30/07/2026
🏗️ POST-TENSION (PT) SLAB – Quick Facts
🔹 What is a PT Slab?
A concrete slab where high-strength steel tendons are stressed after the concrete hardens, improving its strength and reducing cracks.
🔹 PT Slab vs RC Slab
✅ PT: Longer spans, thinner slabs, fewer columns, less cracking.
✅ RC: Shorter spans, thicker slabs, more reinforcement.
🔹 Tendon Geometry
📐 Tendons follow a parabolic (curved) profile—high at supports and low at mid-span.
🔹 Advantages
✔️ Longer spans 🏢
✔️ Thinner slabs 📏
✔️ Fewer columns 🏗️
✔️ Better crack control 💪
✔️ Cost-effective for large buildings 💰