Review article

The paper presents the results of testing the slab of formwork-free molding (PB slab) for strength, as well as numerical study of the finite element model of this slab. It is shown that with an angular cutout in the PB slab, its load bearing capacity decreases and the nature of fracture changes. Partial compensation for the load-bearing capacity reduction of the slab with such a cutout can be achieved by reducing the pre-stressing reinforcement value of reinforcement rods cut off during the formation of the cutout, or by redistributing the reinforcement along the cross-section of the slab.