Requirements for the dismantling of rubberized metal structures. What is the dismantling of steel structures? Types of dismantling of metal structures

Great attention is paid to the quality of work on the installation of metal structures, since the degree of safety of the facility during operation depends on them. However, the dismantling of technological, temporary or metal structures that have served their warranty period requires no less attention. As a rule, dismantling is carried out by the same organizations that once installed the building or equipment. This is quite justified, since it is much easier for specialists who carried out the assembly to dismantle these metal structures.

If earlier the need to dismantle large metal structures did not arise often, today the vast majority of industrial buildings, lifting mechanisms and obsolete technological equipment need to be replaced. There are three main methods of dismantling:

• Equipment is cut for scrap metal. As a rule, these are used chemical equipment or rusted structures of workshops and hangars;
• The equipment is cut to make room for more modern installation, but a significant part of the metal structures is planned to be reused in non-critical areas;
• The equipment is dismantled for subsequent installation and use at a new location.

Regardless of the purpose of dismantling, metal structures should be dealt with in a carefully designed plan. The most time-consuming and costly is the dismantling of equipment to move it to a new location. With this method, cutters are practically not used, and the assembly team tries to dismantle all easily removable elements in order with minimal damage, carefully numbering and packing them. Then, with the help of various lifting mechanisms, large-sized elements are disassembled.

The only elements that are cut off with this dismantling method are various ladders and non-removable protection elements, since they are cheaper to weld in a new place. Most often, various crane equipment, process tanks and various auxiliary structures are dismantled in this mode.

If the customer wishes to keep a part of the metal structures as a material for further use, he must, together with a representative of the installation organization, draw up a list of the material to be left. During dismantling, disassembly can be carried out in many ways, so employees, if possible, will cut the metal to the specified dimensions.

With the complete dismantling of a building or process equipment in order to turn it into scrap metal, the main task is to ensure the safety of workers and the maximum speed of work. Despite the seeming simplicity of dismantling buildings and large-sized technological equipment, this work can only be performed by specialists, since it is impossible to predict how multi-ton equipment that has served its time will behave during disassembly.

Dismantling of metal structures, the so-called dismantling of metal structures for subsequent reinstallation and demolition for scrap metal are procedures that require a different approach. So in the first case, care is needed when disassembling so that the elements of the structure are not damaged. When dismantling metal structures for further use, the price for the work will be an order of magnitude higher than in the situation with scrap metal. Also in the second case, it is possible to partially pay for the dismantling of metal structures with the received piles of metal.

However, regardless of the future fate of the building, there are similar requirements for demolition:

• A large number of tools and machines are required;
• A draft and contractual agreement between the parties must be drawn up;
• It will require a workforce - experienced employees specializing in this field.

You can find out how much the dismantling of metal structures costs per ton in a professional company by contacting specialists. Please note that the price may depend on the degree of deterioration of the building, on the timing and complexity of the task. Also, any self-respecting company has a price list for the dismantling of metal structures, where the price is indicated for 1 ton of scrap metal received.

Dismantling of metal structures for demolition

If the customer does not need the rest of the metal, then it would be more rational to agree with the company on the demolition and purchase of scrap metal. So the owner of the building will receive not only freed space, but also a lower cost of dismantling metal structures due to the delivery of scrap.

Buildings for demolition are classified into the following types:

• Type of structure: , bridge, cisterns, advertising billboards, and so on.
• Fire hazardous or not;
• Height: so lifting machines are not needed to eliminate a small iron shed, however, to demolish several floors, cranes will have to be involved.
• Connections: buildings can consist of profiled sheets, fixed by welding or screw parts.
• Proximity to other objects.

The price for 1 ton during the dismantling of metal structures depends on the specified classification parameters. The method of dismantling unrepairable vehicles and agricultural machines will be the same as when working with welded metal structures: gas cutting or a plasma cutter is used here. The use of tools for such cutting requires specialized education - do not do gas cutting yourself! It is life threatening and will not do any good. It is better to entrust such a thing to a professional company.

