Restoration of MKD technical documentation with the help of third parties

• Foundations.
• Walls.
• Coating.
• Roof.
• Roof.
• Network engineering.

1. Measurements of structures and dimensions of premises in a residential building were carried out. The geometric dimensions of the structural elements are determined.
2. The technical condition of the residential building was determined. Based on the tables of VSN 53(r), the physical wear and tear of the building was determined.
3. An analysis of the design features of the building was carried out. The actual strength characteristics of the materials have been determined. The compliance of the completed structures with the requirements of SNiP and GOST was determined.
4. Based on the results of the survey, a report was compiled with conclusions and recommendations based on the survey results.
5. An analysis was carried out of the presence of factors that pose a threat to the life and health of citizens from the erected structure (for compliance with the requirements of the Federal Law of December 30, 2009 N384-FZ “Technical Regulations on the Safety of Buildings and Structures”).

• 5-meter metal measuring tape.
• Laser Rangefinder.
• Crack gauge template.
• Measuring ruler.
• Calipers.
• The object was photographed using a Canon EOS 550D digital camera.
• Ultrasonic concrete tester UKS-MG4
• Moisture meter Testo-606

The inspection work was carried out in accordance with the requirements and recommendations of SP 13-102-2003 “Rules for the inspection of load-bearing building structures of buildings and structures.”

The classification of the technical condition of building structures is given in accordance with GOST R 31937-2011:

Serviceable condition is a category of technical condition of a building structure or a building and structure as a whole, characterized by the absence of defects and damage that affect the reduction of load-bearing capacity and serviceability.

Serviceable condition - a category of technical condition in which some of the numerically assessed controlled parameters do not meet the requirements of the design, norms and standards, but existing violations of the requirements, for example, for deformability, and in reinforced concrete and for crack resistance, under these specific operating conditions do not lead to a violation operability and load-bearing capacity of structures, taking into account the influence of existing defects and damage, is ensured.

Limited operable condition is a category of technical condition of structures in which there are defects and damage that have led to some reduction in load-bearing capacity, but there is no danger of sudden destruction and the functioning of the structure is possible by monitoring its condition, duration and operating conditions.

Emergency condition is a category of technical condition of a structure or building and structure as a whole, characterized by damage and deformations indicating the exhaustion of the load-bearing capacity and the danger of collapse (urgent emergency measures are necessary).

a) weathering of masonry and peeling of plaster mortar

• foundation subsidence;
• deformation of the frame of the extensions;
• deformation of the porches;
• deformation of the floor of the 1st and 2nd floors.

In accordance with Appendix No. 4 of the collection No. 28 “Enlarged indicators of replacement cost”, the existing building corresponds to capital capital group 4.

Distribution of residential and public buildings by capital groups:

