Scaffolding installation project. PPR for scaffolding Project for the installation of tubular scaffolding

In fact, scaffolding is a versatile piece of equipment that can be used to perform various types of work. Whether it is light cosmetic repairs or masonry, the use of these installations will be relevant in any case.

If you decide to purchase such equipment, first of all, you should study the PPR for scaffolding. With the help of this document, you can effectively plan and organize work, accurately position the structure. Error-free installation implies the following positive aspects:

- the efficiency of the work performed significantly increases;

- time resources for their implementation are saved;

- the safety of workers is ensured.

Therefore, PPR for the installation of scaffolding should be used by both beginners and experienced builders.

Also, the versatility of the scaffolding lies in the possibility of their use on various types of construction sites. Their use is relevant in the construction of small private structures, as well as in the construction of large facilities. Scaffolding is often used when performing facade work on multi-storey buildings. Thus, the equipment itself becomes a large structure that is tightly adjacent to the construction site. So, it becomes necessary to develop a project for the creation and installation of scaffolding. A carefully thought-out layout will make it possible to locate the structure as correctly and accurately as possible, save money on their purchase and installation.

There are several options for developing such a document. The best solution is to prepare it yourself. Specialists who know all the intricacies of planning can also help in this matter. It is especially important to turn to professionals when you need to work with complex facades. And if future work is not specific, you can easily download a free PPR for scaffolding on the Internet. However, this option has its own nuances. Poor quality work that contains error can become not only ineffective, but also a dangerous scaffolding project. Therefore, before downloading the project on the network, you first need to carefully study the existing PPR options for scaffolding. The sample must be competently designed and comply with all standardized rules and requirements. It's also better to check if it has actually been implemented. Responsibility for the result obtained will be borne by you, and not the first developer of PPR for the installation of scaffolds.

From the foregoing, it follows that the most ideal option would be to contact professionals who will prepare a personal project that corresponds to the upcoming work. This will guarantee the correct installation of the scaffolding and the safe work of people.

If you will independently prepare the PPR for the installation of scaffolding, you need to download several options. Carefully studying the documents, you should take into account a huge number of subtleties and details that you need to understand. For example, what should be the distance between the wall of the structure and the scaffolding. It is also necessary to have information regarding the permissible height differences in the forests. You can download the PPR for scaffolding on the websites of manufacturers of scaffolding tools similar to ours. However, such clarifications can only be known by experienced specialists.

Turning to professionals, the PPR will be developed efficiently and in the shortest possible time. After that, you can confidently start to work. Without this document, activity is, in principle, impossible, or rather, even illegal. After all, documentary evidence of the correct installation, safety is the basis of any construction activity. Only by confirming this with existing standards, it is possible to proceed with the installation of scaffolding. PPR for the installation of auxiliary structures are an integral part of organizational and technological documents and are necessary in the preparation of permits for any construction work.

WORK PRODUCTION PROJECT (PPR)

Project for the installation of scaffolding LSPR-200

PPR is applicable directly to the installation of the most widely used rack-mount attached scaffolding, manufactured according to the specifications of GOST 27321. Scaffolding can be of any degree of assembly (tubular, frame and frame) and various in the design of nodal connections (clamp, hook, wedge or pin); while the racks, frame and frame elements are joined using pipes.

PPR consists of text and graphic parts. The graphic part is represented by diagrams of hazardous area fencing, installation sequence, scaffolding to the wall.

PPR has the following sections:

1. Explanatory note.

2. List of used documents.

3.1. Preparatory work.

3.2. Basic work.

4. Requirements for quality and acceptance of works.

5. The need for means of mechanization, tools, inventory and fixtures.

6. Safety and labor protection.

7. Peculiarities of scaffolding installation on high-rise buildings, on buildings with balconies (loggias).

8. Technical and economic indicators.

1. Explanatory note

PPR for the installation of scaffolding for the device of a ventilated facade on the building of the fitness center was developed on the basis of the terms of reference and the presented initial data. As part of the terms of reference and initial data: working documentation for the ventilated facade, passport and instructions for the installation of scaffolding (for example, frame scaffolding LSPR-200), drawings for the building.

This PPR was developed with the following initial data.

LSPR-200 scaffolding - attached, with a ventilated facade can reach a height of 40 m. The step of the tier in height is 2 m, the step of frames along the wall is 3 m, the width of the passage between the posts is 0.95 m. Standard load at a height of over 20 m no more than 100 kgf / m0 "style \u003d" background: white; border-collapse: collapse "\u003e

Components of scaffolding LSPR-200

Frame (2x1 m)

Frame with ladder (2x1 m)

Communication (3.05 m)

Diagonal connection (3.3 m)

Plug-anchor

Blind clamp, 48x48 mm

End fencing

Decking crossbar

It can be seen from the table that the weight of the scaffolding components does not exceed 12 kg and they can be lifted in a package to the mounting horizon using a winch or a roof crane with a lifting capacity of not more than 250 kg.

The building is rectangular, length along the facade is 72.0 m, height is no more than 40 m.

The curtain wall system U-kon with facing elements - ceramic tiles and aluminum profiles is mounted on the facade of the building. In accordance with this, the scaffolds are mounted along the facade in axes 1-12.

2. List of used documents

When developing the PPR, normative, methodological and reference documents were used, which are indicated in the list of used literature. The text also contains references to the following regulatory documents:

GOST 2.601-2006 ESKD. Operational documents

GOST 2.602-95 * ESKD. Repair documents

GOST 9.104-79 * ESKD. Paint and varnish coatings. Operating conditions groups

GOST 7502-98 Metal measuring tapes. Technical conditions

GOST 7948-80 Steel construction plumb bobs. Technical conditions

GOST 8486-86 * Softwood lumber. Technical conditions

GOST 9467-75 * Coated metal electrodes for manual arc welding of structural and heat-resistant steels. Types

GOST 15150-69 * Machines, devices and other technical products. Versions for different climatic regions. Categories, operating conditions, storage and transportation in terms of the impact of climatic environmental factors

GOST 23407-78 Inventory fences for construction sites and areas for construction and installation works. Technical conditions

MDS 12-41.2008 Mounting equipment for temporary fastening of prefabricated elements of erected and dismantled buildings.

3. Organization and technology of work

3.1. Preparatory work

The assembly workers are instructed on the procedure, techniques and rules for assembling and fastening the scaffolding to the wall.

Figure 1 shows an example of a fragment of a construction site plan. Symbols show scaffolding, the border of the danger zone when an object falls from the last tier of scaffolding and a temporary fence of the construction site.

https://pandia.ru/text/80/128/images/image003_66.jpg "width \u003d" 35 "height \u003d" 25 "\u003e load-bearing external walls

Scaffolding

the border of the danger zone when an object falls from the forest layer

temporary fencing of scaffolding

Inspection, control and assessment of the technical condition of the components of the mounted scaffolding is carried out. Damaged components must be discarded.

Preparation for work, installation and start-up of lifting mechanisms (roof crane or winch) for lifting and lowering the components of the scaffolding is carried out. These works are carried out in accordance with the instructions of the lifting equipment manufacturers.

