How to raise a house with a jack? At first glance, this may seem like a rather difficult task, in fact the technology is quite simple. The main thing is to take into account all the requirements and act in accordance with a specific sequence. It is necessary to thoroughly prepare for the process of lifting a house with a jack, to learn all the details of technology. It is very important to act without haste, gradually.
Types of jacks.
Two jacks will be enough, in the process they will need to be installed alternately, from different sides of the house. The use of four jacks (for each corner of the house) is not recommended, since such an approach to work may cause the house to move sideways. Before you lift the house with a jack, you need to calculate the approximate load that falls on each corner. Thus, you can choose the optimal material of suitable size, which can be used as a temporary support for the house.
Required materials and tools
Before you raise the house with a jack, you should take care of the availability of the necessary materials and tools:
Table of characteristics of jacks.
- steel plate (metal corner of a suitable size);
- metal pipe (for its use as a skating rink under the house);
- material in order to support the raised house (a wooden bar is perfect);
- hydraulic level;
In this case, perfectly suited jacks designed for trucks (carrying capacity of 10 tons).Back to table of contents
Stage of the preparatory work for raising the house jack
Before you start lifting the house, you must perform a series of preparatory work. First of all, two slats are hammered into the ground at every corner of the house. To perform the following steps, you will need to apply a hydraulic level. A feature of this device is a rubber hose, the ends of which are connected to glass tubes, their length is about 200 - 250 mm. To work with a level of this type, water is poured into the hose using a funnel (for convenience, the liquid can be tinted using conventional potassium permanganate). The water level in the tubes should be the same.
With the help of a hydraulic level on each of the rails, the height to which the house will be climbed is marked. To this end, one tube is attached (tied) to the rail. Meanwhile, the second tube is applied to the remaining rails, after which marks are made. It is necessary to return to the tube, which is in a stationary position, and check the level of the liquid. In case of a level mismatch, it can be concluded that the hose contains air bubbles. As you understand, such a device is unsuitable for work.
Diagram of lifting a house with two jacks: 1 - rake with a mark of lift height; 2 - the foundation.
In order to correct the situation, you will need a flat platform with a slight slope. After the device is again filled with water (again with the help of a funnel), go around the house, putting marks on the slats clogged in the ground. Then go back to the fixed tube. In this case, checking the matching of the levels of the rails is a prerequisite. If you accidentally spill liquid from a tube, the process must continue. Otherwise, all subsequent work related to lifting the house may not be performed correctly.Back to table of contents
Stage of lifting the house, or working with a jack
Before you carry out the lifting of the house with your own hands, it is very important to prepare the areas on which the jacks will be installed. Shields, boards or other material should be placed on each horizontal platform. The reference area is desirable to make as large as possible. From the patch of the jack to the lower crown of the dwelling a steel plate is laid (which can be replaced with a corner of a suitable size). This will avoid damage to the logs about the patch. Next, try the upgrade, which will be a trial. If at the same time there was a shift (from the vertical) of the jacks, the supporting platform recovers under the device (jack).
Raise the house should be so that the height ranged from 30 to 40 mm. For lifting houses, as a rule, they use two jacks at once. At least 2 people should take part in the work process. The next action will be laying under the house linings, with which it will be possible to release the jacks. After that, the lifting of all the same side. The height of the house at this time should be about 80 mm. Next, you should install the pads under the house.
Diagram of lifting a house with a jack and plates.
After the rise of the first side of the house is completed, you should proceed to the installation of jacks on the opposite side of the dwelling. Subsequent actions are similar to the previous ones. Then again return to the right side of the house. Having established jacks, lower blinds, otherwise the tool can be turned out from under the dwelling. Already familiar to you actions are repeated in the same sequence until the moment when lifting the house is completed.
When lifting houses it is very important to consider the following rules:
- If you are in doubt of the correct installation of the jack, the process of lifting housing should be stopped and the tool must be put correctly.
- Raising the house with a jack, in no case can not crawl under the shelter. This also applies to the arms and legs, no matter how reliable the temporary linings may seem. You should do the job with extreme caution if you have to raise your house after it has rained, as temporarily installed supports can settle unevenly.
If during lifting there was a shift of the house to the side, place the jacks on the side that was lower. The installation of jacks will be somewhat different, their position should not be vertical, but inclined. The inclination should be directed to the desired position in which the house should be located (the angle should be approximately 60 degrees). With the help of jacks, it is necessary to support the crown of the dwelling, for this, the resistant board nailed to the log will perfectly fit.
The principle of the screw jack.
Thus, the house will stand more securely and will not begin to crawl further. The other two jacks are used to raise the opposite part of the house (30 mm). Place a crown over the logs from the pipe whose diameter is from ½ to ¾ inch. After the house has been raised, lower it onto the skating rinks prepared in advance. Your next actions (with the help of the tilted jacks) should be directed not only to lift the house, but also to move it horizontally.
In that case, if it was possible to raise the house, but at the same time it cannot be moved horizontally, install jacks at a smaller angle (between the tool axis and the ground from 45 to 60 degrees).
Jacking should be done without haste, performing several strokes alternately with each tool. Otherwise (with long-term work with only one of the tools placed under the house), the housing can gradually slide and spin around the pillar installed on the foundation. It is necessary to raise the house strictly in the specified sequence.Back to table of contents
In most cases, lifting the house is necessary in order to replace the crowns. If the work is done with this purpose, it is better to install the jacks in the opening cut in the lower crown. When preparing the doorway yourself, keep in mind that not only the jack itself should fit in it, but also the temporary support that you have chosen (you can use sleepers or wooden boards as a support).
If the operation with the lifting of the house is planned in order to obtain an increased height of the foundation, the tape of the foundation is best suited for gouging openings for jacks.
Before installing the jacks, it is advisable to perform a thorough tamping of the soil under them.
In order to evenly distribute the load under each of the tools fit a wide board. It does not matter what is the basis for the jacks (concrete or soil).