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PRECAST CONCRETE ELEMENTSwww.cpi-worldwide.com CPI %u2013 Concrete Plant International %u2013 6 | 2025 153As a result, it is very important that adjacent slabs are either in direct contact with each other or that there is a force pressing one against the other%u2014but never forces that tend to separate them, because in that case, there would be no friction from either cohesion or surface contact.The exposed wires relate to this second factor, that is, to surface friction. When constructing floor systems, it is not possible to apply permanent loads that create a pressing force between adjacent slabs. These forces instead arise from irregular building shapes, the positioning of partition walls, and foundation settlement. However, action can be taken to prevent separation between the slabs. That is, if there is no force pressing them together, you must at least ensure that there is no tendency for them to pull apart.When prestressed concrete elements have exposed wires, these interfere with the stirrups of the supporting beams or with the edge reinforcements (tie beams), making it more difficult for the hollow-core slabs of a floor system to separate from each other.ConclusionExposed wires help maintain the integrity of adjacent plates by increasing friction. This method is particularly effective when combined with lateral dentation. Alternatives like transverse bars can also be used to achieve similar results. Additionally, this approach avoids silicosis and is environmentally friendly. The patented machine makes this system fully automated, eliminating the need for operators. nFURTHER INFORMATIONPRENSOLAND S.A.C/Industria, 5-908592 Sant Mart%u00ed de Centelles, Barcelona, SpainT +34 93 844 01 25F +34 93 844 10 11www.prensoland.com Tensyland casting machineJoint filling concreteRibbed steel rod to prevent plate separation