The fill of the monolithic interhesion is not the easiest, but really universal and time-tested method.

In this article we will talk about the main construction features and stages of the ceiling device, as well as formwork types, including non-removable.

Typology of buildings and scope of application

The main area of \u200b\u200bthe application of monolithic floors are buildings with supporting walls of brick, block masonry or concrete panels, as well as dome houses. Clearance monolith requirements may be due to:

• non-standard building plan;
• the need to significantly increase the carrier ability of the overlap;
• increased requirements for hydro and noise insulation;
• the need to provide free layout;
• reduction of expenditures on the internal finish.

The fill is made, as a rule, after the end of the construction of the walls of the first floor. However, options for filling monolithic floors are possible in buildings with roof, if required by weather or other conditions. In this case, in the masonry of the lower floor, 2-way beams are mounted on the perimeter of the bearing walls, the crown is poured into the height of the overlap. Also, to enhance mechanical connections, the inner side of the crown is produced by 40-50 cm mortgage reinforcement. Its total section cannot be less than 0.4% of the cross section of the longitudinal cutting of the crown.

Project Calculations of the Bearing Design

When the flutter length is selected, it should correlate it to the stove thickness as 30: 1. However, with independent design, the overlap of 400 mm is almost no sense, since the carrying capacity of the structure rises along with its own weight and static stresses. Therefore, the permissible load on homemade floors rarely exceeds 1500-2000 kg / m 2.

The situation can be corrected by incorporating into the carrying structure of foreign steel beams laid on the aligned concrete surface of the masonry of bearing walls. Another way to increase the flop length while maintaining the relative freedom of the planning is to open the overlap on the columns. With the thickness of the monolithic structure up to 400 mm and the length of the span in four directions from the columns up to 12 meters, the support area of \u200b\u200bthe support is 1-1.35 m 2, provided that the cross section of the mortgage of the reinforcement in the column is at least 1.4%.

Calculation of the reinforcement of the monolithic plate

In the general case, the stove thickness is determined by the amount of reinforcing steel, which is laid in it. The density of reinforcement, in turn, depends on the maximum permissible load and resistance to cracking. Avoiding special cases, it is possible to provide a common example of a structure that demonstrates full compliance with regulatory requirements at a fairly high strength of strength.

In private construction, reinforced concrete is strengthened with reinforcement with a periodic Class A400 profile, it is the A-III.

The diameter of the rod in the stoves thickness:

• up to 150 mm - at least 10-12 mm;
• from 150 to 250 mm - at least 12-14 mm;
• from 250 to 400 mm - at least 14-16 mm.

The reinforcement is laid by two meshes with a cell size of 120-160 mm, the thickness of the protective layer of concrete from the edges of the plate is at least 80-120 mm, and from above and from the bottom of at least 40 mm. The direction of laying four rows of reinforcement, starting from Lower: Along, across, across, along. A galvanized wire with a thickness of at least 2 mm is used for dressing.

Installation of formwork of different types

The formwork must withstand the load of 500-1100 kg / m 2, including the dynamic effect of incident concrete. To create a formwork plane can be used:

1. Plastic sheets of a multi-forming formwork.
2. Moisture-resistant plywood with a thickness of 17-23 mm.
3. OSP thick 20-26 mm.

The edges of the plates should fit tightly to the walls, it is not allowed to use formwork with gaps at the junctions of more than 2 mm, if it is not planned to be stamped with a waterproofing film.

Sometimes it is reasonable to make a formwork from removing, using profiled sheets for this, orienting them with a narrow shelf down. They are placed along the plate so that the waves for the pouring form numerous ribs of stiffness. The thickness calculation is carried out from the lower edge, thus saving the concrete mixture is 20-25%. At the same time, the height of the ridge should not exceed a third of the overall thickness of the plate. If the formwork is not planned to be removed, screws are screwed into it with a rubber washer and tied with a thin wire to the valve.

