The Techrent company, which provides services in Moscow and the Moscow region, owns an arsenal of special equipment necessary to carry out installation or dismantling road slabs. Employees of the company will perform the assigned tasks promptly and efficiently, in compliance with safety regulations. The price for the job is available.

Services for the installation and dismantling of road slabs in the company "Techrent"

Laying of road slabs will be carried out by experienced workers using high-tech special equipment.

The technology of installation of road slabs includes:

• alignment ;
• delivery of road slabs by freight transport;
• slab laying;
• rolling of the coating with a roller and loaded dump trucks.

In the park of the company "Techrent" there are mobile cranes, rollers, and trucks - a complete set of special equipment in order to create a smooth and reliable road surface from reinforced concrete slabs.

At your service:

• soil and road rollers Bomag, Hamm, Dynapac;
• truck cranes Zoomloon, "Ivanovets", "Galichanin" and others;
• trucks MAZ and KAMAZ with a carrying capacity of up to 20 tons.

We carefully control the condition of special equipment, it regularly undergoes technical inspection in our own workshop "Techrent". This ensures trouble-free operation. Our employees will carry out the installation of road slabs within the agreed time frame.

Services for the dismantling of road slabs in the company "Techrent"

When dismantling road slabs, you also cannot do without powerful special equipment. With the help of truck cranes and trucks, the workers of the Tekhrent company will remove reinforced concrete slabs on a certain section of the road or completely remove the temporary road.

How much does the installation of road slabs and their dismantling cost in the Tekhrent company

The cost of installation and dismantling of road slabs depends on the scope of work and on what equipment is involved. So, the price for changing the work of a self-propelled crane is from 8 thousand rubles. Prices for the use of the ice rink - 11-13 thousand rubles. for a shift. Ordering freight transport will cost up to 10 thousand rubles. for a shift. At the same time, the price includes the cost of fuel and the payment of the operator or driver.

At a preliminary consultation, having familiarized themselves with the scope of work, Techrent employees will help you correctly select a set of equipment for solving a particular problem and calculate exact price. The final price for 1 sq. m of laid or dismantled road slabs cheaper average cost by market.

Laying of road and airfield slabs PAG.

Our company offers a full range of works on laying road and airfield slabs on a turnkey basis at balanced prices - from the device sand and gravel pillows and preparation of the top layer of soil with the help of a bulldozer - before the actual laying, using a truck crane of the required load capacity. All special equipment necessary for organizing the laying process is present on the balance sheet of the company. It is possible to supply a wide range road slabs of the dimensions and weight you need.
At the preliminary consultation, having familiarized ourselves with the scope of work, the employees of our company will help you choose the right way to lay the road slab and calculate the exact price. The final price for 1 sq. m of laid or dismantled road slabs is cheaper than the average market price.
The advantages of our company include:
Highly qualified employees.
The possibility of laying the road, both from new and used slabs.
Availability of own park road equipment.
Direct contact with manufacturers of building materials.
Affordable prices for laying road slabs.
Turning to us, you can be completely sure that the laying of slabs will be done quickly and efficiently.

Stages of laying road and airfield slabs by the specialists of our company:

Stage 1 - preparatory work: cut off first upper layer soil, and eliminate all the unevenness of the soil, it turns out a kind of "earthen trough". We cover the bottom of the "trough" with a special material - geotextiles for water exchange, soil leaching and protection from plants;

Stage 2 - base device: we make a “pillow” of layers of crushed stone with sand (or brick battle) and sand, which will make the future road resistant to soil influences with a thickness of at least 10-20 cm, while carefully pouring the sand with water and then tamping it.

Stage 3 - slab coating device: this is directly the laying of the plates itself, namely, the sequential placement of the plates with the help of special equipment in a joint or with a gap, then we weld the trailed metal hinges, which are located on the end sides of the plate. (if these loops are on the plates). This is necessary to prevent the spreading of road slabs upon completion of laying and during the subsequent operation of the road. Next, we fill the formed seam between the plates with sand or concrete mortar. As a matter of fact, you can do without it, but then the road will not turn out so even and smooth, and docking nodes will also be visible, which, definitely, will not add beauty to the appearance.