Means of mechanization (hand-held drilling machines, perforators, rammers, etc.) and tools are being prepared, their completeness and readiness for work are checked.

For the installation of scaffolding, a planned and rammed site is prepared, from which water drainage should be arranged, or a site with asphalt concrete pavement. If the soil is wet, then compaction is carried out with crushed stone, broken brick, concrete.

In connection (according to the initial data) with a height difference of up to 400 mm, the area for scaffolding along the facade in axes 1-12 is aligned horizontally in the longitudinal and transverse directions. To level the height difference up to 500 mm, standard concrete slabs and boards with a thickness of at least 40-50 mm are used.

The scope of work is divided into three sections 24 m long along the facade of the building and no higher than 40 m. In this case, one set of LSPR-200 scaffoldings (960 m with dimensions 40x24 m) is used.

The marking of the installation points of the anchor plugs on the wall of the building is carried out in accordance with the working drawing on the wall or "in place".

At the initial stage, the lighthouse points of the wall marking are determined in such a way that the points do not coincide with the window openings. If the attachment point coincides with the opening in the wall, the scaffolding is attached to the supporting structures (walls, columns, ceilings) from the inside of the building with the help of fastening devices and devices; it is not allowed to fix the scaffolding to balconies, cornices, parapets.

The distance of the anchor (dowel) installation point to the opening must be at least 150-200 mm. The horizontality of the extreme points is determined using a level, the points are marked with indelible paint. At two extreme points, using a laser level and a tape measure, determine and mark with paint the intermediate points for installing anchor plugs. Then, at the extreme points of the horizontal line, vertical lines are determined. Indelible paint marks the installation points of the anchors (dowels) on the extreme vertical lines.

3.2. Main works

The works are carried out by grabs 24 m long along the facade of the building and no higher than 40 m high, starting from the first grapple. In the presence of several sets of scaffolds, the device of a ventilated facade and, accordingly, the installation of scaffolds can be carried out in parallel grabs.

Scaffolding is assembled from frames, diagonal braces, shoes with screw height adjustment, deck and deck beams.

The scaffolds are fastened to the wall with standard anchors (dowels).

The frames are built on top of each other to the required height and are connected with each other using locks (clamps) with horizontal and diagonal ties. The floor beams are hung with their brackets on the upper ties of adjacent frames on the two upper tiers, one of which is a worker, the other is a safety one. Wooden flooring is laid on the crossbars.

The scaffolding is erected, according to the manufacturer's instructions, in tiers for the length of the grip.

The technological process of installation consists of assembling the first, second, third and other tiers and fixing them to the wall.

Since the operations for assembling longlines are described in detail in the factory scaffolding installation instructions, they are not provided here.

To fasten the scaffolding with anchors (dowels) in the wall at the marked points, holes are drilled through four meters in a checkerboard pattern, the diameter and depth corresponding to the anchors. The fastening strength is checked by calculation (see section 2) and should be tested selectively using a special device.

If a hole is drilled in the wrong place by mistake and a new one is to be drilled, the latter must be at least one depth of the drilled hole from the wrong one. This rule is not necessary if the wrong hole is pre-concreted or filled with a polymer composition of the same strength.

The holes are cleaned from drilling waste (dust) with compressed air.

The dowel is inserted into the prepared hole and knocked out with an assembly hammer.

End and longitudinal fences are installed on the working and safety tiers. In places of lifting to the working tier, where no diagonal ties are installed, longitudinal fences are installed.

Dismantling of the scaffolding for their rearrangement to a new grip is performed in the reverse order of their installation. Descent of dismantled scaffolding components is carried out using a winch or a roof crane.

4. Requirements for quality and acceptance of works

The quality of scaffolding erection is ensured by the current control of technological operations of preparatory and main works, and is also checked upon acceptance of works. Based on the results of current control of technological operations, certificates of inspection of hidden works are drawn up (for the strength of fastening the scaffolds to the wall).

In the process of preparatory work, they check:

Readiness of the wall and structural elements of the building, means of mechanization and tools for installation work;

The quality of the constituent parts of the scaffolding (dimensions, absence of dents, bends and other defects of the scaffold elements);

Correct and reliable installation of scaffold shoes on the base.

In the process of installation work, they check:

Accuracy of wall marking;

Diameter, depth and cleanliness of holes for anchors (dowels);

Anchoring strength;

The verticality of the frame racks and the horizontalness of the ties, crossbars, scaffolding flooring.

When extending frames, the gap between pipes and branch pipes should not exceed 3 mm.

When laying the flooring, the strength of the fastening and the absence of the possibility of movement are checked.

When accepting the work, the acceptance committee inspects the mounted scaffolding as a whole and especially carefully the attachment points and interfaces.

Scaffolding is subject to a standard load test in the presence of the acceptance committee for two hours. At the same time, their strength and stability, reliability of fastening to the wall, flooring and fences, and grounding are assessed.

The railing must withstand a concentrated load of 70 kgf applied to them in the middle and perpendicularly.

Bearing horizontal ties must withstand a concentrated load of 130 kgf applied in the middle.

Acceptance of the mounted scaffolding is formalized by the acceptance certificate. An act of inspection of hidden works is attached to the act of acceptance of works.

The quality of scaffolding erection is assessed by the degree of compliance of the actual parameters and characteristics specified in the design and normative-technical documentation.

The main monitored parameters and characteristics, methods of their measurement and assessment are shown in Table 4.1.

Table 4.1


Technological operations	Controlled parameter, characteristic	Allowed value, requirement	Control method and tool
Marking extreme points horizontally	Accuracy of marking
Marking extreme points vertically	Accuracy of marking		Theodolite
Marking intermediate attachment points	Accuracy of marking		Laser level, plumb line, tape measure
Drilling holes for plugs	Depth, Diameter,	screw length +10.0 screw diameter +0.2 mm	Depth gauge, bore gauge
	Distance to the opening, corner of the building	Not less than 150.0
	Hole cleanliness	Dust free	Visually
Installation of shoes	Board lining thickness		Metal ruler
Assembling scaffolding sections and tiers	Deviation from verticality	± 1.0 mm at 2 m height	Plumb line, ruler
	Deviation from horizontal	± 1.0mm at 3m length	Level, ruler
	The gap between the building wall and the deck	No more than 150 mm
	Linear dimensions	Up to 50 m - ± 1%	Laser tape measure DISTO
Fastening the scaffolds to the wall	Force pulling the anchor out of the wall	Not less than 300 kgf	Cork control device
Laying the flooring	The gap between the boards	No more than 5 mm
	Board protrusions	No more than 3 mm
	Overlapping by joints of support flooring	Not less than 200 mm	Metal ruler
Scaffolding grounding device	Earth resistance	No more than 15 Ohm	Tester Sch4313

5. The need for means of mechanization, tools, inventory and fixtures

The need for basic means of mechanization, tools, inventory and fixtures is shown in Table 5.1.

