Center of expertise "Rosobshchemash"
Carries out a survey of all engineering systems of buildings and structures: ventilation, air conditioning, sanitation, water supply, fire protection systems, low-voltage systems, power supply and others
Inspection of engineering systems: tasks, stages and cost of the procedure
Examination of engineering communications is one of the most popular types of building studies. According to its results, the correspondence of the object is revealed:
- security requirements;
- State standards and technical regulations;
- Organizational standards;
- town planning plan;
- Estimate-normative base.
Regular examination of engineering systems can significantly reduce the risk of emergencies, leaks, and, as a result, minimize cash costs, since the cost of eliminating the consequences of floods, fires and other emergencies on engineering systems is many times higher than the cost of surveys and maintenance.
The cost of the examination of engineering communications depends on the area of the building, the type of systems, the amount of work of the same type.
Examination should be trusted only to specialized organizations.
Expertise of engineering communications is a complex service that is often required in the construction, operation of buildings or structures, as well as in commercial real estate transactions. The cost and possibilities of normal operation of the facility directly depend on the efficiency of engineering communications.
Inspection of engineering communications requires the involvement of qualified experts who will carry out all the necessary tests and calculations, make a conclusion and provide recommendations for troubleshooting. A properly executed expert opinion, if necessary, can be presented in court.
Survey objectives
Examination of engineering networks allows you to save financial and time resources for their installation, maintenance and overhaul, as well as to prevent a sudden failure of the engineering network.
The review answers the following questions:
What is the state of the engineering networks at the time of the survey?
Does the surveyed equipment comply with the technical documentation?
What needs to be done for the further proper functioning of the engineering network?
Reasons for holding
Engineering expertise is required in the following cases:
Disputes with a contractor regarding estimates, deadlines, equipment for laying and maintaining engineering networks.
The occurrence of failures, emergencies and accidents (most often in heating and water supply).
Commissioning, commissioning of networks.
Assessment of the state of engineering networks in commercial real estate transactions or calculation of repair estimates.
Authorized organizations
Examination of engineering systems should be carried out by specialized expert organizations. Under the contract for the examination, the customer undertakes to provide the necessary documents within the specified period, and the contractor undertakes to monitor the completeness of the documentation provided and ensure that the examination is carried out in accordance with applicable standards and within the specified time. The terms of reference and estimate are attached to the contract.
Objects of study
The objects of a comprehensive study are external and internal engineering systems. Inspection of the condition of any engineering equipment must comply with the requirements of GOST R 31937-2011 “Buildings and structures. Rules for the inspection and monitoring of the technical condition.
Power supply. During the examination, compliance with the technical specifications and compliance with the project is checked, the network load is calculated, and the correct choice of protection devices is determined. For the examination of power supply, a large amount of equipment is usually required. The standards for power supply systems are contained in SP 134.13330.2012 “Electrocommunication systems for buildings and structures. Basic Design Provisions” and SP 76.13330.2012 “Electrical Devices”.
Water supply. The examination includes visual inspection and non-destructive instrumental examination. The technical characteristics of the system, the general nature of operation, limit loads should be studied. The inspection report should indicate specific actions to prevent the failure of the water supply system. The system must comply with SP 31.13330.2012 “Water supply. External networks and structures”.
Water disposal. The examination is aimed at identifying and eliminating the resulting damage and blockages. The most effective television survey in order to find problem areas. The system must comply with the requirements of SP 32.13330.2012 “Sewerage. External networks and structures”.
Heat supply. Inspection of heat networks is carried out in order to check their serviceability and set the optimal mode of heat supply to buildings. Heat networks must comply with SP 124.13330.2012 "Heat networks".
Water heating. Examination of water heating includes checking the performance of the system at a pressure exceeding the operating pressure by 1.5 times, but not less than 0.6 MPa, in accordance with SP 60.13330.2012 "Heating, ventilation and air conditioning". The main purpose of the examination of water heating is to prevent the possibility of accidents.
air heating. In the examination of air heating, in addition to diagnosing the performance of the system, an important role is played by the study of aerodynamics in the network of blowers. The system must comply with SP 60.13330.2012.
Ventilation. The examination is carried out with the help of multimeters, noise meters and video equipment. As a result, a conclusion is given on the state of ventilation, the reasons for its inefficient operation, and the quality of air purification. The system must comply with the standards of SP 60.13330.2012.
Air conditioning and refrigeration. As a result of the examination, conclusions are drawn about the efficiency and safety of the system, and recommendations are made to improve them. The air conditioning system must comply with SP 60.13330.2012.
Communication networks. The examination includes checking the availability of all necessary components and cables, their performance and the efficiency of the system as a whole. Communication devices must comply with VSN 60-89 "Communication devices for signaling and dispatching engineering equipment of residential and public buildings Design Standards".