Installation of the formwork starts with the placement of the racks: it can be either steel telescopic racks with a tripod and a coin, or wood without damage to a cross section of at least 100 cm 2. Each rack must be associated with two adjacent inclined links from an inch. The racks are mounted along the beam lines, the distance between which, depending on the thickness of the plate 150-400 mm, is:

• 190-240 cm with plywood thickness up to 20 mm;
• 210-260 cm with plywood thickness from 21cm.

At the same time, the distance between the racks of one beam, depending on the interval between them, is:

• from 140 to 200 cm when spanging up to 150 cm;
• from 120 to 180 cm with a span 160-210 cm;
• from 100 to 140 cm with a span 210-250 cm.

The main beams are usually made of a bar 100x100 mm. On them across increments of 500-650 cm put the secondary beams, which have a cross section of 50% of the main. If the formwork from the profiled sheet, the secondary beam step is 3.5 distances between the waves.

The vertical formwork is mounted from retaining shields attached to the outside wall of the building. Often around the perimeter put the blocks of aerated concrete with a thickness of 80-100 mm to hide the overlap belt.

Reinforcement and strapping

After mounting the formwork, it is lubricated with the anti-adhesive composition and begin laying of reinforcement. At the crowns and supporting edges, the rods are linked to a square, keeping the minimum allowable protective layer from all sides. The main array of overlap is reinforced by the grid. The lower layer is placed on plastic "crunches", which control the preservation of the lower protective layer. The grid is tied up at the intersection of each third rod.

After the strapping of the bottom grid, the intermediate locks are installed after 100 cm in a checker order. To enhance the support on the walls, end locks are mounted. These elements help preserve the design distance between two reinforcement planes.

The mounted upper mesh is associated with lower connecting brackets. After the installation is completed, the reinforcing design should be as one and easy to perceive the load from people walking along it.

Pouring concrete

Monolithic floors are poured with concrete brand B20-B30, prepared in factory conditions. The fill of monolithic floors should be carried out in one stage, so the filling of space with small doses is not recommended. If it is impossible to perform the entire volume of work at once, the plates of the plate need to be cut into a grid with a cell of 8-10 mm.

The supply of the mixture to the overlap can be carried out by a concrete pump or volumetric frame raised by a tap. After filing, the mixture is evenly distributed, seated with vibration and leave to stick.

Next steps

Concrete is gaining sufficient strength after 4 weeks, all this time it needs periodic wetting and protection against rain the first 2nd days. After drying, the formwork can be removed and proceeding with the construction of walls.

The construction of any home or construction implies the installation of overlaps located between the floors or in the attic. Often, products from wood are used to implement such a task. Wooden elements are easy to do and install, but they have low heat and noise insulating characteristics, therefore, it is noticeably inferior to overlaps made of concrete. For this reason, it is better to give preference to a concrete version. Moreover, make the monolithic overlap with their own hands is quite simple.

Device

If we talk about the device under consideration, it is formed from a special reinforced concrete. Concrete is poured into a formwork, which is not deformed subsequently and will not get under the load. To create with your own hands, such a product will be required lumber, tools for the subgone, rediscovers and collecting shields. After the implementation of the platform, it can be used in the rapid mechanism.

The consumility will be fittings, as well as concreted communication. The stove of the basement overlap will be the most difficult - due to the large number of introductory units of engineering type mechanisms.

Load calculation

During use, the overlap of the monolithic type is exposed to a variety of loads:

• temporary;
• permanent.

If we talk about first, their value will be associated with the weight of engineering communications, floor finish, ceilings, furniture, as well as the number of people who are indoors. In the second case, the transmission is carried out by a mass of the walls of the building, partitions of internal type and the mass of the roof, which also perceives the additional mass of the wind and the snow loads. When work on the construction of walls is fully fulfilled, and their level is fitted, you can equip the slab itself.

The load acting on the product is determined by the thickness of the reinforced concrete. For example, if the thickness is about 20 centimeters, each square meter of the surface can take up to halftone of the load of the useful type.

If the calculation is correct correctly, you can estimate the load capacity of the plate from the reinforced concrete, taking into account the real operating conditions, and therefore, and do not add to the cracks.

