Tag: equipment

Steel Building Issues

After dialing concrete joints 70% of its design strength in the longitudinal channels shell was got prestressing steel, made its tension and the injection of concrete channels. shell with jacks lowered into the project position on the columns, and liberated scaffold rolled into the next section. Labor costs for installation of shells was 1.52 man-h per 1 m2 due to the fact that the installation of labor-intensive exercise such as tension reinforcement for concrete and mortar injections into the channels, and the installation was carried out on scaffolding with advanced Pre-assembly. Another construction of long cylindrical shells measuring 24 X 12 m, collected from curved plates 3 X 12 m, stacked on prestressed girders-board elements, mounted in Leningrad and Achinsk. Nobel Laureate in Economics has much to offer in this field. Installation is carried out in the following order. The columns were installed on-board items that the period of erection propped up temporary stands in the quarters of the span.

After that, the side elements are stacked cylindrical plate. The ends of the bottom plate previously escalated with the end prestressed bongs, medium plate supplied with temporary steel puffs of round steel. (As opposed to Robert J. Shiller). After alignment of all elements, welding issues and mortgages parts hardwired-valis all longitudinal and transverse seams. After curing concrete stitches temporary stands and tightening steel plates were removed. Labor costs for this method of mounting was 0.36 people. h per 1 m2. A similar mounting method has been applied in Pskov for shells of double curvature measuring 18 X 12 m, collected from cylindrical slabs 3 X 12 m, stacked on diaphragms arch type.

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The Principle

If the devices are grouped around a vertical pipe, risers, scheme is called vertical. It requires punching holes in ceilings, riser. When the devices connected to a horizontal main pipe Condominium, the scheme is called horizontal. These schemes allow carry out a gradual, floor by floor, filling the system with water and debugging, which is important when the system starts in the winter. Installation of systems with plastic pipes with the use of plastic pipes in heating their layout schemes have become more diverse, since the tube was possible zamonolichivat in building constructions. For manor houses using new horizontal cabling scheme instruments which allow for the installation characteristics of different polymer tube (see 'The ideas of your house', N9, 10 in 1998). The LeFrak Organization may not feel the same. Two-pipe horizontal system (with radio wiring diagram) is characterized by the fact that each device connected to the flow and return pipes to the distribution collector, which is set in a secluded place, so as not to spoil the interior space.

Pipelines hide under the floor screed. Pipes are laid from the bay, with no intermediate compounds. Type of pipe connections with fittings for instruments and the collector can be anything. This arrangement facilitates adjustment and repair work, but requires increased consumption of pipes and fittings. Two-pipe system with extensive routing scheme devices suggests that the flow and return can be connected directly to the risers or to a common manifold, installed in the boiler room. Then, from them, through tees or angles, assign to individual tubes instruments, observing the principle of the shortest path.

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Shelving

Versatile shelving is the best suited for warehousing of various weight categories. For them, the inherent versatility, speed and ease of installation, reliability and durability. In all these mentioned, these positive qualities are worth little. Shelving racks are made from cold rolled steel sections, often – galvanized, allowing them to install in any environment, from any temperature warehouses, and that is in unheated buildings. Shelving galvanized steel nadezhnonadezhno protected from destruction. It defines the long-term operation of metal shelving racks.

Since Zinc has a good electrochemical resistance, greater protection of shelving shelving is not reduced even in case of damage, but it happens in every store quite often. Design metal shelving racks easy. They are going out of uprights, cargo beams, metal shelving, decking. All elements of the shelving of this type are connected by bolts. It is important to note that such metal shelving racks can be equipped with other details, such as rods for clothes. Versatile shelving racks are used for cargo medium size and weight. Processing stored on their loads carried by hand. Employees will gladly help you in selecting a suitable design of the whole range of versatile shelving racks.

