@civilstudyline: Why is most of the main reinforcement at the bottom of a simple concrete beam? 👀 Under downward loading, the beam bends: Top → Compression Bottom → Tension Concrete is weak in tension, so steel reinforcement is placed in the tension zone to carry those forces and control cracking. Simple concept. Huge part of structural design. 🏗️ #CivilEngineering #StructuralEngineering #CivilEngineer #ReinforcedConcrete #Construction