Architectural and space-planning solutions

The building of the trade complex is rectangular in plan, 102,00 x 42,00 m in size, has a basement floor, 2 above-ground floors. In the basement floor with a floor-to-ceiling height of 3,30 m, there is an underground parking lot for 118 cars, rooms for engineering equipment. On the ground floor with a floor-to-ceiling height of 5,70 m, a grocery store was designed as part of a trading floor that provides for self-service operation, utility and utility rooms, and a loading room for 6 cars. On the second floor with a floor-to-ceiling height of 5,70 m, a non-food store was designed as part of a trading floor that provides for self-service operation, utility and service premises, a cafe for 24 seats. Delivery of goods to the level of the second floor is carried out by two freight elevators with a capacity of 2000 kg from the loading room on the first floor. On the roof there are superstructures with rooms for accommodating ventilation equipment and exits to the roof. To ensure technological connection between floors and evacuation, five staircases L1 are provided, which have access to the street, two escalators, two cargo-passenger elevators with a capacity of 1000 kg, descending to the level of the underground parking lot. For access to the technical premises of the basement floor and evacuation from the parking lot, isolated entrances to the street are provided. Car access to the car park is provided by two single-track ramps. The roof is flat, combined with an internal organized drain. Exits to the roof are provided from the volumes of stairwells. Filling of window openings - metal-plastic window blocks with double-glazed windows, stained-glass windows. Finishing of facades: plinth - cladding with ceramic granite slabs on monolithic reinforced concrete walls with a layer of foam insulation; walls of above-ground floors - aerated concrete blocks, insulation from facade mineral wool boards, facing with metal facade cassettes on a metal frame. Partitions - depending on the functional purpose of the premises - from aerated concrete blocks, in rooms with a wet regime and technical rooms - brick. Interior decoration is carried out in accordance with the functional purpose of the premises. The project provides for measures to ensure the life of people with limited mobility.

Structural and space-planning solutions

The building is divided by a temperature-expansion joint into 2 blocks. The building was designed according to a frame-bonded structural scheme with stiffening cores (stairwells) and stiffening diaphragms. External walls - non-bearing, 200 mm thick, aerated concrete grade D600, B2,5, insulated with mineral wool boards and lined with metal cassettes of hinged facades. Aerated concrete is attached to the columns with reinforcing outlets with a height step of 1,5 m. Inner walls are load-bearing (stiffness diaphragms) monolithic reinforced concrete 180 mm thick, B25 concrete, A400 reinforcement. The basement walls are external - monolithic with a thickness of 250 mm, internal - monolithic with a thickness of 180 mm. Overlappings - monolithic, 200 mm thick. Concrete B25, reinforcement A400. Columns - monolithic reinforced concrete with a section of 450 x 450. B25 concrete, A400 reinforcement. The main pitch of the columns is 6,0 x 9,0 m. The beams are monolithic reinforced concrete, 400-425 mm wide, 650 mm high. The beams are arranged in a grid of columns. The coating is a monolithic reinforced concrete slab with a thickness of 160 mm along the beams. The layout of the beams is similar to the ceilings. Elevator shafts - monolithic reinforced concrete. The spatial rigidity and stability of the building is ensured by the joint work of the load-bearing walls, the rigidity of the frames, the rigidity of the supporting nodes of the columns, the stiffness cores formed by the stairwells, and the hard disks of the floors. The calculation of load-bearing structures was carried out on a computer using the SCAD 11.1 program. Stairs - prefabricated reinforced concrete. steps on metal stringers. Foundations are made of piles. Piles - bored with a diameter of 400 mm, length 16 m using CFA technology. Concrete B25,W8, F100. The design load on the pile is assumed to be 70 tf. Grillage - slab of monolithic reinforced concrete 600 mm thick. Concrete B25,W8, F100. Pairing of piles and grillage is rigid. A 100 mm thick concrete preparation is provided under the foundation. The calculation of the foundation was carried out on a computer using the SCAD 11.1 program, taking into account the work of ground structures. The relative elevation of 0.00 corresponds to the absolute elevation of +28,55 m. In accordance with the report on engineering and geological surveys, the base of the foundation is silty dense sands, E = 340 kg/cm2, e = 0,500. The allowable design load on the pile was adopted based on the results of static sounding. Before mass piling, the bearing capacity of the piles will be checked by static tests. The maximum groundwater level is expected near the day surface. Groundwater is not aggressive to concrete of normal permeability. In order to protect the concrete of underground structures, the concrete grade for water resistance is W8, the concrete surface is coated with bituminous mastic. The working draft provides for coating waterproofing of the basement. The expected average settlement of the building is 38 mm. Bored piles are made using CFA technology. The project provides for testing the quality of the piles by ultrasound.