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Precast floors, and in particular Hollow core floors offer many advantages over alternative methods, such as in-situ, metal deck and timber. Prestressed Hollow core floors provide the most economic flooring solution for the widest variety of situations in masonry, steel and concrete structures, providing the maximum benefits of speed of construction.

Prestressed Hollow core floor units offer many advantages, including:
  • Speed of erection
  • Immediate unpropped working platform
  • Minimum site in-situ concrete
  • Long spans
  • Diaphragm action
  • Flexibility of design
  • Preformed site services
  • Structural efficiency
  • Factory produced to rigorous quality standards
Prestressed Hollow core floor units have longitudinal cores of which the main purpose is to reduce the weight of the floor. The elements are available in different depths in order to satisfy the various performance needs for span and loading.

Prestressed Hollow core floor units are normally 1200mm wide and up to 20m long. Hollow core units are mainly used in buildings with larger spans or loadings such as office buildings, hospitals, schools, retail developments, hotels, student accommodation, industrial buildings and sports arenas. Prestressed Hollow core units are the optimum form of floor construction in multi-occupancy apartment buildings and social housing, hollow core floors are the favoured form of floor construction in individual houses, both at ground and intermediate levels. Hollow core floors are used because of their favourable cost rate and fast erection offering significant benefits to specifier and contractor.

Prestressed Hollow core units are manufactured using long line extrusion, by slip forming or similar processes.

IPHA Members and Associate Members are all bound by a common aim to promote the application of Prestressed Hollow core floor units. The full list of objectives of the Organisation can be found within the web site, www.hollowcore.org

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