Which risk significantly increases during concrete beam flexure when shear force exceeds capacity of stirrups?

💡 Explanation

When shear force exceeds stirrup capacity, shear stress concentrates, causing diagonal cracking through web because concrete's tensile strength is low. Therefore, diagonal cracking and brittle failure is more likely, rather than effects of reinforcement buckling, concrete creep, or freeze-thaw cycles which relate to different mechanisms.

• Which risk increases when thermal runaway occurs within distribution transformer's oil bath?
• Which outcome occurs in a lean-burn engine when fuel injectors degrade unevenly?
• Which effect arises in robotic arm control systems when improper inverse kinematics calculations are applied?
• Which vulnerability results when a control valve's response time lags optimal levels in a high-pressure hydraulic system?
• Which outcome results when exceeding the configured acceleration limit of a joint in a robotic arm?
• Which risk increases when unbalanced moments in an engine crankshaft induce excessive precession?