How to evaluate the manufacture of wooden formwork in the estimate. The cost of concrete work, reinforcement and installation of formwork. J. flights of stairs

§ E4-1-34. Installation and dismantling of wooden and wood-metal formwork

A. FORMWORKING OF FOUNDATIONS, ARRAYS, PILLARS

Guidelines for the application of standards

The norms provide for the installation of inventory wooden or wood-metal panel formwork or formwork from individual boards strip foundations, free-standing foundations for columns, massive foundations (arrays) and under-columns.
Formwork of strip foundations is installed from panels or two rows of parallel boards, fastened with stakes, struts and struts.
Before installing the formwork, the position of the wire axis stretched over the pit is transferred to the ground with a plumb line. On both sides of the axis, the position of the side panels of the formwork is marked with a measuring rod. Every 5-6 m along the length of the pit, stakes are hammered at the ends of the measuring rail, to which shields are attached and connected with couplers, fixed with wedge clamps, and temporary spacers are installed. After installing the shields, the contractions are hung on them and inventory struts and screw jacks are installed.
The formwork of the under-columns is installed from panels, connected before installation into rectangular boxes using wire ties and spacers. Two jumpers are laid on the box of the lower step to the width of the next step.
The boxes of the second and overlying steps of the pedestal have elongated bottom boards, with the help of which they rest on the underlying boxes.
To form a cup under the prefabricated column, metal, wooden or combined blocks are installed - nest formers, which, with the help of two welded steel corners or two nailed bars, rest on the formwork of the upper step of the column.
To put the box in place, forming the formwork of the stage of the column, two bars are nailed to it crosswise, the edges of which must strictly coincide with the axes of the box. From the wire axles stretched over the pit, two plumb lines are lowered. After that, the box is fixed in place with the help of stakes and struts, the bars are removed. The upper boxes and the pedestal cup are installed on the lower boxes in the same way and secured in place with nails.
Formwork of foundation arrays large sizes installed in the form of frames of beams, logs and boards on the edge, fixed with rods or spacers, with the laying of shuttering boards inside the frame.
To install the formwork of an array that has a complex shape in terms of plan, its outline is preliminarily outlined with the help of guide boards. To do this, when the array is located directly on the ground, stakes are driven into the ground, and during concreting, wooden corks. Guide boards are nailed to these stakes or plugs, using which the frame ribs are installed, which are fastened in accordance with the drawings. Formwork panels are fastened to the ribs with nails and secured from falling inside with temporary spacers and struts.
The scope of work for dismantling the formwork for all structures is generally accepted.

Scope of work

When installing formwork

1. Checking the markup along the axes and marks.
2. Installation of shields.
3. Installation of formwork fasteners with spacers, ties, props, struts, wedges, wedge clamps or tension hooks.

5. Installation of a ready-made nest-forming block (for the formwork of the under-column).

When dismantling the formwork

1. Removal of fastening elements with cutting of wire ties and twists.
2. Removing shields, boards, clamps, frames.
3. Lowering the formwork elements.
4. Sorting, cleaning formwork elements from adhering concrete and pulling out nails.
5. Carrying the formwork elements to the place of storage and stacking.

Table 1

The composition of the link

table 2

Note. The norms provide for the installation of rectangular shields. When installing trapezoidal shields N.vr. and Rass. multiply by 1.25 (PR-1).

When installing the formwork of massive foundations under technological equipment of complex configuration, formwork structures should be divided into separate structural elements, the formwork of which is normalized according to the relevant paragraphs of Ch. one.

B. COLUMN AND FRAME FORMWORK

Guidelines for the application of standards

The norms provide for the installation of formwork for columns and frame racks in blocks (boxes or two L-shaped semi-blocks), which are assembled from formwork panels fixed with clamps with wedges.
Under the formwork block, a frame is laid on the sub-column, which is verified by risks and marks, and fixed. The assembled block (box) is installed in a frame, aligned and fixed with struts. Blocks up to 3 m high are installed manually, with a higher block height, the installation is done by crane. The second and subsequent tiers of column formwork are installed from the scaffold.

