They lay the grillage — the distances remaining between the piles to the entire width of the foundation, it is necessary to fill with sand, and lay the stripes of roofing material on it. Set 0.5 m formwork and, using the building level, make alignment horizontally. Before pouring concrete, strengthen it. At the same time, keep in mind that the width of the base should be 10 cm exceeding the width of the wall.