On this, the road, made of road (airfield) slabs, is completed.
These roads differ from concrete ones, firstly, in that you can drive on them immediately after laying. Secondly, road slabs can be removed and reused for laying. And at the same time, their performance will not decrease at all.

The cost of laying road slabs:

Slab laying- one of the most effective ways construction of temporary roads. It does not require large financial investments and helps to put coverage in the shortest possible time where it is needed.

Advantages

The construction of roads by laying large reinforced concrete slabs has a number of significant advantages:

• High speed. There is no need to wait several weeks for the road construction to be completed.
• There is no need to use heavy asphalt paving equipment.
• You can use the coating immediately after the completion of road construction.
• After the need for the coating disappears, it is easily dismantled. Reinforced concrete slabs can be reused later.

Road construction by laying reinforced concrete slabs is carried out everywhere. Such roads can be seen at the entrance to construction sites, in areas with soft, subsiding soil, near parking lots or rural airfields.

Versatility- this is the main difference between this method of road construction. It is possible to lay slabs on almost any soil, which cannot be said about classical asphalting. There is no need to prepare the foundation, and the cost of renting special equipment will be much lower.

Possibility reuse- another plus in favor of the plates. In fairness, it should be noted that used stoves differ from new ones only appearance and minor chips at the joints. At the same time, they cost an order of magnitude less (an average of 40-45%).

The road surface of the slabs is not afraid of any harsh climatic conditions and no sudden temperature fluctuations. It behaves perfectly in the temperature range from -45 to +55 °C. Moreover, the addition of special admixtures to concrete can further expand this temperature Range.

material requirements

There are a number of requirements for road slabs in the organization of temporary entrances to construction sites and industrial facilities. So, in particular, the thickness of these plates should not be less than 14 cm. Inside in without fail reinforcement must be built in, and the density of the finished product must be in the range from 2.2 to 2.5 t/m. As for the form, it can be arbitrary. Some road equipment is better at laying long rectangular reinforced concrete slabs, some - square.

Depending on the operating conditions, the surface of the plates can be smooth or corrugated. Corrugated plates are more protected from ice formation. On the other hand, if caterpillar vehicles will run mainly on access roads, then there is no point in creating a corrugated surface.

Considerable requirements for road construction of access roads are imposed on the quality of concrete.. It is from this material that it directly depends on what loads the future coating can withstand and how well it will resist atmospheric phenomena. It is believed that the optimal for Russia is concrete, which has high class frost resistance (F150). If in the future it is planned to dismantle the slabs and re-construct a road using them, then it is desirable that mounting loops be built into the concrete. They must be in special recesses so as not to interfere with the movement of vehicles after laying.

Varieties of road slabs

Road slabs vary in shape and size. The size is indicated by the manufacturer in meters, and there is a convenient naming system to determine the shape. So, for example, rectangular plates are indicated by the letter "P", hexagonal - "W". There are also more complex names. For example, "PPB" means: a rectangular slab with two combined sides.

When carrying out road construction of temporary access roads, it must be remembered that their strength and performance properties directly depend on compliance with the technology of laying slabs. As in the case of asphalting, soil preparation is far from being of secondary importance.

Soil preparation is carried out in the following order:

• The upper soil layer is removed, and its surface is leveled using road equipment.
• Using the services of special equipment, a trench is torn from 30 to 50 cm deep (depending on the type of soil and the target load on the road surface).
• To insure the access road from erosion and weed germination, geotextiles are laid at the bottom of the dug trench.
• A ten-centimeter layer of crushed stone is poured over the geotextile, and about 20 cm of sand is poured over the crushed stone.
• The sand cushion is poured with water.
• The soil is carefully compacted.