Composition of the work

1. Installation of frames with alignment.
2. Assembly of formwork blocks (or L-shaped semi-blocks) from boards.
3. Installation of the block in the frame with alignment along the axes.
4. Installation of clamps with fastening.
5. Fixing the installed block with struts.

Table 3

Time limits and prices per 1 m² of formwork surface in contact with concrete

Notes: 1. When installing the formwork of columns or racks of variable section as part of a carpenter's link 4 razr. replace with a carpenter 5 razr., and Rast. recalculate columns "a" (PR-2).
2. When installing the formwork of round and multifaceted columns, take the norms as for rectangular columns with the same cross-sectional perimeter, multiplying N.v. and Rass. columns "a" by 1.4 (PR-3).
3. For the installation of formwork for the capitals of columns of beamless ceilings per 1 m2 of the surface of the formwork in contact with concrete, take N.v. 0.4 man-hour 0-28.6 (PR-4).
4. For the installation of the formwork of one console, take N.v. 0.32 man-hours 0-22.9 (PR-5).

B. FORMWORKING BEAMS, PUNCHES AND CAMs

Guidelines for the application of standards

The norms provide for the installation of panel formwork for beams, purlins and crossbars, consisting of bottom panels, side panels and fasteners. The bottom formwork boards are laid on the tops of the racks of the previously installed supporting scaffolding. The installed side panels of the formwork are fixed from below with clamping boards, and from above with U-shaped clamps and couplers. The installed formwork is verified with a check of the required building lift. The work is done from the scaffold.
When the formwork is located at the height of St. 6 m work is carried out from previously installed scaffolding.

Composition of the work

1. Laying the bottom shields.
2. Installation of side shields.
3. Laying pressure boards with fixing.
4. Alignment of the installed formwork.
5. Fixing the formwork with U-shaped clamps and ties.

Table 4

Time limits and prices per 1 m² of formwork surface in contact with concrete

Notes: 1. When installing the formwork of inclined beams and crossbars N.v. and Rass. multiply by 1.15 (PR-6).
2. When installing beam formwork at ground level, N.T. and Rass. multiply by 0.85 (PR-7).

D. FORMWORK

Guidelines for the application of standards

The norms provide for the installation of panel formwork for ribbed and beamless slabs.
To the edges of the side panels of the formwork of beams, purlins or crossbars, edge-to-edge boards or beams are installed and fixed, on which the circles are installed. Overlapping boards are laid along the circles with laying and fixing frieze boards. The installed formwork of the slabs is verified.
Work on the formwork of floors located at a height of up to 6 m is carried out from the scaffold, at a height of St. 6 m - from previously installed scaffolding or from the flooring laid along the horizontal jointing of the supporting scaffolding.

Composition of the work

1. Installation of undercircle boards with fastening.
2. Installation circled.
3. Laying shields.
4. Formwork alignment.
5. Laying frieze boards with fixing.

Table 5

Time limits and prices per 1 m² of formwork surface in contact with concrete

E. WALL AND PARTITION FORMWORK

Guidelines for the application of standards

The norms provide for the installation of panel formwork for walls and partitions, consisting of frames (for both sides of the wall), formwork panels and fasteners. Racks of frames are installed in two parallel rows on laid guide boards - beacons. The installed frame racks are fixed with struts (with a device thrust bar), horizontal braces, wire or bolt ties, and temporary wooden braces or permanent concrete hollow braces through which the tie rods are passed. Formwork panels are installed with inside frame and partially nailed to the uprights. Installation of wire or bolt ties is carried out through ready-made holes in the shields. Installed frame and all formwork is verified.
The execution of work when installing formwork up to 6 m high is provided from the scaffold, and at a height of St. 6 m - from scaffolding.