The accuracy of settlements will affect the following aspects:

• reinforced concrete plate thickness;
• used brand concrete;
• establishment indicator of the calculated type per square meter of overlapping;
• dimensions.

It should be understood that when designing reinforced concrete floors, an exact plan must be drawn up, which is usually drawing.

When selecting the span length, it is necessary to correlate its thick plate. This ratio should be approximately 30: 1. But when implementing an independent creation of a project to do something thicker than 40 centimeters there is no meaning, because the carrying capacity increases with its mass, as well as static stresses. For this reason, the permissible load on the overlap of the homemade type is rare when it is above 1.5-2 tons per square meter.

True, it is possible to correct this situation if you include in the design of the carrier type of steel bays, which are laid on the laying surface of the masonry of the carrier walls on the plated concrete. Another option, how to raise the span length while maintaining a free layout is to stop the entire design to the columns. If the thickness of the monolithic solution is up to 40 centimeters, and the length of the span in 4 directions from the columns is 12 meters, then the area of \u200b\u200bthe reference section will be 1-1.35 square meters. But this is possible only if if the reinforcement section is laid in the column, will be at least 1.5%.

Choosing brand concrete

It should be said that the issue of selection of the brand of concrete for homemade overlap is extremely important. After all, the wrong choice of this material promises problems with strength, a decrease in resistance to loads and so on. Therefore, the recommendations of specialists in this matter will definitely not be unnecessary. Consider what brands of concrete today.

• Mark M100it is a solution with the lowest quality and is usually used before pouring monolithic structures. Usually this option is used to fill the foundation ribbon, the formation of the pillow of concrete, the installation of the curb and so on.
• M150 concrete brand Used for floors, screed, as well as creating a foundation for buildings where there is a small number of floors.
• M200 It will be applied to the formation of gender, messy and screed. Due to the high strength of the material, it is used to produce concrete stairs.
• M250 It will be an excellent solution in creating a monolith of tape foundations, as well as slabs of overlaps.
• M300 It is used to form slabs of floors, as well as concrete stairs.
• M350used to create various surfaces of monolithic type, beams and pools.

M400, M450 and M500 brands are practically not used in the construction of private facilities. They are in demand in creating such buildings like dams, dams, bridges and various hydraulic structures.

If you draw conclusions from the described information, it is best to create a M250, M300 brand or sometimes M350 with your own hands to create a monolithic overlap.

Installation of formwork

Now let's talk about this moment as the installation of the formwork, because the ceiling slab device assumes that the concrete is poured into a formwork design, which is horizontally. It usually has the name of the deck. There are the following embodiments of this design:

• installation of a ready-made removable solution - plastic or metal;
• creating formwork on site, using boards or moisture-resistant plywood.

The first option is easier to use, because the formwork disassembles, it has telescopic type supports that are needed to support it at a certain level. If you create a formwork yourself, then you should know that the thickness of the plywood should be 2 centimeters, and the thickness of the edged-type boards is 3 centimeters. Singing the design, you should fit well elements. If the gap remains between them, the formwork surface must be chosen by the film of the waterproofing type.

Step-by-step formwork installation instructions.

• Install vertical racking supports. It is usually telescopic solutions made of metal with an adjustable height. Alternatively, you can use logs, having them through the meter.
• We are placed on the racks.
• Then install the horizontal formwork from above. If a non-ready version is applied, and the proprietary type beams are put on the bars of the longitudinal type, and the plywood with moisture-resistant properties is installed on top. The dimensions of such a formwork should be adjusted perfectly so that there are no cracks.
• It is necessary to adjust the height of the rack support so that the upper part of the horizontal type formwork converges with a part of the wall masonry from above.
• Next, we carry out the installation of vertical formwork parts. The monolithic slab, the dimensions should be such that the edges go to 15 centimeters on the walls. You should create a vertical type fencing just at a given distance from the inside of the wall.
• We check with the use of levels even location of the design and its horizontality.

Reinforcement plate

Monolith must necessarily go through the reinforcement procedure.