Technical condition of the pit

Design solution and technical condition of building structures

Foundations

1.	Foundation design based on survey results.	The shallow foundation of the building is strip, made of FBS concrete blocks, monolithic concrete, and brickwork made of solid clay bricks with cement-sand mortar. The depth of the foundations is 1200 mm from the level of the soil level on the outside of the foundation and there is practically no penetration into the ground on the inside (from the side of the technical underground). There is no basement.
2.	Description of materials: class of concrete, type of brick, type and shape of stone, type of mortar, etc.	Clay brick density p=1800kg/m3 Cement-sand mortar p=1400kg/m3 Heavy concrete p=2500 kg/m3
3.	Horizontal and vertical waterproofing	Horizontal waterproofing was made from 1 layer of roofing material along the top of the foundation strip.
4.	Presence of dampness and capillary moisture.	The humidity of the lower crowns of the log house is 13.2-14%, the humidity of the floor boards is 9.8-12.4%. Increased humidity of wooden structures in the area of ​​leaks due to leaks in the roof of the building.
5.	Information about the foundation soils located at the edge of the foundation.	Loams are moisture-saturated. The foundation soils are heaving.
6.	Defects identified during foundation inspection	Diagonal and vertical cracks of a sedimentary nature in the basement of the extension foundation. Peeling of the plinth lining. Moistening the base masonry, defrosting the brickwork. Curvature of masonry rows in the basement of the extension foundation. Deformation of the furnace foundation. Insufficient foundation depth.
7.	Technical condition and physical wear of the foundation	In accordance with SP 13-102-2003, the technical condition of the foundation under the main volume of the building (log walls) corresponds to a limited serviceable condition. The technical condition of the foundation under the extension corresponds to emergency conditions. In accordance with VSN 53-86(r) Table 3, the physical wear of the foundation under the extension is 60%. The physical wear of the foundation under the main building corresponds to 40%.
8.	Scope of work to eliminate defects	In accordance with Table 3 of VSN 53-86(r), with physical wear and tear of 60%, it is recommended to carry out the following types of work: − strengthening the foundation of the veranda, replacing individual sections of brickwork, installing a 100mm thick reinforced concrete cage around the perimeter of the foundation, reinforced with a mesh of 10mm reinforcement. − restoration of horizontal waterproofing by injection into the horizontal joints of the plinth masonry. − installation of vents in the foundation of the building. − strengthening the furnace foundation with reinforced concrete casing, 100 mm thick. − from the technical underground side, make a soil embankment of sand, ensuring that the foundation is buried into the ground at least 1400 mm. − dismantling porch foundations and installing new ones. − install wall drainage along the perimeter of the building’s foundation with organized drainage of surface water. Requirements for ventilation of technical underground In accordance with SNiP 31-01-2003 9.10. In the external walls of basements, technical undergrounds and cold attics that do not have exhaust ventilation, vents with a total area of ​​at least 1/400 of the floor area of ​​the technical underground or basement should be provided, evenly spaced along the perimeter of the external walls. The area of ​​one vent must be at least 0.05 m2. Calculation of the required number of vents The total floor area under the main volume of the building measuring 6x8m is 48m2. Required number of vents = 0.12m2. Read also:  How to correctly draw a drawing of the facade of a private house? With a vent size of 250x250mm. Area of ​​one vent = 0.0625m2, which corresponds to the recommended value of 0.05m2. The required number of vents will be 0.12/0.0625= 1.92 (2 pcs).

