Our Company provides extensive services for the construction of post tensioned slab systems covering the following scopes:

  • Project feasibility study for post tension application.
  • Preliminary design and cost estimation.
  • Final design and shop/working drawings.
  • Complete supply and installation of post tensioning systems.
  • Complete services for formwork set up, reinforcement fixing, concreting and post tensioning installation of slab structures.

Applications

The use of post tensioned slab systems has been conSIStently growing in the recent years. Typical applications have been:

  • Increased clear spans
  • Thinner slabs
  • Lighter structures
  • Reduced cracking and deflections
  • Reduced storey height
  • Rapid construction
  • Better watertightness

Advantages of post tensioned slab systems

The main advantages of post tensioned slab over conventional reinforced concrete slab, may be summarised as follows:-

  • Increased clear spans
  • Thinner slabs
  • Lighter structures
  • Reduced cracking and deflections
  • Reduced storey height
  • Rapid construction
  • Better watertightness

Types Of Post Tensioned Slab Systems

Solid flat slab

Solid flat slab with drop panel

Banded flat slab


Coffered flat slab

Coffered flat slab with solid panel

Banded Coffered flat slab


Ribbed slab

Bean and slab


Bonded or Unbonded Tendons

Post tensioned slab systems can be constructed using either bonded or unbonded tendons. The relative merits of the two techniques are subject to debate. The following points may be made in favour of each:

BONDED

  • Develops higher ultimate flexural strength
  • Does not depend upon the anchorage after grouting
  • Localised the effects of damage
  • Simple technique for demolishing or providing future opening in slab



UNBONDED

  • Provide greater available lever arm
  • Reduces friction losses
  • Simplifies prefabrications of tendons
  • Grouting not required
  • Can be constructed faster
  • Generally cheaper