Crossbars base r, are. Foundation crossbars Р1, АР5, АР6, АР7 and loading beams PB Reinforced concrete crossbar ap 6

Rigel AR 6 - these are supporting elements that are designed to increase the bearing capacity of reinforced concrete foundations installed in various soils and centrifuged buildings that experience enormous vertical loads. Structurally, the crossbar is a trapezoid-shaped plate, which has technological bevels and mounting loops for lifting a massive product to a height.

1. Marking options

current standardSeries 3.407-115 Allows marking with the following options:

1. AR 6;

2. AR-6;

3. AP.6.

2. Main scope of operation

Foundation crossbars AR 6 most often used in building and assembly structures. They can be used in one formwork for fixing thrust bearings of one-dimensional thrust bearings, as well as for conical (with element diameters of 560/334 and 650/410 mm) and cylindrical (with a diameter of 560 mm) centrifuged racks and supports type VL 35-750 kW. The main purpose of the slab is to increase the bearing capacity of foundations. Anchor support crossbars are best used to strengthen the structure of overhead power line supports, as this gives an excellent chance to strengthen the base, which will better absorb horizontal or overturning loads (for leveling), including dynamic impacts. Supports are attached to each other with clamps.

3. Marking designation

Reinforced concrete crossbars must be marked. The encryption contains basic data about the type of product and its size group, as well as a number that characterizes the length of the plate.AR 6 - this is a crossbar of anchor supports of the 6th standard size. The sizing information is as follows:

Length = 3500 ;

Width = 500 ;

Height = 200 ;

Weight = 760 ;

Volume of concrete = 0,28 ;

Geometric volume =0,35 .

Designation signs are written on the end side of the slab, for this black indelible paint is used (it should not be erased throughout the entire life of the crossbar). Additional data is used for the main marking (they can also be indicated in the technical passport) - the manufacturer's trademark, the date of release of the concrete goods batch and the mass of a particular product. Proper formation of the cipher allows you to quickly classify crossbars by type and brand.

4. Manufacture and main materials

Production of products is carried out by vibropressing. Due to their special geometric shape, they can be molded in unified formwork. The technology for the production of support elements is standardized, so it is possible to obtainreinforced concrete crossbars AR 6 different sizes with equally high performance (this applies to the entire batch of concrete products). Finished products undergo quality control for compliance with reference indicators in a specialized laboratory. If the norms are met, then the finished reinforced concrete crossbars are shipped to the warehouse and to the consumer.

Rigid concrete mixtures are used in accordance with the performance characteristics and specific operating conditions, in particular taking into account the type of soil and temperature data. The moisture resistance of concrete is taken to be very high, otherwise aggressive substances can destroy the concrete surface, the product will become unusable. This is because water particles accelerate the process of natural wear. The concretes used must have sufficiently high performance:

Strength B30 (M400);

Frost resistance grade F150-200;

Waterproof grade W4-8;

crack resistance;

wear resistance;

Durability.

Strength indicators are achieved by reinforcing frame structures that follow the contour of the crossbar. They are welded from hot-rolled tool steel of class A-100 and A-300. They make flat nets S-95 and S-96 (1 pc.), S-99 (2 pcs.). Additionally, rigging pegs 18 (2 pcs.) are laid in the body of the plate for the convenience of lifting the elements to a height. The diameters of the applied embedded parts are 6, 16 and 12 mm. Steel units are coated with anti-corrosion compounds and concreted based on the creation of a protective layer of the mixture with a thickness of at least 20 mm.

Reinforced concrete crossbar is a product widely used in construction, including in the energy industry. The tasks assigned to crossbars: increase the service life of various reinforced concrete foundations and racks of power lines. One of the most popular brands of these concrete products are ar crossbars. For example, the AR 5 crossbar is perfect for mounting power transmission poles. Made of heavy concrete, this type of product can significantly increase the allowable load on the supports. We offer to buy the highest quality crossbar, the manufactured types of which you can see in the table below.

Manufacturing technology of reinforced concrete crossbars

The reinforced concrete crossbar is made of concrete of classes B 22.5-B 40, reinforced with reinforcing steel in accordance with GOST 18980-90. Concrete must meet a number of stringent requirements, such as frost resistance and water repellency.

Also, steel frame structures are used in the production, which can significantly increase the strength of the product. When reinforcing, high-class reinforcing steel is used: thermo-mechanically hardened rod and hot-rolled or periodic profile wire.

Standard sizes of crossbars depending on the places of fastening

1) for footrests for anchor-angled metal supports - P1, RF;
2) for cylindrical and conical racks with a diameter of 560/334 mm and 650/410 mm - Р1А, АР5;
3) for centrifuged reinforced concrete racks - АР6, АР6-1, RC;
4) for vibrated racks - АР, АР7-1;
5) for eight-centimeter racks - АР8.

Sizes Р, АР (anchor) have the ability to increase the load tolerance of both foundations and power transmission line racks. Their length is from 1.5 to 6 m, and their weight is up to three tons.