Totals

The projected building is 4-storey with an attic floor in a pitched roof and a car park for 31 cars in the basement of the building. Non-residential premises (offices) are located on the ground floor of the building. The underground car park is designed taking into account fire safety requirements and has one entrance and exit. The underground floor also houses technical premises: ITP, ventilation chambers, a water metering unit, a control unit for the automatic fire extinguishing system of the car park (APT). The main entrances and the entrance to the building are solved from the side of the intra-block passage and oriented to the southeast. Fire engines are provided around the building. The level of responsibility of the building for its intended purpose is normal. Degree of fire resistance - II. Service life - not less than 50 years. Functional fire hazard class - F 1.3. Functional fire hazard class of built-in premises - F 3.1. Constructive fire hazard class - CO. The number of floors is 4 and an additional attic floor in a pitched roof. The total height of the above-ground floors is 17,84 m.

Constructive decisions

The complex is considered in the risk zone of the surrounding development of historical buildings. The level of responsibility was adopted according to Table 5.1 TSN 50-302-2004 S-Pb II - Normal level. The package КР1 includes: geological structure of the construction site; drawings of pile foundations; calculation of the main load-bearing structures, as well as geotechnical justification for the construction of a building in the risk zone of the surrounding development. The designed building is a monolithic, reinforced concrete, 5-storey building with a basement, divided into two sections by a temperature-shrinkage joint. The structural scheme of the building is mixed with load-bearing reinforced concrete columns 300x300 (h) in the basement and load-bearing transverse reinforced concrete walls 180 mm thick, starting from the 1st floor. The enclosing structure of the wall is a multi-layered stone wall with plaster lining on a grid, floor by floor with typical floor heights of 3,0 m. The height of the 1st floor is 3,54 m. The height of the basement room is 3,32 m. external drain. The basement of the building is designed for car parking. There is a ramp for cars to enter the basement from the adjacent territory. Basement walls 200 mm thick are located along the outer contour of the building. Bearing reinforced concrete columns 300x300 (h), connected at the top with reinforced concrete beams 300x500 (h) and a reinforced concrete floor 180 mm thick, form the supporting frame of the building. Starting from the 1st floor, the building structure is formed by load-bearing transverse reinforced concrete walls 180 mm thick, going in increments of 4,2 m; 4,5 m; 6,2 m and 7,6 m and load-bearing transverse brick walls 380 mm thick, running along the perimeter of the building. The floors in the building are reinforced concrete with a thickness of 180 mm. Ceiling over the basement on reinforced concrete beams 300x500 (h). In the rest of the floors, spans of 7,6 m are also covered with reinforced concrete beams 300x500 (h). The roof of the building in the form of a semicircle is formed by metal beams made of I-beams N25B2 STO ASCHM 20-93, going with a step of 1,5 m. The building has two stair-lift units in axes 4-5 and 10-11 m / o B-V. There are also two staircases leading out of the car park. The building is rectangular in plan. A design feature is a reinforced concrete frame of 300x300 (h) columns in the basement, which passes higher into transverse reinforced concrete walls 180 mm thick. The dimensions of the building in plan are 70,0 x 17,3 m. Height from el. 0,000 is 17,84 m. Concrete of walls, columns, crossbars and ceilings is accepted B25, W4, F75. The frame was calculated taking into account the joint work of the entire structure, including monolithic foundation walls, foundation slab, transverse and longitudinal walls, columns and ceilings, etc. supported on flexible pile supports with a single pile stiffness of 1546 t/m under the Lira 9.4 program. According to the results of calculations of the system "Foundation - piles - box-type foundation - building", taking into account the coefficient of increase in settlement Rs = 4.3, Table 7.19 SP 50-102-2003, the calculated settlement of the foundation of a 5-storey building was S = 19,5 mm, which is less maximum allowable for a box foundation Sult = 20 cm according to the table. 4.1 TSN 50-302-2004. Relative difference between draft ΔS/L = (19,5 - 12,5)/8650 = 0,0008 < 0,0020 and list ΔХ/Н = 2/17840 = 0,0001 < 0,004 according to the table. 4.1 TSN 50-302-2004. The maximum reaction of the base soil under the foundation slab is R = 10,2 t / m2 < Ro = 24 t / m which confirms the relatively uniform load on the pile field. The spatial rigidity of the building is provided by monolithic junctions of transverse load-bearing walls with disks of monolithic reinforced concrete floors 180 mm thick. The maximum deflection of a typical floor, taking into account the non-linear behavior of concrete, is 20,2 mm. Relative deflection 1/366 < 1/200. External walls - load-bearing ceramic bricks of brand 125 with a thickness of 380 mm on a solution of brand 100, γ = 1200 kg / m3, insulation δ = 120 mm. The KZh.0 project includes: a plan of the pile field, a reinforcement structure for bored piles with a width of 350 mm. and the foundation slab, the layout of the walls and columns of the basement and their reinforcement, the ceiling above the basement.

