1,2Masters of Namangan Institute of Civil Engineering Abstract. Building structures - any building or artificial structure construction, residential buildings, public, industrial and agricultural buildings the foundation of bridges, bulky buildings, pipes and structures is calculated. Expenditures incurred for the construction of buildings and structures the main part corresponds to the constructions. The main issue is to create a structure that is suitable for the environment in which the building is being built and to check its stability. This is exactly the issue raised in this article.
Key words. Building structures, construction, top coatings.
Introduction. Top coatings is the most responsible part of the building and structure, its variety is diverse. In Central Asia, wooden roofs and mud roofs have historically been used. Nowadays, different types of top coatings are used. Prefabricated elements of the structure consisting of covering slabs are used for building or construction masonry, which rely on lifting structures in the form of beams, trusses or arches placed in steps of 6 or 12 m. There are also spatially thin-walled superstructures in the form of a shell, wavy dome (integral), used to close a large gap. In this case, the construction material was used with great efficiency due to the favorable statistical conditions of operation and the combination of bending and barrier functions.
Main part. Slab contraction joints should intersect at the openings for columns. The most common are P-shaped edges and their dimensions 3x6 and 3x12 m, this type of slabs are 25-30 mm thick transverse edges of the shelf, located in steps of about 1 m (ribs) and two head edges (ribs). Shelf welding reinforced with mesh, transverse ribs with welded carcasses, the longitudinal ribs are pre-stressed wire or wing reinforcement. Two consoles in the form of a doublet, measuring 3x6 and 3x 12 m edged plates are also common. Between them longitudinal ribs bending moment on the shelf due to the possibility of changing the distances decreases and becomes a single value. This is to give up the transverse ribs and reinforce the plate allows you to simplify. Two types of the same size in the plan technical and economic indicators of consumables for the slab approximately the same. Slab contraction joints should intersect at the openings for columns 12 m apart than in the case of slabs with a spacing of 6 m when used as part of the system is more economical, as the specific consumption of materials per 1 m2 of roofing (including the leading structures), as well as labor productivity in installation is much lower.
To cover the roof of the building, large-sized double-sided slabs of 3x IS and 3x24 m, which are placed in the transverse direction on the longitudinal beams along the walls, are also used. The height of the longitudinal ribs of such slabs varies and is located at the edges of the slab (in п-shaped slabs) or at a distance equal to 0.25 of the slab width (in double-slab slabs).
The construction of shells and domes is a great historical creation the potential of that state, the skill of your architect, and your builder showing the level of skill. Such a building in Uzbekistan and structures are common. For example, the circus building, the Republican Trade Exchange, Markets, central exhibition pavilions of the republic, Sports complexes, exhibition pavilions in Tashkent and Samarkand and others can serve as examples.
Prefabricated panel beams. This is a lot in construction in a constructive scheme panels are used to reinforce the crossbar used. Assembly the costum scheme of combining panel beams is as follows consists of: i) panel; 2) rigel; 3) column; 4) wall. The height of the columns in civil buildings is 2.6-6.8 m, production in buildings it is 6.9-12 m. Available in combining constructive schemes of closure you need to choose the one that requires less money from the options. Then don't shut up price, the cost of reinforcement and concrete, labor will fall cheaply. The thickness of hollow panels is 25-35 mm. Panels to normal size have, they are selected from the catalog. The length of the prefabricated panels.