Table 6

Norms of time and prices for 1 m2 of walls or partitions (without deducting openings) for column "a" and for 1 m2 of formwork for columns "b" and "c"

Notes: 1. When sheathing the second side, as the concreting proceeds, take N.v. and Rass. under item 2a.
2. When constructing formwork for walls and partitions with an area of ​​up to 5 m2 H.v. and Rass. tab. 6 times 1.3 (PR-8).

E. INDIVIDUAL SMALL STRUCTURES WITH A DEVELOPED SURFACE AREA NOT MORE THAN 1 m²

Table 7

Time limits and prices per 1 m² of formwork surface in contact with concrete

Note. For disassembly of supporting scaffolding and fastenings, add N.v. — 1.9 man-hours, Rass. - 1-27 elements per 100 m (PR-9).

G. STAIRCASES

Composition of the work

1. Preparation of formwork elements with transverse sawing of boards.
2. Installation and fastening of the formwork of the lower, side surfaces of the march and risers with an interface device.
3. Formwork alignment.

Table 8

Time limits and prices per 1 m² of formwork surface in contact with concrete

Concrete work is a long and laborious process that requires skills and knowledge from the performer. Price concrete works depends on many influencing factors, soils, saturation of reinforcement, large sizes, complex geometric shapes etc. The cost of concrete work is on average one fifth of the total construction costs. This is not surprising, because the quality of iron concrete structures the complexity of execution, reliability, service life of the entire structure and the cost of its production directly depend. The foundation is the foundation of your home.

We can always provide you with a detailed estimate for concrete work, putting everything on the shelves. That makes it possible even for an inexperienced eye to assess the objectivity of our assessment.

Correctly calculated and well-executed reinforced concrete structures possess high strength, stability and durability. The cost of concrete work directly depends on a thorough calculation of the strength characteristics of the concrete structure, affecting external factors and materials used.

Price quality styling concrete you can see on my website. I can not imagine big company, in which one department takes an order and randomly directs people to the object. I do my work with diligence and care, as if I were building a house for myself. I form prices for concrete work based on the same principle.

All my clients value quality and come to me because they need great styling concrete at reasonable prices.

The prices for my work are lower than the cost of the same services in construction companies. But you get individual approach and work done with passion. Drawing up an estimate for laying concrete will take you quite a bit of time. Just indicate the positions for which you need to work and the calculator will calculate the cost of concrete laying.

I used the services of the master builder Ilya for the construction of a bath on my suburban area. I was very pleased with the work done, as he is really a professional with a capital letter, all my wishes were taken into account, and the building itself was built strictly within the agreed time!

My mother advised me to use the services of Ilya, since last year his specialists did repairs in her kitchen, and she was very delighted. I liked the fact that all types of work and their cost are listed on the site, that is, you can calculate in advance how much this or that service will cost you.

They made a carport for us next to the company's office. Of course, we designed everything individually, since it was necessary to equip large area and the guys did a great job. The result is a very beautiful dome of cellular polycarbonate which goes well with the building itself.

§ E4-1-37. Installation and dismantling of metal formwork

A. INSTALLATION AND DISASSEMBLY OF THE FORMWORK OF STRIP FOUNDATIONS, ARRAYS AND SEPARATE STEP FOUNDATIONS
FOUNDATIONS UNDER COLUMNS

Guidelines for the application of standards

The standards provide for the installation and dismantling of inventory metal formwork from panels up to 1 m² in area, which are interconnected by double wedge locks or spring clamps. Along the shields, braces are installed, fixed in the corners with wedge locks and bolt ties, passed through ready-made holes in the shields. Under the formwork of the second and subsequent steps of the foundations, support beams are laid, fixed with clamps. The front surface of the shields in contact with concrete is covered with grease. The removed boards are cleared of the remains of concrete.

Scope of work

When installing formwork

2. Laying guide boards.
3. Installation of shields and contractions with fixing.
4. Installation of screeds.
5. Laying support beams.
6. Installation of struts or braces (if necessary).
7. Alignment of the installed formwork.

