Precast concrete products - Hollow-core slabs

precast concrete hollow-core slabs are designed and manufactured by continuous forming, according to the floor plan provided by the customer with the specified openings. The end edge of the panels can be designed geometrically (cut diagonally or stepped).

Concrete class C45/55 or C50/60 is used to produce slabs. The standard width of the panels is 1200 mm. Narrower panels can be made by cutting them in lengthwise direction, but not narrower than 300 mm. The narrowing of the slabs of each cross-section height is performed depending on the number and position of the holes in the cross-section. Recommended dimensions of narrowed slabs can be found on the website of Perdanga UAB at www.perdanga.lt.

The length of the production lines for hollow-core slabs is 108 m. The formed concrete strip is cut into individual plates according to the design lengths. Perdanga UAB manufactures hollow-core slabs with a height of 200 mm, 220 mm, 265 mm, 320 mm, 400 mm, and 500 mm. A computer program is used for hollow-core slab cross-section bearing capacity and reinforcement selection analyse.