• First you need to prepare fittings. The required diameter of the rod should be selected, knowing the calculated loads. Usually for this, the rods with a diameter of 12-14 millimeters are used.
• We deploy the first reinforcing mesh below the design - it will become a monolithic slab in the future. It will be a kind of Armopoyas. First, the longitudinal rods should be laid, after which - transverse. The best sizes of cells in such a grid are indicators of 12-15 centimeters. If the overlap is not very large in the area, then the size of the cells can be increased to 20 centimeters.
• The junctions of the rod should be tied with the use of steel wire.
• We put the second reinforcing mesh similarly to the first. We carry out the transfer of grids with wire. If the rods are not enough, then you can take an additional rod, which should be tied up with a mustache equal to at least 40 reinforcing diameters. If a bar is used for a diameter of a little more centimeter, then the nest must be 48 centimeters. The junctions of the rod should be placed in a checker order. The ends of the arrangement should be on the beams of the carrier type.

As you can make sure, Aropoyas make easy. Such a solution with steel profiled flooring significantly improve overlapping strength.

How to pour?

Concrete should be purchased right at the manufacturer, which will greatly facilitate the task. Pouring a solution with a mixer to a smooth layer makes it possible to ensure maximum strength of the product. It will be better to fill the concrete with a 20-centimeter layer without stopping.Before indulging concrete into a formwork design, you need to install a frame or a box for technicians. It is, for example, about Ventkanal or chimney.

Concrete overlap is a durable and reliable element without which it is not necessary to do with the erection of multi-storey buildings and structures. Installation of monolithic overlap does not require lifting mechanisms, which ensures savings on equipment and payment of additional labor. The use in the construction of inter-storey partitions reduces time on work and allows you to build structures with your own hands. The manufacture of concrete floors is a light process, but to make high quality material with its main advantages, you should adhere to the sequence of work and carry out the calculation of the basic parameters of the building element.

Purpose

Concrete floors are one of the main building elements in the construction of buildings. They are designed to connect:

• basement with rooms;
• first floor with second;
• roofs with home.

And also used for horizontal screed of buildings and structures.

Requirements for overlappings

The following requirements are put forward to concrete overlap:

• the presence of the required strength;
• should not contain deformations and must have rigidity and long service life;
• an important property in concrete overlap is its maximum fire resistance, water resistance and no possibility to penetrate air;
• concrete construction between floors should have sound insulation and thermal insulation.

Views

Scheme of inter-storey overlap from concrete.

The following types of concrete overlap are distinguished:

• attic;
• basements;
• inter-storey.

Concrete overlap also happens:

• the hollow, which is often used in construction, where the inter-storey overlap is required for houses from concrete, blocks and bricks;
• the ribbed is used in the manufacture of the roof of industrial structures, where there is no premises warming;
• monolithic, which is a reinforced concrete element and is distinguished by increased strength, is used in the construction of buildings and structures with a large store.

Materials and Tools for Manufacture

When working with concrete floors, the following tools and materials are prepared with their own hands:

• concrete pump;
• capacity;
• buckets;
• jack;
• building level;
• plywood with a property of moisture resistance;
• boards;
• steel fittings;
• wire;
• concrete solution or components for its preparation with your own hands: sand, water, cement and various additives to increase the strength of the solution.

How to calculate the parameters?

Scheme of monolithic reinforced overlap.

When working with overlapping from concrete, it is important to purchase high quality materials. Making a construction mixture, which will be filling in design, use concrete brand 250 and 400, which includes heavy fillers. To make partitions personally, it is important to thoroughly calculate the main parameters of the material. The calculation is based on the comparison of the two main properties:

• reinforcement strength;

Plate calculations are based on such indicators:

• intensity of permanent loads;
• efforts in sections with a large load;
• stiffness axis.

The calculation of monolithic overlaps consists of determining their individual components. First you need to make a formwork from plywood a large thickness, then installed from steel rods tied with wire. The calculation of partitions is carried out by special computer programs and designers.

Determination of strength is obtained from factors such as: load and durability.

