This makes it possible to incorporate pins of the lifting and handling in the roof slabs dimpled in prestressed as well as the slab obtained following the implementation of this

摘要

The method involves openings made in a concrete hallow slab using a shovel at four corners when the concrete is wet, and introducing a lifting and handling pin (6) in each opening, where the pin is constituted of a metal tie and comprises a middle bend defining gripping ring (7). The ring is subject to a rotation perpendicular to the slab so that positioning branches (81, 82) of the ring passes below a longitudinal reinforcement strand (2). The openings at the corners are trowel with freshly mixed concrete around the rings while filling contiguous zones of holes with the concrete. An independent claim is also included for concrete slab prestressed by iron or longitudinal reinforcement strand.