Table 5.1


Name	Type, brand, GOST, N drawing, manufacturer	Technical specifications	Appointment
Roof crane	"Pioneer" CJSC "TEMZ" TL-12	Lifting capacity 150-500 kgf	Raising and lowering the components of the scaffolding, facade elements
		Tractive effort 250 kgf
Plumb line, cord	OT400-1, GOST 7948 Three-strand nylon cord	Plumb bob weight no more than 0.4 kg, length 98 m. Cord length - 5 m, diameter 3 mm	Layout of grabs, check of verticality
Laser level	BL 40 VHR SKB "Stroypribor"	Measurement accuracy 0.1 mm / m	Measuring heights
Laser level	BL 20 SKB "Stroypribor"	Measurement accuracy 0.1 mm / m	Checking horizontal planes
	Interskol DN 1000-ER	Power 1.0 kW, drilling diameter up to 25 mm	Drilling holes in the wall
Steel tape measure	Р20УЗК, GOST 7502	Length 20 m, weight 0.35 kg	Measurement of linear dimensions
Screwdriver with tip	Screwdriver Pro LLC "INFOTEX"	Reversible lever	Screwing - loosening screws
Device for pulling out the dowel from the wall		Measurement limits 100-500 kgf Dimensions: 1240x1200x175 mm Weight - 7.8 kg	Measuring the strength of scaffolding to the wall
Fencing of the work site		Inventory	Work safety
Protective mesh for scaffolding	4.603; 4.504; 4.501.1 by Apex, Werth or others	From polymer fibers	Protection against falling objects from a height

6. Occupational safety and health

When organizing and carrying out work on the installation of scaffolding, the requirements of SNiP 12-03, SNiP 12-04, GOST 12.4.011 must be met.

On the scaffolding, the layout and the values \u200b\u200bof the permissible loads on the scaffolding should be posted. More than three people are not allowed to accumulate on the scaffolding.

Workers who have the right to work at height are allowed to install scaffolding Installers must be provided with safety harnesses.

Fire safety at workplaces must be ensured in accordance with the rules of PPB-01.

Electrical safety at workplaces must be ensured in accordance with the requirements of POT R M-016.

When organizing a construction site, a dangerous zone is established against falling objects from the height of the scaffolding, in this example from a height of 25 m, equal to 7 m. The hazardous zone is designated by safety signs and inscriptions of the established form in accordance with GOST 12.4.026. A protective net can be attached to the scaffolding. In this case, the danger zone may not be indicated.

The location and design of the construction site fence are adopted in accordance with the requirements of GOST 23407.

Warehousing and storage of scaffolding components, materials, products and equipment should be carried out in accordance with the requirements of standards or technical specifications for scaffolding, materials, products and equipment, as well as SNiP 12-03.

When working at night, the construction site, scaffolding, driveways and approaches to them must be illuminated in accordance with GOST 12.1.046. Illumination should be uniform, without glare from lighting fixtures.

Scaffolding ladders should be equipped in accordance with GOST 26887. The slope of the ladders to the horizon should be no more than 75 °. Ladders should have non-slip steps.

The lifting of loads onto the scaffolding is carried out by a winch or a roof crane. Lifting loads onto the scaffolding with jib cranes is not allowed.

Lightning protection of scaffolding should be arranged with a grounding resistance of no more than 15 Ohm.

During the installation and dismantling of the scaffolding, electrical wires located closer than 5 m from the scaffolding de-energize.

During a thunderstorm, snowfall and when the wind is more than 6 points, the scaffolding is not installed or dismantled.

During installation and dismantling of the scaffolding, window, balcony and door openings must be closed.

The technical condition of the forests is monitored before each shift and periodic inspections every 10 days. If the scaffolding has not been used for a month, then they are allowed for use after acceptance by the commission. The results of acceptance and inspection are noted in the log book in accordance with GOST 24258.

Forests are subject to additional inspection after rain or thaw, which may reduce the bearing capacity of the foundation.

7. Peculiarities of scaffolding installation on high-rise buildings, on buildings with balconies (loggias)

In the megalopolises of Russia, the volume of construction of high-rise (from 30 floors and above) monolithic reinforced concrete residential and public buildings is growing.

Buildings in the plan have a complex shape with rectangular and oval outlines of the walls, overall dimensions: length along the facade not less than 50.0 m, width - 30 m, height up to 160 m.The thickness of walls and interfloor floors - not less than 200 mm, window and others the openings allow mounting support devices in them for installing scaffolding at a height.

On the facades of these buildings, various works are carried out using scaffolding: finishing, insulation, facing and others. Usual tubular, clamp scaffolding in accordance with GOST 27321, the racks of which are joined by means of branch pipes, are used.

Scaffolding, for example, LSPKh-200-60, are rack-mounted attachments, the step of the tier in height is 2 m, the step of the racks along the wall is 2.5 m, the width of the passage between the racks is 1.25 m. The deck boards can be laid on all tiers at the same time. The rated load is not more than 200 kgf / m. The maximum height of the scaffolding is 60 m.

The scaffolds are assembled from tubular elements: posts and half-posts with a diameter of 60 mm, installed in support shoes with wooden lining, longitudinal ties with a diameter of 48 mm, connected to the posts with clamps, crossbars, fastening the scaffolding to the wall using metal or polymer plugs (dowels). On the extreme sections of the scaffolding, diagonal ties are established using rotary clamps.

Racks and half-racks are joined using branch pipes.

The ties are connected to each other using bolts.

The non-swiveling clamp connects the posts and semi-posts with crossbars and handrails at right angles. The swivel clamp connects racks with diagonal ties at an acute or obtuse angle.

The design of the scaffolding allows the use of various scaffolding schemes for a high-rise building, depending on the configuration of the walls, the height of the building and other local conditions.

Before starting the installation work, carry out the usual preparatory work.

The scaffolding is mounted up to a height of 160 m. A feature of the installation is the use of double racks, as a rule, up to a height of 80 m, and above - single ones. The distance between double posts is taken, as a rule, 300 mm (Fig. 2).

https://pandia.ru/text/80/128/images/image012_31.jpg "width \u003d" 256 "height \u003d" 207 src \u003d "\u003e

Fig. 3. Fastening the scaffolding to the wall through the window opening

Inventory fastening device is made, as a rule, from the same tubular elements as scaffolding.

Elongated transverse ties of the scaffolding are brought into the opening, then longitudinal pipes are laid on them end-to-end against the wall. Fastening of ties and pipes is carried out using clamps or in another way.

If the configuration of the walls does not allow the use of the usual installation scheme with the support of the shoes on the ground, then the scaffolding is installed on the support devices at a height. The supporting devices are mounted on the floor using cantilever beams or on the wall using brackets.

Consider these support devices.

The support device on the floor of two cantilever beams and spacers is shown in Fig. 4.

https://pandia.ru/text/80/128/images/image014_30.jpg "width \u003d" 173 "height \u003d" 246 src \u003d "\u003e

Fig. 5. Supporting device mounted on a reinforced concrete wall with a bracket

To install the bracket in a reinforced concrete wall, a hole is made into which a hairpin is inserted. A rack is hung on the stud, which has lugs at the top and bottom for hinged fastening on the studs of the brace and the beam. Standard shoes are welded to the beam, into which the scaffold posts are inserted and the scaffolding is installed.