For tamping the soil, you can use the services of special equipment with a vibrating plate. If you need to cover a large area with plates, it is better to use a skating rink. Do not forget to control the level of the ground during the tamping process (for this purpose, use a level and a rope beacon).

After the surface is tamped, the laying of reinforced concrete slabs can begin. If their size does not allow you to manage the services of existing special equipment, you can resort to renting a crane on wheels. To avoid distortions, the first row of road slabs is always laid along the stretched cord.

During the construction of access roads, reinforced concrete slabs can be laid with a gap or close to one another. Sand is poured into the remaining cracks. In order to prevent the appearance of cracks on the road surface, the seams are pre-expanded with a wet mortar, and the slabs themselves are covered with a film.

If heavy equipment is expected to travel on access roads, they need to be strengthened. There are several ways to do this. The easiest is to add cement at the stage of organizing the sand cushion. Often, to improve the strength characteristics of the road surface, the mounting loops of concrete slabs are welded together.

Public corporation
Design and Technological Institute of Industrial Construction

OJSC PKTIpromstroy

TECHNOLOGICAL CARD FOR THE DEVICE OF TEMPORARY ROADS FROM REINFORCED CONCRETE PLATES

113-05 TK

1 AREA OF USE

1.1 The technological map has been drawn up for the construction of temporary on-site, access and intra-quarter roads from precast concrete slabs.

1.2 The scope of work considered by the map includes:

Ground bed device;

The device of the underlying layer of sand;

Laying plates;

Welding brackets and plates;

Seal of joints and seams.

1.3 When binding technological map for a specific object and construction conditions, the following are specified: the direction of installation of the plates and the movement of the crane, depending on the general direction of work on the route, the breakdown into sections and grips in accordance with the project for the production of works. When binding, the scope of work, calculation of labor costs, mechanization means are also specified, taking into account the maximum use of the available fleet of assembly mechanisms.

1.4 The form of using the technological map provides for its circulation in the field of information technology with the inclusion in the database on the technology and organization of construction production of the automated workplace of the construction production technologist (ARM TSP), the contractor and the customer.

2 ORGANIZATION AND TECHNOLOGY OF WORK PERFORMANCE

2.1 Prior to the start of work on the construction of a temporary road, the following work must be completed:

The route of the road is illuminated and broken;

Temporary buildings and structures were installed in the amount necessary for the performance of work;

Mechanisms and tools were delivered to the site;

Lighting of work places and amenity premises has been arranged;

The necessary materials have been brought in.

2.2 During the construction of roads, as well as when they are accepted for operation, the requirements of SNiP 3.06.03-85 "Motorways", SNiP 3.02.01-87 "Earth structures, bases and foundations", SNiP 3.03.01-87 "Bearing and Enclosing Structures".

2.3 Works on the construction of temporary roads are carried out by the in-line method, which ensures uniform and continuous performance of the work of mechanisms and workers. The technological scheme of the road construction from precast concrete slabs is shown in Figure 1.

Figure 1 - Technological scheme of the device of the road from precast concrete slabs

2.4 In case of small volumes of work and in areas of short length, where the use of the in-line method is impractical, the work is carried out by the cyclic method alternately throughout the entire length of the road.

2.5 By the beginning of road works, fencing of work sites should be arranged and signs and information boards should be placed indicating the types of work and the timing of their implementation.

DEVICE OF THE GROUND PLATE

2.6 The construction of the subgrade (trough) is started after cutting the vegetation layer and performing marking geodetic works.

2.7 Cutting of the vegetation layer is carried out by longitudinal passages of the DZ-101 bulldozer. The cut soil is taken out of the site if it cannot be used.

2.8 The width of the trough in the recess should be 0.5 m greater than the width of the cover.

2.9 The mortise trough device technology includes the following operations: cutting the soil and moving it into a cone, loading the soil into dump trucks and removing it on dump trucks, leveling the bottom surface.

