Which load is moving or sudden in a short time interval?

Which load is moving or sudden in a short time interval?

• A. Fire load
• B. Impact load
• C. Repeated load
• D. Dead load

Answer: (B)

Impact load describes forces that occur suddenly because a moving mass makes contact, creating a sharp force spike over a short period. This impulsive nature means the load is dynamic, with a high peak even if the average force isn’t large. In contrast, a dead load is the permanent static weight of the structure, a fire load relates to energy released by combustibles, and a repeated load is cycling over time rather than happening in a brief instant. Examples of impact loads include something being dropped, a vehicle collision, or a hammer strike. That sudden, high-magnitude, short-duration behavior is what makes this choice the best fit.

Impact load describes forces that occur suddenly because a moving mass makes contact, creating a sharp force spike over a short period. This impulsive nature means the load is dynamic, with a high peak even if the average force isn’t large. In contrast, a dead load is the permanent static weight of the structure, a fire load relates to energy released by combustibles, and a repeated load is cycling over time rather than happening in a brief instant. Examples of impact loads include something being dropped, a vehicle collision, or a hammer strike. That sudden, high-magnitude, short-duration behavior is what makes this choice the best fit.