Bracket parts are made from rolled steel profiles in two versions. According to the first version, the post and beam are made of channels N 10 - N 16 according to GOST 8240, depending on the load from the scaffolding, and the brace is made of strip steel. Moreover, the beam is welded from two channels. According to the second option, the post is made of two corners N 5 - N 9 according to GOST 8509, and the beam is made of I-beams N 12 - N 18. Strip steel is used for stretching.

The attachment point of the brace on the beam, from the condition of equality of bending moments (economic section of the beam and the least weight) should be at a distance of 4/5 of the beam length from the wall.

Standard stud for fastening the bracket to the wall - with a thread of at least M18.

Studs in the hinges of the bracket can be structurally the same with a diameter in the unthreaded section of at least 28 mm.

Calculations show that each bracket can withstand the load from two scaffolding racks of at least 2400 kgf.

The scaffolding installation scheme on a building with balconies (loggias) is shown in Fig. 6.

Foundation blocks "href \u003d" / text / category / fundamentnie_bloki / "rel \u003d" bookmark "\u003e foundation block type FB weighing 200-300 kg.

Tests of the strength of scaffolding to the wall show that the pull-out force does not exceed the strength of the scaffold to the wall provided by the dowel. In order to increase the safety margin of fastening the scaffolds to the wall, an additional attachment point is arranged at the level of the scaffold outrigger.

8. Technical and economic indicators

HPES table 08-07-001 Installation and dismantling of outdoor inventory scaffolding

Scope of work:

for norms 1-3:

01. Layout of the outdoor scaffolding site. 02. Assembly and installation of inventory scaffolding with the device of decks, fences, ladders and walking ladders. 03. Scaffolding dismantling. 04. Restorative repair of scaffolding parts at each turn. 05. Delivery of finished elements of scaffolding from the on-site warehouse to the facility and their transportation from the facility to the on-site warehouse.

for norms 4, 5:

01. Assembly and installation of inventory scaffolding with the device of decking, fences, ladders and walking ladders. 02. Scaffolding dismantling. 03. Reconditioning repair of scaffolding parts at each turn. 04. Delivery of ready-made scaffolding elements from the on-site warehouse to the facility and their transportation from the facility to the on-site warehouse.

Meter: 100m0 "style \u003d" background: white; border-collapse: collapse "\u003e

Installation and dismantling of outdoor inventory scaffolding up to 16 m high:

tubular for masonry cladding

tubular for other finishing works

suspended

For each subsequent 4 m of the height of the outer inventory scaffolding, add:

to the norms 08-07-001-01, 08-07-001-02

to the norm 08-07-001-03


Resource cipher	Cost item name	Unit meas.	08-07- 001-01	08-07- 001-02	08-07- 001-03	08-07- 001-04	08-07- 001-05
	Labor costs of construction workers
	Average grade of work
	MACHINES AND MECHANISMS
	Flatbed vehicles, carrying capacity up to 5 t
	MATERIALS
	Details of wooden scaffolding
	Details of steel tubular scaffolding
	Decking boards

(Table HESN 08-07-001 as amended by the Amendments approved by order of the Ministry of Regional Development of Russia dated 01.01.2001 N 339).

List of used literature

SNiP 3.03.01-87 Bearing and enclosing structures.

SNiP 12-01-2004 Organization of construction.

SNiP 12-03-2001 Labor safety in construction. Part 1. General requirements.

SNiP 12-04-2002 Labor safety in construction. Part 2. Construction production.

SNiP II-23-81 * Steel structures.

GOST 12.1.004-91 * SSBT. Fire safety. General requirements.

GOST 12.1.030-81 * SSBT. Electrical safety. Protective grounding, grounding.

GOST 12.1.046-85 SSBT. Building. Construction site lighting standards.

GOST 12.4.011-89 Protective equipment for workers. General requirements and classification.

GOST 12.4.026-81 SSBT. Signal colors and danger signs.

GOST 12.4.059-89 SSBT. Building. Inventory safety fences. General technical conditions.

GOST 24258-88 Paving means. General technical conditions.

GOST 26887-86 Platforms and ladders for construction and installation works. General technical conditions.

GOST 27321-87 Rack scaffolds for construction and installation works. Technical conditions.

Resolution of the Government of the Russian Federation of April 25, 2012 N 390 On fire safety.

POT R M-016-2001 Interindustry rules on labor protection (safety rules) during the operation of electrical installations (as amended on 01.01.2001).

GOST 380-2005 Carbon steel of ordinary quality. Stamps.

GOST 3242-79 Welded joints. Quality control methods.

GOST 3262-75 * Steel water and gas pipes. Technical conditions.

GOST 8240-97. Hot-rolled steel channels. Range.

GOST 8509-93 Equal flange hot-rolled steel angles. Range.

GOST 10704-91. Longitudinal electric-welded steel pipes. Range.

Working documentation and instructions for the use of mounted scaffolding for work on the facades of buildings under construction. - M .: TSNIIOMTP, 1998.

MDS 12-57.2010

Moscow 2010

INTRODUCTION

In the megalopolises of Russia, there is an increase in the volume of construction of high-rise (from 30 floors and above) monolithic reinforced concrete residential and public buildings. On the facades of these buildings, various works are carried out using scaffolding: finishing, insulation and others.

Scaffolding is applicable for buildings with a variety of architectural, planning and design parameters, configuration, height and length.

Forests are indispensable in the cramped conditions of urban development, where they are used as a universal means of paving, as well as for placing building materials and facade structures.

The complexity of scaffolding installation does not exceed, as a rule, 0.6 man-hours per 1 m 2 of the facade area.

Projects for the production of work for the installation of scaffolds are part of the main organizational and technological documents for construction and are in demand by local state supervision authorities when issuing permits for construction work.

The document is applicable directly to the installation of the most widely used scaffolding, manufactured according to the specifications of GOST 27321-87. In the present project for the production of works, tubular, yoke scaffolding was used, the racks of which are joined using branch pipes.

The work production project consists of text and graphic parts. The graphical part is represented by diagrams of nodes, the sequence of installation, fastening the scaffolds to the wall, supporting the scaffold on the floor of the building.

This methodological document is intended to assist the design, engineering and construction organizations in the development of a project for the production of works for the installation of high-rise scaffolding.

The methodological document is based on the results of the work of ZAO TsNIIOMTP and other design and technological institutes, as well as a generalization of the practical experience of installing scaffoldings of OOO REMSTROYSERVIS-R and other Moscow construction organizations.

1 CHARACTERISTICS OF THE BUILDING AND SCAFFOLDING

The residential building is monolithic reinforced concrete in the plan has a complex shape with rectangular and oval outlines of the walls, overall dimensions: length along the facade not less than 50 m, width - 30 m, height - up to 160 m. Thickness of walls and interfloor floors - not less than 200 mm, window and other openings allow mounting support devices for scaffolding at a height.

The project for the production of works for the installation of scaffolding was developed on the basis of a contract, technical specifications and the submitted initial data As part of the technical assignment and initial data: working documentation for construction work on the facade, passport and instructions for the installation of scaffolding, drawings for the building (in the amount required for the installation of scaffolding).

This project for the production of works was developed with the following initial data.

Clamp scaffolding design - inventory, lightweight, collapsible, reusable. The scaffolding turnover is at least 60 times, and the service life is at least 5 years.