2.10 The bulldozer cuts and moves the soil along the trough, forming a cone of the appropriate height. Then, using a PUM-500 loader, the soil is loaded onto dump trucks with its transportation to the designated places.

2.11 To ensure the scope of work on the arrangement of the sandy underlying layer, work on the arrangement of the trough must be carried out ahead of at least one shift.

DEVICE OF SANDY UNDERLYING LAYER.

2.12 The installation of the underlying layer is started after the acceptance of the subgrade. Sand for the underlying layer must have a filtration coefficient in a compacted state of at least 3 m / day.

2.13 The technological process of the sand layer device includes: unloading, distribution and compaction of sand.

2.14 Sand for the installation of the underlying layer is delivered in dump trucks and leveled with a DZ-101 (DZ-101A) bulldozer. The final layout of the surface of the underlying layer for compaction, if necessary, is done manually. The layer thickness in the loose state should exceed the design one, taking into account the loosening factor of 1.1.

2.15 Simultaneously determine the moisture content of the sand. If necessary, the sand is moistened to the optimum value, calculating required amount water according to the formula (t / m 3),

Q = h(W about - We) d ´ 10, (1)

where h- thickness of the poured sand layer, m;

w oand We- respectively optimal and natural humidity in %;

d - volumetric mass of sand.

2.16 Compaction is carried out by a trailed pneumatic roller DSK-1 coupled with a S-100 tractor or platform vibrators.

2.17 Compaction starts from the shoulder to the axis of the road, while each track from the previous pass of the rink must overlap during the subsequent pass by at least 1/3.

2.18 Efficient compaction with a pneumatic roller requires 8 times the number of passes on one track. The final number of passes is set by trial rolling. The results of the trial compaction must be recorded in the general work log.

2.19 Vehicles are not allowed to move along the completed underlying layers in order to avoid disturbing the layer profile and contaminating the material.

2.20 All subsequent work on the construction of the road is carried out after the installation of the underlying layer without a significant gap in time.

DEVICE OF COATINGS FROM PREFACED REINFORCED CONCRETE RECTANGULAR PLATES

2.21 Prior to the installation of the prefabricated pavement, all work related to the construction of the subgrade and the sandy underlying layer must be completed.

2.22 Precast concrete slabs are transported from factories by specially equipped flatbed trucks or slab carriers.

For the construction of temporary roads, slabs produced by the industry and corresponding to GOST 21924.0-84* “Reinforced concrete slabs for urban road surfaces. Specifications” given in Table 1.

Table 1 - Reinforced concrete slabs for temporary roads

2.23 The map provides for the laying of slabs “from wheels”, without reloading the slabs into piles.

2.24 The installation of roof slabs should be started from the beacon row, located along the axis of the roof with a gable transverse profile of the roof and along the edge - with a single-sided transverse profile.

Laying of slabs is planned to be carried out by self-propelled cranes in the direction of the longitudinal axis of the coating. The slabs are installed in the following sequence: the slab is removed from the vehicle with a crane and guided to the place of laying in such a way that the base of the slab is 3-5 cm lower than the surface of the already laid adjacent slabs. The movement of the boom reduces to a minimum the gap in the transverse seam between the stacked and stacked slabs. Finally, the slab is lowered onto the sand layer in such a way that it touches it with the entire sole at the same time.

The longitudinal and transverse seams must match, the width of the seams between adjacent slabs must not exceed 20 mm, and the ledge between the slabs must not exceed 5 mm.

In order to ensure the required evenness of the coating, the slabs should be laid on a leveled sandy layer.

2.25 The final landing of the slabs on the base should be carried out by rolling the coating with loaded cars or rollers on pneumatic tires until the visible sediment of the slabs disappears.

2.26 After rolling, a slab with a smooth bearing surface must be in contact with the base (base layer) over the entire bearing surface. The contact area is checked visually by the imprint on the sandy base after the slab has been lifted. With positive contact of the base with the slab, the latter is finally laid.

