All cemetery vaults, except those used for children under the age of six years, or for ashes of a cremated body, shall be made of cement composition or metal and of a type now in common use or of such materials and construction to meet the following minimum standards:
A. 0.05 inch maximum deflection under normal burial conditions;
B. 5000 pound per square inch minimum tolerance on cross section of container;
C. 125 foot-pound minimum impact force tolerance at 20 degrees Fahrenheit without failure.