If concrete weighs about 150lbs per cubic foot and my little victor safe is 3ft x 3ft x 2.5ft with walls about 6 inches thick....well my calculator is telling me that it weighs about 2500lbs. Thats not even taking into account all the steel. My math must be really bad or I'm missing something else. Is it possible that my little victor safe isn't lined with concrete? It's very heavy but it just can't weight 2500 lbs. Or can it? What are some typical weights for older safes of that size?