Precast floors and in particular hollowcore floors offer many advantages over alternative methods, such as in-situ concrete, metal deck and timber. Prestressed hollowcore floors provide the most economical flooring system for the widest variety of situations in masonry, steel and concrete structures, providing the maximum benefit of speed of erection.

Prestressed hollowcore floor units offer many advantages, including:

  • Speed of erection
  • Immediate unpropped working platform
  • Minimum in-situ concrete
  • Long spans
  • Diaphragm action
  • Flexibility of design
  • Preformed openings for site services
  • Structural efficiency
  • Factory produced to rigorous quality standards
  • Sustainable production compared with alternatives

Prestressed hollowcore floor slabs 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 hollowcore floor units are normally 1200mm wide and up to 20m long. Hollowcore 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. Hollowcore floors are the favoured form of floor construction in individual houses, both at ground and intermediate levels. Hollowcore floors are used because of their favourable cost and fast erection, offering significant benefits to specifier and contractor.

IPHA Members and Associate Members are all bound by a common aim to promote the application of prestressed hollowcore floor units. The full list of objectives of the Association can be found within this website.