In order to properly install a change house at a summer cottage or construction site. It is required to perform preliminary preparation, which includes the construction of a foundation base capable of ensuring the stability of the structure. Installation of the change house on the ground leads to an active effect of moisture on the bottom and rapid destruction of the structure.
The optimal type of foundation is determined by the type of soil on the site, the weight of the house and the features of the relief. For light structures, which include change houses, the following types of bases are used:
- tape shallow;
- on piles.
In addition, floor slabs laid on a sand cushion or foundation blocks can be used as a temporary foundation.
- We put on the foundation
- Shallow strip foundation
- Columnar foundation
- Application of screw piles
- Base of foundation blocks
- Installation of a change house on a finished foundation
- Installation on tires
- Delivery, how to prepare
- How to install a change house, video
We put on the foundation
If the container or change house will be installed for a long time, it is worth making a high-quality foundation. There are several foundation options for this task.
Shallow strip foundation
The base of the tape type for the installation of cabins in the country with their own hands is used in cases where the expected service life of the structure exceeds 10 years. For the device of the support belt, a trench is dug 300 mm wide and 500-700 mm deep. The marking of the trenches must correspond to the perimeter of the change house.
After excavation work, a reinforcing cage of 4 longitudinal strings with a diameter of 10 mm is laid in the trench and a concrete mixture of the M300-M400 brand is poured. The trailer can be installed 72 hours after the concrete has hardened. The use of tape structures on heaving, swampy, sandy soils and at a high level of groundwater is not allowed.
Columnar bases for a change house are used on stable soils and flat horizontal platforms. The design of the supports provides for a wide platform in the lower part and vertical stone pillars. Depending on the structure of the lower frame of the change house, the presence of a grillage connecting the pillars may be optional. Pole supports should be located at the corners of the structure and around the perimeter with a distance between them no more than 2.0 meters.
The pillars can be made of solid clay bricks, rubble stone or cast from concrete. Work begins with digging holes 50x50 cm in size and 0.5-0.7 meters deep. Sand is poured onto the bottom of the pit and a reinforcing cage is laid. After that, a concrete support platform with a height of 25-30 cm is poured.
After 3-4 days, a formwork box with a section of 30x30 cm is installed and reinforced concrete pillars are poured or masonry is laid out. The marking of the position of the pillars is determined by the configuration of the frame of the load-bearing frame of the change house.
Application of screw piles
A pile foundation for a change house is used on weakly stable soils or in difficult terrain with significant differences in height. The permissible pile length makes it possible to provide support on stable soil layers at a depth of 6 meters. Piles are installed at the corners of the cabins and at a distance of 1.5-2.0 meters from each other.
The screwed-in piles are cut at one horizontal level and connected to each other using a channel or I-beam. The change house is installed on a welded grillage and fixed by welding or bolts.
Base of foundation blocks
The blocks are placed perpendicular to the longitudinal support skis of the change house frame every 1.5-2.0 meters. If the length of the block is less than the width of the change house, then two support elements are installed. In the places where the blocks are installed, holes with a depth of 10-15 cm should be dug and covered with sand. The thickness of the sand layer should ensure that the blocks are set at the same horizontal level.
It should be understood that a higher installation of blocks will provide better ventilation of the bottom and its safety for a long time.
Installation of a change house on a finished foundation
After installing the base for the change house, it is necessary to check the position of the reference points at the same horizontal level and proceed with the installation of the purchased trailer or the manufacture of the structure with your own hands. In the latter case, a supporting frame is assembled on which the supporting frame and all other elements of the change house are fixed.
Installation on tires
Car tires filled with mortar or sand can also be a reliable base for installing such a structure. This is a relatively cheap option if you have them available and are not suitable for use. You just need to set the level, it will be more difficult to do than in all other ways, and fill the internal space with concrete mortar, the tires will serve as a permanent formwork. After it has solidified, installation can be carried out.
Delivery, how to prepare
Most of the companies that sell or rent these houses do delivery and unloading. But, they put forward a number of requirements that you must provide, these are:
- Unobstructed access of large vehicles to the site (width and height of the gate).
- Prepared place for unloading.
- The crane boom, at the unloading point, should not be interfered with by wires and trees.