Buried mortars should be buried to what depth relative to their length?

Buried mortars should be buried to what depth relative to their length?

• A. 2/3 or 3/4 length
• B. 1/2 length
• C. 3/4 length
• D. Full length

Answer: (A)

The important safety principle is to bury a mortar enough to contain the blast and secure the base, while still allowing practical handling. Burying to about two-thirds to three-quarters of the mortar’s length provides a solid balance: the buried portion supports the tube and directs much of the energy into the surrounding soil, reducing the risk of soil and debris flying upward and helping prevent a misfire from propelling a fragment toward bystanders. If you bury only half the length, there’s less confinement and greater surface exposure to potential splatter or ground disturbance. If you buried it to its full length, retrieval and servicing become more difficult and the setup could become unstable. So, burying to roughly two-thirds to three-quarters of the length is the recommended depth.

The important safety principle is to bury a mortar enough to contain the blast and secure the base, while still allowing practical handling. Burying to about two-thirds to three-quarters of the mortar’s length provides a solid balance: the buried portion supports the tube and directs much of the energy into the surrounding soil, reducing the risk of soil and debris flying upward and helping prevent a misfire from propelling a fragment toward bystanders. If you bury only half the length, there’s less confinement and greater surface exposure to potential splatter or ground disturbance. If you buried it to its full length, retrieval and servicing become more difficult and the setup could become unstable. So, burying to roughly two-thirds to three-quarters of the length is the recommended depth.