Architectural and space-planning solutions

There is an existing decommissioned building built in 1937-1939 on the site. The building is complex in plan, 2-4-storey, with an attic and a basement. External walls and internal load-bearing walls are made of solid brick. Ceilings - from monolithic reinforced concrete. The roof is pitched, the rafter beams are wooden, the roof is made of galvanized roofing steel. The project documentation provides for the restoration and reconstruction (adaptation for modern use) of the building. All elements of the security items, the main and side facades, the courtyard facade up to the level of the 3rd floor, the interiors of the halls from the 1st to the 4th floors are preserved and restored. Reconstruction is provided without changing the size of the building in the plan. The design documentation provides for: arrangement of the attic floor with the superstructure of the outer wall of the yard facade; dismantling of existing partitions, installation of glass partitions for the central halls; dismantling of the wooden covering system; redevelopment of premises with the installation of new internal walls, partitions, door and window openings; insulation from the inside of the outer walls of the third, fourth and fifth attic floors with foam glass blocks; arrangement of two external staircases; superstructure of the central front staircase from the 4th floor to the attic floor; superstructure of elevator shafts up to the attic floor; arrangement of exits to the roof from two existing staircases; lowering the level of the basement floor with the installation of a reinforced concrete slab; arrangement of three exits from the basement floor. For the relative mark of 0,000, the level of the finished floor of the first floor, corresponding to the absolute mark of 6.10, is taken. The maximum height of the building from the planning level of the ground to the ridge after the reconstruction remained unchanged - 23,24 m. The main entrance to the building is provided from the side of the avenue. In the basement, at elevations -3,320 and -3,540, the following are designed: a block of dining rooms, amenity rooms, utility rooms, workshops for the repair of office equipment and equipment, meeting rooms, a safe room, utility rooms, storerooms. The height of the premises of the basement floor - 2,66; 2,78; 3,04; 3,26; 3,31; 3,4 m On the first floor, the following are designed: the main hall with security rooms, a block of bank premises, a block of office premises with jobs for the disabled, office premises, meeting rooms, an exhibition room, bathrooms with universal cabins for MGN. The height of the premises on the first floor is 3,2 and 3,74 m. On the second floor are designed: office space, meeting rooms, server rooms, bank premises. The height of the rooms on the second floor is 5,35 and 5,23 m. On the third floor are designed: administrative and office premises, meeting rooms, server rooms. The height of the rooms on the third floor is 3,8 and 3,9 m. On the fourth floor are designed: office space, meeting room, server room. The height of the rooms on the fourth floor is 2,8; 3,0; 3,4 m The fifth attic floor is designed for: office space, server rooms. The height of the premises of the fifth attic floor is 2,5; 2,8;3,0 m. Bathrooms, storage rooms for cleaning equipment, technical rooms are designed on each floor. For vertical communication between floors, existing and built-on stairwells, two elevators without machine rooms, with a load capacity of 1000 kg each, are used. Dispersed evacuation exits are provided from each floor. The outer wall of the attic floor is made of hollow brick with subsequent plastering. Internal walls and partitions, depending on the functional purpose of the premises, are designed: from hollow brick, monolithicreinforced concrete and plasterboard sheets on a metal frame filled with mineral wool boards; in rooms with a wet regime - from moisture-resistant plasterboard sheets with ceramic tile lining. Covering of the attic floor - profiled steel sheet with insulation, roofing - rolled, drainage - external, organized. The windows of the attic floor are designed with metal-plastic double-glazed windows. Interior decoration is carried out in accordance with the functional purpose of the premises. The design documentation provides for the accessibility of the building for people with limited mobility. A ramp is provided for MGN access from ground level to the first floor, bathrooms with a universal cabin, and fireproof zones are provided.

