The lift shaft is made up of the Modulo formworks of both sections 100/120 and of four bi-tapered blocks, located in the inner corners. In the external part, formworks joined in the traditional way are used: clamps or pin and wedge, while the standard vice is used for the corner. For the following casting it will only be necessary to reciprocally slide the bi-tapered blocks, placed in the corners, to aid the dismantling and their further re-use. The upper casting will be made using the mould supporting stirrups positioned on the previously obtained bar passage hole.