At the level of the grillage arranged, on the one hand, the soil was pulled out on the one hand and a thorough cleaning of the foundation with a partial removal of loose lamp masonry, a poorly seized solution and dirt, was carried out. After cleaning and the broans, washing water was done under pressure from the network of the city water supply. Switch of masonry launched pins like anchors with whom the longitudinal reinforcement was tied. At a distance of 30 cm from the outer edge of the wall, the formwork was installed and filled with cast concrete. The thickening made in this way on both sides of the wall made it possible to carry out the work on the eyeliner of the foundations, without analyzing the existing weak lamp masonry of the foundation. Strengthening this foundation is shown at 476, several more types of grillage are also shown there.