Structural and space-planning solutions

The technical survey of the existing 2-4 storey building has been completed. The existing building is a newly identified object of cultural heritage, built in 1937 - 1939 according to the frame-wall construction scheme. The outer and inner walls are load-bearing bricks made of solid clay on a cement-lime mortar. The thickness of the outer walls of the first and second floors is 510 mm, 640 mm, the third and fourth - 510 mm, the attic - 380 mm. The piers of the facade wall on the side of the avenue are reinforced with semicircular pilasters. Thickness of internal walls - 380 mm, 510 mm. According to the results of the survey, the category of the technical condition of the walls is limitedly operable, the calculated compressive strength of clay brick masonry is 12 kg/cmXNUMX. Lintels - reinforced concrete and brick. According to the results of the survey, the category of the technical condition of the jumpers is limitedly operational. The bearing supports of the basement are brick pillars and monolithic reinforced concrete columns. The main pitch of the pillars is 3,5 x 6,0 m, the section is 510 x 510 mm. The main step of the columns is 3,45 x 3,45 m; 2,8 x 3,5 m, column section - 500 x 500 mm, diameter - 500; 55.0 mm. Columns above 0,000 are monolithic reinforced concrete. The main pitch of the columns is 2,8 x 3,5 m, the section of the columns with a diameter of 450 mm, 260 x 260 mm. According to the results of the survey, the category of the technical condition of poles and columns is operational. Overlap above the basement - a monolithic reinforced concrete slab 100 mm thick along monolithic reinforced concrete beams, with a section of 200 x 300 (h) mm; 280 x 490 mm; 240 x 370, 390 (h) mm; 260 x 470, 530(h) mm. According to the results of the survey, the category of the technical condition of the ceiling above the basement is operational, concrete class B 17,5. Overlappings over 1, 2, 3, 4 floors - a monolithic reinforced concrete slab 100 mm thick on monolithic reinforced concrete beams. The monolithic beam system is made of main and secondary beams and a caisson type with a diagonal arrangement of beams of the same section. The section of the beams of the caisson system is 270 x 520, 550 (h) mm. Sections of the main and secondary beams 280, 305 x 610 (h) mm; 300 x 580, 670 (h) mm; 290 x 860 (h) mm; 430 x 760, 780 (h) mm, 245, 255 x 350 (h) mm; 240 x 520, 530 (h) mm; 280 x 470, 640 (h) mm; 420 x 590 (h) mm. The attic floor above the auction room is a monolithic reinforced concrete slab 100 mm thick along monolithic beams reinforced with rigid reinforcement from I-beam No. 22. The beams are supported on walls and steel tables attached to the nodes of the lower belt of steel roof trusses. Monolithic reinforced concrete distribution beams are made in the places where the ceilings rest on the walls. According to the results of the survey, the category of the technical condition of the floors is operational, the concrete class is B 17,5, the total allowable design load on the floors is 830 kg / m. Stairs - prefabricated reinforced concrete steps and monolithic landings on steel stringers and beams. According to the results of the survey, the category of the technical condition of the stairs - workable. Balconies in the auction room and on the facade - monolithic reinforced concrete on cantilevered steel beams with braces and monolithic reinforced concrete ribbed with support on the outer brick wall and internal reinforced concrete columns. According to the results of the survey, the category of the technical condition of the balconies is operational. The supporting structures of the roof above the auction hall are steel trusses with a span of 22,17 m. According to the results of laboratory tests of metal samples taken from the trusses, the trusses are made of steel grade St No. Zkp (GOST 380-2005, GOST 535-2005). The supporting structures of the coating in the rest of the building are a wooden truss system of rafters, racks, purlins, mauerlat and lathing. Roof - from galvanized roofing steel on a wooden crate. The category of the technical condition of the supporting structures of the coating is limitedly operable, the roof is unacceptable. Foundations - strip of limestone slabs and solid clay bricks on lime mortar and free-standing columnar monolithic reinforced concrete on a natural base. According to the results of the completed pits No. 1 - No. 13 and the examination of the foundations, the depth of the foundations from the planning level of the earth is 3,0 m, the width of the strip foundations is from 1,16 m to 2,2 m. dusty, medium density, saturated with water with the following characteristics: e=0,7, c=0,03 kg/cm, angle of internal friction - 28 degrees, E=150 kg/cm. According to the results of the survey and verification calculations, the category of the technical condition of the foundations is limitedly operable. According to the results of the survey, verification calculations and in accordance with TSN 50-302-2004, Appendix "B", the category of the technical condition of the building is the third (3). The project documentation provides for the reconstruction of the existing buildings with an attic floor superstructure, with the dismantling of the wooden covering system, partitions, concrete blocks and backfilling of the floors on the floors. The design documentation provides for: punching new openings in the walls and partial filling of existing ones; reinforcement of walls in places where openings are made with steel clips and lintels made of rolled profiles; partial reinforcement of reinforced concrete columns with steel clips, reinforcement of foundations with deepening of the basement floor up to 300 mm; arrangement of the attic floor, covering, lintels, stairs, separate openings in the ceilings. Reconstructed building of a normal level of responsibility. The spatial rigidity and stability of the building is ensured by the joint work of the vertical load-bearing elements of the building with hard disks of floors, truss ties and roof beams. According to the results of verification calculations, the bearing capacity of walls, ceilings, columns, trusses is sufficient to withstand the design loads, the structures do not require reinforcement. The designed staircases are separated from the existing building by a sedimentary expansion joint. External and internal load-bearing walls (laid openings) - brick with a thickness of 380, 510 mm from bricks of the KORPu 1NF / 150 / 1,4 / 75 / GOST 530-2007 brand on a solution of M 75. The outer load-bearing walls of the attic floor are brick 380 mm thick made of bricks of the KORPu 1NF / 150 / 1,4 / 75 / GOST 530-2007 brand on a solution of M 75.