Scaffolding, for example: LSPH-200-60 by Metakon, rack-mounted attachment yokes in accordance with GOST 27321. The step of the tier in height is 2 m, the step of the racks along the wall is 2.5 m, the width of the passage between the racks is 1.25 m. decking can be laid on all levels at the same time. The standard load is not more than 200 kgf / m 2. The maximum height of the scaffolding is 60 m.

The scaffolds are mounted from tubular elements - posts and half-posts with a diameter of 60 mm, installed in support shoes with wooden lining, from longitudinal ties with a diameter of 48 mm, connected to the posts with clamps, cross-beams that fasten the scaffolds to the wall using metal or polymer plugs (dowels) ... On the extreme sections of the scaffolding, diagonal ties are established with the help of rotary clamps.

Racks and half-racks are joined using branch pipes.

The ties are connected to each other using bolts.

Plugs are inserted into holes drilled in the wall. Hooks are screwed into the plugs, while the plugs are wedged. The eyelets of the crossbars are put on the hooks, after which the crossbars are fastened with clamps to the posts.

The non-swiveling clamp connects the posts and semi-posts with crossbars and handrails at right angles. The swivel clamp connects racks with diagonal ties at an acute or obtuse angle.

The extreme rows of racks are fastened through one tier in height, the inner rows of racks are fixed in a checkerboard pattern through two tiers in height and through two racks horizontally.

When using scaffolding in accordance with GOST 27321, for example, type LSPKh-200-60 from Metakon, a number of measures justified by calculations are performed for installation on high-rise buildings that are not provided for by the manufacturer.

To increase the bearing capacity of high-rise scaffolding, so-called double racks are used from a pipe with an outer diameter of 60 mm, which are the main element of high-rise scaffolding and the main condition for the installation of standard scaffolding on high-rise buildings. The bearing capacity of the rack should be checked by calculation, the load on the rack should not exceed 3 tf. The actual load on the most loaded racks should be selectively determined experimentally, using devices, for example, special scales, and recorded in the work log.

In addition to this main, the following events are also held.

So, the normative load on forests is not set at 200 kgf / m 2, but reduced, for example, no more than 100 kgf / m 2.

To reduce the load on the scaffolding, according to the calculation, the number of working and protective decks is reduced. In this case, the flooring boards can be laid not on all tiers at the same time, but in turn and in disarray.

Depending on local conditions, it may be necessary to change the spacing of the posts along the wall: for example, not 2.5 m, but 2.6 m or 2.4 m.

The width of the passage between the posts can be taken not 1.25 m, but, for example, 1.31 m.

The scheme of fastening the scaffolds to the wall specified in the manufacturer's instruction manual can be changed.

The scaffolding can be mounted not on an unpaved site (without or with an asphalt concrete surface), but at a height - on support devices made of cantilever beams.

With simple architectural and construction solutions of the building, one or two of the above activities are carried out. Modern architectural and construction solutions of the building are complex, which requires the development of almost all or all of the above measures and their corresponding reflection in the project for the production of works for the installation of scaffolding.

All these measures, as it was said, must be justified by calculations and agreed with the manufacturer.

The implementation of the above measures allows you to apply various schemes for installing high-rise scaffolding, depending on the configuration of the walls, the height of the building and other local conditions.

The draft contains provisions on the organization and technology of scaffolding erection, requirements for the quality and acceptance of work, the need for mechanization means, tools, inventory and devices is determined, the requirements for safety and labor protection are indicated.

When developing the project, the regulatory, methodological and reference documents indicated in the List of used documents were used.

2 LIST OF DOCUMENTS USED

SNiP 3.03.01-87. Supporting and enclosing structures.

SNiP 12-01-2004. Organization of construction.

SNiP 12-03-2001. Labor safety in construction. Part 1. General requirements.

SNiP 12-04-2002. Labor safety in construction. Part 2. Construction production.

GOST 12.1.004-91. SSBT. Fire safety. General requirements.

GOST 12.1.019-79. SSBT. Electrical safety. General requirements and nomenclature of types of protection.

GOST 12.1.030-81. SSBT. Electrical safety. Protective grounding, grounding.

GOST 12.1.046-85. SSBT. Building. Construction site lighting standards.

GOST 12.4.011-89. SSBT. Protective equipment for workers. General requirements and classification.

GOST R 12.4.026-2001. SSBT. Signal colors, safety signs and signal markings.

GOST 12.4.059-89. SSBT. Building. Inventory protective fences. General technical conditions.

GOST 7502-98. Metal measuring tape. Technical conditions.

GOST 7948-80. Steel construction plumb bobs. Technical conditions.

GOST 8240-97. Hot-rolled steel channels. Range.

GOST 23407-78. Inventory fences for construction sites and construction and installation work sites. Technical conditions.

GOST 24258-88. Scaffolding tools. General technical conditions.

GOST 26887-86. Platforms and stairs for construction and installation work. General technical conditions.

GOST 27321-87. Rack scaffolding for construction and installation works. Technical conditions.

PPB-01-03. Fire safety rules in the Russian Federation.

POT R M-016-2001. Interindustry rules on labor protection (safety rules) during the operation of electrical installations.

MDS 12-25.2006. Scaffolding. Installation, calculation, operation. - M .: JSC "TsPP", 2006.

MDS 12-41.2008. Mounting equipment for temporary fastening of prefabricated elements of erected and dismantled buildings. - M .: OJSC "TsPP", 2008.

3 ORGANIZATION AND TECHNOLOGY OF WORK PERFORMANCE

3.1 Preparatory work

3.1.1 Before the start of installation work, preparatory work is carried out:

The scaffolding installation area (as well as approaches to it and nearby territories) is freed from building structures, materials, mechanisms and debris and is fenced in accordance with the requirements of SNiP 12-03. Fences must meet the requirements of GOST 23407; warning signs are installed in accordance with GOST R 12.4.026;

The assembly workers are instructed on the procedure, techniques and rules for assembling and fastening the scaffolds to the wall.

The plan of the scaffolding installation area is given in the project of the production of works on sheets, as a rule, of the A2 (420 × 594) or A3 (297 × 420) format. In fig. 1 shows as an example a fragment of the plan of the scaffold erection zone on the plot corresponding to the factory set of scaffolds. The symbols for RD-11-06 show scaffolding, the border of the dangerous zone when an object falls from the scaffolding layer, and temporary fencing of the installation area.

The border of the dangerous zone is established by calculation according to RD-11-06, depending on the height of the scaffolding tier.

SYMBOLS:

Figure: 1

3.1.2 Inspection, control and assessment of the technical condition of the components of the mounted scaffolding are carried out. Damaged components must be discarded.

Components sorted by detail are laid along the walls.

3.1.3 Preparation for work, installation and start-up of lifting mechanisms (roof crane, jib crane, winch) for lifting and lowering the scaffolding components are carried out. These works are carried out in accordance with the instructions of the lifting equipment manufacturers.

3.1.4 Preparation of mechanization equipment (hand-held drilling machines, perforators, rammers, etc.) and tools is carried out, their completeness and readiness for work are checked.