To find out the maximum bending of the slab use the following data:

• estimated resistance of reinforcement and concrete;
• armature A400 from class.

The definition of parameters includes such calculations:

• square of working reinforcement;
• the required moment of resistance;
• the maximum moment in the section of the beams.

Formulas and permanent values \u200b\u200bare in the collection to the construction standards and rules.

Overlapping device

Formwork technology includes the establishment of plywood on horizontal supports. To find the right amount of materials, you need to find out the area and the volume of the planned gender. The thickness of the structure depends on the possible loads and sizes of the span. Thus, the formwork makes increased strength without the assumption of deformations so that it can be taken out for a long time the weight of the reinforced concrete.

Choosing boards for formwork, you should pay attention to their strength and thickness. Before installing the design, the height of the span and the bottom of the floor is measured by a construction laser level. In the process of installing homemade racks, it is customized by length to the height of the design, on which the first layer of beams will be built.

It is important to observe the distance that must be more than one cubic meter. Put racks on the floor with a flat surface and high strength. After that, the transverse timber is placed in a step of about half the meter and then set the formwork. After mounting, the formwork check the top of the design to horizontality using the construction level.

When using boards instead of a plywood sheet, they are placed to each other without gaps and from top to prose the moisture-proof material. In all edges of the formwork, sides are installed, which are fixed in the corners of the structure so that they do not deform from the solution.

By installing the formwork itself, it is important to remember several rules:

• eliminate the formation of holes, cracks through which the solution from concrete can be found in the fill process;
• check the strength of the jacks installed under the formwork;
• for the construction of the formwork, the moisture-resistant phaneur is used;
• the formwork must be as strong as possible, because it depends on it the quality of the erected structure;
• installation of the formwork should be carried out both in the area and around the perimeter of the room, which will protect against the context of the concrete mix.

Reinforcement

Partitions between floors need reinforcement to which you can start after installing the formwork. Reinforcement of structures is carried out by reinforcement in one or two layers on the formwork. Set the reinforcement grid in size twenty to twenty centimeters, while the first row is laid on the protective layer, which ensures the uniform distribution of the concrete mixture under the reinforcement.

If it is necessary to connect the reinforcement elements, you should make a nurse at least seventy centimeters. To comply with the proportion, it should be installed on top of the first row of the reinforcement grid of the second layer with the same step (twenty centimeters), only ensuring perpendicularity. At the intersection of reinforcement rods, they are fixed with steel wire and a special crochet, designed to connect the reinforcement. In the manufacture of a two-layer frame based on sections of reinforcement rods, a similar sequence is carried out by the first layer and laid the second, while adhering to the distance between the layers of at least three centimeters.

Plates of overlapping during monolithic construction can be made commissioned at the enterprises of the concrete, delivered to the site and mounted using the crane, according to the rules of laying overlaps.

At the same time, modern construction technologies make it possible to create a monolithic design directly on the place of its location. A more difficult task, so the builders use this method only if you cannot use finished products: non-standard building layout, there is no possibility to use lifting equipment, etc. Create a monolithic slab can also be done with your own hands, subject to all technologies.

Calculation of monolithic overlap

The monolithic overlap is a plate of concrete reinforced with iron. The sizes of the plates are calculated on the basis of the design parameters of the future structures.

You can calculate the stove thickness yourself, taking the size of the span, always taken by the longest wall. The ratio of length and thickness takes approximately 1 to 30, it must be the minimum thickness. For a span of 5 meters long, the minimum thickness must be 170 millimeters, plus 2-3 centimeters for reliability. The maximum thickness of the future overlap is recommended in 250 millimeters. It follows that the longest span, which can be closed without additional supports is 9-9.5 meters. More accurate calculations, nevertheless, should be entrusted to professionals.

How to make a monolithic reinforced concrete overlap with their own hands

The main task is to create a formwork for monolithic overlap, this is the most responsible part of the work. This design can be purchased in the finished form, rent in a construction organization. But in low-rise construction, the techniques of independent creation of the formwork of overlaps from boards, timber, plywood and other materials are widely widespread. Any competent builders of sufficient qualifications can make it, which is called - "with straight hands."

