Post – Tensioning Buildings & Tanks

POST-TENSIONING (Buildings)

• In situ Flat Slab / Flat Plate
• In situ Banded Slab / Beam & Slab
• In situ Beam with Precast Slab
• Composite Structure with Post-tensioning

Advantages of PT Design

Through load balancing, post-tensioning enables a more efficient floor slab design as compared to the conventional reinforced beam and slab system.

In general, advantages of PT slabs over RC slabs are as follows

• Simplified layout - faster construction
• Shallow structure - bigger headroom
• Reduced total reinforcement and formwork
• Better deflection control

POST-TENSIONING (Tanks)

• Egg-shaped digester
• Elevated cone-shaped water tank
• Circular post-tensioned concrete tank

In order to contain the hoop stresses induced by the storage materials in tanks / circular structures, circumferential tendons are introduced in the walls.

For stressing purposes, two (2) types of tendon arrangements can be introduced for stressing purposes:

• With stressing blister- Regular anchorages
• Without stressing Floating anchorages
• For better corrosion protection, plastic ducts, galvanised strands, etc., are used