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Concrete

August 12, 2017 18:06

reinforcement slabs Technology

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reinforcement slabs Technology

In any type of modern construction of buildings with more than one floor, special attention is paid to such a process, as a reinforcement slabs.

To date, available over a wide range of different materials, and equipment and tools for the so-called individual building.

Contents:

  • Finished slabs or monolithic
  • design features
  • reinforcement technology
  • Rules reinforcement

Finished slabs or monolithic

Calculations upcoming installation work and making a technology choicethe construction of the overlap between floors, you need to consider a number of factors.

worth noting that the creation of a single monolithic plate, meets the requirements of the existing SNIP, is characterized by the undeniable advantages, namely:

  • easy installation of the whole structure;
  • relatively small cost price;
  • increased strength and load capacity, superior to those that do the calculations.

main feature is that properly performed reinforcement of monolithic slabs ensures uniform load distribution on all the walls of the building.

If we talk about hollow core slabs, it is necessary to focus attention on the fact that the fittings, providing rigidity, located at their bottom.

Another indisputable advantage of the described overlap is that it can create any size and shape desired.

This can be seen by viewing the photos already constructed buildings.Quite often, it is difficult to pick up the finished boards.

Components of the floor slab

Before beginning installation of the reinforcement and required to complete calculations and make the appropriate drawing, based on the following factors:

  • thickness of the slab;
  • overall dimensions of the plate;
  • characteristics Laying nets (grid spacing, presence, and location of the gains and others).

Do not forget that all of these parameters clearly establishes modern building codes (SNIP).

design features

Without exception, all concrete products combine the characteristics of concrete and metal.

This applies to both the monolithic produced on-site, as well as to the already finished hollow-core slabs.

For its part, solid concrete can withstand compressive effects, while reinforcing assumes tensile loads.

Any overlap will operate on a break.This fact is taken into account in its manufacture.The monolithic technology involves the creation of two nets Laying nets - top and bottom.

calculation step and the thickness of the rod itself is made by experts, based on the requirements of existing SNIP.

In most cases, reinforcement binding wire is fixed, but can be used and ready-welded mesh.

Particular attention should be paid to the fact that the rods must necessarily be unbreakable.

Photo:

In those situations where the individual segments need to be connected, the overlap of reinforcement should be at least 40 * d (in thiscase d - the diameter of the rod).

The floors Laying nets recommended reinforcement of steel grade "A3" hot type with a diameter of 8-14 mm.The specific parameters should contain the drawing.

Most photo dwellings can be seen that the thickness of the monolithic slabs with a span of no more than six meters is about 20 cm.

Such size and is recommended in such cases.The size of the cell Laying nets should be 200x200 mm.Bottom grid bars have a diameter of 12 mm, and top - 8 mm.

reinforcement technology

In any kind of construction the most, perhaps, a popular product of the reinforced concrete floor slab is exactly.

The basis of this design, regardless of the technology of its production, of iron reinforcement.

Given the area and the potential loads are calculated of all process parameters in accordance with SNIP.

Further reinforcement slabs scheme should be displayed in the technical documentation, containing drawings.

reinforcement slabs erected on monolithic technology, is characterized by the following features:

  1. no need for special construction techniques.It is, in particular, the cranes;
  2. Mountable slabs of any shape and dimensions;
  3. Increased durability mounted design that can withstand almost any external influences.For example, a monolithic plate can withstand flame hours.

Rules reinforcement

calculation and subsequent reinforcement is always carried out according to certain rules and must fully comply with all requirements.

These include:

  • If you have flown more than 8 meters is used, so-called tight mesh of high-strength reinforcement rods;
  • In welded construction using rods with a diameter of 8-14 mm, the distance should not exceed 60 cm between them;
  • Calculation monolithic plate thickness in accordance with SNIP is made depending on the width of the formula 1:30;
  • If the stove is not thicker than 150 mm, then it will be enough Laying nets of one mesh;
  • When concreting using liquid concrete, the brand of which should not be less than 200 because other building materials are not able to guarantee the required strength erected overlap;
  • is mandatory necessary to drawing and diagram displays the location gain reinforcement.In this case we are talking about what needs to be done right transverse and longitudinal reinforcement of all the reinforcement belt in the middle of the plate, as well as at the point of contact with the legs.Particularly noteworthy are areas that are assumed to be the maximum load;
  • Separate mounting metal skeletons impossible, if not done correctly calculation of qualified personnel on the standards identified in building codes (SNIP);
  • Additional reinforcement rods are installed, usually around the tooling holes.

Stage performance reinforcement

Masters define the most important stage in the installation of monolithic slabs is the installation of the formwork.

Special attention should be paid to support posts, which should be secured as stable as possible.It should be borne in mind that the cross is heavy overlap.

Video:

Illustrative examples of the installation of said structural elements can be seen on the corresponding picture in the instructions.Loads can reach three hundred kilograms per square meter.

next step will be the construction itself of the reinforcing belt, taking into account the SNIP and all the design features in each case.

between the bottom grid and web formwork set special stand, allowing to create a protective layer of concrete.

should be noted that the reinforced concrete slab made on monolithic technology, fully exposing loads that provides calculation is possible only after the concrete is not only to dry completely, but attains the required strength.

majority of schemes provides such components of the frame as:

  • working reinforcement of the top layer;
  • rods evenly distribute the load;
  • lining - often they are made of wire rod.

In practice, schemes may differ significantly from each other.

For this reason, it is strongly recommended to seek the help of professionals who are able to calculate the potential burden which will be subsequently withstand lateral overlap.

On the other hand, the concrete function identically and therefore their installation can be made on the general principles and familiarized with the necessary technical documentation, supported by certain photos.

course, need some construction skills and equipment to perform such work.

basic load carried on the plate initially in a downward direction, and then uniformly distributed over the entire surface.

Consequently, most of it takes the lower mesh reinforcement.In view of this phenomenon, SNIP impose stringent requirements on the installation of the supporting framework.

Modern technologies allow to create the overlap of any complexity, which are characterized by maximum robustness, reliability and quick installation.

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