To begin with, at this stage, your first and best assistant should become a water level. This is due to the fact that, as a rule, almost all earthen areas have inclinations, both in width and in their length. Even if such a slope is insignificant, it is important to determine the lowest point in one of all the external angles of the future foundation. The depth of the pit will be calculated based on the data obtained. It is especially important to make such measurements if the site for construction has not previously leveled.
For greater clarity, we give a specific example. The difference between the lowest and highest angle is, for example, fifteen centimeters, despite the fact that outwardly the site looks absolutely even. At the depth of the foundation in forty centimeters and the arrangement of a sand pillow, the thickness of which will be ten to fifteen centimeters, the depth of the foundation foundation for the future foundation at its lowest point will be fifty -five centimeters from the surface of the earth and seventy centimeters at the very top of the upper point.
The water level will be required to level the bottom of the foundation of the pit, which should be even relative to the horizon line.
It is very important not to let such a crucial stage of construction as the construction of the foundation on its own.
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