Conversion of reinforcement to meters. How much in a ton of reinforcement in linear meters

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

Reinforcement weight, how many meters in 1 ton?

During construction, it is necessary to have an accurate idea of \u200b\u200bhow much weight the entire reinforced structure has as a whole. There are a number of reasons for this:

This makes it possible to withstand the reinforcement technology.
Ensures the necessary reliability of the design.
It is more convenient to calculate the total cost of construction.

The greatest attention is paid to the rod with a diameter of 12 mm, because this is the minimum diameter value that is allowed to be used when creating structures for a strip foundation. And of course, one should 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 diameter sizes of periodic steel - 6, 8.10, 12, 14, 16, 18.20, 22, 25, 28, 32, 36, 40, 45, 50, 55, 60, 70, 80mm).

Rebar size (nominal bar diameter)	Weight of 1 m of reinforcement, theoretical, kg	Number of meters of reinforcement in 1 ton, m
4	0,099	10101,010
5	0,154	6493,506
6	0,222	4504,504
8	0,395	2531,645
10	0,617	1620,745
12	0,888	1126,126
14	1,210	826,446
16	1,580	632,911
18	2,000	500,000
20	2,470	404,858
22	2,980	335,570
25	3,850	259,740
28	4,830	207,037
32	6,310	158,478
36	7,990	125,156
40	9,870	101,317
45	12,480	80,128
50	15,410	64,892
55	18,650	53,619
60	22,190	45,065
70	30,210	33,101
80	39,460	25,342

According to this table, 1126 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 rod directly, if you, for example, need to know what is the mass of all the reinforcement used in the construction of a building. To do this, you only 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 symbol “C” 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, 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 10 meters long will need much less than rods with the same diameter, but 2 meters long.

Reinforced concrete today is the most common material used in the construction of multi-storey buildings, roads, tunnels, bridges and any other objects. Reinforcement is an important component of such structures - non-reinforced concrete, although it can withstand significant compressive loads, practically does not work in bending and tension, collapsing at relatively low loads. But the use of metal rods - conventional or prestressed - eliminates this drawback. Often, builders find themselves in situations where they need to know the weight of the reinforcement in order to calculate the required amount of material for construction. The reinforcement weight table will help them with this. You will find it below in the article, in the reinforcement table, the value of the mass of metal rods of all diameters is presented.

Of course, first of all, the mass of the rod depends on the thickness. The larger the diameter, the greater the weight. Today, in construction, metal rods with a diameter of 6 to 80 millimeters are most often used. The mass of 1 m of reinforcement, the thinnest, weighs only 222 grams, while for the thickest this figure is 39.46 kilograms. As you can see, the difference is huge. Therefore, knowing the weight of the reinforcement will also not be superfluous when calculating the pressure of the structure on the base - a few unaccounted for tons of load can have a detrimental effect on the reliability and durability of any building.

How much does rebar weigh

In order to find out the reinforcement weight, it is easiest and most convenient to use the special table below.

Rebar weight table

Diameter, mm	Weight of 1 meter of reinforcement, kg	Linear meters per ton
6	0,222	4504,5
8	0,395	2531,65
10	0,617	1620,75
12	0,888	1126,13
14	1,21	826,45
16	1,58	632,91
18	2	500
20	2,47	404,86
22	2,98	335,57
25	3,85	259,74
28	4,83	207,04
32	6,31	158,48
36	7,99	125,16
40	9,87	101,32
45	12,48	80,13
50	15,41	64,89
55	18,65	53,62
60	22,19	45,07
70	30,21	33,1
80	39,46	25,34

All data indicated in this table fully comply with the current GOST. The error can be a maximum of a few percent - such errors will not cause significant trouble and will definitely not cause damage to the structure.

With a table at hand, you can quickly calculate the weight of a rebar, for example, with a diameter of 32 mm. Find the corresponding diameter in the first column and you will immediately find out that its mass is 6.32 kg per 1 m, and a ton includes 158.48 meters.

