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PROJECT OF WORK PRODUCTION

Installation of a free-standing anchor-corner support on the foundation for a 500 kV overhead line,

type U2 (rotation method)

You can download it in doc format

I General part

This work project (PPR) was carried out on the basis of order No. 1154 dated December 28, 2015 “On the assembly and installation of overhead line supports on the territory of the training ground of the personnel training center”

II Project composition

The PPR includes a technological map for the production of work using jib-type truck cranes, jib-type loader cranes, loader cranes and PS-1 hoists.

III Explanatory Note

In order to improve the qualifications of personnel in linear sections, gain practical experience in assembling and installing supports, increase readiness for performing ATS, as well as equipping a training ground, a Work Project for the installation of a metal free-standing anchor-corner support (type U-2) has been drawn up for further implementation of this project.

The weight of the anchor-corner support type U2 is 5.712 kg.

PPR includes the following stages of work:

Preparatory work. Preparation of the installation site (clearing snow);

Fastening the metal post of the anchor-corner support U2 to the foundation with mounting hinges;

Lifting and securing the support.

Completion of work.

No.	Sequence of operations	Job title	Group according to EB	Qty, people
Preparatory work. Preparing the installation site (clearing snow)
	Assess the installation site where it is necessary to clear snow (relief, swampiness, soil condition, presence of uncleaned forest, large stones, fresh stumps). At the installation site, determine the direction of the bulldozer's route moves.	Master Electrician
	Conduct targeted briefing to the brigade with registration in the work permit. The briefing must indicate safety measures during the work, the order of operations, the technology for performing the work, indicate the directions of the route moves of the bulldozer, and, upon completion of the work, indicate the parking place of the bulldozer. The brigade is allowed to work.	Master -responsible work manager; Electrician -performer of the work (permitting);
	Complete the work to prepare the installation site and place the bulldozer in its parking area. Clear the foundations of snow manually (with shovels).	Electrician -performer of the work (permitting); Bulldozer driver- crew member
	Complete the work.	Master -responsible work manager; Electrician -performer of the work (permitting);
Fastening the metal rack of the anchor-corner support U2 to the foundation with mounting hinges
	Check the compliance of the dimensions at the centers of the reinforced concrete footings (foundations) with the dimensions of the support, as well as the vertical marks of the foundations. If deviations exceeding the established tolerances are detected, the support may be lifted only after the detected defects have been eliminated. Inspect the structure of the support post being installed and make sure that there is no possibility of it falling. The presence of all bolted connections and structural elements of the support. Check tools, devices, protective equipment and materials. Protect the danger zone with tape.	Master -responsible work manager; Electrician -performer of the work (permitting);
	Conduct targeted briefing to the brigade with registration in the work permit. The briefing must indicate safety measures during work, the order of operations, technology for performing work, and the danger zone. The brigade is allowed to work.	Master -responsible work manager; Electrician -performer of the work (permitting); Brigade
	Install the truck crane at the workplace in accordance with Appendix No. 1.	Truck crane operator- crew member Master (responsible
	Install the hinges onto the support leg foundations (using wood blocks to align the hinge after installing the support) and onto the support shoes.	Truck crane operator- crew member
	Sling the support post. Using a truck crane, bring the support stand and shoes to the foundations. Secure the support shoes to the hinges. At the place where the cable support is attached, install wooden spacers to prevent the support from touching the ground and to level the support horizontally.	Truck crane operator- crew member Electrician (slinger) - team member
	Attach two loop slings to the support post (at a distance of 17 m from the base of the support) and insert a Ø 23 mm mounting rope to the traction mechanism (in accordance with Appendix No. 2). Similarly, from the opposite side of the support, lead the cable to the brake mechanism.	Electrician - team member
	Install a sling for lifting the support column with a release device, securing it to the crane hook. Install wooden pads under the sling (or inventory pads under the sling). (in accordance with Appendix No. 2).	Truck crane operator- crew member Electrician (slinger)- crew member
Lifting and securing the support.
	Arrange the vehicles in accordance with Appendix 1. Before starting to lift the support, remove uninvolved personnel from the danger zone (during the process of installing the stand, before moving the mechanisms, it is also necessary to remove uninvolved personnel from the danger zone).	Master -responsible work manager (responsible for safe performance of work using PS) Bulldozer driver- team member;
	The truck crane smoothly lifts the support. The traction machine smoothly begins to move from the support column, the brake machine moves towards the traction machine so as to prevent the creation of slack. Raise the support post to a height of 200-300 mm.	Master -responsible work manager Bulldozer driver- team member; Truck crane operator- crew member
	Check the serviceability of traction mechanisms, rigging devices, installation of braces, as well as the correctness and reliability of fastening of all rigging under load.	Master -responsible work manager (responsible for safe performance of work using PS)
	The truck crane smoothly lifts the support. The traction machine smoothly begins to move from the support column, the brake machine moves towards the traction machine so as to prevent the creation of slack. Raise the support post to an angle of 35-40 degrees from ground level. Remove the load from the truck crane and transfer it to the traction mechanism.	Master -responsible work manager(responsible for the safe performance of work using PS) Bulldozer driver- team member; Truck crane operator- crew member
	Pull out the release device, releasing the hook of the truck crane. Move the truck crane to the transport position and remove it from the danger zone.	Truck crane operator- crew member Electrician -performer of the work (permitting);
	The traction machine smoothly begins to move from the support column, the brake machine moves towards the traction machine so as to prevent the creation of slack. Install the support stand on the foundations.	Master -responsible work manager Bulldozer driver- team member;
	Install square washers on the rack shoes and screw nuts onto the anchor bolts. In this case, the nuts should not reach close to the surface of the rack shoes.	Electrician - team member
	Use a traction machine to apply tension to the cable to slightly tilt the support post. Remove the hinges. Move the traction machine back smoothly to place the support stand on the foundations.	Master -responsible work manager Bulldozer driver- team member;
	Align the support post according to tolerances. If necessary, to level the support post, install shims between the fifth support and the foundation.	Master -responsible work manager Electrician -performer of the work (permitting);
	Tighten the nuts and locknuts of the anchor bolts. Weld the pads to the heel of the rack. Weld the washers of the anchor bolts on three sides.	Master -responsible work manager Electrician - team member Electric and gas welder- crew member
Completion of work.
	The electrician climbs onto the support post with the endless rope block to the place where the rigging is attached, stands on the lanyard, securing the safety harness lines to the support structure, and secures the endless rope block to the support post.	Electrician -performer of the work (permitting); Electrician - team member
	Electricians on the ground should lift the installation tool along an endless rope in a cotton bag.	Electrician -performer of the work (permitting); Electrician - team member
	Electricians on the ground must hold the endless rope to prevent sudden lowering of the rigging. Lower the rigging and tools to the ground one by one.	Electrician -performer of the work (permitting); Electrician - team member
	The electrician, located on the support, lowers the endless rope block to the ground.	Electrician -performer of the work (permitting); Electrician - team member
	Remove the workplace, rigging, tools, equipment.	The whole brigade
	Remove the team from the workplace	Electrician -performer of the work (permitting);
	Complete the work.	Master -responsible work manager Electrician -performer of the work (permitting);

