Architectural and space-planning solutions

Residential building (building 1) - single-section, rectangular in plan, with a total dimension in the axes of 31,40 x 18,54 m., has a basement floor, 19 above-ground floors, a technical attic. In the basement floor with a height of 2,72 m, there are premises for the HOA, rooms for placing engineering equipment and laying engineering networks. On the ground floor with a height of 2,80 m there are apartments, an entrance lobby, a pantry for cleaning equipment, a garbage collection chamber, and an electrical panel room. From the second to the nineteenth floors there are apartments. Each apartment has a glazed balcony or loggia. The height of the floors is 2,80 m. The technical attic is intended for laying engineering networks. The roof is flat, with an organized internal drain. At the roof level there are superstructures designed to accommodate the machine room of elevators and a ventilation chamber, a roof gas boiler room. For vertical connection between the floors, a non-smokeable staircase H1 is provided, which has access to the ground level and an elevator unit with two elevators (passenger capacity 400 kg and cargo-passenger capacity 1000 kg, intended for transportation of fire departments). Access to the roof is provided from the staircase. The basement rooms have separate exits directly to the street. Internal partitions - tongue-and-groove blocks 100 mm thick (double - between rooms and bathrooms). Facade finishing: plinth - decorative concrete stone; walls - front brick; glazing of balconies and loggias. Filling of window openings - metal-plastic window and balcony blocks with double-glazed windows, equipped with a micro-ventilation mode. Interior finishing - in accordance with the technological requirements and the functional purpose of the premises. Underground car park (building 2) is a detached, one-story, closed type, heated, for 88 cars, designed to store cars of the residents of the house. The car park includes: a car storage room, a pantry for cleaning equipment, rooms for engineering equipment. The height of the premises is 2,70 m to the bottom of the protruding structures. The roof is flat and exploitable. Entry and exit from the car park is provided by a single-track ramp equipped with automatically opening gates, with a pedestrian ramp area. For evacuation from the parking lot, the following are provided: three stairwells with access to the exploited roof, having a vestibule at the level of the parking lot, equipped with air overpressure; exit along the ramp and stairs in the pit directly to the street. The above-ground part of the outer walls is lined with decorative concrete stone over an additional layer of thermal insulation. The project provides for covering the ramp with a translucent visor. The entrance to the exploited roof is provided by an open staircase and two pedestrian ramps; entrance - on two open ramps with a pedestrian zone. The project provides for measures to ensure the living conditions of the MGN.

