Structural and space-planning solutions

The level of responsibility of the buildings of the residential complex is normal. The building of a residential house in building 3.1 consists of 4 blocks separated by expansion-sedimentary joints. Structural scheme of the body 3.1 - cross-wall. The basement and 1st floor structures are made of monolithic reinforced concrete. From the 2nd floor, the building is designed from prefabricated reinforced concrete products manufactured by OJSC "Reinforced Concrete Products Plant No. 1" settlement. Troops. Basement walls - monolithic reinforced concrete, 180 mm thick, made of concrete B30, W6, F100. The outer walls of the basement with insulation, waterproofing and a protective wall made of concrete, in the basement - with cladding. The load-bearing walls of the first floor are monolithic reinforced concrete, 180 mm thick, made of concrete B25, F100. The non-bearing outer walls of the first floor are three-layer reinforced concrete panels 350 mm thick and, at the level of the first floor from the side of the main facade, brick 250 mm thick from hollow brick M125 on mortar M75 with external insulation and facing with concrete stone. Internal load-bearing walls from the second floor - prefabricated reinforced concrete panels 180 mm thick made of B22,5 concrete (up to el. 21.0) and B15 (above el. 21.0). External walls from the second floor - three-layer reinforced concrete panels: non-bearing - 350 mm thick; end load-bearing walls - 440 mm thick, made of concrete B20, F100, with an average layer of foam polystyrene insulation 200 mm thick. Panel joints are closed, sealed with mastic over sealing gaskets. Wall panels are fastened to the supporting structures of the building using steel ties. Ceilings above the basement and above the first floor - monolithic reinforced concrete slabs, 180 mm thick, made of B25 concrete. Ceilings of the overlying floors - prefabricated reinforced concrete flat slabs 160 mm thick made of B15 concrete. Slabs of loggias and balconies - prefabricated reinforced concrete, 160 mm thick, made of concrete B22,5, F150, are based on cantilever outlets of internal load-bearing wall panels. Interfacing of load-bearing panels and floor slabs is a platform joint with the transfer of forces to the underlying floor through the floor slab. Fastening of all prefabricated structures to each other - by welding. Elements of stairs, elevator shafts, ventilation blocks - from prefabricated reinforced concrete. The spatial rigidity and stability of the hulls is ensured by the joint work of the transverse and longitudinal walls in combination with the floor disks. The static calculation of the supporting structures of the building was performed using the SCAD 11.3 software package, taking into account the joint work of the above-ground structures of the foundations and foundations in accordance with SP 52-103-2007 and STO 36554501-006-2006. The horizontal displacement of the top of the building is 38.5 mm, the acceleration of the vibrations of the building structures arising from the pulsation of the high-speed wind pressure is 0,068 m/s2, which does not exceed the maximum allowable values. The maximum draft of building blocks is 5.8 cm, roll is 0.00044. Calculations confirmed the stability of building blocks against progressive collapse in the event of local destruction. The foundations are taken on a pile basis. Piles - driven, composite, prefabricated reinforced concrete, section 40x40cm, length 17m (block 1) and 18.0m (blocks 2 - 4) with absolute marks of the pile tip minus 15.45m and minus 16.45m, made of concrete B35, W8, F150. The connection between piles and grillage is rigid. The design load on the pile is 140 tf. Grillage - tape height 750mm and, in the area of ​​​​adjacency to the building 3.5, partially, slab of monolithic reinforced concrete 750mm thick, concrete class B30, W8, F150, reinforcement class A500C. A 100mm thick concrete preparation is provided under the foundation. A relative elevation of 0.00 corresponds to an absolute elevation of 5,15m. The base of the piles is light silty hard clay with thin interlayers of sandstone EGE 8 (IL=-0.26, E=210kg/cm2). The allowable design load on the pile is 140 tf, based on the results of static sounding. Before mass piling, the bearing capacity of the piles will be checked by static tests. The project provides for control tests of piles. Building 3.1 adjoins building 3.5, which was designed and is being built at the same time. The building of the residential house of building 3.5, consisting of 3 blocks, is divided by deformation-sedimentary seams into five parts. The outer blocks of building 3.5 are designed according to the cross-wall structural scheme, the middle block - according to the column-wall structural scheme. The spatial rigidity of the building is ensured by the joint work of transverse and longitudinal walls, walls and columns in combination with unchanging horizontal disks of reinforced concrete floors and roofing. Bearing walls and piers - monolithic reinforced concrete, 180mm and 250mm thick. Columns - monolithic reinforced concrete, section 40x40cm. The outer walls of the basement - monolithic reinforced concrete with a thickness of 250mm and 180mm, insulation, waterproofing and a protective wall made of concrete, in the basement part of the wall - with cladding. Concrete of monolithic walls of the basement floor - B40, W8, F150, reinforcement class A500C. Concrete of monolithic walls of the above-ground part B30, F75 reinforcement class A500C. Ceilings and roofing - monolithic reinforced concrete, 160mm thick, in spans above the arches - 200mm thick, made of class B30 concrete, class A500C reinforcement, with a maximum span of 6.4m, with thermal breaks at the locations of balconies and F75 frost resistance mark. External non-bearing walls from the side of the main facade - from hollow bricks of the M125 brand on the M75 mortar, with floor-by-floor support on floor slabs, 250 mm thick, a layer of insulation and cladding with a ventilated facade. Structural solutions for fastening the ventilated facade system to the supporting structures of the building are developed in the working documentation in accordance with the current technical certificate of the Ministry of Regional Development of the Russian Federation. External non-bearing walls from the side of the courtyard facade - prefabricated three-layer reinforced concrete panels 350 mm thick and, partially, from hollow bricks of the M125 brand on the M75 mortar, 250 mm thick, with floor-by-floor support on floor slabs, and a layer of insulation, followed by plastering on the grid. Stairs - prefabricated reinforced concrete marches and monolithic reinforced concrete platforms. Elevator shafts - voluminous, from prefabricated reinforced concrete elements.  Ventilation blocks - prefabricated reinforced concrete with floor-by-floor support on ceilings. Building responsibility level – II. The load-bearing structures were calculated by Architectural Workshop M4 LLC using the SCAD 11.3 software package, taking into account the joint work of the above-ground structures of foundations and foundations. The foundations are taken on a pile basis. Piles - driven, prefabricated reinforced concrete, section 35x35cm, length 16m and 17m (absolute mark of the pile tip minus 14.4m, minus 15.4m), made of concrete B30, W8, F150. The connection between piles and grillage is rigid. The design load on the pile is 120 tf. Grillage - slab, from monolithic reinforced concrete 750 mm thick, concrete class B30, W8, F100, class AIII reinforcement. A 100mm thick concrete preparation is provided under the foundation. A relative elevation of 0.00 corresponds to an absolute elevation of 5,15m. The base of the piles is light silty hard clay with fragments and thin interlayers of sandstone EGE 7 (IL=-0.07, E=150kg/cm2). The allowable design load on the pile was adopted based on the results of calculations and the results of static sounding. Before mass piling, the bearing capacity of the piles will be checked by static tests. The project provides for control tests of piles. The expected draft of the building is 15.0 cm, the project provides for a construction lift. The maximum movement of the top of the building is 12.0cm.