Dismantling of metal structures and main types of work

When working with high-rise buildings, the company involves forklifts, cranes and special workers - high-rise workers - since in this case a phased dismantling of the building is required, starting from the upper floors. The procedure is carried out especially carefully if there are other buildings near the unusable building that cannot be damaged. Also applicable are technical devices operating on the principle of hydraulics: mounted hydraulic shears and lifts. The parts of the building taken from a height are cut already on the ground, a grinder saw or a gas cutter is used. For especially massive metal elements, a diamond wire saw is used. The cost of dismantling metal structures per 1 ton using sophisticated equipment becomes higher, but this method is a guarantee of high quality and prompt work.

Rarely - if the passport and the location of the building allow - blasting is used. The procedure itself is carried out as quickly as possible, but the preparation of the necessary documentation and the collection of permits may require much more time.

After the demolition, the removal of the resulting scrap metal is organized. This requires a workforce: drivers, riggers, loaders for garbage removal. Specialized transport is hired, for example:

• Length gauges - for transportation of small-sized scrap;
• Hydraulic manipulator;
• Cranes, excavators and sometimes even a tractor.

The cost of dismantling steel structures

The price for the dismantling of metal structures includes all the work carried out, including the equipment involved, the wages of laborers and drivers, cleaners and documentation specialists. So, depending on the value of the scrap received, the payment can be as follows:

• Financial calculation - scrap remains with the customer;
• Payment exclusively with the received metal - if the quantity and quality of scrap pays for the efforts expended on the part of the company;
• The combined option is the most optimal for both parties and is most often used.

We recommend that you contact a professional organization for the demolition of structures. Prices for the dismantling of metal structures will be an order of magnitude lower than when contacting private traders or independently renting equipment and ordering garbage collection, since the services are provided by the complex and most often the received scrap is accepted as part of the payment.

Scrap metal cutting. Dismantling of metal pipes, hangars, factory equipment, etc.

Dismantling of metal structures for assembly at a new location, packaging of metal structure elements. Rigging work.

We dismantled various metal structures: hangars, factory floors, metal pipes, advertising structures. Each design requires an individual approach. Dismantling is a responsible task. It is necessary not only to carefully disassemble the structure, not to destroy or damage nearby structures, but also to prepare structural elements for convenient transportation. All demolition work must be properly planned. The supporting structures, the main frame are dismantled at the very end. First, the casing and parts attached to the supporting structures are dismantled. That is, it is necessary to dismantle everything that can be carefully dismantled, leaving only the supporting frame. Then you can dismantle the entire supporting structure, or remove it in parts from top to bottom. Sometimes lifting equipment may be required. Each case of dismantling work must be planned individually. It is not known how firmly the dismantled structure holds. Fasteners on metal structures may “loose” during operation. Therefore, each removed part of the metal structure must be additionally insured.

Dismantling of metal structures and cutting into parts for convenient transportation and delivery of scrap metal.

Dismantling of metal structures may be required for various reasons. For example, the re-profiling of production. Or moving production. Very often it is necessary to make a partial dismantling of metal structures for redevelopment of premises. In this case, it is important to correctly develop the procedure for the process of dismantling the metal structure so as not to damage the load-bearing elements of the metal structure or to replace them if necessary. We will undertake to carry out the most technologically complex dismantling. There are times when it is necessary to make a partial dismantling of metal structures. That is, for the reconstruction of the structure. Sometimes dismantling must be carried out at a height. In this case, you will need an aerial platform, or a tour. Or the dismantling of metal structures will be performed by industrial climbers.

Dismantling of metal structures price per ton.

Dismantling (demolition) of metal structures - from 1500 rubles. for 1 ton.

Cutting metal structures into parts - from 1500 rubles. for 1 ton.

Cleaning and garbage disposal - from 1500 rubles per 1 ton.

Prices for special equipment.

Manipulator - 10,000 rubles. for a shift.

Aerial platform - 10000 rub. for a shift.

Truck crane - from 15000 rubles. for a shift.

Purchase of scrap metal - 3000 rubles. - 7000 rub. per ton.

What is the cost of dismantling a metal structure.

