10 mm reinforcement still exists and is used when pouring foundations. But this is found only in the transverse, that is, in the auxiliary reinforcement. In addition to these factors, one should not forget that only those rods that have the "C" symbol in their marking are subject to welding.
This whole long process is necessary, since during construction it is necessary to know the length of the reinforcement, and when purchasing it, the mass (weight) is important.

Reinforcement diameters according to GOST 5781-82

Do not forget that the number of rods per ton can vary, because it directly depends on their length. For example, rods with a length of 10 meters will need much less than rods with the same diameter, but 2 m long.

If you need to know the weight of a running meter of pipe, fittings or other rolled products, then the most convenient and simple solution is our metal calculator.

First, you select the nomenclature for which you want to calculate meters to tons.

Next, you select the size of the product.

For the convenience of using the calculator, we have developed an interactive search bar that will facilitate the selection of product sizes

If it is a round bar, then the list contains diameters (reinforcement 10.12, etc., circle).

If you want to know the weight of the pipe, then pay attention to the wall thickness.

To find out the weight of the sheet, you need to select the thickness, and then the calculation of the mass will occur per square meters.

Then data in meters or tons is entered into one of the fields

If you enter values ​​in the field "meters" ("square meters" to find out the weight of the sheet), then you will know the total mass of the entire length (for example, the weight of the reinforcement).

If you are interested in calculating the length by mass, then the data must be entered in the "tons" field.

You can record and print the results obtained

Our calculator allows you to write down the calculated calculations in a special field so that you can easily see your latest calculations. To do this, you need to click on the "Save" button, and the result of your calculations will appear in a special field.

Also, after you have calculated all the necessary data, you can click on the "Print" button and in a convenient form get a printout of the results.

You can compare prices for selected items from all suppliers.

To do this, you need to write down your calculations. Please note that the field with the recorded results contains items that are of interest to you. Next, click "Calculate the entire application online", and the system will take you to a page where the results of processing supplier prices will be shown.

When knitting frames, meshes, as well as when erecting a foundation, the main element is reinforcement. As for private construction, here one of the most demanded is rolled metal with a diameter of 12 millimeters. The favorable ratio of strength and affordable price allows the use of 12 mm reinforcement in the construction of a private house.

Why do you need to know the weight of rolled metal? You will need this value to estimate the cost of construction work at different stages. Usually, the weight has already been calculated in the project for each structure where A12, A3 or any other brand is used. If you plan to make the calculation of the building yourself, or you just want to understand this moment in detail, then this material will answer all your questions. After studying the article, the reader will be able to independently calculate and find out the weight of the reinforcement 12 mm, A3 or another brand.

The calculation is performed in running meters - special values ​​usually used in construction work. The table also shows the mass of one running meter. At the same time, fittings are sold by weight, not by length. The builder's task is quite simple: find out how many meters will be required for all structures, and then convert them into mass units. Below is a detailed and simple table that will help you find out the weight of one running meter.

In this table, you need to find the required diameter (D), in this case it is 12 mm. In the second column, D is indicated - these data are not particularly needed, and it is quite simple to translate 12 mm (you need to divide 12 mm by 100, as a result, you get 0.12 m). The third column of the table is the most important - here the mass m per kg is indicated. A meter of rolled metal 12 millimeters is 0.888 kilograms. Also, for example, you can take 10 mm rods, the weight of which is 0.617 kg. The last column shows how many meters are in one ton.

Calculator

Self-calculation

Now the reader knows how much one meter weighs. But in order to better understand the work, you need to understand how the calculation is carried out. Having understood the essence, the builder will be able to calculate the weight of one running meter of rods with a diameter of 12 or 10 mm. To perform the calculation, you must proceed according to the following scheme:

The volume of one running meter can be obtained by the following formula: 1m x (0.785 xD xD). Here the letter "D "indicates the diameter of the circle. The total mass is multiplied with the specific gravity of the rods, in all cases it will be 7850 kg / m3. To find out how much a meter weighs, you need to know the volume.

For example, you can independently calculate the mass of one meter of reinforcement 10 mm. The first step is to get the volume - 1m x (0.785 x 0.010 x 0.010) = 0, 00010124 m3. Weight of rods 10 mm - 00010124 m3 x 7850 = 0.616 kg. If you look at the table, then one meter of reinforcement 10 weighs 0.617 kg. How much a meter of rods 14 or 16 weighs can be found out in the same way.

