Which forces must vertical tanks be designed to withstand, according to NFPA 58?

Which forces must vertical tanks be designed to withstand, according to NFPA 58?

• A. Wind, High Winds, and Seismic Forces
• B. Electrical isolation
• C. Temperature changes
• D. Color coding for safety

Answer: (A)

NFPA 58 requires vertical above‑ground LPG tanks to be designed to resist the external loads that come from the environment. Specifically, the standard calls for these tanks to withstand wind forces on the shell and structure, including scenarios with higher winds, as well as seismic forces from ground shaking. Designing for wind and seismic loads helps prevent tipping, rupture, or leaks during extreme weather or earthquakes, keeping the storage system safe. Other factors listed, like electrical isolation or color coding, relate to safety practices or labeling rather than the structural forces the tank must resist. Temperature changes do affect materials, but the question focuses on the primary design loads the tank must endure.

NFPA 58 requires vertical above‑ground LPG tanks to be designed to resist the external loads that come from the environment. Specifically, the standard calls for these tanks to withstand wind forces on the shell and structure, including scenarios with higher winds, as well as seismic forces from ground shaking. Designing for wind and seismic loads helps prevent tipping, rupture, or leaks during extreme weather or earthquakes, keeping the storage system safe. Other factors listed, like electrical isolation or color coding, relate to safety practices or labeling rather than the structural forces the tank must resist. Temperature changes do affect materials, but the question focuses on the primary design loads the tank must endure.