Architectural and space-planning solutions

Space-planning solutions

The administrative and office block is a six-story volume and includes the necessary set of office premises located on all floors, the entrance area (lobby), as well as the area of ​​amenity premises. The building of the six-story administrative and office block is attached to the one-story multifunctional block and is separated from it by a type 1 fire wall. Both function blocks have independent inputs. The entrance to the administrative and office block is located from the side of the main facade and the guest parking lot and is provided from the porch, at a relative elevation of + 0.450. The area of ​​household premises includes men's and women's bathrooms, as well as rooms for storing cleaning equipment. Also on each floor, in the office area, there are rooms for server equipment. The main entrance to the Administrative and Office Block along axis 1 in axes 7-8 leads to the lobby, which also houses a L1-type stairwell, which serves to connect the first floor with office space on the second and subsequent floors. The staircase has light openings on each floor. Two passenger elevators with a carrying capacity of 1000 kg each (type "OTIS 2000R", model RS 13923D) are located in the central zone of the staircase. Elevators are located in brick shafts. The dimensions of the elevator cabins are 1100 x 2100 mm, the cabin type is impassable, "deep". One of the lifts designed for transportation of fire departments, with fire resistance of shaft doors Ei60. Delivery of elevator equipment is carried out by OTIS. The second evacuation exit from the floors is provided by metal stairs of the third type in the G-1/2 and G-13/14 axes, which have access to the outside directly to the territory adjacent to the building. The width of the marches in the stairs is 1,2 m. The structures of the escape routes are non-flammable (made of shaped pipes, painted), and the materials for their decoration and flooring comply with the requirements of paragraph 6.25 of SNiP 21-01-97 *. The technical room is located on the 6th floor of the administrative and office block between axes 7-8. The multifunctional part of the building, located in the depth of the site, is a one-story volume, the floor level of the premises is 0,000, which is due to the natural relief. The one-story part consists of sections and departments intended for pre-sale preparation of loading and unloading equipment of the Japanese company Komatsu, as well as premises for temporary exhibitions of equipment and temporary storage of spare parts, other auxiliary, office and service premises. The one-storey part of the building has a height from floor to covered - 5,7 m. The roof is gable. Entrances to the premises of the one-story part of the building from the territory and evacuation of personnel are provided through the doors of service entrances to the building, as well as through swing gates of sectional lifting gates. Space-planning indicators of the Administrative and office block in accordance with the Customer's TOR, the number of employees in the building is 600 people.

Facade decoration and basic structural materials.

