The design strength of a guard should be able to resist what concentrated load along the handrail?

The design strength of a guard is intended to ensure safety by resisting potential loads that may be applied to it, particularly in locations where a fall hazard exists. A concentrated load of 200 pounds along the handrail is the standard that many building codes and safety regulations endorse. This requirement is established to ensure the handrail can adequately support a significant force, which might be applied by an adult leaning against it or falling against it.

By setting this standard at 200 pounds, it provides a safety margin that helps prevent failures that could lead to accidents or injuries. This aligns with engineering principles that prioritize human safety and structural integrity.

Design requirements may vary based on local codes or the specific application of the guard, but the emphasis on testing the guard's strength against a widely accepted concentrated load demonstrates a commitment to building safety practices that are necessary to protect individuals from falls and other potential hazards associated with stairways, balconies, or elevated walking surfaces.