Initially, the cost of cutting a metal structure during dismantling is 1500 rubles. per ton. Then, various factors must be taken into account.
1. The height of the metal structure. Or the height of the dismantled metal structure. The higher the dismantled metal structure is located, the more difficult it is to carry out dismantling work.
2. Finding nearby foreign objects. For example, there may be buildings, a roadway, parked cars, etc. very close to a metal structure being dismantled, which makes dismantling work difficult.
3. Inaccessibility. Sometimes access to the dismantled metal structure is very difficult. For example, we dismantled pipes in the factory workshop, which were located under the ceiling of the workshop in a narrow niche. And lifting equipment could not be placed anywhere. It was necessary to build structures on the ceiling of the workshop for hanging them and lowering the dismantled metal.
4. Use of special equipment. Truck cranes, aerial platforms, manipulators, etc.
5. Recycling and removal of construction debris.

Dismantling of prefabricated metal structures.

The dismantling of hangars, warehouses and other prefabricated metal structures is carried out mainly for assembly at a new location. When carrying out the dismantling of metal structures of this type, it is necessary to dismantle the metal structure manually so as not to damage the attachment points. In the process of disassembly, the parts of the metal structure are carefully packed. When assembling at a new location, it is possible to carry out anti-corrosion treatment of metal structures, i.e. primed and painted all parts.

Often when dismantling metal structures, it is necessary to “dump” the metal structure to the right place without damaging other structures and structures. In this case, the participation of special equipment is necessary. Cranes, manipulators. Sometimes in urban conditions it is necessary to dismantle an advertising metal structure from the roof of a building. In this case, a crane is needed. The metal structure is removed in large sections with a crane and cut into small pieces for transportation on the ground. But it happens that around the house from which the metal structure is being dismantled, it is impossible to place a crane. Then the cutting of metal structures has to be done on the roof in compliance with all fire safety measures and lowering small parts of the metal structure to the ground for subsequent transportation. It is more dangerous and more difficult to dismantle a metal structure without special equipment.

We carried out complex dismantling of metal structures, which other companies did not undertake.

Dismantling of metal structures should be carried out in stages. It is necessary to think over and develop the stages of dismantling the metal structure. Dismantling of metal structures is a type of activity of increased danger. To evaluate the dismantling of metal structures, it is necessary to see the object. For a preliminary estimate of the cost of dismantling a metal structure, you can send a photo of the object. Very often, the dismantling of metal structures for one reason or another is more difficult than the installation of the same metal structure. The dismantling of the foundation of metal structures is often associated with earthworks, special equipment is required. Permits are required for many works on the dismantling of metal structures in the city. Sometimes the dismantling of a metal structure must be done carefully with the preservation of all elements of the metal structure, for example, for the subsequent installation of this metal structure in another place. If at the same time the metal structure has a large height, in such cases, industrial climbers perform dismantling work. Step by step, the elements of the metal structure are dismantled and lowered to the ground for packaging and transportation. Finally, the area is cleaned up. If the metal structure consists of a large amount of metal and the customer does not need the structure in the future, we cut the metal into the parts necessary in size for scrapping the metal. In this case, the cost of scrap metal is deducted from the cost of dismantling the metal structures.

Complex dismantling of metal structures.

Very often it is necessary to dismantle metal structures in combination with other works. For example, during the construction of a building or when repairing a facade within the city, it is necessary to enclose the construction area. It is required to comply with all building safety standards. The facade being repaired or under construction is covered with a metal structure or scaffolding. Outside, a construction or advertising mesh is stretched over the metal structure in order to pollute the city less with construction dust. On the lower floors, a deaf metal structure is made from a metal frame and profiled sheet in order to avoid construction debris falling on passers-by and cars. At the bottom, a pedestrian crossing is also made of a metal frame or a wooden frame and a profiled sheet. And the roadway is fenced with concrete blocks. At the completion of the construction of the building or the repair of the facade, all these auxiliary structures must be carefully dismantled. Dismantling of metal structures is carried out using a truck crane and aerial platform. It is necessary to cut off large fragments of the metal structure and lower them to the ground with a crane. On the ground, cut into pieces for disposal or further use. All parts of the metal structure, concrete blocks, construction waste are removed as the structure is dismantled. Complex dismantling works of this type must be carried out at night in order not to impede urban traffic.

