Architectural and space-planning solutions

The design documentation provides for the construction of a school building for 300 students. The building is 2-3 storey, with a basement, complex configuration in plan. Dimensions in the extreme axes - 84,0 x 60,0 m. The height of the building from the planning mark of the ground to the top of the parapet of the roof superstructures is 16,98 m. For the relative mark of 0,000, the mark of the clean floor of the first floor of the building is taken. The building has a basement. At the basement level, engineering and technical premises (ITP premises, a water metering unit, a cable entry room) and a technical underground for laying engineering communications were designed. The height of the basement premises is at least 1,800 m. On the ground floor, the following are designed: the central entrance group of the school building with a staircase and elevator assembly, a vestibule and a cloakroom, recreation, food with a dining room and service premises, a block of medical premises, sanitary facilities for students and staff ( in accordance with the calculation), a library with a reading room, technical rooms (electric room, pool water treatment room), a block of elementary school classrooms and after-school group rooms, including bedrooms. The height of the 1st floor is 3,90 m. The height of the premises of the 1st floor from floor to ceiling is at least 3,0 m. service rooms, an assembly hall (25 x 11 m) with service rooms (dressing rooms, dressing rooms), sanitary facilities for students and staff, a gym (10 x 6 m) with changing rooms and showers, a block of classrooms and offices . The height of the 2st floor is 3,90 m. The height of the premises on the 2nd floor from floor to ceiling is at least 3,0 m. On the third floor, classrooms, administration offices, utility and technical rooms, including a ventilation chamber, a radio unit, sanitary facilities for students and staff are designed. The height of the premises on the 3rd floor from floor to ceiling is at least 3,0 m. Cleaning equipment rooms are designed on all floors. At the roof level, superstructures are designed - ventilation chambers and an elevator maintenance room, which have an entrance from the roof. The building has 4 staircases and an elevator with a capacity of 1000 kg. All staircases have direct access to the outside. Facades of the building - colored reinforced plaster over insulation. The basement and the first floor of the building are stone-clad. Over the entrances, visors are provided to protect against precipitation. Canopies - with an external drain, metal, coated with polymer paint, and reinforced concrete. Partitions are designed from brick, aerated concrete blocks. The premises of the school are finished depending on the purpose of the premises. All finishing materials are certified. Filling window openings - metal-plastic window blocks with double-glazed windows. The project documentation provides for a combined flat coating with an internal drain, a rolled roof. Access to the roof is provided from the volumes of staircases and external metal stairs. The project documentation provides for measures to prevent criminal manifestations, including a security room and access control; installation of a metal fencing of the territory is also provided. The project documentation provides for measures to ensure access and education of students with disabilities in full: ramps are provided for climbing to the level of the first floor, an elevator, anti-slip coating on the paths of movement of the disabled, the floors are designed without height differences. The building provides universal sanitary cabins.

Structural and space-planning solutions

Building responsibility level – II (normal). The building was designed according to the frame-wall structural scheme. Columns - monolithic reinforced concrete with a section of 400 x 400 mm, the grid of columns is irregular, maximum 6,0 x 6,0 m. The outer walls of the basement are monolithic reinforced concrete made of concrete of class B25, W6, F100 250 mm thick with external foam insulation and lining of the basement. The internal walls of the stairwells are monolithic reinforced concrete 200 mm thick. External non-bearing walls - multi-layered, from a layer of solid bricks of the M150, F25 brand 250 mm thick with floor-by-floor support on the ceilings, with an effective insulation 150 mm thick and finishing the facade with decorative plaster. The connection of the layers and the fastening of the brickwork to the supporting frame is carried out by flexible connections with an anti-corrosion coating. Floor slabs and coatings - monolithic reinforced concrete beamless slabs 200 mm thick. Along the perimeter of the building, contour beams with a section of 400 x 600 (H) mm are provided. The roof slabs above the large swimming pool, sports and assembly halls are designed from monolithic reinforced concrete with a section of 160 mm on fixed formwork from profiled flooring laid on steel trusses and beams from rolled profiles. Maximum truss span 15,0 m, truss spacing 6,0 m, beam spacing 1,5 m. The connection of trusses with columns is rigid, beams with trusses are articulated. The cover over the small pool is designed from prefabricated reinforced concrete ribbed slabs 400 mm high, span 9,0 m. The thickness of the walls and bottom is 300 mm. The design of the stairs is monolithic platforms and monolithic reinforced concrete steps along steel stringers. The material of above-ground structures is concrete of class B25, F100, reinforcement of class AIII. The rigidity and stability of the building is ensured by the joint work of vertical structures and hard disks of interfloor floors and coatings. The static calculation was performed using the Lira 9.6 computer system. The relative mark of 0,000 corresponds to the absolute mark of 28.55. The foundations for the columns are columnar, for the walls - strip foundations on a natural base made of monolithic reinforced concrete of class B25, W6, F100. Under the foundations, concrete preparation is provided from concrete of class B7,5 with a thickness of 100 mm. In accordance with the report on engineering and geological surveys, the base of the foundation is the EGE-2 soils (dusty plastic yellow sandy loam with interlayers of dusty sand with φ=26º, e=0,532, E=105 kg/cm2), EGE-3 (fine sand of medium density saturated with water with rare interlayers of silty sand with φ=32º, e=0,65, E=200 kg/cm2) and EGE-4 (dusty dense yellow sand with thickened interlayers of sandy loam, wet with φ= 34º, E=280 kg/cm2 ). The expected draft is 1-3 cm, the difference in draft does not exceed the maximum allowable values. Design solutions provide for the use of low-permeability concrete, coated waterproofing of foundation surfaces in contact with the ground. The building is located in the existing building, at a distance of 20,0 m from the transformer substation.