Does it make sense to buy a factory formwork under the slab overlapping? When the ceiling is low, does not exceed 3.5 meters, the homemade design will be quite reliable, it will be no expensive, the materials used can be used again.

To build formwork for overlapping, you will need:

• Thin plywood, laminated or simple, 2 centimeters thick - to create a "deck".
• Wooden bar for vertical racks and transverse beams on which the deck will be lying.
• Wooden boards of various sizes - 50x150 mm or 50x120 mm, for sides.

Laminated plywood is more expensive, but it is better behind the concrete and the surface of the concrete, after frozen, it turns out to be smoother.

Installation of telescopic racks

Bar for vertical racks can be replaced by special telescopic racks. This is one of the secrets and nuances of the formwork for monolithic overlap with their own hands. , About others it will go below. Telescopic tripod tripods makes sense to buy - they are very comfortable, diminishing the process, at the end of construction you can always sell for the same price.

Features, Secrets and Nuances Mounting Formwork

• The setting step of the telescopic supports is 1 meter.
• The pitch of the vertical racks from BRUSEV is 0.5 meters.
• Formwork for monolithic overlap can be removed 2 weeks after filling.
• Phaneur can be replaced with chipboard or thin boards, in this case the external surfaces will not work perfectly smooth.
• Looking at the Faneur or Boards "Decks" with a plastic film, then after dismantling expensive building materials will be "as new".
• The surface after the fill must be regularly wedged with water, the splashing method, so there will be no cracks.

Rules for the reinforcement of overlapping and fill with concrete

Laying fittings

After mounting, formworks produce reinforcement. For reinforcement of one cubic meter of concrete with a plate thickness, 15 centimeters requires about 20 kilograms of reinforcement, a diameter of 10 millimeters (for a longitudinal reinforcing frame) and 7 kilograms of reinforcement with a diameter of 8 millimeters (for transverse). The armature is stacked with a step in 20 centimeters, in two floors, the upper grille holds on the P-shaped brackets that are made from the same reinforcement, read more detail and read the right reinforcement.

The fill is best made by the concrete pump - so the fill will pass quickly, in one reception, the design will be absolutely monolithic. At concrete, it is better not to save - buy a finished solution, or to prepare in the concrete mixer, the cement is at least M400. For a better compaction on concrete, it is necessary to go through the deep vibrator.

Pros and cons

The advantages of this technology are quite obvious.

• A uniform pressure on the walls around the perimeter is created.
• The cost of monolith is less than ready-made zb stoves, formwork coating plates collapsible, materials can be reused.
• No need to attract lifting equipment (crane).
• The overlap can be made non-standard, almost any form, if the project is required.

The main disadvantage of technology before using ready-made valves is the time spent. You can start hard work at the construction site only after the design is finally stabilized by the internal structure, and this is a period of at least a month. To decide how profitable technology is preferable - only you yourself.

It should be mentioned and another technology - creating a monolithic overlap on a professional flooring, which is also not difficult to make it yourself. Pouring along the profiled sheet, which can be used as a non-removable formwork, creates additional ribbies, requires much smaller fittings. In general, the consumption of concrete decreases, although this method cannot be called "budget" due to the cost of the professional flooring.

Video fill overlap concrete

It was in October, it was constantly raining, such a weather would give the best bundle of concrete, the main thing is not to pour concrete along the rain itself.

The budget approached zero, or rather there was almost no, it was necessary to occupy funds, in order to save during reinforcement, a grid of 14 reinforcement 1 layer was used instead of two, but we additionally strengthened the frames for riggers.

The first thing was knitted by Rigel.

For convenience and speed, 4 reinforcements in the wall of the house were clogged.

A part of the reinforcement was released in advance of the concrete belt, for its ligament with the ceiling fittings.

In the places of interior walls, the belt and additional reinforcement did not.

The pretext of securing boards, a frame was made, lags with backups from a bar of 150 × 50 mm.