Each properly organized construction must have well-written construction documentation, which, as a rule, includes the development of documents such as a traffic management project (abbreviated as POD), construction organization project (abbreviated as POS) and work production project (abbreviated as PPR). All these documents are capable of ensuring the safety of employees during construction and installation work, ensuring the correct organization of the actual construction of the facility itself, as well as improving the quality of construction work performed.

Today, due to the fact that construction work has become characterized by the highest degree of severity, there is a need for the creation and more responsible development of technological and technical solutions that are used in the production of work. That is why the main and most significant document in the system of organizational and technological training becomes the PPR document in construction - download for free, which can be found at the end of this article.

This document contains a list of technological rules, requirements for labor protection and safety and environmental safety, among other things. Based on the work project, construction work is organized, the necessary materials and resources are determined, the deadlines for completing the work are determined, and possible risks are worked out.

Who develops the PPR?

Work projects for the construction of new structures or for the reconstruction or expansion of any facility are developed by general contracting construction and installation enterprises. If PPRs are ordered by a general contracting or subcontracting construction and installation organization, then they can be developed by design and technology institutes or design and engineering organizations.

It should also be noted that sometimes, when carrying out large volumes of work, PPRs are drawn up not for the object as a whole, but for a specific type of work, for example, for the installation of prefabricated structures, for excavation work, for roofing work, etc. Previously, such documents were called work organization projects (abbreviated POR), but in the current standards SNiP 12-01-2004 instead of SNiP 3.01.01-85, they are also called WPR with the proviso that these are projects for the production of specific works. When carrying out certain types of work related to general construction, special or installation work, PPRs are developed by companies that are directly involved in this.