3.1.5 To support the scaffolding along the facade, a site with a width of at least 3 m with an asphalt concrete surface or a planned and rammed unpaved site is prepared. The bearing capacity of the sites is checked by calculation. Water drainage should be arranged from the site. If the soil is wet, then compaction is carried out with crushed stone, broken brick, concrete.

If there is a difference in height, then the area under the scaffolding along the facade is aligned horizontally in the longitudinal and transverse directions. To level the height difference, standard concrete slabs and boards with a thickness of at least 40 - 50 mm can be used.

3.1.6 The marking of the installation points of the anchor plugs on the wall of the building is carried out in accordance with the working drawing on the wall or "in place".

The distance of the anchor plug installation point to the opening must be at least 150 - 200 mm. The horizontality of the extreme points is determined using a level, the points are marked with indelible paint. At two extreme points, using a laser level and a tape measure, determine and mark with paint intermediate points for installing anchor plugs. Then, at the extreme points of the horizontal line, vertical lines are determined. Mark the installation points of the anchor plugs on the extreme vertical lines with indelible paint.

3.2 Main works

3.2.1 Installation work from the zero mark is carried out with grippers, taking into account, as a rule, the use of one set of scaffolds supplied by the manufacturer for gripping. The volume of capture is usually set no more than 50 m along the facade of the building and no higher than 60 m.When erecting scaffolds from a mark of 60 m and higher, the height of the capture is taken to be no higher than 20 m.

To speed up the erection of scaffolds (in the presence of several sets of scaffolds), the work can be performed by several parallel grabs.

Independent parallel gripping can be organized when the scaffolding is mounted on a support device made of cantilever beams, which is installed on an interfloor ceiling at a height, as a rule, above 60 m.

3.2.2 When using double racks up to a height of 80 m, and higher - single scaffolds are mounted at a height of 160 m. The distance between double racks is taken, as a rule, 300 mm (Fig. 2).

If the wall configuration does not allow the application of such a scheme, then the scaffolding is installed on the above-mentioned support devices on the floor of the building. In this case, the height of the capture is taken to be no higher than 20 m.

Figure: 2

3.2.3 The scaffolding is erected, according to the manufacturer's instructions, in tiers for the length of the grip.

The technological process of installation consists of assembling the first, second, third and other tiers, attaching the scaffolding to the building and mounting support devices at a height.

3.2.4 Scaffolding tiers are assembled as follows. Shoes with screw height adjustment are installed on a prepared, horizontal platform (see section 3.1).

The difference in height in the direction along the wall is leveled by laying concrete slabs and board linings.

Under the shoes of each pair of racks, a board lining with a thickness of at least 40-50 mm is laid in the transverse direction. The installation of the shoes is shown in Fig. 3, a.

The assembly of the main parts of the tiers is carried out in the following sequence.

Double racks of the inner and outer rows of scaffolds are installed in the shoes (Fig. 3, b).

Transverse and longitudinal ties are installed on the inner and outer rows of racks for the supports of the first assembly tier (Fig. 3, c).

At each rack, shields are laid on the longitudinal supports of the first assembly tier.

From the platforms of the first assembly tier, longitudinal ties of the first working tier are installed and holes for plugs (dowels) are drilled in the wall for fastening the cross ties of the first working tier.

Plugs (dowels) are inserted into the holes and the cross ties are fixed to the wall.

From the platforms of the first erection tier, fences of the first working tier are installed, corner posts are built up, the boards of the erection tier are shifted to the flooring of the first tier. The flooring is equipped with a side railing 150 mm high.

Racks are built up from the flooring of the first tier, a second assembly tier is installed, from which the second working tier is assembled.

The assembly operations for subsequent tiers are repeated.

Figure: 3

3.2.5 Fastening of the scaffolding to the building is carried out to a reinforced concrete wall with a thickness of at least 200 mm using factory metal plugs or polymer dowels and through openings (window, door, balcony).

Fastening of scaffolds with dowels is shown in fig. 4.

Figure: 4

Dowels, for example, type MGD 14 × 100, with a MUNGO MGV 12 × 350 bolt with a ring, are fixed in the wall after four meters in a staggered manner according to the intended attachment points. The diameter and depth of the hole in the wall must correspond to the values \u200b\u200bspecified in the factory instructions.

The strength of fixing the dowels in the wall is checked by calculation and must be tested selectively using a device (device) for pulling the plug out of the wall. The pull-out force from concrete must be ensured at least 300 kgf.

If the hole was drilled in the wrong place and you want to drill a new one, then the latter should be at least one depth of the drilled hole from the wrong one. This rule is not necessary if the wrong hole is pre-concreted or filled with a polymer composition of the same strength.

The holes are cleaned from drilling waste (dust) with compressed air.

The dowel is inserted into the prepared hole and knocked out with an assembly hammer.

The fastening of the scaffolding to the wall through the window opening is shown in Fig. five.

Figure: five

Inventory fastening device is made, as a rule, from the same tubular elements as scaffolding.

3.2.6 The support device is mounted at a height from two cantilever beams and spacers. The beams are laid on the floor through sheet metal lining so that the length of their cantilever part allows the scaffolding to be installed at a distance of 600 mm from the wall to the axis of the inner pillar. Then, on the opposite ends of the beams, posts with screw mechanisms are installed. The upper supports of the uprights with wooden spacers are brought to the ceiling. With the help of screw mechanisms with a tightening torque of at least 5 kgf m, the racks are abutted against the ceiling and beams, pressing them against the ceiling and at the same time fixing the supporting device in the opening.

To fasten the scaffolding to the support device, hinges welded to the beams are used.

As cantilever beams, channel according to GOST 8240 is most often used. Channel number (from No. 12 and more) is selected by calculation depending on the load from the scaffolding, which is determined by direct summation of the weight of the scaffold parts (no more than 20 m high) and the working load. The weight of the cantilever beam should not exceed 140 - 150 kgf on condition that the team of installers performs the installation operations manually. Therefore, the number of the channel must correspond to the minimum allowable safety factor of the cantilever beam.

For the spacer posts, telescopic mounting posts with a screw mechanism for adjusting the height of the supports are used. The main parameters of the racks: height up to 3100 mm, thrust force from 3000 to 5000 kgf (see MDS 12-41).

The values \u200b\u200bof the spacer forces from the racks transmitted to the interfloor floors should be determined by calculation and selectively verified experimentally. The values \u200b\u200band places of application of these forces from the racks must be agreed with the organization - the building designer and entered in the work log. If it is necessary to temporarily strengthen the floors, mounting telescopic racks are installed on the underlying floors.

3.2.7 Lifting of the scaffolding components to the mounting horizon is carried out using winches installed on the ground, roof cranes and jib cranes installed on the floors in the openings of buildings.

In this case, the speed of movement of the cargo rope must be at least 50 m / min. To eliminate dynamic loads during acceleration and deceleration of the load, the speed of movement of the load rope should have a smooth frequency control.

Figure: 6

Dismantling of scaffolds for their rearrangement to a new grip is carried out in the reverse order of their installation, that is, starting from the upper tier. Remains of building materials, inventory and tools are removed from the flooring. Descent of the dismantled scaffolding components is carried out using the above winches and cranes.

