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Old October 16, 2012, 05:56 AM   #25
Magnum Wheel Man
Senior Member
 
Join Date: July 26, 2006
Location: Southern Minnesota
Posts: 8,195
Mine is outside the house, with a door through the basement wall & the top was done in 2 pours, with a big piece of rubber roofing membrane between the layers of concrete to insure it's water proof...

if you're building from new, pouring the top on the gun safe is pretty easy, before building the rest of the house... in my case, I used 3 I beams for support, set into pockets in the walls, with the corogated steel on top, like they use to pour the floors in high rise buildings...

I always wondered how those that add them to existing basements got the top sealed up to be either fire proof, or to keep an enterprising thief from using a circular saw on the floor above, to gain access ???
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