Can I leave the winter unloaded foundation?

If for some reason one season you just built the foundation, then the question arises: Is it possible to leave in the winter is not loaded with a mass of walls and roofs (box at home) and in general whether it is possible to leave a snow?

It all depends on many factors and the original foundation type. A major influence on the foundations - a frost heave and soil cycles freeze-thaw, acting on the concrete if absorbed water in its structure.

1. pile foundations

Screw piles, twisted below the depth of frost penetration nothing to fear. The screw on the tube securely holds a pile of frosty extrusion. A heave itself slides along the smooth surface of the pipe. Above ground piles are covered with paint to prevent corrosion. And we must take care that the water would not get inside the pipe (if it was originally opened in design).

But as a rule, the pipe is welded area and its interior is closed

Bored piles type TISE also not threatened frost heave, if they are embedded in concrete to a depth below the depth of soil freezing.

Simple bored piles can squeeze out of frost heaving, even if they are embedded in concrete below the freezing depth. Soils may cling to their uneven surface. And even if the raft foundation, the horizontal level of the piles in the spring may have different not placed on the pile field.

Extrusion driven piles does not occur, because its surface is smooth. But this type of foundations for private homes is not so common.

2. Strip foundation

Important factors that respond to the question of whether to leave the unloaded foundation in the winter are:

- heaving soils;

- the strength of the foundation.

Consider melkozaglublenny continuous footing as the most common. If the soil is strongly absorb moisture, the structure is located in a valley, it can not save, and high-quality pillow under foundation. In the best case, the angle of the foundation can squeeze out and he lost his horizon. At worst - the tape tears, foundation cracks.

If you have not laid sufficient strength in the base (low grade of concrete and reinforcement is minimal), then these factors can say that leaving the foundation in the winter unloaded better not. Even the walls of the house loaded it can give a crack.

Another option that you have filled in the foundation before the concrete in winter and had not received the required strength even if it is a great brand. Some insulated foundation as follows:

Heat released when dialing concrete strength is not so out of its mass, and it is rapidly gaining strength in such a "coat".

In general, if you are sure that the soil is not critical distending, the foundation of strength is sufficient, it is possible to leave a strip foundation in the winter unloaded.

Ideally, that would be 100% answer to this question - should be considered. And we have, in most cases based on the example of a neighbor or trust the experience brigades.

A separate question - is the foundation waterproofing. Whatever the concrete is gaining moisture from rain and melting snow in the spring - it is covered with waterproofing, or even make a roof:

I believe that such an option over-consuming. Then this spring will need to be dismantled.

Enough to hide it with polyethylene.

When using nizkomarochnyh concrete (concrete or when diluted with water during laying) - spring may occur such picture destruction of the upper layer of the foundation body (in a layer where it was more water).

Do not dilute imported into concrete mixers with water to increase its fluidity. Better use of plasticizers or immediately order the concrete with good ductility.

3. slab foundation

Risk unloaded leave a base-plate in the winter may cause loss horizon plate (lift the one corner or side). In the worst case (if too much swelling and low strength of the board) - deformations and cracks. But such cases I have not seen.

To reduce the swelling soil under the slab on ground works stage make quality pillow of sand and gravel. And ideally - with drainage below the foundation. Because cushion beyond the plate to 0.7-1 m, in order to prevent it falling into the water from rain and melting snow - just make the blind area. So I did.

In principle, I agree with the opinion of the expert.

My base-plate is winter second winter without load walls. Yes, I have in a landmark building while without loans, and not always on schedule.

On the stove I made a concrete ribbon (plate-bowl). The upper bound of I covered mastic asphalt (or cover with a bituminous primer, primer because the mastic without falling off from the concrete over time). Inside the plate I covered hydrophobizator to prevent absorption of moisture in the concrete structure.

In the spring you need to clear the snow from the foundation of what would all this water does not freeze at night, it did not increase the heaving soils and is not absorbed into the concrete.

Even if the foundation horizon lose 1-2 cm (and the foundation is filled with an accuracy of 1 cm), it can be corrected under the first thick solution near the walls of masonry.

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Photo taken from public sources, with Yandex service. Pictures

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