Which term refers to the top component of an air seal burial vault that traps air and supports the earth above?

• A. Embossed
• B. Fixed Multiple
• C. Flat Finish
• D. Dome

Answer: (D)

The top component is the dome. Its curved, arch-like shape creates and traps an air chamber between the vault’s inner and outer shells, providing an air cushion that helps maintain a seal while distributing the weight of the earth above. This structural, load-distributing form is what makes the dome the appropriate term for that part. Embossed refers to decorative texture, flat finish describes surface smoothness, and fixed multiple isn’t a standard term for vault parts, so they don’t fit the function of trapping air and supporting the earth.