What uniform live load should the tank be able to withstand?

A tank designed for commercial septic systems must be constructed to withstand the specific loads it will encounter, including any live loads from structures positioned on top of it or from potential traffic. The correct answer, which specifies a uniform live load of 150 pounds per square foot, is grounded in safety standards and engineering practices for septic systems.

This load rating is favorable because it ensures that the tank can support typical use scenarios without risking structural integrity. Commercial environments may have heavier equipment or additional pressures due to increased usage, making a higher load capacity essential. Standards often dictate these ratings based on risk assessments and the potential for heavy impact, ensuring longevity and safety.

The other provided load ratings fall short of accommodating the demands of many commercial applications, which necessitate a robust design to safeguard against stress and prevent failures. Therefore, selecting a live load of 150 pounds per square foot reflects a balanced approach to practical design considerations for commercial septic systems.