Why do you need to know the weight?

Often, professional builders have a question - what is the weight of a linear meter of reinforcement. Why do they need it? The fact is that when purchasing rods for the construction of large structures, it is not bought individually, as in individual construction, but in tons. But it is difficult to calculate how much a certain mass of material will last if you do not know how much a meter of reinforcement weighs. Knowledge of the total mass and specific gravity of the reinforcement, 1 meter, can be done in seconds in the simplest calculations, having obtained the total length of the metal rods. To do this, we take the entire mass of the necessary rods, and divide by the weight of 1 linear meter.

Calculation example

To reinforce the beams, 2.5 tons of rods of 25 diameters are required. We take from the table the value of the mass of 1 meter, equal to 3.85 kg. Next, we translate tons into kilograms, multiply by 1000, it will be 2500 kg, and divide by 3.85, we get 649 meters of material. The standard length of a metal bar is 11.7 m, to find out the required number of rods, we divide 649 by 11.7, we get 55.5 pcs. Thus, you can count the number of rods with any section. This will help, especially in private construction, to check whether the correct amount of material has been delivered to you.

The reverse situation may also take place. The specialist knows how much material he needs, and also knows the optimal diameter. Having learned the theoretical weight of a meter of reinforcement, it is enough for him to multiply this number by the total length of the required metal rods to determine how much material is needed for construction.

The answer to the question, how many meters of reinforcement 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 proper 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 for bars are presented in meters, and to buy them, data in tons is needed.

Varieties

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

The main value by which the amount of reinforcement is determined is its nominal diameter (d), regardless of whether the surface is smooth or with various types of corrugation. In accordance with 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. Therefore, their masses per 1 meter are also equal.

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

According to the standard 10884-94, thermomechanically hardened rods are made:

Calculation technology

There are several ways to determine the number of running meters of rods per ton (L):

Using the formula for calculating the body mass from a known volume and density (ρ): L = (4∙1000)/(ρ∙π∙d 2) (1), where: ρ = 7850 kg/m 3 is the density of rolled steel for theoretical calculations , d - taken in meters, 1 ton \u003d 1000 kg.

Using data from relevant manufacturing standards.

The number of linear meters in one ton is quite simple to find out: 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).

D, mm	L, m
D, mm	GOST 5781-82; 10884-94	R 52544-2006	By 1)
4	—	10101,010	10137,250
5	—	6493,507	6487,840
6	4504,505	4504,505	4505,444
8	2531,646	2531,646	2534,312
10	1620,746	1623,377	1621,960
12	1126,126	1126,126	1126,361
14	826,446	827,815	827,530
16	632,911	633,714	633,578
18	500,000	500,500	500,604
20	404,858	405,515	405,490
22	335,571	335,120	335,115
25	259,740	259,538	259,513
28	207,039	206,868	206,882
32	158,479	158,403	158,394
36	125,156	125,156	125,151
40	101,317	101,368	101,372
45	80,128	—	80,096
50	64,893	—	64,878
55	53,619	—	53,618
60	45,065	—	45,054
70	33,102	—	33,101
80	25,342	—	25,343

According to the R52544-2006 standard, it is possible to produce reinforcing bar profile numbers, the specific weight of which is not specified 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 calculations using formula (1) and the data obtained on the basis of the specific gravity, the results are somewhat different (the discrepancies are 0.36-1.0%). To buy the required number of rods, in relation to sizes that are not included in the standard, the estimate according to 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, 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 cranes.

Reinforcing steel (rebar) is used to reinforce reinforced concrete structures.
On this page you can calculate the weight of reinforcement, find out what diameters of reinforcing steel are.

