Final answer:
Flammable liquid storage in new and existing buildings generally requires fire-rated walls and doors, designed to contain or prevent the spread of fire for a specific time period, based on local regulations and safety standards.
Step-by-step explanation:
The question relates to the safety standards required for the storage of flammable liquids. For the storage of flammable liquids, new and existing buildings typically require fire-resistive construction. Specifically, walls should typically be constructed with a specific fire-resistance rating, often noted as a time period such as one-hour or two-hour, while doors in these walls should typically be fire-rated as well. These ratings indicate the amount of time the barrier can withstand a standard fire resistance test.
Furthermore, it's crucial to ensure that the flammable liquid storage areas are equipped with proper ventilation systems, spill containment solutions, and that they adhere to any additional local fire codes and regulations. The exact requirements for fire-rated walls and doors may depend on various factors, including the amount of flammable liquid being stored, the type of building, and other safety considerations.