Architectural and space-planning solutions

A multi-apartment residential building with built-in premises and built-in-attached underground parking on a land plot owned by the developer was designed. The project provides for the demolition of a two-story residential building, taking into account the technical condition of the building. The de-mounted building is not historical, and is also not registered as an object of cultural heritage. The building is designed as a sectional type, 5-storey (the last attic), rectangular in plan, with a basement, without an attic, with dimensions in the extreme axes of the underground part 46,4 x 35,5 m and the above-ground part 46,4 x 28,4 m in height from planning mark of the earth to the roof ridge 18,0 m. The volume-spatial and architectural solution of the residential building has been agreed upon. Deviation from the limiting parameters of permitted construction, in terms of reducing the minimum setbacks from the boundaries of the land plot, approved by the orders of the Committee for Urban Planning and Architecture dated 07.07.2010 No. 2204 and dated 13.08.2010 No. 2594. In the basement at the level of -4,250 m, technical premises were designed: cable, ITP, water metering unit, a room for automatic fire extinguishing installation, a room for temporary storage of fluorescent lamps and a built-in underground parking for 35 cars, which extends beyond the dimensions of the above-ground part of the building. The entrance to the car park is designed from the side of Dibunovskaya street along a closed ramp. Entrances to the basement floor are provided separate from the above-ground floors. The roof of the car park is operated with landscaping and landscaping elements. On the ground floor, built-in administrative premises for public purposes are designed. In all built-in premises, sanitary and hygienic blocks, engineering networks, independent entrances, isolated from the residential part of the building, are designed. The entrances to the built-in premises are equipped with lifts for people with limited mobility. Residential apartments are designed from the second to the fifth floors. The height of the premises of the basement floor is from 2,9 to 3,71 m; 1st-4th floors - 3,02 m, fifth (mansard) floor from 2,5-3,02 m. The entrance to the residential part of the building is provided with a vestibule and a security room. The entrances to the residential part are designed separately from the entrances to the built-in non-residential premises. 27 residential apartments are designed in the building, with the number of living rooms from one to four, equipped with bright kitchens, hallways and sanitary facilities. The apartments have balconies. Two stairwells of the L1 type are designed to exit the apartments, the dimensions of which provide for elevators with a carrying capacity of 1000 kg each, without an engine room. On the instructions of the customer, the building was designed without garbage chutes, the garbage collection chamber was designed on the first floor. The outer enclosing walls are designed with insulation from aerated concrete blocks and mineral wool slab with floor-by-floor support on the ceiling. Partitions in the residential part - brick and tongue-and-groove slabs, in the built-in premises - brick and plasterboard on a metal frame. Finishing of a facade - decorative plaster. Finishing of the plinth and porches - cladding with artificial stone and ceramic tiles. Roof - pitched, hip, covering - metal. Drainage from the roof - external organized. Windows and balcony doors - metal-plastic with double-glazed windows. The project provides for measures to ensure the vital activity of the disabled and people with limited mobility. Entrances to the built-in premises are designed with the device of lifts. Access to the first floors and all floors of the residential part is provided through stairwells equipped with elevators.

