Why is it crucial to specify high factors of safety in temporary structures?

Specifying high factors of safety in temporary structures is vital to ensure safety during unexpected loads and conditions. Temporary structures, such as scaffolds, bridges, or stages, are often exposed to variable and sometimes unpredictable forces, such as wind, static loads, dynamic loads from construction activities, and even potential impact from equipment or materials. By using high safety factors, engineers account for uncertainties in load predictions, material properties, and construction methods, thereby minimizing risks of structural failure that could lead to accidents, injuries, or fatalities.

Additionally, temporary structures may not be designed to the same rigorous standards as permanent structures, making the need for extra safety measures even more critical. This approach provides an added layer of protection, ensuring that even if loads exceed anticipated levels, the structure will still be able to support unexpected conditions safely.