Composition of PPR

Work schedule;
Technological maps;
Construction master plan;
Schedules for receipt of construction materials, products and equipment at the site;
Lists of technological equipment and installation equipment;
Worker movement schedules around the facility;
Solutions for geodetic work;
Safety solutions;
Explanatory note, which should contain:
- justification of decisions on the implementation of certain types of work, including those performed in winter;
- calculations of temporary utility networks;
- measures that would ensure the safety of materials, products and structures, as well as equipment at the construction site;
- a list of mobile structures with calculation of the need and justification of the conditions for their location on the construction site;
- measures to protect these structures from damage, as well as environmental protection measures.

But it is worth noting that only 4 documents remain the main ones in the PPR: construction plan, work schedule, explanatory note and technical map. Let's look at them in more detail.

The key PPR document in construction is, of course, the work schedule. The success of the entire project largely depends on the literacy of its development. In short, the calendar plan is a model of construction production, in which the sequence and timing of construction work at the site are clearly and accurately established.

The second most important PPR document remains the construction master plan (or abbreviated construction plan). The quality of its preparation primarily determines the reduction of costs for organizing a construction site, which at the same time allows for the creation of safe working conditions for workers. When developing a construction plan, specialists take into account various methods of organizing a construction site, from which the most rational one is subsequently selected.

The next no less important PPR document is the technological map, which determines the most optimal methods and sequence of performing a particular type of work. In addition, labor costs are calculated here, the necessary resources are determined and the organization of labor is described. Technological maps, as a rule, include graphic and text documents, which may include workplace diagrams, which indicate the scope of work and the boundaries of the areas into which the object is divided. In principle, technological maps can be of three types:

typical without reference to specific objects;
typical with reference to standard objects;
individual with reference to a specific project

And the last important element of the PPR can be called an explanatory note, in which, as mentioned above, all kinds of labor protection measures are indicated, the conditions and complexity of construction are determined, the presence of warehouses and temporary structures is justified, etc. In addition, the explanatory note provides technical and economic indicators of construction.

You can download the PPR for construction.

AKB Monolit has been developing PPR for more than 10 years.
The PPR for the installation of metal structures is developed by our specialists based on the initial data provided by the PPR customer.
The PPR for the installation of metal structures for construction organizations is the main organizational and technological document developed for the purpose of safe construction of the building. The presence of a PPR indicates the readiness of the construction organization to begin construction and installation work.

Initial data for ordering PPR for installation of metal structures
1) Assignment for the development of PPR;
2) Construction Organization Project (COP);
3) Working documentation (DM);

Composition and content of PPR for installation of metal structures
1) Work schedule;
2) Construction master plan (stroygenplan);
3) Schedule of arrival of metal structures at the site;
4) Schedule of movement of workers around the facility;
5) Schedule of movement of the main construction vehicles around the site;
6) Technological diagrams (maps) for the installation of metal structures;
7) Explanatory note containing:
- solutions and instructions for the installation of metal structures;
- requirements for quality and acceptance of work;
- safety and labor protection requirements;
- fire safety requirements;
- environmental protection measures.

The PPR developed by our specialists provides for measures to ensure the stability of metal structures, taking into account their design and layout solutions (including installation connections), the material of structural elements and local conditions.

The stability and geometric immutability of mounted structures of buildings and structures is ensured by compliance with the technological sequence of installation of structural elements and blocks. This is achieved by our specialists dividing the building (structure) in plan and height into separate stable sections (spans, floors, tiers), the installation sequence of which ensures the stability and immutability of the mounted structures in this section.

Even before the start of the installation of metal structures at the construction site, according to the construction organization project (CDP), the work of the preparatory period, the excavation work and the “zero cycle” work must be completed.

Parts of steel structures are usually manufactured at the plant in accordance with the requirements of standards or technical specifications for products of specific types, types and brands according to working documentation (KM, KMD), approved by the developer and accepted for production by the manufacturer.

Work on enlarging steel structures and preparing them for installation is carried out using a load-lifting crane (truck, crawler or tower). The choice of a load-lifting crane can be carried out during the development of a work execution project (WPP), but with mandatory coordination with the organization that developed the construction organization project (COP).

As a rule, the installation of load-bearing metal structures of one-story buildings is carried out in the following technological sequence:

1) Installation of metal columns of the building. The installation of columns begins with a tie panel. If for some reason the specified requirement cannot be met, then it is necessary to install a temporary bonded panel from the first installed columns of the row, beam or spacer and temporary vertical connections between them, installed below the level of the beam (spacer). Then the next column is installed and secured to the temporary bracing panel with a beam or spacer.

