Architectural and space-planning solutions

The building of the children's educational institution (DOE) is designed as one-two-three-story with a basement. The building has a complex shape in plan with dimensions in the axes of 70,8 m x 28,2 m and a height of 1-3 floors of 3,30 m. The height of the main three-story part of the building to the top of the parapet is 12,8 m. 185 group cells were designed for places (three nurseries with 10 children in each group, and seven preschools with 15 children in each group). Group cells consist of a dressing room, toilet, group, pantry and bedroom. Group cells are designed on the 20st, 1nd and 2rd floors, each cell is designed to be impassable, conveniently connected to all other necessary premises and has two emergency exits. Three stairwells and an elevator with a carrying capacity of 3 kg are designed to rise to the 2nd-3rd floors. There are three cargo lifts with a carrying capacity of 630 kg each: one - from the 100st to the 1rd floor and two - through the vestibule locks from the basement to the 3rd floor. In the basement, technical rooms for engineering support of the building, as well as laundry rooms, an ironing room, a maintenance workshop and a bathroom for staff are designed. There are six exits from the basement through the pits to the outside. On the 3st floor there are 1 group nursery cells and 3 group preschool cell, a block of medical premises (with a separate external exit), a pool room with a 1 x 3 m bath and a catering room with a separate entrance. The main entrance is designed in the center of the building, a security room is provided at the main entrance. For nursery groups, separate exits from the dressing rooms to the walking areas are organized. On the 7nd floor there are 2 group preschool cells, halls for gymnastic and music classes with inventory storage rooms, the manager's office. On the 4rd floor there are 3 group preschool cells, a universal circle room and administration and teachers' premises. Rooms for cleaning equipment and bathrooms for staff are provided on the 2st, 1nd and 2rd floors. The porch of the main entrance to the 3st floor is equipped with a ramp with a slope of 1%, for lifting parents with prams and disabled parents. External walls of the building: self-supporting three-layer reinforced concrete panels with a total thickness of 8 mm with internal insulation made of expanded polystyrene and painted with facade paints on the ground. Plinth - porcelain stoneware cladding. The railings of the stairs are metal, the height of the railings is 400 m. indoor swimming pool with triple glazing. The roof is flat, with an organized internal drain.

Structural and space-planning solutions

The level of responsibility of the building is II, normal. The structural system of the building is combined. At the basement level - mixed, column-wall, with load-bearing outer walls. The outer walls of the basement with a thickness of 300 mm are designed from monolithic reinforced concrete of class B 25, W8, F100. The inner walls of the basement are 250÷510 mm thick, made of solid brick M100 on mortar M75. The above-ground part of the building is designed in a tie frame with a mixed arrangement of frames made of prefabricated prefabricated reinforced concrete elements in the formwork of the 1.022 KL-2 series, produced by JSC PO Barrikada for a unified payload for floors and roofs of 800 kg/m2. Frame columns - prefabricated reinforced concrete of class B40 ÷ 22,5 concrete with a section of 400 × 400 mm, column grid 3,0 ÷ 6,0 m x 3,0 ÷ 9,0 m. 35 and 450 mm high. Stiffness diaphragms - prefabricated reinforced concrete from B600 class concrete, 25 mm thick. Ceilings and roofing - prefabricated reinforced concrete of class B140÷40 concrete, multi-hollow, ribbed and solid section, 20 mm thick. Ventilation blocks - prefabricated reinforced concrete. Stairs - prefabricated reinforced concrete marches with semi-platforms. Relying on stiffness diaphragms and stair crossbars. The outer walls of the above-ground part of the building are self-supporting three-layer reinforced concrete panels of individual manufacture, made of concrete of class B 25, F50-100, 400 mm thick, with an inner layer of effective insulation. The connection of the layers of the panels is carried out by flexible connections with an anti-corrosion coating. The panels are fastened by welding the connecting elements to the embedded parts of the frame. Corrosion protection of attachment points is carried out due to monolithic solution M100, W4. Pool structures - a monolithic reinforced concrete bowl made of B25, W8 class concrete (wall thickness 200 mm, bottoms 200÷400 mm), installed on a monolithic reinforced concrete frame made of B25 class concrete, consisting of cross beams with a section of 300 x 500 mm and racks with a section of 300 x 300 mm, rigidly clamped in the grillage plate. The ceiling above the pool is designed from ribbed sanitary slabs that do not have hidden voids and cavities. The walls of the pool are made of solid bricks. The rigidity and stability of the building is ensured by the operation of the frames together with stiffening diaphragms installed in and out of the plane of the frames, rigid pinching of the columns in the foundation and hard disks of floors and roofs. Rigidity and geometric invariability of floor and roof disks is ensured by the installation of slabs along the axes of the columns - struts having welded joints with crossbars using metal connecting elements. The calculation of building structures was performed using LIRA 9.4 and NormCAD programs. The relative elevation of 0,000 corresponds to the absolute elevation of 4,950m. The foundations were designed on the basis of engineering and geological surveys carried out at the construction site. The foundations of the building are piled. Piles - driven, prefabricated reinforced concrete, section 30 x 30 cm, length 9,0 m, made of concrete class B25, W6, F100. The design load on the pile was taken based on the results of static sounding and is 64 tf. Light silty bluish-gray solid loams lie at the base of the pile tip (E = 140 kgf/cm2, IL = -0,31, e = 0,447). Expected settlement is 4 cm. The project provides for static load testing of piles. Rostverk - a monolithic reinforced concrete slab 500 mm thick, made of concrete B 25, W8, F50 with monolithic under-columns for the junction of columns. The connection of piles with grillage is rigid. Under the grillage, preparation from monolithic concrete of class B7,5 with a thickness of 100 mm is provided. The maximum groundwater level is expected near the daytime surface of the earth. Groundwater is slightly aggressive in terms of the content of aggressive carbon dioxide in relation to concrete of normal permeability. The project provides for the use of low-permeability concrete, coated waterproofing of surfaces in contact with the ground. The normative depth of freezing of bulk and alluvial soils is 1,7 m.

Organization of construction

The construction master plan was developed on a scale of 1:500 for the period of construction of the building, taking into account the preparatory period. The construction site is protected by a fence in accordance with GOST 23407-78. The width of temporary on-site roads constructed from reinforced concrete slabs is at least 3,5 m. The movement of cars is provided in a circular pattern. At the exit from the site, a vehicle wheel wash is arranged. Temporary water supply - imported power supply - from existing networks according to the specifications of the owners. The mechanization of construction is complex. Work is carried out in 2 shifts. Materials are stored in open areas with a stock of materials for 3-5 days. Provision of construction materials from construction industry enterprises. Construction site of temporary container-type buildings. Removal of construction waste for disposal at a solid waste landfill. Duration of construction: 10 months. Number of employees: 143 people. The construction organization project was completed in accordance with the current norms and rules. The requirements for the organization of the construction site, labor protection and hygiene of construction work, methods of construction work, methods of instrumental control over the quality of construction, labor safety measures, and environmental conditions are met in full. The use of materials and mechanization specified in the project is justified by calculations and conditions for the production of work. The method of arranging the pile field (driving) chosen in the project can be used to complete the specified types of work before the commissioning of the buildings of the residential complex surrounding the construction site of the PEI. If this condition cannot be met, the pile driving method should be replaced with the vibro-driving method.

Estimated documentation

Estimated documentation was compiled by the basic-index method for determining the cost of construction in accordance with the current legislation on the basis of methodological and regulatory documents provided for by the estimated and regulatory base for pricing in construction in 2001 using territorial unit prices.