4 REQUIREMENTS FOR QUALITY AND ACCEPTANCE OF WORKS

4.1 The quality of scaffolding erection is ensured by the current control of technological operations of preparatory and main works, as well as during acceptance of works. Based on the results of the current control of technological operations, certificates of inspection of hidden works are drawn up: for the strength of fastening plugs for scaffold anchors in the wall, for the stability and strength of fastening of the scaffold support devices at a height.

4.2 In the process of preparatory work, check:

The readiness of the wall and structural elements of the building, means of mechanization and tools for installation work;

Condition of scaffold parts (dimensions, absence of dents, bends and other defects in scaffolding parts);

The condition of the parts of the supporting devices (no defects in the cantilever beams and racks, the reliability of the loops of the beams);

Smoothness and strength of the base points on which the shoes are installed.

4.3 During installation work, check:

Accuracy of wall marking;

Correct and reliable installation of scaffolding shoes on the base;

Diameter, depth and cleanliness of holes for anchor plugs;

Anchoring strength;

The verticality of the racks and the horizontalness of the ties, scaffolding flooring.

Scaffolding horizontality in longitudinal and transverse directions is ensured by level, verticality - along a plumb line.

When assembling the scaffolding, it is necessary to ensure that the racks enter the nozzles to the projected length.

When laying the flooring, the strength of the fastening and the absence of the possibility of movement are checked.

4.4 When accepting the work, the acceptance committee inspects the mounted scaffolding as a whole and especially carefully the attachment points and interfaces.

Scaffolding horizontality and verticality are checked using geodetic instruments.

Defects detected during inspection are eliminated.

The railing must withstand a concentrated load of 70 kgf applied to them in the middle and perpendicularly.

Bearing horizontal ties must withstand a concentrated load of 130 kgf applied in the middle.

4.5 Acceptance of the mounted scaffolding is drawn up by the acceptance certificate of work. The certificate of acceptance of work is accompanied by acts of inspection of hidden works (according to clause 4.1).

4.6 The quality of scaffolding installation is assessed by the degree of compliance of the actual parameters and characteristics with the design ones specified in the design and normative-technical documentation.

The main monitored parameters and characteristics, methods of their measurement and evaluation are shown in Table 1.

Table 1

Technological operations	Controlled parameter, characteristic	Allowed value, requirement	Control method and tool
Marking extreme points horizontally	Accuracy of marking
Marking extreme points vertically			Theodolite
Marking intermediate attachment points			Level, plumb line, tape measure
Drilling holes for anchor plugs (dowels)	Depth H	H \u003d screw length + 10.0 mm
	Diameter D	D \u003d screw diameter + 0.2mm	Depth gauge, inside gauge
	Distance to the opening, corner of the building	Not less than 150.0 mm
	Hole cleanliness	Dust free	Visually
Installation of shoes	Board lining thickness		Metal ruler
Assembling scaffolding sections and tiers	Deviation from verticality	± 1.0 mm at 2 m height	Plumb line, ruler
	Deviation from horizontal	± 1.0mm at 3m length	Level, ruler
	The gap between the building wall and the deck	No more than 150 mm
	Linear dimensions	Up to 50 m - ± 1%	Laser tape measure DISTO
Fastening the scaffolds to the wall	Force pulling the anchor (dowel) out of the wall	Not less than 500 kgf	Force measuring device
Laying the flooring	The gap between the boards	No more than 5 mm
	Board protrusions	No more than 3 mm
	Overlapping by joints of support flooring	Not less than 200 mm	Metal ruler
Installing racks	Torque		Torque wrench
Scaffolding grounding device	Earth resistance	No more than 15 Ohm	Tester Sch 4313

5 NEED FOR MECHANIZATION MEANS, TOOLS, INVENTORY AND DEVICES

The need for fixed means of mechanization, tools, inventory and fixtures is shown in Table 2.

table 2

Name	Type, brand, GOST, drawing No., manufacturer	Technical specifications	Appointment
Roof crane	Type "Pioneer", CJSC "TEMZ"	Lifting capacity 150 - 500 kg	Ascent and descent of scaffolding components, facade elements
Frequency-controlled winch	LCHS-3 type	Traction force up to 250 kgf
Plumb line, cord	OT400-1, GOST 7948 Three-strand nylon cord	Plumb line weight no more than 0.4 kg, length 98 m. Cord length - 5 m, diameter - 3 mm	Layout of grabs, check of verticality
Laser level	BL 40 VHR SKB "Stroypribor"	Measurement accuracy 0.1 mm / m	Height measurement
Laser level	BL 20 SKB "Stroypribor"		Checking horizontal planes
	Interskol DU 1000-ER	Power 1.0 kW, drilling diameter up to 25 mm	Drilling holes in the wall
Device for measuring the load on the scaffold posts (scales)	Р20УЗК, GOST 7502	Measurement range 1.5 - 4.5 tf, weight 0.35 kg	Rack Load Control
Torque wrench		Measurement range 3 - 8 kgf m, weight 3.5 kg	Control of the fastening strength of the scaffolding support devices
A device for measuring the force of pulling out a plug (dowel)		Measurement limits 100 - 400 kgf. Dimensions: 1240 x 1200 x 175 mm. Weight - 7.8 kg	Control of the strength of scaffolding to the wall
Fencing of the work site		Inventory	Work safety
Protective mesh for scaffolding	Types 4.603; 4.504; 4.501.1 firms Apex, Vert or others	From polymer fibers	Protection against falling objects from a height

6 SAFETY AND LABOR PROTECTION

6.1 When organizing and carrying out work on the installation of scaffolding, the requirements of SNiP 12-03, SNiP 12-04, GOST 12.4.011 must be met.

On the scaffolding, the layout and the values \u200b\u200bof the permissible loads should be posted. No accumulation of three or more people on the scaffolding is allowed.

Workers who have the right to work at height are allowed to install the scaffolding. Installers must be provided with safety harnesses.

6.2 Fire safety at workplaces must be ensured in accordance with the rules of PPB-01.

6.3 Electrical safety at workplaces must be ensured in accordance with the requirements of GOST 12.1.019, GOST 12.1.030, POT R M-016.

6.4 When organizing work in the installation area, a dangerous zone is established against falling objects from the height of the scaffolding. The hazardous area is designated by safety signs and inscriptions of the established form in accordance with GOST R 12.4.026.

In each specific case, the project for the production of work should provide for such measures so that the danger zone does not go beyond the fenced area of \u200b\u200bscaffolding.

A protective net can be attached to the scaffolding. In this case, the danger zone may not be indicated.

The location and design of the fencing of the installation area should be taken in accordance with GOST 23407.

6.5 Warehousing and storage of scaffolding components, materials, products and equipment must be carried out in accordance with the requirements of standards or technical specifications for scaffolding, materials, products and equipment, as well as SNiP 12-03.

6.6 When working at night, the installation area, scaffolding, driveways and approaches to them must be illuminated in accordance with GOST 12.1.046. Illumination should be uniform, without glare from lighting fixtures.

6.7 Scaffolding ladders should be equipped in accordance with GOST 26887. The slope of the ladders to the horizon should be no more than 75 °. Ladders should have non-slip steps.

6.8 The lifting of loads onto the scaffolding is carried out by a winch or a roof crane. The lifting of loads onto the scaffolding with tower cranes is unacceptable.

