The status quo

The building is 12-storey, there is a warm attic and a basement under the whole building. The building was built in 1967 according to a standard project of series II-18-01/12. Major repairs were not carried out. The foundations are strip foundations made of foundation concrete pads of the FL type, foundation concrete blocks of the FBS type in several places made of bricks. Cement mortar - M25. Foundation concrete blocks - M100. Foundation pillows - M150. Clay brick - M75. The design resistance of brickwork, according to SNiP P-22-81 v. 2, is assumed to be 11,0 kgf / cm2. The base soils directly underlying the soles of the foundations of the building are dark brown sands, of medium size, medium density, with inclusions of gravel and pebbles, wet. The condition of the foundation-soil contact is satisfactory. Above the level of the base of the foundations, bulk soils of backfilling of foundation trenches and pits lie. The embankment is sandy, with inclusions of construction debris, rubble bricks, caked, low-moisture. The thickness of bulk soils reaches 1,4 m. Foundation depth: a) external walls - from the surface of the earth 2,1-2,65 m aboutbasement floor t 0,75-0,83 m; b) internal walls - from the basement floor 0,72-0,75 m. When extracting the pits, no cracks or buckling were found. The curvature of the basement horizon was not revealed. In the laying of foundations and basement walls there are vertical cracks with an opening of up to 2 mm. There are some chips in the basement. The outer walls are made of large expanded clay concrete blocks of 2-row cutting with a thickness of 400 mm-500 mm. Internal walls - load-bearing from concrete blocks of 2-row cut 390-540mm thick with round voids used as ventilation ducts. The walls of the staircase are made of prefabricated concrete blocks with a thickness of 390 mm. The condition of the walls according to SP 13-102-2003 is assessed as operational, no defects that reduce the bearing capacity were found at the time of the survey. External walls meet the requirements for thermal characteristics. Ceilings above the basement from prefabricated reinforced concrete floorings of the "NU" and "RT" types. Above the 1st-12th floors, the ceilings are made of prefabricated reinforced concrete multi-hollow floorings of the "NU" type supported by load-bearing transverse walls Ceilings above the attic Made of multi-hollow flooring of the "UNT" and "RT" types, laid on prefabricated reinforced concrete beams of the "BGU" type with a section of 220 (h) x120 and 300 (b) x120. Interfloor: reinforced concrete slab - 220 mm; coupler - 30 mm; floor structures. Attic: reinforced concrete slab - 220 mm; coupler - 50 mm. The basement floors are dirt. There are areas of dampening of the basement floors due to a malfunction of the sewerage system. Floors 1-12th floors: staircase and lift unit and common areas - ceramic tiles; in apartments: in corridors, rooms and kitchens - linoleum, parquet; bathrooms - ceramic tiles. Chips, cracks and a local absence of ceramic tiles (areas sealed with cement mortar) were found in inter-apartment halls and common areas on an area of ​​up to 20%. There is a single lack of tiles in the bathrooms of the apartments. Parquet floors have cracks, abrasion, local delamination, strong warping. Linoleum floor coverings have abrasion of the surface at the doors, swelling, breaks, lagging of the material at the joints. Balconies from prefabricated reinforced concrete slabs, thicknesses 220mm, cantilevered into the walls. Waterproofing - from roofing material on bituminous mastic. Covering - from a ceramic tile. Steel fences. Screens from asbestos-cement sheets. Stairs - two-flight, from prefabricated reinforced concrete marches and platforms with a hole for passing the trunk of the garbage chute. Fences - steel grating with PVC handrail. The floor coverings are made of ceramic tiles. Reinforced concrete flat, with a warm semi-passage attic space. The roof of the building with an attic space and an organized internal drain. Roofing from the 1st layer of hydrostekloizol and 3 layers of roofing material on bituminous mastic. Drainage - internal organized. Numerous swellings, the formation of "saucers", tears in the roofing. Roof structure - prefabricated reinforced concrete beams of the "BGU" type with a section of 220 (b) x120 and 300 (b) x120 supported by end walls and reinforced concrete columns in the middle part. Fences: a metal fence is arranged around the entire perimeter of the roof. fences. There are air vents in the frieze panels of the outer walls. Access to the attic is carried out from the landings through the doorways. Doors are wooden, sheathed with galvanized metal sheet. Garbage chute - open. It is located on the stairwell with loading valves on the interfloor landings. The garbage chamber is located at the level of the first floor, under the canopy of the entrance to the entrance. The walls of the garbage chamber are 120-150 mm thick, made of facing bricks on a cement-sand mortar, not insulated. The floors of the garbage chamber are located on the same level with the blind area. There is no decoration of the walls of the garbage chamber. The ceilings