Number of meters in one ton

Above is the calculation for 10 mm. The number of meters per ton can also be calculated without the use of specialized tables. Here it is worth referring to the building codes, which say that in the strip base there should be at least 0.1% of rods in relation to the reinforced concrete structure. This formulation looks rather complicated. To understand how this works, it's worth taking an example:

1. A strip base is taken, the area of ​​which is 2400 square cm.
2. Next, you need a coefficient, for this formula it is 0, 001.
3. The resulting volume is multiplied by a factor of 2400 x 0.001 = 2.4 cm2.
4. At the next stages, it will not be possible to do without reference information. Here you will need a manual that indicates the required number of rods. For reinforcement with a diameter of 10 and 12 mm, two rods are sufficient.

What you need to know about A12 fittings

The rods are made of steel, the grade of which depends on the requirements for strength, wear and other parameters. Usually builders choose low alloy metal rods. This is not to say that this is the most reliable and durable steel, but at the same time it has an important advantage - low-alloy metal can be processed using arc welding.

Grade A12, like rebar with a diameter of 10 mm, is usually used to give strength to structures made of reinforced concrete. Also, these rods are the main element in the construction of frame structures. In addition to this parameter, you also need to pay attention to the rental, it differs by classes:

• Periodic profile - A3. The armature of class A3 has a transverse corrugation.
• Smooth profile - A1. Unlike A3, the A1 class fittings come without corrugation.

It is possible to purchase fittings, regardless of the diameter or class A3, in coils or rods.

Reinforcement is called metal rods, rods or ropes of various shapes and sections, intended for construction work in order to fasten specialized structures. The armature is indispensable in the manufacture of any type of reinforced concrete devices in order to enhance its strength. According to its characteristics, it is subdivided into strength classes and can be of various diameters, which affects the effectiveness of its use in reinforced concrete building structures. This article will help answer the questions "How many meters are there in a ton of reinforcement?" and "How much does a meter of reinforcement weigh?"

In terms of labor costs in production, the presented rolled metal products can be:

• lightweight (with a diameter of up to 12 mm);
• heavy (with a diameter of 12 - 40 mm).

With a steel bar diameter of 12 mm, it is customary to call it reinforcement 12 ( A12) is the most popular rolled metal product in household construction.

In the process of manufacturing A12, GOST 5781–82 is strictly observed, and according to its purpose it is classified into tense and non-tense... According to the choice of production technology, the following types of fittings are distinguished 12:

• cold drawn;
• hot rolled.

Cold drawn reinforcement A12 is necessary for the manufacture of reinforced mesh, supplied in coils (bundles) of 6-12 meters and is a reinforcing wire.

Hot rolled A12, being a high-quality type of rolled metal, is made from steel with a rounded cross-section, finds its application in the reinforcement of stressed and conventional structures, gives sufficient strength to reinforced concrete structures and prevents damage during mechanical deformations.

Distinctive features of A12 fittings

These rolled metal products can be made from steel of different grades, which depends on its application and the requirements for its characteristics. Low-alloy structural steel products are most often required. This is due to the fact that such products are easily arc welded.

The main purpose of the A12 is strengthening of reinforced concrete structures, as well as the formation of frame devices to resist the increased load. A diameter of 12 mm is the minimum for the construction of a strip foundation and its grillages, if the reinforcement frame is knitted from four rods. Rental by class is:

• smooth profile (without corrugation) - class A1;
• periodic profile (with transverse corrugation at an angle to the axis of the rod) - class A3.

This construction metal rolling is presented from the manufacturer in rods or bays... The scope of its application is very wide. For the arrangement of the foundation, it is recommended to use hot-rolled rebars in the form of rods with oblique corrugation, the presence of which ensures optimal adhesion to concrete. This interaction of materials ensures the strength and durability of the reinforced concrete building structure. The transverse arrangement of reinforced rods in the foundation prevents cracking of concrete and reduces the force load on the resulting structure, as well as protects it from deformation.

Dignity fittings A12 that are manifested in construction:

• high degree of strength;
• relatively high plasticity;
• minimal susceptibility to corrosion;
• high resistance to thermal, chemical and mechanical stress;
• the ability to create various configurations of structures by welding and by mechanical connections;
• the possibility of using in stressed structures made of reinforced concrete.

There is a fairly large selection of grade steel on the market for construction raw materials. Recently, there has been a gradual transition, on the example of Europe, to products from steel А500С instead of the previously popular A400. This fact, quite logically, is explained by the fact that with full preservation of the quality characteristics of rolled products, its production cost is reduced, due to the saving of raw materials in the process of construction operations, up to 10%. For construction costing, this amount of costs is simply colossal.