6.9 Lightning protection of scaffolding should be arranged with grounding resistance no more than 15 Ohm.

6.10 During the installation and dismantling of the scaffolding, electrical wires located closer than 5 m from the scaffolding are de-energized.

During thunderstorms, snowfalls and winds exceeding 6 m / s, scaffolding is not erected or dismantled.

6.11 The technical condition of the forests is controlled before each shift and periodic inspections every 10 days.

Particular attention should be paid to measuring and controlling the actual loads on the studs and shoes, pulling the forces of the anchors from the wall. At the same time, measurements and assessment of the deformations of struts and shoes with wooden lining, cross members and anchors and their relative movement should be made.

If the scaffolding has not been used for a month, then they are allowed for use after acceptance by the commission. The results of acceptance and inspection are noted in the log book in accordance with GOST 24258.

Forests are subject to additional inspection after rain or thaw, which may reduce the bearing capacity of the foundation.

In our company, you can order PPR for the installation of scaffolding and scaffolding; we always meet deadlines, and our specialists have extensive experience in the design of PPR.

PPR for the installation of scaffolding is a package of documents that includes diagrams and technological instructions for the implementation of various processes at the facility being built / repaired. Scaffolds are auxiliary structures with the help of which facade, installation and other dangerous work at height is carried out. Therefore, the preparation of PPR for their installation is a mandatory measure that regulates the procedure for carrying out all engineering work, sets the construction timeframe, and also describes the existing risks and methods of ensuring safety at the construction site.

The cost of preparing a project for PPR for forests - from 30,000 rubles

The financial issue of the development of project documentation depends on the characteristics of the initial data and wishes that the customer will indicate in the terms of reference. The main factors affecting the cost:

TEP (technical and economic indicators);
the complexity of installation processes (difficult building, a large number of floors, the presence of overhanging or protruding parts of the structure, the need for the arrangement of multi-post scaffolding, etc.);
development urgency requirements.

Starting information for the project

When drawing up a PPR for the installation of scaffolding, the type of development, as well as the specifics of the planned work, are taken into account. The design of this auxiliary device includes many tiers and sections for organizing several workplaces at once at a height, located both in the vertical and in the horizontal plane. Scaffolding is indispensable for the construction and reconstruction of multi-storey buildings. The most functional is the rack-mount attached type of scaffolding, which is used for:

masonry and facing masonry with the use of small-sized materials (bricks, small-sized blocks, etc.);
repair and insulation works;
reconstruction of facades;
painting, plastering and other finishing processes.

The choice of the type of scaffolding is carried out based on the technical characteristics of the serviced facility and economic feasibility. The main parameters of auxiliary structures are their maximum height and the permissible level of load on the deck. The PPR for forests must also indicate:

the number of used mounting elements;
permissible weight of individual parts of the structure;
cost of work;
labor intensity of installation.

Documents for PPR

PPR for scaffolding is created on the basis of the available working documentation. The efficiency of installation work and the safe operation of auxiliary structures depends on the correct preparation of the project. To start creating a PPR, the following documents are required:

terms of reference from the customer;
POS (construction organization project);
data on the layout of the building and the characteristics of the facade;
site plan with its topographic and engineering parameters.

PPR sections

To install scaffolding, the project for the production of work must be coordinated with the relevant authorities. PPR includes the following mandatory sections:

scheduling;
construction master plan;
technical maps of works on scaffolding;
safety standards and labor protection;
basic instructions for the production of work;
measures for industrial safety and environmental protection.

PPR for the installation of scaffolding includes a text and graphic part. The latter contains drawings and diagrams that accurately represent the stages of installation of auxiliary building structures. The developer specifies the areas for attaching the scaffolding to the building and hazardous areas where reliable fixation or safe location of workers is impossible. Composition of the graphic part:

construction master plan;
scaffolding installation plan;
facade diagrams with marked fastening points of structures.

The text part is an explanatory note that regulates:

standards for the installation and dismantling of construction forests;
organizational and technological parameters of work performance;
requirements for quality and acceptance of works;
safety and labor protection rules at the facility;
a list of the necessary inventory, tools, special devices and means of mechanization.

Thanks to the vast experience in this area, our company guarantees the prompt preparation of PPR for the construction of scaffolds and scaffolds in full compliance with existing standards.

The scaffolding consists of the most important stages in the selection of the required brand, fastening structures to walls and other structural elements of buildings and structures. Scaffolding and scaffolding are used at every site and almost nowhere can be done without them. The following varieties are used:

frame (LRSP), consisting of ready-made welded frames (individual elements), from which the scaffolding is assembled;
pin (LSh, LSPSh) - a structure of racks with pins, crossbars and jibs, providing a single rigid system;
clamp (LH, LSPH) - assembly is carried out using clamps, which greatly complicates the process of their assembly, but allows you to assemble a scaffold structure of any shape;
wedge (CL) - represent the same spatial-tiered system as the previous ones, but differ in the presence of an adjustable wedge-shaped connection;
scaffolding towers, both mobile, equipped with wheels, and stationary - represent one section of scaffolding assembled to the required height; they are most often used for anti-corrosion and fire protection of building structures.

All scaffolding is intended both for finishing, repair, and for a complex of installation and dismantling works, brickwork of walls, for laying pipelines and cables along ramps, installation of video surveillance systems on buildings, etc. their application. Separately, the PPR should include flow charts for the assembly of the structures themselves.

The graphic part of the PPR for the installation of scaffolds should provide for the boundary of the dangerous zone of departure of falling objects, and if it is necessary to reduce it, then using protective nets. In accordance with the rules for labor protection at height, fences are taken into account for the safe production of work. In the detailed design for the production of works, instructions are given on the purpose of paving means for their use only when they were provided. When developing documentation, we take into account all applicable labor protection rules in construction and work at height.

Order PPR for the installation of scaffolding

To receive a commercial proposal for the development of PPR and technical maps for the device of scaffolding, send us a working draft by e-mail:. This will be enough to get all the information from us on the timing, cost of drawing up a set of work production projects and technological maps.

You can see the cost, and download the terms of reference for development. It is not necessary to fill in the TK, you can describe your wishes in the body of the e-mail letter.

Technological maps for scaffolding

The technological maps for the device and operation of the scaffolding provide for all assembly activities in accordance with the manufacturer's instructions. The assembly stages should include a complete complete set of the object with the required number of elements, depending on the type of scaffolding used:

foot pads for posts with adjustable installation height on uneven surfaces;
ordinary and additional vertical racks;
horizontal and lateral ties for fastening the racks to each other and creating spatial rigidity of the structure;
finished staircases for moving on tiers;
decking on tiers from a board or inventory factory execution;
anchor fasteners for fastening scaffolds to structures of buildings and structures;
fastening elements (clamps, cotter pins, hardware, etc.).

The technological map for the installation of scaffolds is developed with reference to a specific construction object. A prerequisite is the installation site, the definition of the boundaries of the hazardous zone, the installation of protective fences, fastening to the existing structural elements of buildings and structures. The selection according to the carrying capacity is carried out based on the bearing capacity of the paving means and the need for simultaneous work from several tiers.