The mechanism for the production of dismantling work must be debugged "like a clock". Dismantling of metal structures, cleaning of the territory, loading and removal - all these works must be professionally organized.

Dismantling of the railroad tracks. In the realities of our time, the industrialization of the territory is taking place. Various production facilities and warehouse complexes are being built. For the normal functioning of which transport accessibility is necessary. Our company is ready to offer services for the construction of railroad tracks and turnouts. We are also ready to dismantle the railway track and turnouts. We have all the necessary equipment to assemble and dismantle sleepers and rails according to the required standards.

Demolition of buildings, interior partitions.

If it is necessary to redevelop the building, it is necessary to qualitatively and accurately dismantle partitions, walls or other structures. In this type of dismantling, as well as in others, it is important not to damage the load-bearing structural elements, to carry out dismantling work carefully and to clean up after work.

Dismantling of metal pipes.

Dismantling, demolition, dismantling of brick pipes of boiler rooms.

1. Dismantling (mounting) work on the units to be repaired must be carried out in accordance with the technical documentation agreed with the customer and approved in a certain order by the POR.

The POR should contain measures to ensure the safe performance of installation work, a list of inventory devices (scaffolding, fences, etc.) and working drawings of non-inventory devices, if their use is provided for by the POR.

2. Works on dismantling (mounting) of metal structures of equipment and pipelines must be started only after completion of the preparatory work.

It is forbidden to dismantle (install) pipelines and metal structures from ladders and random supports, perform hot work on pipelines without making sure which liquid or gas they are intended for.

3. It is prohibited to carry out work according to the oral instructions of the customer's personnel, as well as according to their sketches and diagrams that are not approved by the responsible representatives of the customer.

4. Performance of work in the locations of existing underground engineering communications (electric cables, communication cables, gas pipelines, water and technological networks, etc.) and their disclosure can be carried out with the permission of the organization operating these communications. The boundaries and axes of communications on the ground should be marked with conspicuous signs and marked in the POR.

5. The operating equipment, communications, pipelines, electric cables and the like located within the installation area must be disconnected, short-circuited, and the equipment and pipelines must be freed from explosive, combustible and harmful substances.

If it is impossible to turn off the existing equipment, communications, pipelines, they must be protected, and warning posters must be installed.

6. It is prohibited to tear off equipment and metal structures from foundations using cranes or rigging equipment. Before dismantling the equipment, the metal structures must be raised above the foundation using jacks or wedges.

Structural elements intended for installation must be cleaned of dirt and dust before they are lifted.

Before starting to lift a structure or equipment, the head of the lift must instruct the members of the team, crane operators and mechanics of winches or tractor operators on the safe conduct of work, familiarize them with the POR or TC, and clearly allocate responsibilities during the lifting of the structure.

7. The communication and signaling system (information exchange) must be selected taking into account specific conditions. It should provide a clear transmission of information and unambiguous understanding of it.

8. The actions of workers during the lifting and moving of structures should be determined by the teams of one leader. The "Stop" signal is given by any of the workers who have noticed the danger. In this case, work on lifting and moving structures must be stopped.

9. When lifting loads by any means, measures must be taken to exclude the possibility of touching the lifted load with elements of cranes, fixtures, rigging, surrounding buildings, foundations, equipment, etc.

During the use of cranes, it is necessary to adhere to the requirements of NPAOP 0.00-1.01-07 (z0784-07).

10. In particularly critical cases (during the lifting of a structure with two or more cranes, the use of complex rigging, the method of turning around a hinge, etc.), the signals must be given by the performer of the work, appointed by order of the head of the organization performing the marked work.

11. Lifting and moving cargo with several cranes (mechanisms) should exclude the possibility of overloading any crane.

12. Lifting of structures must be completed within one day. If the end of the lifting of the structure falls in the evening or at night, the illumination of the site and the structure to be lifted must be at least 10 lux.

It is forbidden to interrupt and transfer the started lifting of the structure to the next day. If necessary, the structure must be lowered to the ground and the lifting equipment partially unloaded.