Cracks in the base

Wall construction

1.	Construction of walls and partitions based on survey results.	Walls of the main volume of the building at the 1st floor level Log house. The cladding of the external walls is made of plastic panels (siding). Attic walls and extension walls. Wooden walls. Structurally, the walls are framed and sheathed and consist of wooden crossbars and frame posts, which are sheathed on the inside with boards and on the outside with plastic panels (siding). Porch Frame structure made of racks and wooden crossbars.
2.	Description of materials	Wood with a density of 500 kg/m3
3.	Defects identified during the inspection.	Increased humidity and rotting of log walls and internal cladding due to leaks from the roof of the building. Deformation of the frame of extensions due to uneven settlement of the foundation. Deformation of the frame of the porch walls. Gaps between boards of interior cladding. Humidification of thermal insulation. The construction of the frame partition inside the building was made without taking into account the clearance for the settlement of the crowns of the frame walls of the building, as a result of which the ceiling above the 1st floor is deformed.
4.	Partitions	Wooden frame-cladding partitions.
5.	Waterproofing	1 layer of roofing felt along the top of the foundation strip.
6.	Presence of dampness and capillary moisture.	Traces of dampness and fungus formation on the crowns of the building's frame in places where there are leaks from the roof.
7.	Technical condition and physical wear of the walls.	In accordance with SP 13-102-2003, the technical condition of the log house walls corresponds to limited working condition, in areas of roof leaks - emergency condition. The technical condition of the extension frame corresponds to limited working condition. The technical condition of the porch walls corresponds emergency condition. In accordance with VSN 53-86(r) Table 8, the physical wear and tear of the walls of the log house (the main volume of the building) is 30%. In accordance with Table 7, the physical wear and tear of the extension walls is 60%. Physical wear and tear of the porch walls is 70%.
8.	Technical condition and physical wear of partitions.	In accordance with SP 13-102-2003, the technical condition of the partition corresponds to a limited working condition. In accordance with VSN 53-86(r), the physical wear of partitions is 40%.
9.	Wall finishing	Sheathing with boards (lining). Facing with siding.
10.	Technical condition of finishing coatings	In accordance with VSN 53-86(r), the physical wear of plank cladding is 40%. In accordance with VSN 53-86(r), when wear is 40%, it is necessary to reassemble the skin, in some places up to 50% of the area without adding materials. Exterior decoration made of plastic panels needs repairing up to 50% of the area.
11.	Window units Type Technical condition Physical wear	Wooden window units with double glazing. During the examination the following defects were recorded: Small cracks in the places where the frames meet the walls, wear or cracks in the narthexes. Minor damage to tides. Technical condition : limited operability . In accordance with VSN 53-86(r), the physical wear and tear of window units is 40%. In accordance with VSN 53-86(r), when wear is 40%, repair of bindings is necessary, Read also:  Beautiful cottages and country houses: 69 photos, design ideas, facades, views strengthening joints with overlays, restoring glazing. It is recommended to replace the window units with new ones.
12.	Door blocks Type Technical condition Physical wear	Internal doors are wooden. During the examination the following defects were recorded: the door leaves have sagged or have a poor rebate around the perimeter of the frame, the door frames (blocks) are skewed. Technical condition : limited operability . Physical wear and tear is 40%. In accordance with VSN 53-86(r), when wear is 40%, repair of door leaves and frames is necessary. It is recommended to replace the door blocks with new ones.

The seams between the FBS blocks are not sealed

Roof and roofing of the building

1.	Type and design of the roof of the building.	The roof is of the attic type with an internal attic living space and an attic space. The load-bearing structures of the attic are wooden rafters with a cross-section of 150x50mm. The rafters are lathed with 200-250x20mm boards.
2.	Building covering and roof materials	The rafters and sheathing are made of pine with a density of 500 kg/m3.
3.	Filling.	Thermal insulation made of mineral board and vapor barrier made of black paper.
4.	Defects identified during the inspection.	Roof: weakening of notches and connections due to deformation of the extension structure due to uneven settlement of the foundation. Roof: Destruction of the roof at the junction of the main volume of the building with the extension. Lack of fastening of roofing sheets. Leaks.
5.	Technical condition of rafters, beams, coverings, sheathing.	The technical condition of the rafter system and sheathing corresponds to limited working condition. The technical condition of the thermal insulation and vapor barrier corresponds to an emergency condition , due to moisture in the thermal insulation and breaks in the vapor barrier, as well as exceeding the service life. Replacement required. Physical wear and tear of the roof in accordance with Table 38 is 20%. In accordance with VSN 53-86(r), when wear is 20%, repair of fasteners and joints of wooden parts is necessary. Due to the deformation of the rafter system, it is necessary to strengthen the joints by placing galvanized metal plates on the joints.
6.	Construction and technical condition of the building roof.	The roof of the building is made of ondulin type material. The technical condition of the roof corresponds emergency condition. Physical wear and tear of the roof in accordance with Table 44 VSN 53-86(r) is 80%. It is necessary to install a new roof from lightweight materials (metal tiles) with vapor and thermal insulation from mineral basalt slabs of the “NG” type.

Floor filing. Extension foundation.

