you need
  • - raw data;
  • - Calculator.
Before the calculation of the required amount of concrete , determine the type of foundation (it can be columnar, of plate and belt), as well as its configuration.Choosing the type of foundation and load-bearing capacity due to the configuration of the ground on which the planned construction of the facility.
To calculate the slab foundation, you need to know the thickness of the plate and the surface area and the presence of add-ons like ribs, and, of course, their size.Minimum thickness of the slab foundation is 10 centimeters.Pripustit that the area of ​​the structure being built is 36 m2 (6x6), means for pouring the foundation slab with a minimum thickness required 36 m2 x 0.1 m = 3.6 m3.
By analogy with previous
actions can calculate the right amount of concrete , if the thickness of the fill will be, say, 20 cm or 30 cm. This figure takes into account only fill a smooth plate, but to the foundationcharacterized by greater rigidity, it is necessary to do more and reinforcing ribs, which will give the plate resistance to deformation.
to calculate costs on concrete ribs need to know the length of the structural member and the cross sectional area of ​​stiffeners.For example, if the edges are made once every three meters, the foundation structure being erected (6x6) they will be six, i.e., along three edges and three transverse ribs.The length of each edge is equal to 6 meters, and the total length of 36 m (6 x 6 m).The thickness of the ribs corresponds to the height of 0.8-1 foundation.Thus, the cross sectional area of ​​the rib plate at a thickness of 10 cm make 0,008 m2 (0.1 m x 0.08 m).Thus to fill ribs leave 0.288 m3 (0.008 m 2 x 36 m).Add the volume of concrete , necessary for pouring the foundation slab and the amount that will be required for the ribs: the value found is the final consumption figure concrete .
To calculate the pier foundation, it is necessary to know the number of columns, as well as their height and diameter.Get cross-sectional area of ​​the column by the formula S = 3.14 x R2, where R - the radius.Then find the volume of concrete , needed to fill one column: multiply the cross-sectional area at the height of the column.Then determine the total consumption concrete for the construction of pier foundation by multiplying the volume of concrete one column on the number of columns.
To calculate the strip foundation is necessary to know the width of the tape, and the depth of the total of its length.Typically, tape width ranges from 20 to 40 cm, and its height - 40-50 centimeters.The total length of the strip foundation is defined as the perimeter of the exterior walls, which was added to the length of the ribbon beneath the inner walls.Multiply figures: the result - a necessary amount of concrete pouring of the strip foundation.