Quote:
Originally Posted by Derek Klepp
Mike just a thought once you have the dome on I would check the stability of the structure with just those four piers .Its probably fine otherwise you could use steel piers and bolt onto the deck with deeper footings.Look foward to seeing it all finished.
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Yes, thought of that Derek and we did dig deeper footings but the support strength seems very good. I may well drive a couple of star pickets at 45deg deep into the ground under the edge of the deck and chain it down just in case of very high winds. The observatory itself will be held down with large roofing screws and a bolt and nut where possible
Mike