2) Installation of coating structures. Installation of metal roofing structures begins with a bonded panel, and if this is not possible, then with any panel, establishing horizontal and vertical connections between adjacent trusses. The next truss to be installed must be secured to the bracing panel with a spacer.

When installing load-bearing metal structures of multi-story buildings, after installing the columns, crossbars are mounted along the axis, ensuring the stability of the resulting frame in the transverse direction. In the longitudinal direction, stability is ensured using vertical connections along the columns and spacer elements. If the stability of the building in the longitudinal direction is ensured by wall structures (which should be indicated in the working documentation), then they should be installed simultaneously with the frame and floors.

In all cases, during the construction of buildings, a mandatory condition is the complete readiness of the assembled steel structures in the section for subsequent work, regardless of the state of installation of the structures in adjacent sections.

The installation of steel structures is usually carried out by teams of workers, each of which includes: assemblers, electric welders, crane operators, and general workers.

Mounted columns, beams and purlins (trusses) must be prepared in advance and placed in the operating area of the crane.

The area where metal structures are being installed must have a temporary fence to prevent unauthorized persons from entering the work area. A temporary road must be laid along the perimeter of the building or structure being constructed to move the installation crane and transport steel structures to the installation site. There should also be storage areas for load-handling devices, a stand with sling diagrams and a table of load weights, spotlights for illuminating workplaces at night, and a wheel washing station.

At PPR, our specialists develop diagrams of horizontal and vertical connections for a load-lifting crane when installing metal structures of a building or structure.

Installation work must begin after delivery and acceptance of the foundations of a building or structure - column supports, if there is an act for hidden work. During the acceptance process, an instrumental quality check of previously completed work must be performed. When checking, the position of the transverse and longitudinal axes of the foundation-supports in plan and the elevation marks of the supporting surfaces of the foundations must be determined.

Installation of metal structures is carried out “bottom-up”, in sections (clamps), using the “crane” method. The installation sequence is developed in the PPR and it must ensure stability and geometric immutability of structures.

Welding or bolting connections are made only after checking the correct installation of structures.

PPR for installation of sandwich panels

Installation of enclosing structures made of light profiled sheets or wall and roof “sandwich panels” is usually carried out in a separate process after the installation of load-bearing metal structures.

Installation of steel profiled sheets of walls and roofs is carried out according to markings that ensure fixation of the calculated width of the profiled sheet (the distance between the axes of the outer corrugations).

Fastening of profiled sheets of roofing and walls to the load-bearing elements of the metal frame of a building or structure is carried out using self-tapping or self-drilling screws or by shooting with dowels in accordance with the requirements of the working documentation (DD).

Installation of wall and roof sandwich panels is carried out panel by panel. Slinging of panel packages is carried out only using strappings with vertically located slings. Slinging of “sandwich panels” during installation is carried out only using flexible fabric slings or other methods, including using special traverses, which prevent jamming of the metal edges of the panels and damage to the paint layer.

Sealing gaskets in the vertical and horizontal joints of the sandwich panels are laid before the panels are installed.

The enlarged assembly of walls from light panels into cards is carried out on stands in the operating area of a load-lifting crane. Maximum deviations of maps are carried out according to the working design.

All linings of horizontal and vertical joints, as well as corner elements of panels, are placed on sealant to prevent moisture from entering the joint.

If there are no special requirements in the working documentation for deviations of the mounted wall and roof panels, they should not exceed standard values.

Types of installation connections when developing PPR

When installing metal structures, various types of installation connections are used:

1) Installation connections without controlled bolt tension. This type of installation connections includes shear bolted connections, in which external forces are perceived due to the shear resistance of the bolts and the shear resistance of the connected elements. When assembling such mounting connections, the holes in the structural parts must be aligned and secured against displacement of the parts with assembly plugs, and the assembled packages must be tightly bolted.

2) Mounting connections with high-strength, tension-controlled bolts. Installation connections with high-strength, tension-controlled bolts include:

Friction and shear-resistant connections, in which external forces are perceived due to the resistance of frictional forces arising along the contact planes of the connected elements from the pre-tensioning of the bolts;

Friction-shear assembly connections, in which external forces are perceived mainly by overcoming the compression resistance of the flanges from the pre-tensioning of high-strength bolts.

