Very often, the settlement of a house occurs due to the wrong choice of foundation. Many want to save money and make it cheap. As a result, after the first winter, a skewed house. To prevent these problems, it is necessary to carry out geological surveys of the building site before the construction of the building. Only a properly executed foundation will save the building from distortions and subsidence.
The building sank - how to raise the house?
This is a laborious and difficult job. First, it is determined which extensions will interfere with work, they will need to be removed to provide access to the walls. Three jacks are needed to raise the corner of the house. Two will need to raise the corner, and the third will be on hand for safety. It must be remembered: after lifting the wall, 3 chocks are installed and wedged under it. To raise the house, jacks of various carrying capacities and designs, wag levers and wedges of various thicknesses made of hardwood are taken. They are installed under the wall. Wedges are driven between the logs and the foundation.
Whenlifting the wall up, it deviates along with the opposite. This deviation is at a wall height of 3 meters when lifting:
- 10 cm - about 5 cm;
- by 30 cm - approximately 15 cm.
How to raise a house? What measures should be taken to maintain the integrity of the structure?
If you have stove heating, you need to dismantle the floor around the stove and the attic floor, free up to 30 cm space near the pipe to protect it and the stove from destruction. Door and window frames need to be removed.
When raising the house to a small height or increasing its foundation, it is recommended to fasten the raised and fixed walls with clamps on both sides. Such devices can be thick bars, plates or shaped rolled products from corners and channels. 2 or 3 clamps are installed on two opposite sides of the house, stepping back from the corners by 70 cm. They are attached to the walls with nails. Then, 20 mm holes are made near the upper and lower logs, the fixing bolts are inserted and clamped tightly. Such a structure is raised to the required height, alternately on each side. Before raising the house on the second side, temporary huts made of racks or thick logs are substituted under the first. The walls are fastened with clamps and wedged relative to the foundation.
Do not lower or jerk walls too deep - this can lead to chipping corners. It is necessary to ensure that during the ascent there is no displacement of the walls relative to the foundation.
Before you raise the house with a jack, you need toprepare the site. It can be shields, boards. The large footprint increases the reliability of the lifting tool installation. In order not to damage the log, a metal plate is placed on its end with a patch. Two jacks raise one side of the house by 80 mm. The pads are placed, the devices are transferred to the other side, and everything repeats.
Before you raise the house further, the jack rods are lowered, the fixtures are transferred to the first wall. This transfer continues until the desired height is reached.
Be sure to follow the clear vertical orientation of the jack. At the slightest deviation from the vertical, the lifting stops and the equipment is adjusted.
Never crawl under walls or slip body parts while lifting them.