2.27 The final processes of the prefabricated coating are welding of butt brackets and sealing of seams. For welding, a welding unit of the SAK-2G-IC type is used, electrodes of the E-42A type with a diameter of 4-5 mm. Welding is carried out with a continuous seam 8-9 cm long with a leg of at least 7 mm (width 0.5 of the diameter of the bracket, height of 0.25 of the diameter with a penetration depth of at least 5 mm).

With gaps between the brackets of more than 4 mm, a steel rod with a diameter of 2-3 mm more than the gap is superimposed on them and welded on both sides.

To form expansion joints every four slabs (24 m), staples must not be welded.

Seams are sealed in the following ways. With the exception of expansion joints, transverse joints are filled with cement-sand mortar for 2/3 of the groove depth, and for 1/3 - with bitumen-polymer mastic. Expansion seams are filled to the full depth with mastic.

Longitudinal seams when welding mounting brackets are filled with cement-sand mortar to the entire depth of the seam. The joints are filled with mastic in two stages: after the mastic settles, during the first joint filling, it is added again and the excess is cut off with a pointed cutter flush with the surface of the coating.

Schemes of organizing jobs for the construction of a temporary road are shown in Figures 2-4.

1 - bulldozer DZ-101; 2 - dump truck ZIL-MMZ-555; 3 - loader PUM-500.
Figure 2 - Organization of the workplace when arranging a trough

1 - bulldozer DZ-101; 2, 3 - road workers; 4 - platform vibrator; ¬ - direction of work.
Figure 3 - Scheme of the organization of the workplace during the construction of the sandy underlying layer

1, 2, 3 - installers; 4 - truck crane; 5 - plate carrier ¬ - the direction of laying road slabs.
Figure 4 - Organization of the workplace when laying road slabs

WORK RECEPTIONS

The methods of work in the performance of work are shown in the figures:

3 QUALITY AND ACCEPTANCE REQUIREMENTS

3.1 During the construction of roads, quality control of work is carried out at all stages of construction.

3.2 During the input control, materials and products for the construction of temporary roads should be accepted according to passports (certificates) and their quality checked in accordance with the requirements of standards or specifications on these materials and products, as well as the instructions given in the drawings of the pavement.

3.3 The technical characteristics of the sand of the underlying pavement layers must comply with the requirements of GOST 8736-93*.

3.4 The technical characteristics of the plates must comply with the requirements of GOST 21924.0-84 *.

Road slabs must have a rough front surface that provides a friction coefficient of at least 0.5.

Permissible deviations from the dimensions of the plates are given in table 2.

Table 2 - Permissible deviations for temporary road slabs

3.5 The magnitude and number of permissible defects in the appearance of road slabs are given in Table 3.

Table 3 - Permissible defects

3.6 When arranging the subgrade and the sandy underlying layer, the degree of soil compaction, the compliance of the profile marks with the design ones, and the evenness of the bases are controlled.

3.7 Size of solid inclusions, incl. frozen clods, in embankments and backfills should not exceed 2/3 of the thickness of the compacted layer, but not more than 15 cm for soil cushions and 30 cm for other embankments and backfills.

3.8 Deviations of the geometric dimensions of embankments:

The position of the axis of embankments of highways - no more ± 20 cm;

The width of the embankments along the top and bottom - no more ± 15 cm;

Elevations of embankment surfaces - ± 5 cm;

The steepness of the embankment slopes - an increase is not allowed.

3.9 The density of the soil of a natural base should be controlled by sampling along the axis of the road and 1.5-2 m from the axis of the edge of the subgrade, as well as one sample in the intervals between them along the width of the poured layer of more than 20 m. depth of 8-10 cm from the surface of the compacted layer. Deviations from the required value of the density index in the direction of decrease are allowed for no more than 10% of the samples and should not exceed 4%. The number of points with maximum deviation should not exceed 10% of total number measurements.