3) Special installation connections:

Shooting with high-strength dowels;

Installation of self-tapping and self-drilling screws;

Contact spot welding;

Electric rivets;

Folding of longitudinal edges.

A characteristic feature of special installation connections is that to perform them, a one-sided approach to the structural elements being connected is sufficient. The main area of special installation connections used is the fastening of the enclosing structures of buildings or structures.

4) Welded joints. The type of welding equipment is selected depending on the welding method, conditions and features of welding work and the specified parameters of the welding process. Basic welding methods used in the installation of metal structures.

Manual arc welding with coated electrodes. It is a universal and basic welding method for making seams in all spatial positions when enlarging and installing metal structures.

Mechanized welding with self-shielding flux-cored wire. It is used primarily for making connections in the lower position when enlarging structures at the bottom and for welding extended seams at the design level.

Mechanized welding in shielding gases with solid wire. It is used for enlarged welding of structures in the lower position with protection of the welding zone from the wind.

Automated submerged arc welding. It is used for welding straight, extended seams in the lower position when enlarging sheet blanks and structures.

Newly purchased equipment that requires installation also needs to develop a work plan. This project describes in detail the progress of work, according to which the installation of technological equipment should be carried out.

Requirements for PPR for installation of equipment

The document must be in full compliance with construction standards and regulations. Measures for organizing safety, fire safety, and labor protection must be outlined.

The project for the installation of equipment consists of:

An explanatory note containing all the details of the requirements for organizing the installation of equipment.
The calculation and descriptive part, containing unified solutions for installation, assembly methods, describes the necessary types of welding work.

In the lists of installation equipment and fixtures, the planned volumes of activities and the requirements for materials (pipelines, metal structures, etc.) are calculated. The most suitable technologies for specific installation operations are also identified. This also includes a calendar with work schedules.

A package of drawings and diagrams, including enlarged and technological drawings of the assembly of components and equipment, installation diagrams of lifts, equipment, scaffolding, as well as a diagram for connecting temporary electricity, water, gases and steam. The calculations carried out in the computational and descriptive part determine the required amount of energy resources.

The project for the installation of equipment must be confirmed by all parties who intend to take part in the work.

Why is it necessary to develop a work plan for equipment installation?

To optimize work, reduce its duration and reduce costs, it is advisable to use modern mechanization and technological solutions. For these purposes, any Work Production Project is created.

Installation and construction work must be completed within the agreed time frame. At the same time, it is necessary to ensure fire and environmental safety, labor protection. All this is stipulated in the PPR and is mandatory for execution.

Who should develop the PPR

Development of the Project is the responsibility of the organization installing the equipment:

In the contract construction method, this is the General Contractor.

When combining the functions of the Contractor and the Customer, this is the Developer.
To perform specialized or individual types of work, this is a Contractor or Subcontractor.

The chief engineer or the head of the organization performing the installation approves ready-made plans for installation of equipment. Certain types of installation work require the development of separate PPR. They are approved by the contractors and must also be agreed upon with the General Contractor.

If installation work will be carried out on the territory of the enterprise, then the PPR should be agreed upon with the organization operating this territory.

According to the rules, the project for the installation of equipment must be agreed upon, approved and transferred to the construction site two months before the start of the planned installation work.

Here you can see examples of work projects

PPRk (Crane Work Project)

The installation and safe operation of three tower cranes during the construction of a series of monolithic residential buildings is considered. Due to cramped conditions, the cranes operate with a limited service area.

Stationary tower cranes of the Jaso J110N and Jaso J140N brands erect structures of a 19-story building from elevation 0.000 to elevation. +63.000. The cranes are mounted on foundation supports with a slab elevation of -2.200, with tower anchorage.

The maximum load lifted by cranes at a reach of 2.5-15 m is 5 tons, at a reach of 15-40 m - 2.5 tons.

Tower cranes are used at all stages of construction of the underground and above-ground parts of the building, namely:

for unloading from vehicles and storing materials and products as they arrive at the construction site
for supplying packs of reinforcement, reinforced mesh and formwork, as well as for supplying concrete in buckets during the construction of monolithic structures
for supplying small-piece materials and mortar to the installation horizon
for supplying and removing construction equipment, equipment, consumables, etc. from the building.

Project scope: Explanatory note A4 - 35 sheets, drawings A1 - 5 sheets

This is an example of a work permit for the excavation of a pit under the protection of a sheet piling fence. Excavation is carried out in 3 stages.