Interfloor ceilings

1.	Type and design of building floors.	The ceiling above the technical basement is made with thermal insulation from expanded clay backfill with a thickness of 100-150mm, with a vapor barrier. Wooden flooring made of planks is made along the beams The ceiling decoration is made of planks.
Floor materials	Beams and floor boards made of pine, volumetric weight 500 kg/m3. Backfill with a volumetric weight of 600-800kg/m3.
Floor defects	On the 1st floor, due to leaks from the roof, the joists and floor boards have become rotten. On the 2nd floor, due to the lack of a technological gap between the partition and the floor beams, the joists and floor covering are deformed. On the 2nd floor, at the entrance to the 2nd floor, from the stairs, there is a breakdown in the connections between the beams and the walls.
2.	Technical condition of floors.	The technical condition of the interfloor ceilings, including the 1st and 2nd floors, corresponds limited working condition. On the 1st floor in the place of leaks from the roof - emergency condition. In accordance with VSN 53-96(r), the physical wear of floors is 40%. In accordance with Table 26 of VSN 53-86(r), it is necessary to eliminate cracks and gaps and strengthen the beams in places. In areas where roof leaks occur, physical wear is 80%. In places of leaks, it is necessary to completely replace the joists and floor boards above the technical underground, with the installation of new layers of vapor barrier and thermal insulation. It is recommended to replace the vapor barrier and thermal insulation above the technical underground over the entire floor area. Due to the deformation of the floor above the 1st floor, it is necessary to strengthen the beams in the place of deformation above the partition and to bulkhead the floors on the 2nd floor, leveling the floor level. It is necessary to install support posts under the floor joists at the entrance to the 2nd floor. It is recommended to install a layer of non-combustible basalt mineral slabs in the ceiling of the 2nd floor.
3.	Floor type Physical deterioration	The living areas have plank floors. Taking into account the presence of defects in the form of deflections and subsidence, and sometimes breaks (in quarters) of individual boards, in accordance with Table 51, the physical wear of the plank floor is 60%. In accordance with Table 51, when wear is 60%, it is necessary to carry out repair measures: re-flooring with the addition of new material up to 25% of the floor area, replacing joists in places.

Sedimentary cracks. Destruction of masonry.

Stairs

1.	Type and design of stairs.	Single-flight wooden staircase leading to the attic.
2.	Staircase materials.	Pine with a volumetric weight of 500 kg/m3.
3.	Technical condition of the stairs	The technical condition of the stairs corresponds to working condition . The physical wear and tear of a wooden staircase is 20%.

Deformation of the concrete foundation

Building utilities

Cold water supply

2.	Type and design of cold water supply system	Water is supplied to the system from an individual well.
3.	Piping system	Polypropylene pipes.
4.	Physical wear and tear of the cold water system	Physical wear and tear of the cold water system, in accordance with Table 65, is 20 %. It is recommended to repair the system at the entrance to the building, rebuild the pit with a device for entering the building without a pit, because The pit is a source of stagnation of surface water, which leads to premature wear of the foundation material. Thermal insulation must be installed on the pipelines at the entrance to the building and in the technical underground.

Measuring the strength of concrete

Hot water supply

1.	Type and design of the DHW system	Autonomous hot water supply system.
2.	Piping system	Polypropylene pipes.
3.	Physical wear and tear of the hot water supply system	Physical wear and tear of the hot water supply system is 20%. Partial renovation needed.

Rot damage to the crowns of a log house in the area of ​​roof leaks.

Heating system

1.	Type and design of the heating system.	Autonomous heating system. The heating system equipment consists of 1 heating boiler using liquid fuel. The heating system of the building is made according to an open circuit, with overhead wiring. An expansion tank is installed in the attic. The heating system is introduced on the 1st floor of the building and consists of 2 pipelines - supply and return, on which shut-off valves are installed. The coolant flows to the heating devices through risers from the main pipelines. Steel radiators are used as heating devices.
2.	Pipelines of the system.	Pipelines made of black steel.
3.	Physical wear and tear of the heating system.	Physical wear and tear of the heating system does not exceed 20%. After a period of non-use of the building, it is necessary to check the functionality of the boiler and perform a pressure test of the heating system to check the functionality of the system.

