COMPARATIVE ANALYTIC STUDY ON CONVENTIONAL SLAB AND CELLULAR...
ABSTRACT
A hollow core slab is a precast prestressed concrete member with continuous voids provided to reduce weight and
cost. They are primarily used as a floor deck system in residential and commercial buildings as well as in parking structures
because they are economical, have good fire resistance and sound insulation properties, and are capable of spanning long
distances with relatively small depths. Structurally, a hollow core slab provides the efficiency of a prestressed member for
capacity, span range, and deflection control. Hollow core slabs can make use of prestressing strands, which allow slabs with
depths between 150 and 260 mm to span over 9 meters. When used in buildings, several hollow core slabs are placed next to
each other to form a continuous floor system. The small gap that is left between each slab is usually filled with a non
grout. To give the floor a smooth finished surface, a topping slab overlay, typically 5cm deep is poured on the top surface o
hollow core slabs. The design concepts, manufacture and the erection techniques of Hollow core slabs are discussed in detail.
