How many meters of reinforcement in a ton

The construction of concrete structures is rarely complete without a reinforcement cage. It is designed to improve tensile and compressive strength, which is relatively low in concrete. The builder often has to deal with lightweight reinforcement - rods, nets, wire. Its weight depends on the size and diameter of the product.

Description and scope of application of fittings

Reinforcement itself is a set of elements that were used in the construction of a structure. Distinguish the following popular types.

• Rods - metal rods, smooth or corrugated. They are used individually, but more often as part of a frame. The rods can be bent, welded, reinforced at different angles, laid and connected to each other with wire. This is the simplest and most convenient method of strengthening walls or foundations, since a frame of any type and level of complexity can be assembled from the rods. However, this is true only for a relatively small scale of work.
• Grids - heavy and light. They are made from rods with different diameters by welding. The rods in the grid are placed strictly perpendicular to each other. The size and shape of the cells may vary. Meshes are more convenient in cases where it is required to reinforce a large area - when pouring a concrete floor, for example, or with a large structure. Space frames are also constructed from grids, which are denser and more resistant to various types of loads.
• Piece elements - channels, corners, I-beams. Beams are used to reinforce a single element, such as a window or doorway.

Often a common building frame, especially with complex architectural elements includes all types of fittings... In this case, grids are taken to strengthen large structures, and rods are taken to strengthen simple elements.

Reinforcement products include light meshes and rods with a diameter of 3-10 mm - wire rod. This product is offered in coils and is used to strengthen and connect lightweight structural parts. More often it serves as a blank for the production of lightweight mesh.

Technical and physical characteristics

The choice of reinforcement products depends on physical and technical characteristics. The former are due to the material of manufacture and technology. The entire range of rebar is divided into hot-rolled bar steel and cold rolled wire.

Equally important technical specifications: weight of reinforcement, dimensions, including bar diameter, weight. The latter factor is important for calculating the total mass of the structure and the parameters of support.

Footage

To calculate the volume of material for the frame, such a value is used as running meter... It is used to describe rods, wire and reinforcement, as well as light mesh, which is sold in rolls. Reinforcing flat mesh - in maps, calculated in square meters.

The weight of the reinforcement in 1 meter will be different. This depends on the diameter of the bar and the size of the mesh when it comes to the mesh.

Diameter

An important defining parameter is diameter of the bar. The technical characteristics of the product and the form of release depend on this value. Bars with a diameter of 3 to 10 mm are classified as light. They are usually only used as a blank for lightweight mesh.

Rods with a diameter of 10 to 80 mm are heavy. They are used either individually or in the form of a map - a flat bar grid.

Weight

The mass of the reinforcing structure must be taken into account when calculating the total load on the foundation... And since it is impossible to weigh the products, it is necessary to calculate this value. For convenience, it is easier to use the weight of 1 running meter of the product - both the mesh and the rod.

To calculate the weight of the reinforcement, use tables, where the weight of 1 m and the number of running meters in a ton are indicated. The latter indicator is useful when calculating the cost of an order.

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If the table is not at hand, the calculations are performed independently. To do this, multiply the length of the bar and its diameter to obtain the volume, and the resulting value is multiplied by the specific gravity of the reinforcement. Then you can find the number of running meters per ton.

How to calculate the amount of reinforcement for an object

Do-it-yourself calculations are not so difficult if the building object is small, for example, the slab foundation of a house is 8 * 8 m. The algorithm is as follows.

1. Learn from the reference bookthat such a building requires a slab foundation 30 cm deep and reinforcing rods with a diameter of 14 mm.
2. The width of the base is divided into conditional cells 20 cm each, that is, 8 / 0.2 and get a number of 40 rods. The number of cross members is calculated in the same way. Since the second side, according to the condition, is also left 8 m, the number of reinforcing rods is the same - 40. The total number of rods is 80.
3. Laying in concrete 30 cm thick is required 2 nets or 2 belts - top and bottom. Accordingly, the value must be doubled - 160 rods.
4. The fittings are not offered in pieces, but in tons or in running meters... Therefore, the total length of the reinforcement is found according to the simplest formula: 160 * 8 = 1280 m.However, it should be taken into account that U-shaped clamps will need to be installed at the ends and in the sections and connected the upper and lower belt with additional rods. Therefore, the obtained value is increased by 2–3%. Get 1305.6 meters.

If necessary, the indicator is converted to tons. The weight of 1 running meter of a rod with a diameter of 14 mm is 1.21 kg. When multiplied, the weight is obtained - 1.58 tons.