What problem does inadequate shear reinforcement typically address?

What problem does inadequate shear reinforcement typically address?

• A. Diagonal cracking due to shear
• B. Temperature changes
• C. Corrosion protection
• D. Crack reduction in bending

Answer: (A)

This question is about how reinforced concrete resists shear. Inadequate shear reinforcement mainly shows up as diagonal cracking caused by shear forces in the member. When the shear demand is high and there isn’t enough shear reinforcement (like properly spaced stirrups), diagonal tension cracks form across the web and can lead to brittle failure. Adding or increasing shear reinforcement gives ties across the potential crack paths, helping to carry shear, restrain crack opening, and improve ductility and overall shear capacity. The other options don’t address the primary issue of shear cracks: temperature changes relate to expansion and contraction, corrosion protection is about protecting steel from rust, and cracking from bending is a flexural (not shear) concern.

This question is about how reinforced concrete resists shear. Inadequate shear reinforcement mainly shows up as diagonal cracking caused by shear forces in the member. When the shear demand is high and there isn’t enough shear reinforcement (like properly spaced stirrups), diagonal tension cracks form across the web and can lead to brittle failure. Adding or increasing shear reinforcement gives ties across the potential crack paths, helping to carry shear, restrain crack opening, and improve ductility and overall shear capacity. The other options don’t address the primary issue of shear cracks: temperature changes relate to expansion and contraction, corrosion protection is about protecting steel from rust, and cracking from bending is a flexural (not shear) concern.