The main solution for finishing facades is sandwich panels with mineral wool insulation and an outer surface made of profiled metal sheet with a polymer coating from Stroypanel - 150 mm thick. A canopy is provided above the entrance to protect against rain. In the zone of domestic premises, the facade of the first floor is provided mainly deaf. The color of the facade panels in accordance with the approved town planning justification is white (RAL 9016), gray (RAL7031), red (RAL2002). The basement part of the facade of the building is finished with gray artificial stone on a galvanized grid of the Rabitsa type. The frame of the ABK is designed from metal structures, with the device of precast-monolithic reinforced concrete interfloor ceilings. The roof is flat with an internal drain along the supporting steel beams with insulation based on Rockwool mineral wool boards and the PROTAN rolled membrane. Cover metal structures with a fire retardant composition and veneer with 2 layers of GVL in accordance with SP 55-102-2001. The walls of the staircase in the G / 7-G / 8 axes are made in brickwork K-150/1/25 GOST 530-95 on a cement-sand mortar M100 250-380 mm thick with reinforcement in horizontal seams GOST 6727-80 * through six rows in height with reinforcement d4ВрI. The enclosing structures of the technical gallery are designed from sandwich panels with mineral wool insulation and the outer surface from a profiled metal sheet with a polymer coating by Stroypanel. The construction of the covering of the technical gallery is made of roofing sandwich panels with mineral wool insulation and the outer surface of a profiled metal sheet with a polymer coating by Stroypanel, 100 mm thick. over metal beams. Internal partitions are made of gypsum boards on a metal frame in accordance with SP 55-102-2001 filled with mineral wool. Partitions are mounted after laying ventilation and electrical communications. The internal partitions are partially made in brick K-150/1/25 GOST 530-95 on a cement-sand mortar M 100 with a thickness of 120 mm with reinforcement in the horizontal joints of the masonry in accordance with GOST 6727-80 *, through six rows of masonry in height with a diameter of 4- B-I with fixing the top to the ceilings. Finishing of the premises is provided in accordance with the current hygienic and fire safety standards. Walls and partitions are sheathed with GVL, followed by puttying and painting. Suspended ceilings "Armstrong" are performed after the installation of ventilation systems. Window fillings - double-glazed windows in a binding of metal-plastic profiles of white color. Facade stained-glass windows are made of single-chamber double-glazed windows with energy-saving blue-tinted glass, tinted in bulk, on an aluminum frame, entrances and external doors are made in aluminum profiles. Doors in stairwells, common corridors, elevator lobbies should be equipped with devices for self-closing and seals in the porches, in a non-threshold design. Window and door openings in masonry are made without quarters. Insulation of window and door openings is formed using an external facade system for insulating the walls of buildings (mineral wool "ROCKWOOL" followed by plastering or cladding panels according to the ventilated facade system). Ceilings are precast-monolithic reinforced concrete. The ceiling and structures of the first floor are provided in fire-resistant design, class EI-150. In accordance with the generally accepted classifiers of office real estate, the permissible load on interfloor ceilings (from the first to the fifth floor) should be more than 450 kg / sq.m. Which, in turn, meets the requirements for the load on the interfloor ceilings specified in SNiP 2.01.07-85 * "Loads and Impacts", for the floors of assembly and conference halls, clause 4 in Table 3.