are whitewashed. The floors are ceramic, there are chips, peeling of individual tiles from the base. There is damage to floors and walls. The tiles are dirty. The entrance doors to the cell are wooden, painted, in poor condition, insulation is required. The garbage chamber in plan has dimensions of 1,5x1,9m. The outer diameter of the trunk is 44 cm. The barrel is made of asbestos cement. There are holes in the trunk, the trunk of the garbage chute is skewed at the joints. The loading valves are damaged, deformed in places and have traces of corrosion. There are no seals. Ventilation of garbage chutes is carried out through the exhaust sections of the shafts. Ventilation deflectors of the garbage chute are installed on the roof of the building, deformed. In the examined building of series II-18-01/12, a single-pipe dead-end heating system was installed with an upper supply and lower return wiring. Heat supply from heat networks according to a dependent scheme. Input of highways 2D=100mm. with a metering station located in the basement of the building. The system has been in operation since the day the building was put into operation. Cast iron radiators are installed as heating devices. The presence of fistulas in the joints of sections, partial non-heating of heating devices. The mains are made of steel black pipes D-100-25 mm., Laid openly in those. underground and attic. There are welded fistulas, external corrosion. Risers and connections are made of steel black pipes D = 20-15 mm., laid open. There are fistulas in the connections, external corrosion of threaded joints. As shut-off and control valves, plug and partially ball valves are installed on the risers, three-way valves are installed on the inlets, and cast-iron gate valves are installed on the mains. Complete breakdown of the armature. The building is equipped with a system of flow-exhaust ventilation with natural impulse. The air from the apartments is removed through the kitchens and bathrooms through individual bypass channels, which are passed through the floor to the collection channels. Prefabricated and individual channels of the upper floors are led out by prefabricated vents. shafts above roof level. The air flow into the apartments is carried out through the vents and leaks in the porches of the window fillings. Ventilation shafts are concrete, 900 mm high with concrete umbrellas. Ventilation grilles with a section of 120x200 mm. Significantly polluted with household dust. Above the san. those cabins are equipped with telescopic air ducts. The presence of leaks and gaps in the seam joints and at the junctions of air ducts with sanitary cabins and exhaust openings in the ventilation units. Individual ducts and prefabricated ducts in double cut concrete ventilation blocks. The system is forced. In the attic, above the elevator shaft, there is a smoke exhaust valve and an exhaust fan with automatic opening from the buttons located in the pockets of the floor corridors. The system has been in operation since the commissioning of the building. The shaft is made of concrete blocks, located hidden, next to the elevator shaft. Floor valves are located on each floor above the elevator car. The system fan is located in the attic and is on standby. The system is forced. In the attic, above the elevator shaft, there is a smoke exhaust valve and an exhaust fan with automatic opening from the buttons located in the pockets of the floor corridors. The system has been in operation since the commissioning of the building. In 2005 the system was upgraded. The shaft is made of concrete blocks, located hidden, next to the elevator shaft. Floor valves are located on each floor above the elevator car. A system of cast-iron socket sewer pipes D=100-50 mm, with outlets to the city network. The system was installed during the construction of the building. Mains from cast-iron socket sewer pipes D=100 mm are laid hidden under the basement floor. Places of corrosion formation and holes in the pipes of the system were identified. The ventilation ducts in the attic are partially destroyed. Risers and outlets are made of cast-iron socket pipes d = 100-50 mm, laid hidden in closed gates and above the floor of bathrooms. Corrosion and weakening of joints, holes and traces of leaks in the joints of the pipeline. In the apartments, overflows and outlets of bathtubs are in poor condition. The building has a hot water supply system with a lower wiring and a circulation line. Water supply is carried out from city networks. Input of highways d=80;50mm, located in those. underground. A flow meter assembly is mounted at the inlet. The system has been in operation since the day the building was put into operation. Distribution lines are made of galvanized steel pipes D=80-32mm. Risers and connections are made of galvanized steel pipes D=32mm (risers), D=15mm (pipes). Risers are laid in a dignity. those cabinets. Insulation - thermoflex. Cold water supply systems The building has a dead-end system with lower distribution of main pipelines combined with a fire-fighting water supply system. The water supply of the system is carried out from the input 2D 80 located in those. underground. ...