Automation and dispatching systems(including fire safety systems). Examination reveals the operability and efficiency of systems. Automation and dispatching systems must comply with VSN 60-89.
Stages of inspection of engineering communications of buildings:
Analysis of technical documentation. Allows you to determine the initial data: the timing of construction and operation, the location of communications and terminal equipment, the results of previous examinations. Working and as-built drawings, acceptance and test certificates, passports and certificates for equipment, repair logs are subject to analysis.
Visual inspection. At this stage, an initial inspection of the systems is carried out to determine obvious malfunctions and the need to use special equipment.
Instrumental examination. The stage of instrumental examination provides numerical data for the analysis of system performance. It includes the measurement of linear dimensions, the identification of deformations, defects and damage, the collection of data on loads and / or costs.
Result analysis in. Based on the analysis, the degree and causes of physical deterioration of engineering communications are revealed, conclusions are drawn about the technical feasibility of using existing systems.
Drawing up a list of defects. The task of this stage is to compile a complete list of damaged and / or worn parts of engineering systems that must be replaced.
Drawing up a technical report. It includes:
description of the scope and timing of the performed expert work;
date and time of commencement and completion of work;
place of inspection and research;
a description of what was found during the inspection;
a list and a brief description of the design solutions of the surveyed systems, analysis of the regulatory framework for the period of construction of the surveyed object;
information on the operating conditions of engineering networks, the organization of their current and major repairs;
results of visual and instrumental examination;
numerical data on the degree of wear; the alleged causes of the appearance and development of defects;
conclusions about the need to repair (replace) individual elements or parts of engineering networks;
assessment of the scope of work to eliminate specific defects, as a percentage of their total volume for a given facility;
conclusion on the technical feasibility of using existing systems (or conclusion on other issues raised by the customer).
Appendices to the technical report:
a copy of the terms of reference for examination;
list of defects;
documents on the quality of materials (certificates, etc.) - if this was raised by the customer;
the results of laboratory tests and verification calculations - if this was raised by the customer;
copies of documents (official correspondence, protocols, acts and conclusions of previous examinations) related to the state of engineering networks;
— photographic materials and other illustrative materials;
Volumes and terms of work
The terms in which the examination is carried out are determined by the terms of reference and the list of works that are agreed with the customer and are an integral part of the contract. Turning to an expert organization, on average, you can focus on the following terms:
Holding inspection - 2 working days, analysis of the results and available documents examination and issuance of an expert opinion - from 3 to 21 business days from the date of payment for services. Specific terms of work are determined depending on the specific facility and the number and complexity of the systems available at the facility.
You can examine both individual systems and all systems of the object.
The cost of surveying engineering systems
During the initial assessment of the cost of surveying engineering systems, the base prices are multiplied by correction factors that depend on: the type of engineering system; volume of the building; number of similar jobs. The final cost may be affected by technical data that has revealed the need for expensive tools and examination methods.
Where can I order an inspection of engineering systems?
Examination of engineering systems is necessary before the reconstruction or major repairs of buildings. This work can be entrusted only to experts whose qualifications are documented. Specialists will determine the suitability of engineering systems for further use, establish the need for their improvement or repair, and provide written recommendations.
Instrumental study of engineering systems is an important part of the work of experts. It helps to identify damage and defects, avoid accidents, restore the required temperature and humidity in the building, and optimize energy consumption.
EXPERTS OPINION: The full and effective functioning of engineering systems requires a scheduled, and in some cases, an unscheduled survey. The success of possible judicial or out-of-court disputes with contractors, commissioning and commissioning of networks, prevention of failures in the operation of engineering systems, and the accuracy of calculating estimates during repair work also depend on the quality and timing of its implementation, the correct execution of the necessary documents. Due to the specifics and complexity of the inspection of engineering systems, you should always contact only organizations with experience in carrying out complex work.
1. We conduct a survey of engineering systems in the following scope:
- Inspection of hot water supply systems - description of the DHW system, inspection of pipelines and circulation pumps, description of the technology for preparing hot water and the water heaters used, instrumental measurements - temperature measurements, determination of the thickness of corrosion deposits. Development of drawings with the application of pipelines and wiring of the hot water supply system on floor plans, indicating the diameters and linking to existing structures.
- Inspection of heating and heat supply systems - inspection of the heat input and central heating, description of the heating system and the layout of the supply and return lines, inspection of heating devices, taking temperature measurements, determining the thickness of the narrowing of the living section of pipelines, drawing the heating system on floor plans.
- Inspection of cold water supply systems - examination of the water supply to the building, examination of the cold water metering unit and instrumentation, description of the water supply system, determination of the thickness of corrosion deposits in pipelines, drawing the cold water supply system on plans with diameters indicated.