A feature of the production of rolled products from this steel grade is the absence of oxidation and, as a result, the absence of rust. At the same time, mechanical, chemical and thermal properties remain at a very high level. The displacement of A400 steel grade by A500C grade in rolled products allows to reduce its concentration during concreting and, as a result, the consumption of A12 reinforcement. The technical characteristics of the steel used do not allow the welds of the finished structure to collapse. All this leads to an increase in the strength of floors, columns and walls of buildings.

Linear weight of reinforcement 12

For construction work, it is customary to calculate the amount of reinforcement in running meters, but it is sold mainly by weight. It turns out that in order to buy the required amount of rolled metal and know exactly its cost, it is necessary to convert the calculated demand in meters into weight units, that is, kilograms, tons, etc. To do this, you can use presented table... An alternative to the presented tabular data is an independent calculation of the data, starting from the size of the diameter.

The mass of one meter of reinforced steel is shown in the table as diameter to weight ratio... Having information about the mass of reinforcing steel, it is possible to determine the coefficient of reinforcement of the structure (the ratio of the weight of rolled metal to the volume of concrete).

In order to calculate the need for reinforcement, you will need data on how many running meters one ton of rolled metal contains. The number of meters per ton is a value that depends on several factors. It is clearly seen from the presented table that the footage largely depends on the class of reinforcement.

How many meters are there in a ton of reinforcement 12?

In accordance with building regulations, the amount of reinforcement in the strip foundation as a percentage of the reinforced concrete element in the section must be at least 0.1%. In an example, it looks like this. If sectional area of ​​the strip foundation is 100 * 240 = 2400 square cm, then the estimated number of rolling bars for longitudinal reinforcement is found by multiplying the resulting volume of the foundation by 0.001, that is, 2400 * 0.001 = 2.4 square cm.

Next, you should resort to the reference data of the table from the manual for reinforcing reinforced concrete elements of monolithic buildings. Since we are interested in reinforcement with a diameter of 12, it is obvious that only 2 reinforced rods are needed for the calculated volume of the foundation. The calculation of the consumption of reinforced steel for a slab foundation is similar.

The answer to the question of how many meters of reinforcement is in 1 ton is of interest to both designers and builders. This information is needed to determine the mass and cost of the structure, as well as for the correct organization of work during the purchase and delivery to the construction site. This problem arises due to the fact that the results of strength calculations of bars are presented in meters, and to buy them, data in tons is required.

Varieties

For foundations, reinforced concrete structures, gas-block houses, steel of a round and periodic profile is used. The latter has the form of cylindrical rods with transverse protrusions formed along a helical line and two longitudinal ribs. There is an option in which right and left approaches are made on opposite sides of the rods to improve adhesion to concrete (used for high strength steels).

The main value by which the number of reinforcement is determined is its nominal diameter (d), regardless of whether the surface is smooth or with various types of corrugation. According to the standards, the cross-sectional areas of a periodic profile (non-circular) and those having the shape of a circle of the same diameter are identical. Consequently, their masses per 1 meter are also equal.

According to GOST 5781-82, hot-rolled - A1000 is produced (the letter A denotes the production method, and the number denotes the yield strength in MPa):

Thermomechanically hardened rods are manufactured according to standard 10884-94:

Calculation technology

There are several known methods for determining the number of running meters of rods in a ton (L):

• Using the formula for calculating body weight from a known volume and density (ρ): L = (4 ∙ 1000) / (ρ ∙ π ∙ d 2) (1), where: ρ = 7850 kg / m 3 - density of rolled steel for theoretical calculations , d - is taken in meters, 1 ton = 1000 kg.

• Using data from the relevant manufacturing standards.

It is quite easy to find out the number of running meters in one ton: L = 1000 / q, where q is the mass of 1 meter (kg / m).

Below is the number of meters of reinforcement in a ton according to this method and expression (1).

According to the P52544-2006 standard, it is possible to produce numbers of profiles of reinforcing rods, the specific gravity of which is not indicated in the regulatory document (4.5; 5.5; 6.5; 7; 7.5; 8.5; 9; 9.5; 45 ; 50 mm). As can be seen from the comparison of the calculations by formula (1) and the data obtained on the basis of the specific gravity, the results differ somewhat (the discrepancies are 0.36-1.0%). To buy the required number of rods, in relation to the dimensions not included in the standard, the estimate according to the formula (1) is quite acceptable, especially taking into account the tolerances for the manufacture of a ton of rolled products.

In addition to the theoretical ones, there is an empirical method for determining the number of meters of reinforcing products in a ton by directly weighing them. This method is the most reliable, and its accuracy depends on the error of the scales used, for example, overhead crane scales.