13. A freely suspended lifting structure must be restrained from swinging and rotating by guy wires.

14. It is forbidden for people to stay on the lifted structures. During the movement of a structure raised above the ground, riggers should not be under this structure, as well as in the zone of possible fall of rigging equipment and materials.

15. During breaks in work, it is forbidden to leave the raised structures suspended.

16. Unslinging of structural elements and equipment installed in the design position must be carried out after their permanent or temporary reliable fastening.

17. It is prohibited to move the installed structural elements or equipment after their slinging, except for the cases noted in the POR.

18. It is forbidden for people to stay under the elements of mounted structures and equipment until they are installed in the design position and secured.

19. If it is necessary for workers to stay under the equipment (structures) that are being installed, as well as on the equipment (structures), special measures must be taken to ensure the safety of workers.

20. Stretch marks for temporary fastening of elements and structures must be attached to reliable supports (anchor foundations, etc.). The number of stretch marks, their intersection, methods of tension and attachment points must be determined by the POR.

21. Stretch marks should not touch the sharp corners of structures and bend over them. Bending of guy wires at the points of their intersection with elements and structures is allowed only after checking the strength and stability of these elements and structures under the influence of forces arising in the guys.

22. It is forbidden to perform work at height in open areas, if the wind speed is 15 m/s or more, during ice, thunderstorms or fog, which impair visibility within the work front. Work on the movement and installation of vertical panels and similar structures with a large windage must be stopped if the wind speed is 10 m/s or more.

23. The tie-in of the installed pipelines into the existing ones must be carried out in accordance with the requirements of the current regulatory legal acts.

24. The use of structural elements of buildings and structures, as well as equipment and pipelines as permanent or temporary supports, as well as for installation loads, is allowed only if confirmed by calculation, agreed with the customer and provided for in the POR.

25. In the event of a malfunction of any unit or element of equipment, rigging, fixtures, equipment of a hoisting machine, an information exchange system between a crane operator and crane workers, etc., the lifting and movement of goods must be stopped, people from the danger zone are withdrawn and measures are taken to elimination of an emergency.

26. Before starting the installation of the pipeline, permanent means of fastening (brackets, consoles that support, metal and reinforced concrete structures, movable and fixed supports, suspensions, etc.) must be installed at its location.

27. The marking of the installation sites of brackets, consoles, hangers and their installation, as well as the installation of pipelines, must be carried out using scaffolding.

28. Installed on the supports, the nodes and sections of pipelines adjacent to them must be securely fixed with permanent fasteners. Temporary fastening of pipelines is prohibited.

29. During the installation of pipelines, it is prohibited to remove individual elements of load-bearing structures (supports, hangers or consoles).

30. During the installation of spatial nodes of pipelines, it is necessary to fasten all branches of the node with permanent fasteners.

31. It is necessary to rotate the pipes during connection and welding using the keys intended for this (chain, tape) or other rotary devices.

32. In the existing workshop, dismantling of pipelines is allowed only after they are completely disconnected from the existing units and pipelines and they are emptied from the material. Pipelines containing toxic and explosive substances, in addition, must be ventilated, after which it is necessary to take air samples for the absence of toxic and explosive substances in them.

33. Dismantling of individual pipes and assemblies must be carried out in such a way that the remaining part of the pipeline is stable. It is forbidden to remove pipelines at different heights along the same vertical at the same time.

34. It is allowed to proceed with the installation of pipelines and fittings that were in operation only if there is a certificate confirming their suitability for subsequent operation, the absence of a residue of technological products in them and permits the work to be carried out.

35. In the equipment installation area, through traffic is prohibited, driveways must be closed and road signs and signs installed.

36. During the installation of equipment, it is necessary to adhere to the technological sequence of supplying equipment to the installation area, as well as the sequence of installing equipment on foundations in accordance with the POR.

37. During the installation (alignment) of equipment on the foundation, it is necessary to use special devices.

38. During the use of suspended scaffolds, hooks and pins must be fastened to the equipment to be mounted before they are raised.

39. When cutting large parts of trusses, beams and other metal structures, measures must be taken to prevent the collapse of the cut parts.