How to spend the reconstruction of the basement

"It all started with the fact that my foundation beginning to bulge at one corner. " "In the summer built a house, the walls in the spring went crack." "Deformed tape MZL, constant progress of the foundation ..." In many stories FORUMHOUSE reconstruction of the foundation, and is not very successful. We'll tell you why could destroy even properly designed foundation, on what grounds can understand that the foundation in need of repair, and which technologies are used members of our portal for reconstruction of the most common types of foundation.

Foundation needs repair

Before taking a decision on the reconstruction of the foundation, it is necessary to calculate all the risks and simulate all the possible options for the development of the situation. Quite often these people are neglected.

yra88888 (participant FORUMHOUSE):

It seems to be made repair of the foundation, and eventually replaced the flea. And again have the same driving dynamics as before, again distort the door, and then a crack in the foundation.

Technologies that exist in modern construction, in most cases, allow you to completely restore the foundation. But the reconstruction of the subject only certain types of foundations: MZLF, bar and pile gratings. Reconstruction of the floating plates would be meaningless, since it will have to completely demolish the house. It is necessary to remember, starting to construction of houses on the slab foundation.

Yury (participant FORUMHOUSE):

Slab foundation - not a panacea for all ills, but only one of the possible solutions. There are factors that complicate the work of slab foundation (precisely because of their low stiffness), and there are indications for their use.

That foundation in need of repair, you can see a number of features:

• squander the entire building;
• squander areas of the building;
• within the walls of cracks;
• cracks in the base;
• doors and windows are no longer close.

Why the foundation is destroyed

Development of the construction material of the resource - not the main cause of the destruction of the foundation. The need for restoration is not rarely occurs due to a number of factors. Here are the main.

1. Do not have been properly executed work to reduce the swelling forces. Therefore, the foundations are pushed to the surface tape torn, gratings torn from poles and piles.

Example: member of our portal roma4ten built a house in the summer and in the spring on the wall cracks, and soon it turned out that on the earth stands firmly only one corner of the basement, the other three are hanging above the ground.

2. The house held alterations without prior strength calculations supporting structures, violated rules of the joint venture. This leads to the destruction of the foundation.

3. High level at GWL poorly compacted soil base; poor external drainage system.

Alexeevich (participant FORUMHOUSE):

After a winter we observe the following picture: the destruction of the blind area, peeling plaster at the bottom of the base. Well, bad mood.

4. Error in projects and the builders.

Leksikon (participant FORUMHOUSE):

I hope these photos somehow show the extent of the horror!

The crack under the window of the second floor in the house Leksikon informs about the whole combination of errors: the support piles made to soil subsidence, raft foundation is based on the bulk clay primer made insufficient reinforcement structure employed in a responsible samomesny concrete, power belts no. on FORUMHOUSE Leksikon I received a recommendation to disassemble everything, to do engineering-geological surveys and set the house on a slab or pile foundation.

5. Building erected too close to existing buildings, pits made without retaining walls, the design ground resistance is reduced.

Accurately determine the cause of the problem can only be a specialist. On FORUMHOUSE possible ask a question about the foundation deformation or home and get help.

Restoration of the strip foundation

Here's the story of our member portal itsypchenko: His one-story house with an attic defended two winters (but the foundation of 8 years), and that on the plinth and silicate wall crept crack. What can be done?

The COLI strip foundations are the most popular, and technologies for their reconstruction and reinforcement of the existing set. The most common way of restoration involves the use of screw piles. Given the type of foundation, the material load-bearing walls, floors and other features of the house, the piles or screwed to a new location and transfer frame on a new foundation, or submerged piles along each wall, making them a metallic grillage and have him carry the weight of the house, or screwed obliquely, tying the head or channel bar I-beam.

You can also repair the foundation with the help of an ordinary w / w of the pile.

@ Billy Bones (FORUMHOUSE participant):

The usual pile at the end of the broadening of slid under the side of the house. If sinking any one edge of the foundation, the pile can be leaned against the foundation, you can partially be cut into it, especially if it is cracked. You can lean against two piles, outside and inside, connecting them at the top.

In some cases, it is appropriate to fully replace the strip foundation monolithic slab.

Strip foundation FORUMHOUSE Member egonja I cracked and almost completely left the ground. Lower crowns log lying on the ground, the house is always "walk." Foundation more than 50 years, initially depth was about 40-50 cm with frost depth of 2 meters.

Colleagues FORUMHOUSE recommended to change the old monolithic strip foundations on the tape. Here is the technology proposed by a party FORUMHOUSE Gromozeka (Photo of his album):

Destroy masonry sections of 0.5 to 1 m install jacks and metal poles.

Fill baseplate with reinforcement masonry net. Depending on the soil, you can use other material.

