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The Water Cooler
General Discussion
Storm shelter questions.
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<blockquote data-quote="CHenry" data-source="post: 2490738" data-attributes="member: 6281"><p>You can rent a core drill for a few bucks. I did this before I installed my 2 post lift in the shop. It needed to be 3.5" concrete at or above 3000 psi crush strength. Turns out it was 4" and 4500 psi. A local materials lab can do the crush test.</p><p></p><p>Sent from outer space or somewhere from my mobile device</p></blockquote><p></p>
[QUOTE="CHenry, post: 2490738, member: 6281"] You can rent a core drill for a few bucks. I did this before I installed my 2 post lift in the shop. It needed to be 3.5" concrete at or above 3000 psi crush strength. Turns out it was 4" and 4500 psi. A local materials lab can do the crush test. Sent from outer space or somewhere from my mobile device [/QUOTE]
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