Structural and space-planning solutions

The constructive scheme of the five-story building is frame-wall. The frame is three-span (6 + 6 + 6 m) reinforced concrete, in the basement of the building - with side extensions, which are designed without the installation of adjacent walls, with sedimentary seams in the junction zone. All above-ground supporting structures are made of monolithic reinforced concrete, concrete B25, F100, working reinforcement A500s and A240. All underground supporting structures are made of monolithic reinforced concrete, concrete B25, F150, W8, working reinforcement A500s and A240. The non-bearing external walls of the building are made of aerated concrete blocks with a density of 500 kg / m3, grade B2,5, 300 mm thick, a layer of Rockwool insulation 50 mm thick and a layer of plaster 20 mm thick. Fastening the insulation to aerated concrete - with plate-shaped dowels, fastening aerated concrete to reinforced concrete - with galvanized anchors. The heat-insulating facade system adopted in the project documentation must be developed at the stage of "working documentation" and have the appropriate valid technical certificate of the Ministry of Regional Development of the Russian Federation. Bearing reinforced concrete pylons as part of the facade walls - 200 mm thick with a layer of insulation 150 mm thick and plastered. The outer walls of the basement are made of monolithic reinforced concrete 300 mm thick, with external insulation with a foam layer 50 mm thick. Columns along the middle axes - with a section of 400 x 400 mm with a step along the letter axes of 4,8 - 6,6 m. Internal walls and walls of stairwells - 200 and 160 mm thick. Partitions: made of solid brick M100 - 120 and 250 mm thick; from gypsum tongue-and-groove plates - 80 mm thick. Ceilings - beamless slabs 200 mm thick, in the area of ​​​​balconies - with thermal breaks. Overlapping over a cellar - 250 mm thick. Covering over underground extensions (operated roofs) - slabs 350 mm thick, designed for a load of 46 tf from a fire engine. The roof of the building is a steel truss structure. The constructive scheme is frame-bonded. Racks - from closed bent-welded profiles, with a maximum step of 3,3 m, designed to continue the reinforced concrete columns of the previous floor and with rigid support on the floor slab in its span. Cover beams - from rolled I-beams 20Sh1 and 30Sh1 with hinged support on the top of the racks and bolted to them, designed according to a multi-span scheme. Horizontal stiffeners - from closed bent-welded profiles, designed in the middle span, the upper zone of the columns. Rafters - from rolled channels No. 16P with a step of 1,2 m. Runs - from rolled channels No. 10P with a step of 1,1 m. Roof - a multilayer structure, consisting of: profiled flooring S44-1000-0,8; wooden crates and counter-lattices, between which a heater is placed; metal tiles. Elevator shafts - from monolithic reinforced concrete with wall thickness 160 mm. Elements of stairs - marches and platforms made of monolithic reinforced concrete supported by reinforced concrete walls. The spatial rigidity and stability of the building is ensured by the rigid coupling of all reinforced concrete elements of the building core and the joint work of columns, walls, pylons and stiffening cores of stair-elevator units with hard disks of monolithic floors. Calculations of the building structures were performed on the certified software package "Lira" v.9.6 and "Plaxsis" v.9 using finite element analysis. The required fire resistance of the structures was confirmed by the calculation. The level of responsibility of the building is the second (normal). The service life of the building is assumed to be at least 50 years. For the relative elevation of 0,000, the elevation of the floor of the first floor is taken, corresponding to the absolute elevation of + 4,200 m. The foundations were developed in accordance with the results of engineering and geological surveys. A pile version of the foundation was adopted. Piles - prefabricated reinforced concrete (concrete B25, W6), section 400 x 400 mm, length 14 m, immersed by indentation from the bottom of the pit, with an absolute mark of the point - minus 14.30 mm. The connection of piles with grillage is rigid. The base of the piles is silty plastic sandy loam (IGE8) with e = 0,425, E = 240 kg/cm2, φII = 25°, IL = 0,01. Based on the results of static sounding, the design load on the pile is assumed to be 70 tf and will be specified after testing. Grillage grillages are cross tapes made of monolithic reinforced concrete 600 mm thick, united by a floor slab 250 mm thick. Concrete B25, W8, F100, working reinforcement A500s. The absolute mark of the bottom of the grillage is minus 0.75 m. Preparation under the foundations - from a layer of monolithic concrete B7,5 with a thickness of 50 mm. The maximum level of groundwater is possible at a depth of 1,0 m from the earth's surface (the average annual level is at a depth of 2,2 m). 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: basement structures in contact with the ground are designed from W8 concrete, cold concreting joints and expansion joints - with waterstops; the device of a closed circuit from the "tefond" under the grillages and along the outer edge of the facade walls. Protection of basement structures from freezing - the installation of a heat-insulating circuit along the outer walls from a layer of "foam" 50 mm thick. The building was designed in the existing development on the site of a dismantled two-story building with a basement, at a distance of 9,4 m from the basement walls of the building.