- Inspection of sewerage systems - inspection of pipelines and sanitary appliances, inspection of ventilation risers and revisions, determination of the slope of horizontal pipelines, drawing sewer risers and appliances on floor plans.
- Examination of ventilation systems - determination of the type of ventilation system, examination of ventilation ducts and ventilation equipment, determination of air exchange in the examined premises of the building, identification of defects and comparison with regulatory requirements.
- Examination of waste disposal systems - examination of waste collection chambers, establishing the integrity and tightness of the shaft, establishing compliance with the requirements of design and regulatory documentation.
- Inspection of gas supply systems - description of the structural diagram of the gas supply system, study of documentation for gas pipelines and equipment, determination of the compliance of the gas pipeline system with design documentation.
- Examination of the technical condition of drains - a description of the drainage system, reveals unacceptable damage - blockages, tightness of joints, the presence of gratings and caps, the presence of an electric heating cable.
- Inspection of electrical networks and means of communication - description of the input-distributing device, inspection of electrical cabinets on floors, inspection of lighting fixtures, inspection of low-voltage systems, drawing electrical panels and power supply wiring on building plans.
- Inspection of engineering equipment - the actual condition of the used equipment for various purposes is determined. Physical and moral wear and tear is determined in accordance with the identified defects and malfunctions.
2. The composition of the technical report on the inspection of engineering systems and networks
1. Explanatory note - description of the surveyed engineering systems
2. Inspection of heating and heat supply systems of the building
- description of heating and heat supply systems
- drawing heating systems on floor plans
- instrumental examination of heating and heat supply systems, defects, conclusions and recommendations
3. Inspection of building ventilation systems
- description of ventilation systems
- drawing ventilation systems on floor plans
- instrumental examination of ventilation systems, defects, conclusions and recommendations
4. Inspection of water supply and fire extinguishing systems of the building
- description of water supply and fire extinguishing systems
- drawing water supply and fire extinguishing systems on floor plans
- instrumental examination of water supply and fire extinguishing systems, defects, conclusions and recommendations
5. Inspection of the building's drainage systems
- description of drainage systems
- drawing drainage systems on floor plans
- instrumental examination of drainage systems, defects, conclusions and recommendations
6. Inspection of building electrical systems
- description of power supply systems
- drawing power supply systems on floor plans
- instrumental inspection of power supply systems, defects, conclusions and recommendations
7. Results of calculations of existing loads on the building, analysis of input nodes for the possibility of increasing loads, identification of places for possible connections of new networks
8. Conclusions based on the results of the inspection of engineering systems of the building
10. Executive schemes - plans with applied engineering systems
In the case when a real estate object is acquired, as well as during its reconstruction, a conclusion on the technical condition of the building and communications, drawn up based on the results of the work, during which an inspection of engineering networks and building structures was carried out, becomes one of the main documents that allow assessing the possibility of stable operation of the object real estate in the new conditions.
Are surveys really necessary?
Any building requires a periodic survey of communications, both external and internal. The need for such work is caused by the deterioration of networks, and if the maintenance services do not constantly monitor their condition, then an emergency situation may occur, leading to material damage. Equally important is a comprehensive survey of structures and networks at the stage of assessing the cost of the purchased object. If external communications and internal networks are in good condition and fit for use as intended by the new owner, then the value of the property has one value. If, after the purchase, it is necessary to shift or repair networks, reconstruct the life support systems of the building, then these costs should be taken into account when determining the final cost of the purchase. For more than a year now, the conclusions made by Expertsystem based on the results of surveys have made it possible to determine the optimal cost of the object for both parties.
In the case of a building reconstruction, a survey of building structures and networks is mandatory. The conclusion about this work is one of the main documents in the list of initial data for design. In addition, the results of the work during which the survey of engineering systems and building structures was carried out, drawn up in the form of a report, become a document on the basis of which the examination bodies evaluate the correctness of the decisions laid down in the project, on their compliance with the requirements of current standards and issue a conclusion on the suitability of the documentation to implementation. And the conclusion of the examination, in turn, is necessary to obtain a permit for the construction and reconstruction of a property. It should be noted here that the reports on technical surveys performed by the Expertsystem company are always accepted by the examination bodies without comments.
