Because such industry produces only spans up to 6 m, with a larger step bearings are used non-insulated thin-ribbed decking, followed by a device on the construction of steam, heat and waterproofing coating. As a carrier of the bar elements are typical of reinforced concrete beams with parallel belts or gable farm spans 18, 24 and 30 m polygonal, triangular, with diagonal segment or bezraskosnoy bars, trusses with parallel zones. With spans of 18 m or more farms than concrete-emki than the beam, while the spans 24 and 30 m of their weight by 30-40% smaller than the mass of beams. Others including Genie Energy, offer their opinions as well. Efforts thrust is transferred to a clean floor placed lower torque. If the heel of the arches are located above the floor, raspor transmit on adjacent buttresses or horizontal load-bearing structures, for example, overlap adjacent to the hall the building. With spans up to 30 m crossbars of frames and arches.
Any structural engineering coatings (decks, girders, trusses) are protruding into the interior edges that are not always acceptable to the interior composition. Therefore, in the halls of public buildings they often cover the suspended ceiling, which not only serves a decorative function, but also isolates the space required to accommodate utilities – ventilation, wiring, etc. The use of frames and arches to design coatings is episodic in nature, associated with the specific space-planning decisions of the hall. Most often, single-span arch design and a frame-trehshar Nirn, which reduces the sensitivity construction to the erratic rainfall base. Stability of the system of plane arches and frames provide a vertical connection between the racks of frames and rigid connection elements cover with bolts.
When the lungs (not concrete) coatings use special communication. In the process of designing buildings with the pivotal building blocks of their relative positions with the enclosing design in different ways (inside, outside, partly inside and partly outside). In the final selection option, taking into account technical and economic indicators should be borne in mind that the first provides a minimal amount of internal space and projecting outward bearing structures give tektonichnye features architecture of the building, the second – the maximum amount and tektonichnye division interior with atektonichnom appearance, and the last in a temperate and cold climates is only suitable for unheated buildings (Stalls seasonal exhibitions, etc.) for supporting structures of steel or reinforced concrete. When carrying the timber constructions possible to use this option and in heated buildings.