Emergency technical condition of the roof

Sewerage

1.	Type and design of the sewerage system.	Gravity sewer system with septic tank.
2.	Pipelines.	Polypropylene pipes with a diameter of 100mm and 50mm.
3.	Physical wear and tear of the hot water supply system.	Physical wear and tear of the sewerage system is 20%. It is necessary to repair the fastening of sewerage system pipelines to building structures.

Furnace foundation. Deformation.

Electrical system

1.	Electrical system type and design	The building has hidden wiring in a metal corrugated pipe. Due to roof leaks, water may accumulate in the corrugations; in places where building structures are deformed, the wires experience additional tension; the wire sheath has lost its elasticity and is cracked.
2.	Network type	Wires with a cross-section of 1.5 mm2 for lighting and 2.5 mm2 for sockets.
3.	Physical wear and tear of the electrical equipment system	Physical wear and tear of the electrical equipment system is 80 %. It is necessary to replace the power supply system with a new one with open installation in boxes.

Condition of the house facade. Peeling of the plinth lining.

conclusions

Based on the examination of the technical condition and structures of an individual residential building at the address: Moscow region, Ruzsky district, ... the following conclusions can be drawn:

1. The existing residential building is a permanent structure and belongs to capital group 4 and responsibility class 2. The building structures are non-demountable, the building foundations are buried in the ground and are connected to the ground. The load-bearing structures of the building are:

• The foundation is strip made of brickwork.
• Brick walls.
• Wooden roof.
• Wooden floors.

2. Based on the examination of the technical condition of the foundation, roof, roofing and brick walls, we can conclude that these structures need major repairs.

3. As a result of the visual and instrumental examination, signs of a decrease in the strength and stability of load-bearing building structures were recorded in the form of deformation sedimentary cracks in the walls and base of the building.

4. Based on the classification of defects, the load-bearing capacity of the plinth masonry was assessed. The reduction in the bearing capacity of the base, in places where cracks form, will be 75%. Fixed cracks of a sedimentary nature divide the foundation structure into separate volumes and, as a result, the spatial rigidity is disrupted and the stability of the building walls is reduced.

5. The reason for the appearance of cracks in the base is subsidence of the foundations, due to the presence of heaving soils and insufficient depth of the foundations. Currently, the above-ground part of the building is deformed at the junction of the main volume with the attached part. The depth of the foundations, in accordance with the verification calculation, must be at least 1200 mm. For further normal operation, it is necessary to add sandy soil to a height of 1400 mm from the technical underground.

6. To increase the load-bearing capacity and durability of the furnace foundation, the extension foundation and the foundation of the main volume of the building, it is necessary to reinforce the outer side of the foundation with a reinforced concrete frame 150 mm thick. The reinforcement of the cage is made from a mesh with a cell of 200x200mm, consisting of rods with a diameter of 10mm of class A500. Fix the reinforcing mesh in the existing foundation structure with horizontal rods with a diameter of 10 mm, with a pitch of 600 mm, in a checkerboard pattern using chemical anchors. The concrete grade of the cage should be class B25. Fill the joints between the FBS blocks with a mortar of NTs brand cement by injecting the mortar into the masonry. Replace areas with deformed brickwork of the basement with new ones (photos No. 1, No. 2).

7. To stabilize moisture in the foundation structure, it is recommended to install wall drainage from plastic pipes below the base of the foundation, with organized removal of surface water from the foundation through a drainage well. Drainage pipes (drains) should be laid below the edge of the monolithic grillage at a depth of at least 300 mm. The backfill should be made of medium-sized sand with layer-by-layer compaction up to Kp=0.95.

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8. The building’s blind area and drainage system do not provide normal drainage from the building’s foundations. When performing major repairs, it is necessary to take the following measures to organize drainage from the foundations of the building:

• Install drainpipes and eaves trays on the roof of the building.
• Combine drainpipes and blind areas into a single system by installing storm drainage.

