Buried mortars must be separated from the wall of troughs or drums by at least how many inches?

Buried mortars must be separated from the wall of troughs or drums by at least how many inches?

• A. 3 inches
• B. 2 inches
• C. 4 inches
• D. 1 inch

Answer: (B)

Maintaining a safe buffer between buried mortars and the wall of troughs or drums is about limiting heat transfer and debris impact. The required minimum distance is two inches. This gap helps prevent heat, fire, or fragments from reaching the trough wall, reducing the risk of damage to the wall or triggering neighboring mortars. It also provides space for soil or packing material to settle without squeezing the mortar against metal, which could affect burning and safety. A smaller gap could allow heat or fragments to contact the wall, while larger gaps are more conservative than necessary for this setup.

Maintaining a safe buffer between buried mortars and the wall of troughs or drums is about limiting heat transfer and debris impact. The required minimum distance is two inches. This gap helps prevent heat, fire, or fragments from reaching the trough wall, reducing the risk of damage to the wall or triggering neighboring mortars. It also provides space for soil or packing material to settle without squeezing the mortar against metal, which could affect burning and safety. A smaller gap could allow heat or fragments to contact the wall, while larger gaps are more conservative than necessary for this setup.