Meaning regulatory acts and classifications in industrial production is very large, it is felt particularly acutely at the intersection of construction and metallurgy.
Gauge valve is the most commonly used classification of hot-rolled and cold-drawn steel bars or composite materials, which are presented in a certain state of a variety of metallurgical production plant.Range is usually made according to the current regulatory and technical documentation, which defines the gradation and optimum performance section of the rod.It is designed for rational selection of fittings for the strength characteristics and minimize waste during construction and installation works.This is due to the fact that even ordinary quality carbon steel St3, St5 - an expensive material and cost overruns unacceptable.
origin of the term, and especially its application
term "gauge valves" circulated only in the professional environment of engineers, designers, engineers and other technical workers of the construction sector and industrial manufacturing of structural material.It is maloupotrebimoy into wide use.The origin of the expression of an obligation to borrow the French word assortiment, which in the course of adaptation to the Russian language has acquired specific features inherent only phrases is used in a professional environment.
key features and differences between the assortment
structure of all assortments can be divided into sized and shaped, in the first embodiment identifies the main sizes of one type of reinforcement to detailing its features, while the second version of the classification of rods produced by purpose of their use(welded, termouprochnёnnaya fittings and so on).A classic for the Russian Federation assortment of fittings (GOST 5781-82 its source) combines all of the above signs and displays the appropriate indicators in the most convenient form.This standard covers the principles of the state of compliance of steel reinforcement (wire and rod) demands placed upon it, defined tolerances material loss.Compared with the conventional ideal mix, which would contain a full set of numerical cross-sections of different profile and the length of the rods, to visit displayed only rationally selected sizes.They are not allowed as the excessive load on the structural elements due to excessive cross-sections and their own weight, and significant excess consumption of materials and provide only minimal deadweight loss during the process of construction.At the same time, various industrial enterprises can produce products developed by them for the technical specifications, taking into account its purpose.First of all it concerns the rod and wire products made of composite materials and the corresponding recommendations application.
Data from GOST 5781-82
| Ø | The calculated cross-sectional area of the rod | Weight 1 m linear meters. |
| 4mm | 0,12 cm2 | 0,098 kg |
| 5 mm | 0.2 cm2 | 0,154 kg |
| 6mm | 0,28 cm2 | 0,222 kg |
| 7mm | 0,39 cm2 | 0,302 kg |
| 10mm | 0,79 cm2 | 0,617 kg |
| 12mm | 1,13 cm2 | 0,888 kg |
| 14mm | 1,54 cm2 | 1,208 kg |
| 16 mm | 2,01 cm2 | 1,578 kg |
| 18 mm | 2,55 cm2 | 1,998 kg |
| 20mm | 3.14 cm2 | 2,466 kg |
| 22 mm | 3,80 cm2 | 2,984 kg |
| 25mm | 4,91 cm2 | 3,853 kg |
| 28mm | 6,16cm2 | 4,834 kg |
| 32 mm | 8,04 cm2 | 6,313 kg |
| 36 mm | 10,2 cm2 | 7,990 kg |
| 40mm | 12,6 cm2 | 9,805 kg |
Features of use of reinforcement and mix at high-rise building
Despite the fact that the scope of the steel bars is not too extensive (unlike other steel products) in the construction industry reinforced concrete monolithic structures it is almost irreplaceable.After all, this type of construction of multi-storey and high-rise buildings involves continuous improvement knitted or welded frame and its embedment.He takes all the critical values of the stresses in structures: tension, compression, bend, wind fluctuations, and if necessary - seismic effects, also prevents inappropriate disclosure of cracks in the concrete elements of the building.Equally important element of any building delivered to the site in coils or in bundles with rods (depending on the diameter of the valve), each of which has its own labeling.In place of unloading the material made him welcome, accompanying document for which invoices are the manufacturer or supplier, where the specified gauge fittings.
value products in the field of regulation of industry and construction
factory complex for the production of concrete products, which produce construction with steel fixings using methods of steaming and vibration, sell their products to companies, building under construction of prefabricated concrete elements.Operation manufacturers and contractors working in this area is not possible without adequate nomenclature of steel materials, and the basis for their production and a gauge fittings.In the area of regulation, standardization and unification of such products similar to the technical documentation assumes the role of a unifying factor by which carried out the normal interaction between the non-contiguous areas of production.
