Concrete slab - Reinforcement

• Introduction
• Supporting the reinforcement
• Trench mesh
• Square mesh
• Reinforcing bars
• Lapping reinforcement
• Re-entrant reinforcement

Introduction

In most cases slabs require steel reinforcement to improve their ability to resist tensile stresses. Protection from corrosion in the reinforcement is achieved by providing minimum covering of concrete. Cover for the reinforcement must be:

• 40 mm from unprotected ground
• 40 mm from external exposure
• 30 mm from a membrane in contact with the ground
• 20 mm to an internal surface.