Rebar Weight Calculator

ANSWER: the weight of the reinforcement is 0 kg

Calculator how many meters of reinforcement in 1 ton

ANSWER: 0 meters. (0 rods in millimeters)

Reinforcement is manufactured in accordance with GOST 5781-82 “Hot-rolled steel for reinforcing reinforced concrete structures. Specifications ”and GOST R 52544-2006“ Welded rebar of a periodic profile of classes A500C and B500C for reinforcing reinforced concrete structures. Specifications "Depending on the mechanical properties, reinforcing steel is divided into classes A-I (A240), A-II (A300) , A-III (A400); A-IV (A600), A-V (A800), A-VI (A1000).
In the designation A500C and B500C, the letter A means hot-rolled or thermomechanically hardened rebar, the letter B - cold-formed rebar, the letter C - weldable.
The number in the designation indicates the rounded value of the yield strength in N/mm 2 . The yield strength is called the mechanical characteristic of the material, which characterizes the stress at which the deformations continue to grow without increasing the load.

Reinforcement meter weight. The number of meters of rebar in a ton.

Profile number (nominal bar diameter)	Weight of 1 m profile, theoretical, kg	Number of meters of reinforcement in 1 ton, m
4	0,099	10101,010
5	0,154	6493,506
6	0,222	4504,504
8	0,395	2531,645
10	0,617	1620,745
12	0,888	1126,126
14	1,210	826,446
16	1,580	632,911
18	2,000	500,000
20	2,470	404,858
22	2,980	335,570
25	3,850	259,740
28	4,830	207,037
32	6,310	158,478
36	7,990	125,156
40	9,870	101,317
45	12,480	80,128
50	15,410	64,892
55	18,650	53,619
60	22,190	45,065
70	30,210	33,101
80	39,460	25,342

The manufacture of reinforcing steel is regulated by the GOST 5781-82 standard. The document contains technical requirements and conditions, classification, assortment, test methods and other requirements for the product. Below are some reference tables from GOST 5781-82, with which you can find out the theoretical mass of one meter of reinforcement. The weight of the product can also be calculated independently, or using this calculator.

Table: Theoretical weight of 1 linear meter of reinforcement according to GOST 5781-82

Number, Nominal diameter, mm	Diameter d, mm	Cross-sectional area, cm	Weight 1 meter, kg	Number of meters per ton
Armature 6
Armature 8
Armature 10
Armature 12
Armature 14
Armature 16
Armature 18
Armature 20
Armature 22
Armature 25
Armature 28
Armature 32
Armature 36
Armature 40
Armature 45
Armature 50
Armature 55
Armature 60
Armature 70
Armature 80

What is an online calculator for?

We offer a service that contains two in one: rebar weight calculator by weight and by meter. Thus, you can find out the length of the finished product, knowing the weight, or vice versa - find out the weight of a product of a certain length. The online reinforcement calculator is useful in the preparation of design estimates and calculations of metal structures. With it, you can also find out the cost of the finished product by indicating the price per meter or ton.

How to use the calculator?

Select the calculation method (by length or by mass).
Select the rebar diameter from the pop-up list.
Enter the value "Mass" or "Number of meters".
If necessary, indicate the price of one meter or ton.
Click the red "Calculate" button.
In the upper left corner, in the "Calculation results" column, you will see the received data.

How to calculate the weight yourself?

Knowing the nominal diameter and density of the material, you can independently calculate the weight of the reinforcement. It is calculated according to the formula m = D x D x Pi / 4 x ro, according to which the mass of one meter of reinforcement is equal to the theoretical mass of a circle with the same diameter. Values from the formula:

m is the desired mass of reinforcement.
D is the nominal diameter of the reinforcement.
ro is the density of the material.
Pi is Pi number.

The density of carbon steel reinforcement regulated by GOST is 7850.00 kg/m 3 .

How to find out the actual weight of the reinforcement?

Like lookup tables, the rebar calculator calculates the theoretical weight of the product. GOST allows deviations of the geometric dimensions of the product from the nominal. You can find out the actual weight by weighing the reinforcement of a certain length. Accurate information about the mass and other characteristics of the fittings is indicated in the product passport from the manufacturer.