Inspection of engineering networks is the key to the operability of building life support systems
To assess the condition of the property, a technical examination of the engineering networks of the building and building structures is carried out, which is stipulated when the customer draws up the assignment for work and is taken into account by the contractor when developing the survey program. When determining the operability of engineering networks of a building, Expertsystem performs the following work:
- visual and instrumental inspection of pipelines for water and heat supply, sewerage, steam and gas pipelines that provide the property with these types of energy resources. Examination of external networks is carried out from the point of insertion into the backbone networks specified in the act of dividing the boundaries between the energy supplier and the owner of the property, to the point where the network enters the building;
- inspection of the water supply system, when the compliance of the pipe diameters with the executive documentation, the presence and condition of the valves, the safety of the structures of the wells are checked. When examining internal networks of cold water supply, the state of piping, the performance of shut-off valves, and the presence of flow meters are recorded. The technical report must indicate the presence, location and serviceability of fire hydrants, as well as the completeness of fire hydrants inside the building and the operability of the fire water supply;
- sewer inspection, during which the condition of inspection, control and overflow wells, trays is determined, the diameter and material of pipes are fixed, the presence or absence of counterslopes between wells is checked. Internal sewerage is checked to determine the degree of sealing of pipe joints and the safety of sewage receivers;
- inspection of ventilation and air conditioning systems, which determines the degree of wear and contamination of air ducts, the reliability of ventilation equipment, the reliability of thermal insulation of air intake places for supply ventilation, the safety of louvered grilles and deflectors. The safety and operability of the fire smoke exhaust system is checked;
- inspection of electrical networks, when the operability of the power supply line of the facility is checked from transformer substations, where cables are connected (if there are two or more inputs) to the input distribution devices inside the building, the characteristics of the cable are recorded. Inside the building, the brands of wires and cables, the brands and serviceability of power shields and lighting shields, and the safety of terminal devices are determined. The presence or absence of a ground loop is also noted.
A full survey of engineering systems is a rather labor-intensive work and requires highly qualified performers. But the results and recommendations obtained will make it possible to specifically determine the amount of costs necessary to bring the engineering networks of the property to a state that guarantees the safe operation of the building and the absence of claims from supervisory authorities. Exactly this kind of work is offered by the company "Expertsystem", which employs high-level specialists who use modern instruments and software during examinations.
Inspection of building structures - checking the reliability of the building
Simultaneously with the determination of the state of engineering networks, a survey of the structures of the building or structure is carried out, based on the results of which a conclusion is made about the state of individual structural elements, and recommendations are issued on ways to eliminate the identified deviations from the normative indicators. Depending on the scope of work provided for by the task, the following is performed:
- survey of the foundations with the determination of the depth of their laying, the dimensions of the sole, and, if necessary, the pits are opened, and the condition of the foundation soils is checked. Most often, simultaneously with the foundations, a basement survey is carried out, when the safety of the walls, the tightness of the entry points of engineering communications into the building, the design and safety of the floors are fixed;
- examination of columns, crossbars, beams, floor slabs, during which their actual dimensions are measured, if necessary, the reinforcement of structures and the strength of concrete are determined by non-destructive methods, on the basis of which a conclusion is made about the possibility of transferring additional load to the frame elements (during the reconstruction of the building) and the suitability of the elements frame for further use. Measurements of the support values of structural elements are also made in order to finally give recommendations for their increase;
- mandatory instrumental examination of the metal structures of the building frame. During these works, the absence of damage to the elements is checked, deflections are measured, and the state of anti-corrosion protection is determined. The supporting units of the structures are inspected, while the presence, number and diameter of bolts, nuts and washers or the length and leg of welds are recorded. Based on the results of the stage of work, when the inspection of metal structures was carried out, the report proposes measures to correct the identified shortcomings, including the necessary reinforcement sketches. The results of visual and instrumental surveys are taken into account when developing design solutions for load-bearing steel structures of reconstructed buildings;
- inspection of the walls, when the thickness and material of the fence are checked, if necessary, samples are taken to determine the thermal characteristics of the structures and their compliance with energy saving requirements. The quality of the panel joints and the condition of the sealing materials are checked.
- inspection of the roof of civil buildings with attics, during which the condition of the truss structures and their places of support, the integrity and presence of fastening elements of roofing materials with a pitched roof, the safety of gutters and pipes, the quality of the attic floor insulation are examined. With a flat or low-slope coating, the roof inspection consists in assessing the condition of the rolled carpet, as well as determining the physical and mechanical characteristics of the existing insulation. This stage also serves as the basis for the development of measures to improve the energy efficiency of the building.
Who can be trusted to conduct surveys
A comprehensive survey of engineering systems and building structures is a very complex and responsible work, when an error can lead to quite serious consequences. Therefore, enterprises providing services of this profile must necessarily have a permit from a self-regulatory organization confirming the availability of qualified personnel, as well as the necessary material base. There is such a tolerance and the company "Expertsystem".
The Expertsystem company has been performing inspections of buildings and structures in Moscow and the Moscow Region for several years, and each time the reports made by the company's specialists received positive reviews from the expert bodies, and the assessment of the condition of the property became the basis for determining the fair price for the building or structure.
