🌈 18 Types of Slabs in Building Construction (Every Civil Engineer Should Know!) 1️⃣ One-Way Slab – Supports load in one direction. 2️⃣ Two-Way Slab – Distributes load in both directions. 3️⃣ Flat Slab – No beams, directly rests on columns. 4️⃣ Hollow Core Slab – Precast with hollow spaces, lightweight. 5️⃣ Waffle Slab – Grid-like slab for large spans. 6️⃣ Post-Tensioned Slab – Cables tensioned after concrete sets. 7️⃣ Conventional RCC Slab – Most common slab with beams. 8️⃣ Slab on Grade – Cas