3.10 Control of the width of the section with a transverse and longitudinal slope, the steepness of the slopes of the subgrade, the location and size of the drainage and drainage devices should be made using surveying tools and templates during the production process.

Permissible deviations from the design dimensions should not exceed those specified in Table 4.

Table 4 - Permissible deviations from design dimensions when constructing roads when using sets of machines without an automatic system for setting vertical marks

3.11 The density of the sandy underlying layer is controlled by standard samplers. To measure the filtration coefficients and optimal compaction, at least three samples are taken every 50 m (along the axis and at a distance of 1.5-2 m from the edges of the carriageway). Deviations from the optimal compaction factor should not exceed in absolute value ± 0.02 with samples up to 10%.

3.12 After determining the coefficient of optimal compaction, the sand from every six samplers is tested for filtration.

3.13 Quality control of road pavements made of prefabricated reinforced concrete slabs consists in checking the full support of the slabs on the sandy underlying layer, the evenness of the pavement, the straightness of the longitudinal and transverse rows of slabs, the width of the joints between the slabs, the correct filling of the joints and the composition of the rubber-bitumen mastic used.

3.14 During the operational quality control of works on the construction of roads, it is necessary to control at least every 100 m:

Elevation marks along the axis of the road;

The thickness of the layer of uncompacted material along its axis;

Cross slope;

Evenness (clearance under a rail 3 m long at a distance of 0.75-1 m from each edge of the coating (base) at five control points located at a distance of 0.5 m from the ends of the rail and from each other);

Constantly visually - the integrity of the plates and butt elements, the quality of the welding of the joints and the filling of the seams, the observance of the construction technology;

At least once per shift - the contact of the slabs with the base (underlying layer) by lifting one of the 100 laid slabs;

The excess of the edges of adjacent plates in the longitudinal seams on three diameters per 1 km, and in the transverse seams in 10 joints per 1 km.

3.15 A control check of the contact of the prefabricated pavement slabs with the base should be carried out before welding the butt brackets by lifting one of the hundred laid slabs, but at least 1 time per shift. The excess of the edges of adjacent prefabricated pavement slabs should be checked in three diameters per 1 km. If the height of the ledges between the slabs is more than 3 mm, the slabs are lifted and the sand mixture is removed (or added).

3.16 Controlled parameters, composition and methods of quality control of works are given in Table 5.

Table 5 - Composition of operational quality control of works

4 REQUIREMENTS FOR SAFETY AND LABOR PROTECTION, ENVIRONMENTAL AND FIRE SAFETY

4.1 The device of pavements made of prefabricated reinforced concrete must be carried out in strict compliance with the requirements of SNiP 12-03-2001 “Labor safety in construction. Part 1. General requirements”, SNiP 12-04-2002 “Labor safety in construction. Part 2. Construction production", PB-10-382-00 "Rules for the device and safe operation cranes", fire safety rules provided for in GOST 12.1.004-91 * and PPB 01-03. Responsibility for the state of labor safety and industrial sanitation rests with the heads and chief engineers of specialized construction organizations.

4.2 Workers at least 18 years of age who have passed a medical examination and have a certificate for the right to drive machines and a driver's license are allowed to drive road machines.

4.3 Unloading and distribution road materials it is forbidden to be in the back of a dump truck.

4.4 Drivers of dump trucks delivering the sand mixture to the laying sites are allowed to reverse only at the signal of a road worker.

4.5 Standing on the body of a dump truck during body cleaning is prohibited.

4.6 It is forbidden to be near a moving roller, as well as to light and adjust the nozzles of the asphalt distributor on the go.

4.7 When a number of machines work together, the distance between them must be at least 10 m, and between the motor rollers - at least 5 m.

4.8 To prevent fire, fire extinguishers must be installed on machines with gasoline engines and nozzles, and boxes with sand should be additionally installed on bitumen trucks and asphalt distributors.

