Reply to Thread

Message

<blockquote data-quote="-Pjackso" data-source="post: 3981282" data-attributes="member: 8119">As others have said, they&#039;re bolted down.BUT..... The next question is how are the bolts FASTENED to the floor, that&#039;s where it gets trickier.Most above ground garage shelters are &#039;bolted&#039; to the floor using epoxy resin glue to attach the bolt to the concrete.&nbsp; It&#039;s easy for the contractor and lasts a good time. Until they don&#039;t - read page 3.[URL unfurl=&quot;true&quot;]https://www.okshooters.com/threads/need-to-move-a-4x8-above-ground-storm-shelter-recommendations.241458/page-3[/URL]Epoxy glued bolts and expanding wedge (Red Head) bolts can come loose - without visible evidence. (Due to thermal expansion cycles, it can loose it&#039;s bite)I prefer the &#039;Power Fastener Wedge bolts&#039;.Positive interference engagement (threads).You must use the proper size drill bit, and there is &#039;edge margin&#039; requirements.&nbsp; Other then that it&#039;ll never fail.Same consider goes for gun safes.</blockquote>

[QUOTE="-Pjackso, post: 3981282, member: 8119"] As others have said, they're bolted down. BUT..... The next question is how are the bolts FASTENED to the floor, that's where it gets trickier. Most above ground garage shelters are 'bolted' to the floor using epoxy resin glue to attach the bolt to the concrete. It's easy for the contractor and lasts a good time. Until they don't - read page 3. [URL unfurl="true"]https://www.okshooters.com/threads/need-to-move-a-4x8-above-ground-storm-shelter-recommendations.241458/page-3[/URL] Epoxy glued bolts and expanding wedge (Red Head) bolts can come loose - without visible evidence. (Due to thermal expansion cycles, it can loose it's bite) I prefer the 'Power Fastener Wedge bolts'. Positive interference engagement (threads). You must use the proper size drill bit, and there is 'edge margin' requirements. Other then that it'll never fail. Same consider goes for gun safes. [/QUOTE]

Verification