When dismantling the formwork

1. Removing the formwork attachment.
2. Separation of shields from the concrete surface.
3. Removing the support beams.
4. Cleaning shields from concrete.
5. Lubrication of shields.
6. Warehousing of shields and fixtures.

Table 1

The composition of the link

table 2

B. INSTALLATION AND DISASSEMBLY OF WALL FORMWORKS

Guidelines for the application of standards

The norms provide for the installation and dismantling of a large-panel metal wall formwork by a crane. The formwork of one side of the wall is installed to the entire height of the wall and secured with struts with screw clamps. The formwork of the second side of the wall is installed after the installation of the wall reinforcement or during the concreting of the wall. When installing the panels of the second side of the formwork wall, braces, temporary braces and bolt ties are installed.
Installation and dismantling of the formwork is carried out from the scaffold.

Scope of work

When installing formwork

1. Marking of the formwork installation sites along the center axes.
2. Installation of shields.
3. Fastening shields with bolts.
4. Formwork alignment.
5. Fastening the formwork with braces, braces, spacers and ties.

When dismantling the formwork

1. Removing the struts.
2. Weakening bolted connections shields.
3. Separation of the formwork from the concrete surface.
4. Removing shields and fasteners and laying them in place of storage.
5. Cleaning the formwork.
6. Formwork lubrication.

Table 3

The composition of the link

Table 4

Time limits and prices per 1 m2 of formwork surface in contact with concrete

B. INSTALLATION AND DISASSEMBLY OF COLUMN FORMWORK IN BLOCKS

Guidelines for the application of standards

The norms provide for the installation and dismantling of metal inventory block formwork of columns by a crane.
Formwork installation sites are marked along the center axes, with drawing marks. The formwork block-box is installed from above, after the installation of the column reinforcing cage. Installed block fixed with clamps-struts and verified by the correctness of its installation. When dismantling the formwork, the connecting bolts of the block are removed. The block is slinged, the clamps are removed, the block is separated from the concrete surface and removed by a crane. After bridging, cleaning and lubrication is carried out inner surface block.

Scope of work

When installing formwork

1. Marking and drawing marks.
2. Block installation.
3. Installation and fastening of the clamp.
4. Formwork alignment.

When dismantling the formwork

1. Separation of fastening and removal of a clamp.
2. Cleaning and lubricating the surface of the block.

Table 5

The composition of the link

Table 6

Time limits and prices per 1 m² of formwork surface in contact with concrete

D. INSTALLATION AND DISASSEMBLY OF THE FORMWORKS OF HEADS AND GRILLAGES

Guidelines for the application of standards

The norms provide for the installation and dismantling of metal inventory, panel formwork of heads and grillages.
Marking of places for installation of shields is carried out, metal shields and fasteners are brought. The installed shields are connected to each other at the joints with bolts, fastened with wedges and metal plates.
When dismantling the formwork, the fastening elements (bolts, wedges, metal plates) are removed, the formwork panels are separated from the concrete surface, removed, cleaned of concrete residues, lubricated with an emulsion and transferred together with the fastening elements to the storage site.

Scope of work

When installing formwork

1. Marking the places for installing shields.
2. Installation of formwork panels.
3. Installation of fasteners (bolts, wedges and metal plates).

When dismantling the formwork

1. Removing fasteners.
2. Separation of the formwork from the concrete surface and its removal.
3. Cleaning the formwork.
4. Lubrication of shields with emulsion.
5. Carrying and laying shields and fasteners to the place of storage.

Table 7

The composition of the link

Table 8

Time limits and prices per 1 m² of formwork surface in contact with concrete

Concreting includes a fairly wide range of work: from the assembly of formwork and reinforcement to the actual pouring from a mixer. And all this will have to be paid. For the initial calculation, indicative prices will suffice. But it must be remembered that the average figures for a set of measures in total give a large error. The difference with actual costs in some cases can reach 20-25%.

