The construction of an extension to a building that has already been built is not responsible for the process other than the construction of the main building. And because the risk that the two structures of a building can shift relative to each other is great, arranging the foundations for expansion is the most important stage of construction work. If you decide to create your own extension base, some useful tips are unlikely. It is recommended to hire general contractor Orlando for the best outcome.
What kind of foundations you can choose: on the gate valves, on the columns or on others, depends on the material from which the extension is planned and on the soil features on site. For example, a brick extension requires a heavy and solid foundation, and a wooden or foam concrete block requires a relatively light foundation.
In order to determine the parameters and structural elements of the future foundation, a hole measuring 1x1 m or 1.5 m is dug near one of the walls of the completed house. After reaching the lower part of the base, a more accurate assessment of the basic dimensions is performed. For the belt - width and level of penetration and the foundations of the post on hexagonal saws - the size of the pillars and the depth of the tab.
The foundation for extending a brick, wooden house or house made of foam blocks is poured to a lower depth compared to the main building. This is necessary to create a certain shrinkage range. In addition, if the main building is on a concrete slab, another slab must be created for the extension, and if the foundations for screw piles were used to build the house, then the extension would require a similar foundation. If you use some other foundation to extend the house, the pressure on the old substrate may increase, causing further shrinkage or even collapse of the structure.
After completing the pouring of the basement extension, do not forget to wait until it shrinks and only then continue with the construction work. For example, if the fall arrangement was completed in the fall, construction of the extension could begin as early as the beginning of spring.
* if the soil in the area is not lumpy or weak;
* if it is planned to build a two-storey port under one roof with the main building;
* if a shallow base tape is used;
* if you can predict the shrinkage of the structure.
If the main building is built on a columnar base on sliders, the reinforcement is mounted on the basement. Therefore, they must have sufficient height and width parameters.
If the brick object is connected to a wooden house or a house made of foam blocks, the shrinkage will be uneven due to the difference in weight. In this case, it is not a question of weighing the basics. In this case, it is more advantageous to create a separate base for the extension of the house.
If the extension of a wooden house or a house made of foam blocks is made of light materials, they most often form column foundations or foundations on sliders.
In this case, the installation of the foundations on the screw pillars with their own hands is the simplest and cheapest way to create a base for extending the frame. The main disadvantage of this embodiment is that the foundations on the auger piles are substantially prone to corrosion.
But this problem can be easily solved with the help of special anti-corrosion agents.
The construction of the house made it possible, but I still recommended that I lay the foundations for the extension of the house at the same time as founding the first stage of the house and organize the floor under it, until it is a platform for rest. In this case, there are no problems with foundations, foundations and wall joints when creating extensions. Another, more difficult situation develops when a new room needs to be created when the house is already built.
Given that the requirements for the reliability of the base for the extension of the house relate to the same extent and the reliability of the foundation of the house, we deal in more detail with the content of this concept. The content of the term "foundation reliability" differs significantly in different soils and with different foundation depths.