Foundations

The foundations of the building are made in the form of a monolithic reinforced concrete box structure on a pile foundation. The piles are designed with a length of 4,0 m and a cross section of 350 mm. with a design bearing capacity - 60 tons. In total, the project provides for 37 piles per section with a total weight of one section of 4900 tons. Piles are reinforced with longitudinal reinforcement 7 sh 16 A400 and transverse annular reinforcement sh 10 A240 with a step of 200 mm. Pile concrete accepted B25, W6, F150. The dimensions of the foundation in plan are 17 x 70 m. The height of the box-shaped foundation is 3,80 m. The monolithic foundation slab is 350 mm thick. The relative elevation of the bottom of the foundation slab is -4,010 m (0.000 is taken as the level of the finished floor of the first floor). The relative mark 0.000 corresponds to the absolute mark +4.760 in the system of marks of the general plan.

Walls

Enclosing load-bearing walls are made of multi-layered ceramic bricks of grade 125, 380 mm thick, mortar grade 100, γ=1200kg/m3, lined with insulation 120 mm thick, covered with mesh plaster. Basement walls are monolithic reinforced concrete 200 mm thick. Concrete walls accepted class B25, W6, F150. The walls of the pits are monolithic. Internal load-bearing walls from the 1st to the 5th floor are monolithic reinforced concrete 180 mm thick. from concrete class B25. Their thickness is mainly determined by the conditions of noise protection.

Overlap

Basement ceiling. According to the project, the ceiling above the basement at el. -0.160 is made of monolithic reinforced concrete with transverse and longitudinal crossbars 300x500 (h). The thickness of the overlap is 180 mm. The calculation of the slab was made according to the 1st and 2nd limit states and based on the physiological requirements for limit deflections. The rigidity of the floor disk in its plane is provided by a monolithic floor slab. Noise protection is provided by a total thickness of reinforced concrete floors of 180 mm. Overlapping over the 1st - 4th floors. According to the project, the ceiling above the 1st - 4th floors is made of monolithic reinforced concrete with a thickness of 180 mm. On spans of 7,6 m, reinforced concrete beams 300x500 (h) are introduced. The calculation of slabs and beams was made according to the 1st and 2nd limit states and based on the physiological requirements for limit deflections. The rigidity of the floor disk in its plane is provided by a monolithic floor slab. Noise protection is provided by a total thickness of reinforced concrete floors of 180 mm.

Roof. The roof is semi-circular, gable along metal beams from I-beams N25B2 STO ASCHM 20-93, lying along the letter axes with a step of 1,5 m. On the lower shelves of the I-beams, professional flooring H 60-750x0,8 is laid, insulation "ROCKWOOL" δ = 150mm. The coating is a self-tightening membrane of the "Barrier-OS" type. Floors. The floors in the premises of the first floor are made of porcelain stoneware on glue on a screed with a heater. In residential premises, floors on a reinforced central substation. screed with soundproofing "Izolon". On stairwells made of porcelain stoneware with glue on a leveling screed. Ladders. Staircases are monolithic. The flights of stairs are also monolithic. Partitions. Inter-apartment partitions made of concrete stone "MELINKONPOLAR" 190 mm thick with surface plastering of 15 mm on both sides. Filling window and door openings. According to the project, the windows are made of wood with double-glazed windows according to individual sizes; internal doors - wooden, deaf in accordance with GOST, with a leaf height of 2 m. Elevators. Elevator shafts are provided from prefabricated reinforced concrete blocks of the VI 50-81 and VI 53-82 series. To reduce the transfer of dynamic loads from elevators, the blocks are separated from the floors. Ventilation blocks. Ventilation blocks according to the project are made of reinforced concrete.