Due to the exceeding of the service life of the horizontal waterproofing material, it is recommended that when carrying out major repairs of walls, install horizontal cut-off waterproofing under the walls of the main volume of the building. Waterproofing is carried out by injecting polymer waterproofing compounds such as “Lakhta penetrating” or “Penetron” into 2 rows of the brickwork of the base.

9. The wood of the lower crowns of the frame, lining and rough floor boards has an increased moisture content of the boards exceeding the standard value established in SP 28.13330.2012.

10. The reason for the increased humidity of the wall and ceiling materials above the technical underground is the following factors:

• Insufficient ventilation of the technical underground.
• Capillary suction of moisture from the soil and insufficient number of layers of horizontal waterproofing.
• The emergency condition of the blind area and the unorganized vertical layout contribute to the penetration and accumulation of surface water and water of the “overwater” type in the technical underground.
• Roof leaks.

11. It is necessary to carry out additional treatment of the floor beams and the lining along the beams with bioprotective compounds. In accordance with SP 28.13330.2012, the following compositions must be used to protect wood:

• Impregnating water-borne acrylic and acrylic-alkyd with a composition consumption of 120-150g/m2.
• Impregnating organic alkyd, with a composition consumption of 120-150g/m2.
• Film-forming compositions are water-soluble, with a composition consumption of 150-200 g/m2.

12. Treat the wood of the floor above the technical underground with fire retardant compounds.

13. Due to roof leaks, the wood of the floor joists of the 1st floor are susceptible to biological damage. It is necessary to replace the floor joists of the 1st floor in the area of ​​leaks. Based on the results of verification calculations of the thermal insulation of the 1st floor floor, made of expanded clay gravel, it was established that the heat transfer resistance is insufficient for normal operation. To eliminate additional moisture build-up in the floor materials above the technical underground, it is recommended to replace the existing bulk thermal insulation and vapor barrier with a new one made of mineral wool basalt slabs with a thickness of at least 100 mm. The following materials can be used as a vapor barrier: waterproofing film ISOSPAN-AM in one layer along the sheathing and joists. For thermal insulation, vapor barrier film ISOSPAN - V.

14. The technical condition of the thermal insulation of the attic and extension is emergency, due to high humidity. During major repairs, it is recommended to install new thermal insulation from a mineral slab with a thickness of at least 100 mm and install a new vapor barrier.

15. The technical condition of the frame crowns in places of leaks from the roof corresponds to an emergency condition. Replacement is required. Due to uneven settlement of the foundation and deformations of building structures, the following structures must be strengthened:

• veranda frame at the connection points of the elements;
• rafter system at connection points;
• floor beams above the 1st floor.

16. The technical condition of the roof corresponds to emergency conditions. The roof needs replacement.

17. The building is equipped with autonomous heating systems, hot water supply, a common cold water supply system and a sewerage system.

18. The building is also powered from the general electrical network; an ASU panel is installed at the entrance to the building. The building has hidden wiring in a metal corrugated pipe. Due to roof leaks, water may accumulate in the corrugations; in places where building structures are deformed, the wires experience additional tension; the wire sheath has lost its elasticity and is cracked. Physical wear and tear of the electrical equipment system is 80%. It is necessary to replace the power supply system with a new one with open installation in boxes.

19. The hot water and cold water system is made of polypropylene pipes. It is recommended to repair the system at the entrance to the building, rebuild the pit with a device for entering the building without a pit, because The pit is a source of stagnation of surface water, which leads to premature wear of the foundation material. Thermal insulation must be installed on the pipelines at the entrance to the building and in the technical underground.

20. Physical wear and tear of the heating system does not exceed 20%. After a period of non-use of the building, it is necessary to check the functionality of the boiler and perform a pressure test of the heating system to check the functionality of the system.

21. The technical condition of the porches is emergency. The structures need to be dismantled.