To get more or less accurate figures, it is better to meet with contractors and find out the preliminary cost of concrete work for a specific project, clarifying all the nuances along the way. If you are just estimating the budget for now, it will turn out to be closer to the truth. separate calculations for each stage of construction.

Average cost of formwork installation

The construction of formwork from laminated plywood boards costs about 1000-1200 rubles / m. Applied here manual assembly so the prices are like that. However, even in such a simple matter, there are nuances that affect the cost of contractors' services. For example, the installation of low sides for pouring foundation slab much easier and, accordingly, cheaper assembly complex shapes for monolithic walls.

In general, there is very little information about the prices for formwork as an independent service. Pouring and laying concrete is offered by contractors already taking into account the installation of shields. But you should know that horizontal and sloping decks are always more expensive. vertical railings, since it is more difficult to ensure the correct and stable position of the forms here. If we are talking about assembling / disassembling formwork for the foundation, you will have to pay about 250 rubles / m2, for floor slabs the cost will be at least 300-400.

Reinforcement prices

The laying of metal rods and meshes in the manufacture of concrete structures is a crucial moment. The service life of the entire building depends on how competently the reinforcement is made. Such work is carried out in two ways:

1. Wire knitting - gives a more reliable and high-quality result, but is done exclusively by hand, which increases the cost of such labor-intensive work to 2000-2800 rubles / m2.

2. Welding - usually payment is per centimeter of a seam (20-40 rubles), but when ordering a service, the density of the frame will be calculated for you and the final amount for its installation will be announced. You can call a welder with an hourly rate (about 1000). If the reinforcement of concrete is done manually finished mesh, you will only need to pay for materials and pay 175-250 rubles / m2 for work.

The cost of services is affected not only by the connection method metal rods, but also their diameter, as well as the stacking density. The more builders have to carry heavy reinforcement, the higher you will be billed.

cost of pouring concrete

Here everything is decided by the type of monolithic structure:

• For three-dimensional forms, the laying of concrete from a mixer itself costs 600-900 rubles / cu.
• per square cement screed you will need to pay 150-300 rubles / m2 (depending on the thickness).
• Preparation with lean mortars (footing) costs 200-600 per sq. m of surface. The total amount depends on the presence of reinforcement and the use of a mixer.

The filling price per cube is indicated for bulk structures, whose height is set by the project. When arranging paths, grillages, monolithic armored belts, blind areas and strip foundations, the calculation can be made for linear or square meter. In any case, the amount will have to be clarified with the contractor for each type of work. The average rates for Moscow and the region are as follows:

• Concreting of paths and car entrances - 100-140 rubles / m2.
• Blind area - 130-180.
• Monolithic bowls of fonts, pools, artificial reservoirs – 2800-3400.

But even the figures given may change upwards after a preliminary inspection of the site or refusal to use a mixer. The increase in the cost of services also gives the length of concreting (as in the case of paths), as well as uneven terrain. Another expense item is caring for the monolith, for example, warming up in winter period, which costs 200-400 rubles / m2.

The cost of the work is affected by the method by which the preparation and pouring of concrete is carried out. If the team uses a mixer, the prices for their services will be lower than for manual mixing (1000 rubles / m3), and the quality of the finished monolith will be higher. So that mechanized way wins in every way. However, here much depends on the total volume - the rental of equipment should pay off, so it is worth calculating both options.

For example, delivery of concrete by a mixer increases its cost by 400-700 rubles per cubic meter. Using the pump for 8 hours will pull another 10,000-15,000. Also, the estimate should include the development of soil and the installation of a sand and gravel cushion, if we are talking about building a foundation:

• Digging manually costs 500-900 rubles per cubic meter.
• Mechanized excavation - 200-600.
• Sand and gravel cushion - from 300 to 700.
• Backfill with compaction - from 350.

Comprehensive Services

For individual structures, you can find indicative prices for concrete work, which already includes pouring, reinforcement and formwork.