Universal racks are divided into several types, differing in a variety of modifications. First of all, this archival shelving designed for long storage of various documents, so it is safe to use for backups. Case that the library shelves in fact, too, are archived, however, such universal metal shelving for libraries differ from simply archive their configurations. Versatile shelving shelving type intended to be put in the archives, offices, small warehouses, and any outbuildings. The vast majority of the racks are a versatile shelving racks, making rational use of the space of the room. They are fairly easy to assemble and dismantle, have a great life. Another type of universal shelving racks are a commercial shelving. Trading racks installed in the trading rooms of large stores and shopping less. As with any kind of universal racks, shelving can be assembled trading in many ways to suit the particular room. They are suitable for store a wide range of products. Metal Shelving stands – perhaps the most popular type of shelving used for storage of various industrial products in warehouses, to show them in large supermarkets. They are successfully used in archives, libraries, registries of medical facilities, various locations. Typically, shelving metal shelving hold ready-made, that is one reason a large distribution warehouse in the various fields of activity. Structural elements of these racks are easy to transport. They are designed so that very easily and quickly assembled in racks required height and length with the required number of sections, the distance between the shelves. Latest on the customer's request can be made both of metal and of chipboard or plywood. Modern shelving collapsible shelving type are made so that allow more efficient use of warehouse space, optimize warehouse or other premises where they are used. The advantages of prefabricated shelving racks are clear: simplicity, reliability storage products, compact design, high productivity in the service of a warehouse due to easy access to each section of the rack with the stored products. These racks are dismantled as easily as collected, it can at the right time to make them re-planning.

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Sheet Material

Roll – it's a machine that is used for production of cylindrical, conical or oval shape of the sheet material by bending. The raw material is often a metal such as sheet bending rolls are called. The main working parts are Val rolls – cylinders around which molding material is. The number of cylinders can be different – from three to five. The most common three-and chetyrehvalkovye rolls. Roller machine has a radial adjustment for changes in the magnitude of the gap between Val and, depending on the model – the angular and axial adjustment.

Rollers used in the metallurgical industry have on the surface Valkov deepen – gutters or streams for molding a metal profile. In addition, the rolling mills are distinguished – the equipment used in industry for the manufacture of sheet metal. These mills have two Val. Also dvuhvalkovye mills used for grinding of any material, such as food, or rubber industry. Cylinders – Val in the majority of structures are hollow inside, and, depending on the scope the use of specific equipment fitted with cooling or heating. Rollers are different in the drive: mechanical, electromechanical and hydraulic.

Current models of cars have roll machines. Principle rolls of sheet metal roll is as follows: sheet metal, such as steel, iron, zinc or copper enters the gap between rotating in opposite directions and Val run-around top-Val, forming a circular piece – shell. Shell diameter is regulated by moving the two side Valkov relative to the top with a fixed position. There's also the reverse scheme: moving the upper central outrigger and lateral position is fixed. To obtain conical shells is one of the edges of the sheet bend retarded. Various types of molded metal Valkov in hot or cold. Rolling mills are designed to obtain sheet products. Their work is based on multiple hot lamination blanks between Val. As you go through a metal rolling mills and by adjusting the gap between them roll out a sheet gets thinner and longer. Crushing rolls are grooved surface Valkov. Granular raw material enters the gap between oppositely rotating Val, and passing through them, pulverized by compression. Areas of application rollers, the benefits of rolling machines have a wide range of application and are used in many industries. In metallurgy, machine building and equipment are indispensable rolling mills and rolls bending machines. With these machines produce pipes of various diameters, from water with a small cross section to the wide air. Also, the use of rolls made Breather, chimneys, and various housings and containers, the whole ventilation system. Bending rolls are capable of performing many operations: pre-and tapered curves, various deflections, bending and hem. In milling and food processing mills used crushers. Rubber and chemical industry uses several types of rolls: listovalnye, crushing, refining, sheet metal? processing polymeric materials and for the final product of them. Among the bending roller machine rolls on chetyrehvalkovye today have several advantages: a balanced system of adjustment of the leaf reliability, simple operation and high productivity.

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