Which term describes a load applied at a single location, causing high local stress?

Which term describes a load applied at a single location, causing high local stress?

• A. Live Load
• B. Load
• C. Added Dead Load
• D. Concentrated Load

Answer: (D)

This question tests how stress concentrates when a force is applied to a small area. When a load is applied at a single location, the contact area is small, so the stress (force divided by area) becomes very high at that point, creating a localized peak. The term that captures this scenario is a concentrated load, because it describes a force applied at a single point or small area, leading to high local stress. By contrast, a live load or dead load generally refers to weights associated with a structure that are distributed over an area rather than acting at one pinpoint, and a generic load doesn’t specify how the load is distributed. In practice, recognizing a concentrated load matters for design decisions like enlarging the contact area, using bearing plates, or adding stiffeners to spread the load and keep stresses within safe limits.

This question tests how stress concentrates when a force is applied to a small area. When a load is applied at a single location, the contact area is small, so the stress (force divided by area) becomes very high at that point, creating a localized peak. The term that captures this scenario is a concentrated load, because it describes a force applied at a single point or small area, leading to high local stress. By contrast, a live load or dead load generally refers to weights associated with a structure that are distributed over an area rather than acting at one pinpoint, and a generic load doesn’t specify how the load is distributed. In practice, recognizing a concentrated load matters for design decisions like enlarging the contact area, using bearing plates, or adding stiffeners to spread the load and keep stresses within safe limits.