Unfoliated foundation is used in the construction of light structures on bunched soils, the design of which allows small designs without the formation of destruction. It can also be used on large-grade and rock soils for building stone structures . Its feature is that its main part is above the ground level.
Unfoliated foundation There are three types:
- Monolithic plate,
Consider each type of Read more.
Column – cheap option that can withstand a lightweight design on soft soils or a heavy structure on very solid. This species is short vertical supports of approximately 25% of which is immersed under the ground in advance prepared shutoff.
The distance between the columns should be from 1.5 to 2.5 meters.
Materials for creating pillars can be different:
- reinforced concrete,
- Brickwork design.
Wood requires pretreatment to protect against rotting, can not withstand a lot of weight, therefore it is rarely used, mainly for temporary buildings.
The column type is popular in private construction due to its reliability and ease of construction. However, only for light buildings.
There is also a problem of overturning individual or all supports. To exclude this support are made wide at the base and low in height. Also this problem allows to solve the seizure of the soil layer under the post and replace it with a sandy pillow.
The monolithic plate is suitable for construction on solid soils on which there is no probability of sending. Can also be used in permafrost.
Represents a solid concrete slab laid on the surface of the soil. The main problem arising during the operation of this type is the external force effect on the stove, because it can collapse because of them.
On top to the plate will put the house itself, so it should be light.
When freezing the soil, it presses on the slab. To prevent destruction, several measures can be used both individually and in the complex:
- Increase the thickness of the plate gives a big fortress.
- The use of heat-insulating materials under the slabs itself. This will reduce the likelihood of ground freezing.
Grid Unheardly Foundation is a lot of small plates. There is a space between them that allows:
- save on the material due to the fact that you do not need so much material as for a solid slab;
- Since the stove is not solid and destruction in this case does not occur.
For formwork, extruded polyurethe foam can be used, it is not made after drying concrete, and leave as insulation. It is used exclusively on solid and weakly bright soils, which does not allow it to be used in many cases. Also the disadvantage is the complexity of mounting formwork and fill concrete. Therefore, this type did not find widespread use.
For the construction of your own private house in some cases is suitable for unheondered foundation. And what type of existing existing is best suited, you need to choose individually in each case.