Product >> Precast Form Slab

PLANK SLAB

Precast Plank Floor system is a combination of precast plank slab of 60 mm minimum thickness and a structural concrete topping cast at site. Plank slabs are used in residential, general or industrial buildings.

Precast Plank slab is composed of a thin reinforced or prestressed concrete plate incorporating a steel lattice girder projecting from the slab.

Plank thickness varies from 60 mm to 100mm.

It is supported in its temporary state, prior to the pouring of the in-situ concrete, by lattice girders and temporary propping. The Propping is removed once the concrete has reached the required strength.

The diagonals of the girders serve to withstand the shear stress and provide excellent bonding between the precast and in-situ concrete layers.

The advantages of Precast Plank Slab are as follows:

• Up to 3m wide elements resulting in fewer joints or no visible joints in residential buildings.
• No negative camber.
• Integrated openings and notches for service risers and other service penetrations.
• The flexibility to produce elements with complex geometry that is not possible in automatic Long line manufacturing process.
• The 75mm pre-cast elements facilitate the laying of plumbing and electrical services on top of the elements, prior to pouring the in-situ concrete.
• Elimination of site shuttering.
• Shallow floor construction reduces floor to floor height.
• Composite action aided by lattice girders enhances structural integrity and robustness.
• Superior soffit finish ideal as finished surface