Encofrado perdido para forjados U-Bahn Beton

4 Advantages Applications • Reduction in time and cost related to positioning the formworks. • High precision and regularity of the width of the concrete slab ribbing. • Flexible, practical and simple creation of lengths below the standard size. • Greater yard cleanliness and improved disposal of the waste in comparison to traditional formworks (hollow blocks and EPS). • Better work performance guarantee in comparison to expanded polystyrene that, due to its crumbling into granules, tends to attach itself statically to everything, and is diffi cult to remove, compromising the correct fi lling of the concrete for the beams and in the nodes. • Possibility to trim the soffi t with immediate economic advantages, avoiding expensive plastering. • Possibility to perform a single concrete casting for the creation of lightened slabs with the slab also in the soffi t. In comparison to traditional formworks (hollow blocks and EPS), the layer making up the soffi t must fi rst be cast, then the formworks and the reinforcements are positioned, and then concrete is again cast. • Quicker execution of prefabricated slabs without the need to prepare specifi c safety vents in the case of a fi re. • Providing the slab with greater fi re resistance. • Considerable reduction in the yard of overall volumes as well as the overhead handling of traditional formworks (hollow blocks and EPS) thanks to its characteristics of stackability, modularity, lightness and manoeuvrability. • Better seismic behaviour; the presence of a dual reinforced concrete layer, which makes it possible to more solidly connect the vertical structures of a building in comparison to a traditional slab. • Advantage of using the cavities created using U-Bahn Beton®, which run along the entire slab, as an equipment room for various types of systems. Application example: Underground parking building with the ‘top-down’ technique. U-Bahn Beton® is the ideal solution for creating lightened one way slabs for all types of structures: residential, commercial, executive, industrial buildings as well as public structures (schools, hospitals, etc). U-Bahn Beton® is fundamentally used in all applications that require one way beams and slabs as well as a reduced use of concrete and reduced weight. With U-Bahn Beton® slabs with a greater thickness can be created with less concrete. A particular type of use of U-Bahn Beton® is for constructions carried out using the ‘top-down’ technique (by compartments or layers) where instead of working from the bottom upward, work is performed from the top downward; fi rst the slab is created and then the excavation is made. Underground parking buildings in historical city centres are often created using this technique due to the obvious constraints related to the presence of numerous buildings as well as the need to quickly restore traffi c fl ows. For projects that use this technique, it is of strategic importance to supply the yard with light-weight and non-bulky material. www.baygar.com