Fuel storage tanks are not required unless the structure is seismic design category which?

• A. A, B
• B. C, D, E, F
• C. G
• D. H

Answer: (B)

Fuel storage tanks are a concern during earthquakes because strong ground shaking can damage tanks, causing leaks or spills and potentially igniting a fire. The code sets when tanks must meet seismic protections based on how severe the structure’s seismic design category is. In low-seismic categories, there’s no mandatory tank-specific requirement. Once the structure falls into seismic design categories C, D, E, or F, additional provisions are required to address the risk to fuel storage tanks, such as proper anchorage, spill containment, and separation from ignition sources. Category G isn’t used in this context, so the applicable range is C through F.