Usability includes methods of measuring usability, such as needs analysis and the study of the principles behind an object's perceived efficiency or elegance.
Crowne Burial Vault. The burial vault is a waterproof container designed for earth burial. Made in America and constructed of high technology polymer, it is strong enough to withstand the weight of earth-moving and cemetery maintenance equipment.
What is a Vault? A casket is commonly considered the final resting bed of a loved one. However, caskets alone are not designed to support the weight of the surrounding soil. Burial vaults are permanent outer enclosures designed to support the weight of the soil and cemetery equipment. A burial vault should offer you peace of mind by protecting the casket against water and weight damage, and a metal Clark vault offers the best protection available.