4.9 It is prohibited to refuel vehicles with imported fuels and lubricants in the places of road construction works.

4.10 The working area must be fenced off. At nightfall, red signal lamps should be installed in the work area. Lighting lamps with a power of up to 200 W are suspended at a height of 2.5-3 m, and more than 200 W - at a height of 3.5-10 m. The electric lighting project is carried out by the customer or by his order - a specialized design organization.

4.11 Workers must be provided with special clothing and serviceable tools in accordance with applicable standards (GOST 12.4.011-89).

4.12 Excavation in the area of ​​underground utilities (electric cables, gas pipelines, etc.) is allowed only with the written permission of the organization responsible for the operation of these communications. The permit must be accompanied by a plan (diagram) indicating the location and depth of the laying of communications, drawn up on the basis of as-built drawings. Prior to the start of work, it is necessary to install signs indicating the location of underground utilities.

4.13 When delivering materials to construction sites by vehicles, the following rules must be observed:

Persons in charge of unloading should not approach the dump trucks, stand on the wings and wheels, climb into the body until the dump trucks come to a complete stop;

When unloading onboard machines, the sides can be opened after taking appropriate precautions against bruising in case of a possible fall of the goods and the opening sides themselves.

4.14 When installing prefabricated coatings, reinforced concrete slabs delivered to the work site are unloaded by truck cranes directly onto the road surface.

4.15 Persons with certificates for the right to perform installation work are allowed to install the plates.

4.16 When installing construction machines and using Vehicle with a lifting body in the security zone overhead line power transmission, it is necessary to remove the voltage from the overhead power line.

If it is justified that it is impossible to remove voltage from the overhead power line, the work of construction vehicles in the security zone of the power line is allowed to be carried out according to the work permit, provided that the following requirements are met:

a) the distance from the lifting or retractable part of the construction machine in any of its positions to the energized overhead power line must be at least specified in Table 2 of SNiP 12-03-2001;

b) the bodies of machines, with the exception of tracked machines, when they are installed directly on the ground, must be grounded using inventory portable grounding.

4.17 During the production of work on the installation and dismantling of prefabricated coatings, workers must be outside danger zone. It is prohibited to move the crane boom with a plate over the car cabin.

4.18 When installing the slab in place, it is possible to approach it only if the slab is at a height of no more than 50 cm from the base surface.

4.19 Leveling the sand base under the raised slab is allowed only with the help of a trowel mounted on a long handle.

4.20 Workers are prohibited from standing on the slab while it is being laid on the base.

4.22 All persons on construction site are required to wear protective helmets. Workers without protective helmets and other necessary funds protection for work is not allowed.

5 EQUIPMENT REQUIREMENTS

5.1 The need for machines, equipment, mechanisms and tools is determined

taking into account the work performed and technical characteristics according to table 6.

Table 6 - Statement of the need for machines, mechanisms, equipment, fixtures and tools

5.2 The need for materials per 100 m 2 of the road area is presented in table 7.

Table 7 - List of requirements for materials, products and structures

6 TECHNICAL AND ECONOMIC INDICATORS

6.1 100 m 2 of the road area is taken as a unit of measure for compiling the calculation of labor costs and machine time and building a calendar plan for the production of work.

6.2 The cost of labor and machine time for the installation of pavements from prefabricated reinforced concrete slabs was calculated according to the "Uniform norms and prices for construction, installation and repair and construction work", entered into force in 1987, and are presented in table 8.

6.3 The duration of work on the pavement is determined by the work schedule presented in the table.

Technical and economic indicators are:

Labor costs, man-hour ....................................... .........20.58

The cost of machine time, machine-h .............................. 6.54

Duration of work, hour .......................................... 10.8

Table 8 - Calculation of labor costs and machine time for the production of works on the construction of temporary roads from precast concrete slabs

(Final product meter - 100 m2)