 Structural and space-planning solutions

Reinforced concrete structures

The project provides for the construction of a new six-story three-bay building for the Techno-trade center, adjacent to the existing one-story building. In this section of the project, drawings of the KZh brand have been developed, which provide for the following work: designing foundations from drilled and driven piles d = 400 mm under the building frame columns. The grillage is arranged on piles without independent transfer of loads from the building to the ground; installation of prefabricated reinforced concrete multi-hollow slabs of floors and roofs of the building with the installation of monolithic sections; arrangement of an internal staircase in the center of the building in axes 7-8; the device of a monolithic reinforced concrete porch of the entrance to the building. The building of the Techno-trade center belongs to the 2nd class of responsibility in accordance with GOST 27751-88. According to the functional fire hazard, the building belongs to the FZ class. The projected degree of fire resistance of the building is II. The ceiling between the first and second floors is designed for fire protection. The building is located in the III-snow region, the estimated snow load is 180 kg/sq.m., the building is located in the II-wind region, the standard wind load is 30 kg/sq.m. The design of pile foundations is carried out on the basis of SNiP 2.03.11-85*. Hydrogeological data on soils at the construction site were adopted in accordance with the “Conclusion on the engineering and geological conditions of the building construction site”, completed by Universal Company in 2009. Engineering and geological conditions of the site of the designed building can be characterized as complex. At a depth of 3,3 m (from the surface of the earth) to 19,3 m (in axes 1-6) and up to 15,5 m (in axes 7-14) very weak soils occur: light silty soft-plastic loams (very soft plastic ) with a deformation modulus - 50 kg/sm.kv. Unfavorable construction factors include: heaving of the foundation soils; high occurrence of groundwater, the maximum position of the groundwater level is 0,5-0,8 m relative to the soil surface; thixotropic properties of soils; low values ​​of strength and deformation characteristics of foundation soils. According to the chemical analysis of samples, groundwater is not aggressive towards concrete of normal permeability. When designing a pile foundation for a building in the project, according to hydrogeological data on soils and verification calculations, bored piles with a diameter of 40 cm and a length of 21 m in axes 1-6 and 16 m in axes 6-14 were selected. Grills are taken in the form of monolithic reinforced concrete slabs 40 cm thick. The calculation of the pile foundation was carried out on the PC program "System for the calculation and analysis of building structures", base version 10. Loads on the foundations of a six-story three-span frame are collected from the own weight of all frame structures with spans of 5 m, frame spacing of 6 m and temporary standard load on the 1st-5th floors - 450 kg/m2. Temporary load on the 6th floor - 250 kg/m2. The number of piles and the sizes of grillages are taken according to the calculations. The maximum vertical load on piles in the middle columns of the frame is 240 tons. The maximum vertical load on piles in the outer columns of the frame is 130 tons. The bearing capacity of a pile 21 m long is 92,3 tf, the bearing capacity for pulling out is 29,2 tf. The bearing capacity of a pile 16 m long is 74,4 tf, the bearing capacity for pulling out is 19,3 tf. The maximum settlement of the foundation from piles 21 m long is 0,8 cm; The maximum settlement of the foundation from piles 16 m long is 1 cm. Uneven settlements of pile bushes with a length of 21 m and 16 m are eliminated by the device of a temperature-strain joint along axis 6 (at the place of change in the length of the piles). For a relative mark of 0.000, the mark of the finished floor of the 1st floor was taken. For the relative mark of the earth, the mark is taken - 0.450, which corresponds to the absolute planning mark - 15.050. Horizontal waterproofing from capillary moisture and atmospheric precipitation is arranged on the upper surface of the grillage and consists of a single layer of isoplast on bituminous mastic. Waterproofing of piles and side surfaces of grillages due to the non-aggressiveness of groundwater to concrete is not provided for in the project. The construction of a new building is carried out near the existing building (at a distance of 3 meters from the extreme axis of the designed building), the existing building is at risk and it will be necessary to provide for its monitoring. According to the results of the survey of the existing building, all supporting structures are in a satisfactory condition. Monitoring is carried out by a specialized organization. The main task of monitoring is to record the excess of safety criteria for construction work over safe values. Full-scale tests of piles are carried out in order to determine the bearing capacity of piles in accordance with GOST 5686. Floor and coating slabs are fastened to each other with twists from f6FI reinforcement. The seams between the floor slabs and coatings should be sealed with cement mortar grade not lower than M100. Monolithic sections in ceilings and roofing shall be made of class B25 concrete. The connection of reinforcing meshes and frames is carried out by electric arc welding in accordance with GOST 14098-91 with electrodes of type 342. The structures of the internal staircase and the external porch shall be made of class B20 concrete. Reinforcement of monolithic structures adopted class AIII from concrete class B20; W6; F100. The spatial rigidity of the building is ensured by the installation of vertical ties, the installation of hard reinforced concrete horizontal disks in the ceilings.

Metal structures.

The building according to the constructive scheme is frame. The main building structures of the building frame are as follows: foundations under the columns - monolithic reinforced concrete grillages on bored piles; metal frame racks made of rolled steel according to GOST 26020-83; interfloor floors, prefabricated reinforced concrete multi-hollow slabs, based on metal crossbars made of rolled steel STO ASCHM 20-84; the roof is soft combined insulated; installation of metal external stairs along the ends of the building in the axes G-D / 1-2 and G-D / 13-14. For interfloor ceilings, a normative temporary load of 450 kg / sq.m. All metal structures are made at the KM stage. All metal structures of floors and coatings should be painted with alkyd enamels or oil paints on a primer (red lead) in accordance with SNiP 2.03.11-85. Welding of metal structures shall be carried out in accordance with GOST 5264. Welding shall be carried out with E45 electrodes in accordance with GOST 9467-75. The project of fire protection of metal structures is developed in a separate volume of the project.