2010年7月29日星期四

Precast concrete Beam and block floor

  • This type of reinforced concrete floor is much used for comparatively small spans and loads
  • For floors that need a greater bearing capactiy , the beam or block floors can be finished with a constructional concrete topping
  • The constructional concrete topping ties the beams and blocks together making a composite floor .
  • Solid reinforced concrete beams generally shaped like an inverted T in section are precast in the manufactures factory
  • Depth of the beams caries from 130 to 250 mm and they are90mm wide at the bottom
  • The beams are made in lengths up to 6.0m
  • Precast hollow blovks are made lightweight for lightness in handling and to reduce weight of the finished floor
  • These blocks are usually 225mm wide , 130 to 250 mm deep and up to 225mm long

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