Loadposition AdSense)

First of all, you need to beat off the level in each room and on it perpendicular to the lags to nail the bar 50 × 50 mm. Nails 100-150 mm. We were nailed directly to the concrete belt, while he was raw, nails went well into it. Additionally nailed a plate under the 50th. The bar is approximately through a meter with a flow rate of 6 nails on the table, as the walls from the shell and nails in it are not very tightly held, it all depends on the density of the stone.

The backups were also fixed, navigating to lags for 2 nails permanent.

At thenime, they also made the soles for the backups and fastened them with nails, as they easily drown in a covered cheese.

When the formwork was completed, started a mating frame, a frame of the 14th reinforcement, cells 20 × 20 cm. Before a viscous frame laid a film on a wooden floor.

From above on the finished mesh from the reinforcement tied the riglel through the meter.

The height and width of the rigel is 10 cm.

Left a place for the future hatch to the second floor, the size was chosen random, 1000 × 2000 mm.

That's all the monolithic concrete overlap is ready. The overlap was flooded in 3 days, the volume of concrete 14 cubes, approximately 800 kg of reinforcement. Mesili concrete manually in a trough of 0.4 cube. It is possible to walk on fresh overlap the next day, but in no case do not load it with materials to complete solidification, microcracks may form. The formwork was disassembered in April.

5 Comments

Hello Eugene! Thank you for paying attention to my pipes! Overlap dimensions 8.600x9.200 m., Cleaning thickness 200 mm., The longest span is 6 meters. If you are interested in any other details, I will be happy to answer.

Hello Vitaly! It was pleasantly surprised by your efficiency. Looking through the photo of overlapping and explaining to them, I realized that in spite of any difficulties you are optimistic about the future.
And I'm glad for you. At my site, I am building a house and this month it is necessary to pour overlap - 125 sq.m. Concrete I need 17.6 cubic meters. Now we are putting the carcasses of the beams, the reinforcement of mon.poyasa, and then the armature of the plates, but the thickness of the plate is 8 cm, and the beams are 10x25 cm, with the maxim, they spill 4.4m, the reinforcement is 8-10 mm. And who suggested you choose such a type and sizes? I think that you could have enough 8 cubic meters of concrete, and this is a big savings, and the load on the sew will decrease by 14.5 tons. But the case is done and this is good. And the last question. Will you talk about new stages of construction? Total good Vitaly.

Hello Eugene!
I confess to honestly at the time of construction, special calculations were not carried out, did "like everyone else." Regarding the overlap, 80% of the overlap area is a span of 6 meters, if you count from carrier to the carrier wall, the partitions I do not take into account, since I have a soil with 1-1,5m and the foundation for partitions, there is a separate depth of about 60 80 cm.
Regarding the overlap, they usually make calculation, where the length of the span is divided by 25-32, hence the thickness. With a smaller plate thickness, there are more permissible slabs (only on the weight of the slab itself) if the plate is not pre-tense. The plate with a thickness of 12.7 cm from the usual heavy concrete satisfies most regulatory requirements for fire resistance and fire safety.
I also add that in our area seismic 9 points, so I did not regret the material, since in the future I plan to pass the house into operation.
Yes, of course, I will publish the materials in the branch "with your own hands", there is a photo, it remains only to prepare the text, but at the moment I am busy with work (bags), I make an internal finish, closer to the fall, I'll take a biggest site. I can also publish your work, making a separate category or "blog" for this, I think your experience is bendable to other users of the site.

Hello Vitaly. I think about solving a similar problem. House 2. Internal size 9x11. Capital wall in 1 brick divides 11 meters by 4.5 and 6.5 meters. Ceiling overlap after 2nd. I plan to also concrete from the reinforcement 2 layers of the bottom layer of 14 mm, the top layer is 10 mm. The inner walls of the premises in the floor of the brick are already expelled. The largest room is 4.2 square. If 4200: 32 \u003d 131 mm overlap thickness. Thicker, I would not want to load the foundation. There are no riglels. What do you say about the thickness of the overlap?