Stage 1. Work at the level of 135.50÷134.60 is carried out by a Hitachi ZX 200 excavator with a bucket capacity of 0.8 m3 (maximum digging radius - 9.75 m, maximum digging depth - 6.49 m) equipped with a backhoe bucket with loading of soil into dump trucks. With a lag of 4 meters from the operation of the Hitachi ZX 200 excavator, the installation of the strapping belt (1 I-beam N45 B2) is carried out. Installation is carried out using a truck crane according to a separately developed design and maintenance plan.
Stage 2. Work at level 132.50 is carried out with a Hitachi ZX 200 excavator. At this level, a pit is developed to a design depth of 127.84÷127.84 m, by excavating and moving the soil into a dump truck. With a lag of 4 meters from the operation of the ZX 200 excavator, a spacer structure is made, consisting of a strapping belt (2 I-beams N45 B2), spacers made of pipes 426x10mm in axes 1÷10 and struts, as well as pipes 630x12mm in axes 11÷16. Installation is carried out using a truck crane according to a separately developed design and maintenance plan.
Stage 3. Excavation of slopes is carried out by developing and moving soil with a Bobcat S330 excavator into the work area of a Hitachi ZX 225 grab. The grab brings the developed soil to the surface and loads it into a dump truck. The Bobcat S330 excavator is released from the pit upon completion of the work by a truck crane according to a separately developed work permit.

At the last stage, the berm soil is excavated under the installed jibs of the sheet pile fencing of the pit using a mini excavator.

Project scope: Explanatory note A4 - 28 sheets, drawings A1 - 5 sheets

Project for the installation of a water pipeline using the auger method

Laying a water pipeline in a case constructed using a closed auger tunneling method. The excavation of a rectangular working pit and a round receiving shaft is also being considered.

Work on laying pipes using auger tunneling is carried out in several stages:

1st stage. Pushing the pilot line, consisting of rods and a pilot head, to the length of the interval from the starting pit to the receiving pit. The exact direction of the route is ensured by a system for monitoring the position of the pilot head, information about the position of which is displayed on the monitor screen suspended in the launch shaft.
2nd stage. Punching of casing steel pipes and expander mounted in the starting pit on the last rod of the pilot line within the length of the entire interval between the pits. Pushing out working pipes from the starting pit with simultaneous removal of the squeezed out casing steel pipes in the receiving pit. The casing pipes are being pressed with a drilling head at the head of the pipe string, which serves to develop soil in the face; soil is transported from the face to the bucket in the starting pit by a screw conveyor.
3rd stage. Pushing working pipes with a diameter less than or equal to the diameter of the casing pipes, with simultaneous pushing of the casing pipes and screw conveyor links into the receiving pit and their disassembly. When the diameter of the working pipes is less than the diameter of the casing, the construction gap (space) formed between the working pipeline and the inner surface of the excavation must be filled with cement mortar.

Project scope: Explanatory note A4 - 25 sheets, drawings A1 - 4 sheets

PPR for installation of sheet piling and bored piles

An example of a PPR for the installation of sheet piling fencing for a pit in the security zone of a power transmission line (power line). Making bored piles: drilling a well with augers, installing the reinforced frame of the pile with a drilling rig, filling the pile with concrete mixture using the bottom-up method.

Drilling of bored piles Ø620 mm is carried out using a Hitachi-based drilling rig

Drilling of each well should begin after an instrumental check of the grades of the planned surface of the earth and the position of the contour axes on the site.

Concreting of piles is carried out by supplying concrete mixture into the well through hollow augers.

As concrete is fed into the well, the auger sections are lifted and dismantled, and the level of concrete in the well must be at least 1 m higher than the bottom of the auger. The distance between the bottom of the well and the lower end of the auger when concreting begins should not exceed 30 cm.

Project scope: Explanatory note A4 - 20 sheets, drawings A1 - 6 sheets

Project for the installation of scaffolding

Example of a project plan for installing scaffolding on the facade of a building under construction

Rack-mounted attached clamp scaffolding is a spatial frame-tier system mounted from tubular elements: racks, crossbars, longitudinal and diagonal braces, which are connected to each other using node connections - clamps.

The scaffolding is fastened to the wall using anchors placed in holes punched in the walls with a diameter of 14 mm.

Scaffolding must be attached to the wall of the building under construction. Fastening is carried out through at least one tier for fastening racks, through two spans for the upper tier and one fastening for every 50 sq.m of projection of the scaffolding surface onto the building facade.

Project scope: Explanatory note A4 - 38 sheets, drawings A1 - 4 sheets