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Concrete

August 12, 2017 18:06

Calculation of concrete grade for strip foundation

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Calculation of concrete grade for strip foundation

important plays the chosen grade of concrete for strip foundation, which is necessary not only to choose the right During the construction of a private house, but also to calculate correctly.

This belt type of foundation is the most in demand in the private and suburban construction.

In turn concrete is practically the only material from which the foundation may be formed.

Because it is performed not only the foundation, but also the home base, as well as other elements of the foundation of the house construction.

on which concrete will be chosen for this purpose, and which brand will be used depends largely on the strength of the entire structure as a whole.

In addition, before starting the construction work should be counted and a sample volume of the solution, and choose the proportions of the components in order to know exactly the required amount of sand and gravel.

Calculation of the strip foundation size is performed with all the major elements of the base, including the basement.

proportions of components used for the preparation of concrete mix should be selected based on several different factors.

Contents:

  • Key Features concrete
  • Prerequisites
  • Mixing ratio
  • Tips and tricks

Key Features concrete

In order to properly determine the grade of concrete for the foundation of the belt type, and calculatevolume and proportions necessary to pay attention to several different factors.

First of all, it should be, making the calculation, determine the approximate weight of vzvodimogo home.

In addition, it is necessary to understand what the total load on the main support will have all sorts of external factors.

also necessarily take into account the type of reinforcement and the base, which will surround the perimeter of the house.Of great importance is played and the type of soil on which construction works are carried out.

Concrete Proportions

In some individual cases before the start of work on arrangement of belt type foundation is required to build a pre-special concrete pad.

Its thickness should not exceed ten centimeters, and for this purpose it is best to use concrete with a brand of M100.In this case, the solution volume will be small.

in when building a house will have a relatively low total weight, for example, if the house is built of shield designs to fit the belt type foundation concrete is not high grade, such as the M200.

Wooden house with small size, which has a low base and is being built on the territory where the underground water table is near the surface, can be built on a foundation of concrete M250 brand.

Accordingly, a bulky structure, which have a relatively large weight, must be made on the foundation of a higher grade of concrete, from the M350.

most durable and reliable concrete, able to withstand a wide variety of load is considered the brand M450, but its use is justified only in the construction of large houses, as well as in areas that are unstable ground.

In each case, under the foundation belt type concrete grade, the proportion and volume of selected individually.

Prerequisites

It should be noted that the grade of concrete to be used for the base tape type is not the only issue with which to decide before the start of construction work.

should also be properly calculate the ratio of the components used to prepare the solution.It is important to accurately determine the amount of added sand, gravel and, of course, cement.

Class and grade of concrete

In most cases, a base and plinth erected houses take the proportion of 5/3/1.This ratio is taken greatest quantity of gravel, followed by sand and cement to the total weight.

as crushed stone gravel can be used, which has the lowest price.In the private low-rise construction is most commonly used solution, which has a standard labeling of P3 to P4.

In that case, when the base tape type is being built on soils with high humidity and containing clay, needed concrete, which has a high water resistance.

In this case, the appropriate and reasonable to use the solution with the brand from W8 to W12.In turn, for the rocky or sandy soil types suitable W2 brand solution.

In any case, the requested payment for concrete base tape type is carried out taking into account how the soil characteristics and the house.Brand

solution determines the strength characteristics and points to the load, which is the entire area of ​​one square centimeter.

For example, if the calculation shows the expected load on the foundation and base of two hundred kilograms, need concrete mark of not less than the M200, and so on.

In turn, the total volume of the mixture is determined based on the area of ​​the foundation.

ratio

components Calculation of the ratio of the components of the solution of the concrete for the foundation of the belt type is made on the basis of concrete brand, you want to get to the exit.

So, if a foundation is required grade of concrete M100, you will need to mix together one part cement brand M400, three parts sand and gravel respectively six parts.

In preparing the solution should be remembered that the quality and strength of concrete affect absolutely all the ingredients that go into its composition.

Their total number and value, as well as the total amount will be the determining factor in the construction of belt type foundation.

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Also, do not forget about a part of any concrete solution, such as water.Calculate the amount of water is difficult.

Usually, its volume is determined on the eyes and it is better if the mixture is not that liquid, but at the same time sufficiently flexible.

can not be allowed, so that the solution has turned out much liquid, as in this case, its strength characteristics greatly reduced.

The best option in the construction of belt type foundation - is to use concrete of medium thickness with high elasticity.

In this case, the base of the house to get the most durable and stable and can protect the structure from possible soil movements.

best to use prefabricated concrete preparation, but it will cost quite expensive.If the solution is to prepare yourself, then you must provide a concrete mixer.

Without it, prepare a solution in the required amount, which will meet all the requirements, it is simply impossible.

In turn, producing the fill liquid solution, you must use a special construction vibrator with which good tamp the concrete and all the air out of him.

Tips and tricks

In preparing the solution should pay special attention to the amount of water added.

its approximate ratio of one bucket at the same amount of cement liquid, but in each case it can be varied.

also of great importance and the quality of added gravel.To form the mixture should be from the same faction gravel.It is best suited for this purpose rubble, which has a coarse fraction.

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If you use fine gravel, it is necessary to increase the content of this component in the solution.Special attention should be paid to the selection and sand.

It must not contain clay and debris, as these ingredients reduce the quality of the final solution.

In any case, each component used in the mixture depends on the fact which will result in the foundation.

to mark the base of the belt type used grout home is important.By her choice should be approached taking into account all relevant factors.

only qualitatively, the base will provide the necessary strength throughout the whole structure.

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