Good day, dear readers! A lot of material on this subject is written, proceed directly to the topic ...
I would like to make a remark that the item occurs only when using high-quality concrete mix, concrete and not from Uncle Vasya with a shovel on the KamAZ cement sand.
So, the foundation - the foundation of the building, in 99% of cases, made from concrete above grade M100 or foundation of concrete blocks, but all the same - on a monolithic ribbon of concrete. And now for the concrete ...
Concrete - artificial building material kristallizovyvayas turns into an artificial stone. In 99% of cases, it is made on the basis of cement.
The foundation made of concrete - is gaining necessary for further construction of the building, strength, under normal hardening conditions (> 15°C), - 28 days. But within 48 hours - the concrete is 35% of the strength of the original brand! (cm. reference documentation and "Building Regulations").
Thus, even when using marks M100, at 35% strength -th we obtain characteristic "Compressive Strength" - 35 kg / cm. (As an example, bouncing average person of 85 kg. creates a load on the ground under the legs - 1.2 kg / sq cm).. In this scenario, the second day of the foundation may have to move the elephant! )))
As for the assertion?
Under the settling of the foundation of the people understood such things as:
- foundation should sit down a little;
- the soil under the foundation should be a little promyatsya;
- foundation should survive the winter to the ground "used" to it;
It's funny, you do not agree?! If, indeed, the above points must be carried out, then what happens to the house, which is several times the mass of the foundation?
If you disassemble everything on the shelves, the weight of the foundation:
- floor house: 15-25% by weight of the whole house;
- two-storey house for 10-20% of the weight of the whole house;
- for a three-story house: 8-15% by weight of the whole house;
- etc. (In the construction of high-rise floors 30 - by weight of the foundation is 1-3%).
How can a 70-ton foundation to stand and crush the soil so that it was a house of 300 tons (300 tonnes for understanding, it is usually the attic of brick house with total area of 140 sq.m. 8h10m to size and with the area of building - 80 sqm).
Now, without sarcasm!
The foundation - this is only a design that transfers the load from all of your home at the base, that is, to your soilAs tough layer, which gathers all of your buildings, and evenly load on the ground under the structure. Yes, if the ground sank, the foundation has to keep the weight at home with minimal deviations, but it is a matter of calculation of reinforcement in the concrete and the area bearing on the ground, but did not "defend". The foundation is ready for operation and the load on the higher floors have 28 days after its filling !!!
Thank you for reading to the end!
See also: "The monolithic high-rise buildings are mushrooming. Securely take an apartment in these homes? "
____________________________
If you liked this article, place and Likesubscribe to my channel!There is a lot of interesting topics for you!