Set jacks. In turn raise all openings until post the whole house.

Install steel supports. Is transferred to the home weight.

We expose the inside formwork.

Knit and threaded fittings.

Now install the outside formwork and pour concrete.

Whichever method of repair tape base you choose, in the first place should be dry ground and continue to try to avoid the water. Foundation crumbles due to the expansion of water when it freezes. No water - no crumbling foundation.

Newbiemax1 (FORUMHOUSE participant):

It is necessary to make drainage or any other activities to spend to even suction of the water the sole foundation - and it was not!

How to make a clip

If the repair budget allows, the foundation can also be enhanced with the help of clips.

Brick holder is as follows: a foundation tape is cleaned from the ground, next to it is filled and well compacted gravel cushion on it made of brick masonry. With the old foundation holder associated reinforcing rods.

Also, the foundation can be strengthened by a monolithic reinforced concrete cage, which will increase the carrying capacity of the foundation at 2-3. This is the most effective, but rather expensive and time-consuming method.

serAlex (participant FORUMHOUSE):

You can nasverlit holes 18-22 under the valve to sprinkle the foundation to drive her there, tie up all the good fixtures. Align the formwork 20 cm from the walls and 30 cm above the beginning of the lining and all zamonolitit concrete. Should turn santimitrovy protrusion 20 from walls.

We see how strengthened its foundation for this technology party FORUMHOUSE sachulia (Stepwise fotoinstruktsiya).

Reconstruction of pile foundation

Here's the story of our member portal Artriot. He has a home-karkasnik 7 x 9 put on screw piles. The house has already lived-in, furnished, laid all communications. Unfortunately, it turned out that unscrupulous company engaged in construction of houses made of poor quality pile foundation. The first two years of operation of the pile sticks out at home, but not critical, in the summer they returned to their place. But on the third winter I have not opened the door to the vestibule, from the walls of the second floor ceiling began to retreat. Crumpled metal, but to raise the corners could be seen with the naked eye.

Artriot(Member FORUMHOUSE):

Kicked the biggest pile it on the corners and along the perimeter of the house.

In the diagram -svaynoe field below the house, the inner and central piles are marked in red.

For screw foundation frost heave is always a problem for poorly installed - a death sentence. Moreover, unnecessary water degrades bearing properties of soils, which is especially critical for poorly set screw piles improper diameter.

Cheaper and easier in such cases to make good drainage may have this event so far removed from the soil water that the soil swelling stops.

Liss1970 (Member FORUMHOUSE):

From the angle of digging a ditch 3 meters from the house with a depth of 40 centimeters. At the end of the ditch to dig a well for tire depth of 2 meters. Tires take any shinomontazhke. Buy sewer pipe 110 and the angle of 90 degrees, also buy from drain pipe. Navigate sewer pipe from the corner to the well. Angle (from which water flows) and continue shooting drainpipe before meeting with the sewage. Bury. Everything.

If drainage does not work, then the most budget and quickest option would be the installation of piles for the discharge axes, which are low-quality support. This option is offered by a member of our portal GangstazDoes not require a lift home.

Gangstaz (Member FORUMHOUSE):

Mount series of piles parallel wall of the house at a distance of 500 mm (as an option) on the outside of the house and on the mirror inner (partial parsing floor or opening diameter of 150 mm maximum for each pile, the pile plus installation directly from premises). Two parallel rows of piles are interconnected by transverse elements grillage (or metal bar) and take the load from the wall. A poorly installed piles are cut in order to exclude undesired backwater due to swelling.

This way you can restore the pile field under the entire house.

How to strengthen the soil under the foundation

If the house is based on the bulk soil (For example, carried out portion equalization) or soil with a low rated resistance, its portions over the years, likely will squander destroying the tape and MZLF poles grillage; a plate with uneven subsidence bends like a fox. In this case, the repair of reinforced concrete structures will be good enough, it is necessary to strengthen the soil.

There are several ways to strengthen the soil. Many of them, unfortunately, are not suitable for private traders, whose budget is "not even remotely resembles the budget of at least some banana republic" and requires special equipment. In short, they are divided into physical (silty sands are sintered, if to drill wells in them and burn it in diesel fuel), construction (rubble bedding that will not disperse tape foundation soil reinforcement unrecoverable spirals, etc.) and chemical, which includes tsementizatsiya, silicification, liming, etc. The relevant subject detail FORUMHOUSE narrated, which substances reinforce certain types of soils.

On FORUMHOUSE you learn both with their own hands to screw pile Vinnova, You will find the information you need in the section Repair and reconstruction of the basement, Will be able to watch a video that tells the story of basic rules for UWB installation.

Discuss the article and read other materials devoted to country life you can on the websiteFORUMHOUSE.

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