Structural and space-planning solutions

The structural scheme of a residential one-section building with a basement and a technical attic is cross-walled. All aboveground and underground supporting structures are made of monolithic reinforced concrete (B25 concrete). Non-bearing external walls - three-layer with floor-by-floor support on floor slabs, with an outer layer of face solid ceramic bricks M175, F50 120 mm thick on a mortar M100, a layer of insulation 100 mm thick and an inner layer of aerated concrete blocks D600, B2,5 200 mm thick. Brickwork - with reinforcement and fastening to aerated concrete with reinforcing anchors made of galvanized steel. Fastening the insulation to aerated concrete - dish-shaped dowels. Fastening masonry made of bricks and aerated concrete to reinforced concrete - with reinforcing anchors made of galvanized steel. In the area of ​​balconies, it is planned to plaster the facade along the insulation layer. Load-bearing external walls - from monolithic reinforced concrete 180 mm thick with insulation (layer thickness 150 mm) and brick cladding similar to non-load-bearing walls. The outer walls of the basement are 400 mm thick with external insulation (foam foam 100 mm thick), above the blind area - 200 mm thick with external insulation (150 mm thick) and finished with melikonpolar concrete stone 60 mm thick. Wall concrete B30 W12F150. Internal walls - 180 mm thick (in the basement - 200 mm thick). Concrete B25, W4, F50 (in the basement - B30, W12, F150, in the 1st and 2nd floors - B30, W4, F50) working reinforcement A500. Transverse internal walls - with a step of 2,7-5,83 m. Balconies - with glazing. Ceilings - continuous slabs 160 mm thick (above the basement 200 mm thick) in the area of ​​the outer walls - with thermal inserts. Concrete B25, W4, F50, working reinforcement A500. The coating is a continuous slab 200 mm thick, designed to absorb the load from the enclosing structures and boiler room equipment. Concrete B30 W4 F50. Elements of stairs - prefabricated reinforced concrete marches, based on monolithic platforms. Elevator shafts - prefabricated reinforced concrete bulk blocks with a wall thickness of 110mm. The lintels are reinforced cement. Ventilation blocks - prefabricated reinforced concrete, with floor-by-floor support on floor slabs. The spatial rigidity and stability of the building is ensured by the joint work of load-bearing walls with hard disks of monolithic ceilings. Structural calculations were performed using the SCAD v.11.1 software package in a finite element model, taking into account the joint work of the building, foundations and base. Checking the stability of the building against progressive destruction in the case of local destruction was not performed. Building responsibility class - II. The structural scheme of the roof boiler room and the ventilation chamber is frame-and-bonded. Frame - steel, single-span. Steel C245, 255. Racks of frames - from closed bent-welded profiles of square section. The maximum pitch of the racks is 3 x 4,84 m. Vertical and horizontal stiffeners - cross, from rolling corners. Cover beams - from rolled I-beams with rigid fastening to the columns. Runs - from paired rolling corners. Covering - profiled flooring H57. External walls - sandwich panels 150mm thick horizontally mounted. The spatial rigidity and stability of the steel frame is ensured by the rigid fastening of the frame racks to the roof of the building, in the transverse direction - by the rigidity of the frames, in the longitudinal direction by the rigidity of the vertical stiffeners and joint work with the hard disks of the roof. The constructive scheme of the underground parking - column - wall. The supporting structures of the car park are made of monolithic reinforced concrete. Columns - with a diameter of 500 mm, with a maximum column spacing of 6,9 x 7,8 m (concrete B30, W4, F100, working reinforcement A500). External walls - 400 mm thick, with foam insulation 50 mm thick to the freezing depth, above the blind area - finished with melikonpolar concrete stone 80 mm thick. Concrete B30, W12, F150, working reinforcement A500. Internal walls - 250 mm thick. The coating is a continuous multi-span slab 450 mm thick (capitals - 700 mm thick with dimensions in terms of 1,8 m x 1,8 m) designed for a load from fire trucks of 3,0 tf / m2 (concrete B30, W6, F150, working reinforcement A500). Elements of stairs - marches and platforms made of monolithic reinforced concrete. The parking lot is designed with the arrangement of external walls at a distance from the walls of the basement of a residential building of the second stage of construction with a cantilever adjoining of the parking slab. For the mark 0,000, the mark of the finished floor is taken, corresponding to the absolute mark + 19,540 m. The foundation was developed on the basis of engineering and geological surveys. The foundation of the residential building is piled. Piles - prefabricated reinforced concrete composite with a section of 35 x 35 cm and a length of 18 (8 + 10) m, immersed by driving from the bottom of the pit. Piles - from concrete B25, W6, F100 and working reinforcement A400. The absolute mark of the bottom of the piles is minus 1,70 m. The connection of the piles with the grillage is rigid. According to the results of control tests of piles, the design load on the pile is 90 tf. The base of the piles is light silty hard dislocated clays (IGE-6) with Е = 200 kg/cm2, φн = 13°, е = 0,59, IL = -0,25. The grillage is a monolithic reinforced concrete slab 800 mm thick made of B25, W12, F150 concrete and A500 working reinforcement. The absolute mark of the bottom of the grillage is + 15,74m. Foundation grillage - plastic sandy loam with Е = 130 kg/cm2, φн = 20°, IL = 0,29. Preparation for the grillage - from a layer of monolithic concrete B7,5 with a thickness of 100 mm. The maximum level of groundwater is at the surface of the earth. Groundwater is slightly aggressive in terms of the content of aggressive carbon dioxide in relation to concrete of normal permeability. Protection of the building from groundwater and dampness of a residential building: drainage, box-shaped basement construction made of W12 concrete, waterproofing of basement walls made of 2 layers of "isoplast", grillage - coated with bitumen. The foundation of the car park is on a natural foundation. The foundation slab of the car park is 600 mm thick. Concrete B30, W12, F150 working reinforcement A500. The absolute mark of the bottom of the foundation slab is + 15,34m. The stress in the base of the foundation is 4,20 tf/m2. The base of the foundation slab is plastic sandy loam (IGE-2a) and semi-solid and refractory loam (IGE-3, 3a) with E = 130-110 kg / cm2, φII = 24-17˚ The pressure on the base will not exceed the domestic pressure from the excavated soil. Preparation for the foundation slab - a multi-layer structure, consisting of a layer of cement mortar 20 mm thick over a tefond layer, over a 7,5 mm thick layer of monolithic concrete B100 and a 200 mm thick ASG layer. Protection against groundwater and dampness of the car park: box-shaped basement construction made of W12 concrete, cold concrete joints with waterstops, roll-up waterproofing of the walls of the car park. The expected estimated average settlement of a residential building is 7,0 cm, roll 0,0001, maximum displacement of the top of the building 4,08 cm, vibration acceleration 0,047 m/s2. Draft parking is not expected. Surveys of adjacent buildings completed. The nearest building is located at a distance of 32 m from the projected building and at a distance of 14 m from the parking lot. The beginning of the entrance ramp to the parking area is designed in the immediate vicinity of the building. The building was built in the 70s of the 20th century adjoining the house of culture, which was dismantled at the time of the survey. The outer walls are made of silicate brick 380 mm thick. Overlapping and covering - from prefabricated reinforced concrete slabs. Foundations - tape, consisting of prefabricated concrete blocks and reinforced concrete slabs. The building during the period of operation received uneven deformation. Walls - with cracks, with deviations from the vertical. To reduce wall deformations, concrete buttresses and steel belts were previously made, but the deformations did not stabilize. The category of the technical condition of the building is recognized - 3 and partially - pre-emergency. To eliminate the negative impact during the construction of the parking lot, the project documentation provides for a sheet piling of the excavation in the approach zone.