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Cheers Leon,
The rod doesn't have to hold the weight, it is under tension. It will hold about 4000 lb in that configuration and all it is doing is locking the sewer pipe down to the 10 ton concrete slab it sits on. The leveling plate base is laminated ply about 40 mm thick, glued, screwed and sandwich bolted, you only see one layer above the pipe upper edge. The pipe weighs about 80kg and the base is about 320 wide and with the head loaded and balanced could sit there even without the rod securing it to the slab. SKII is a one hand carry and only weighs in at about 11 kg at present and is balanced on the dovetail bar. It doesn't move much when I give it a really good whack and certainly can't rock on the base.
The Ob floor will be isolated, you can see the begiinnings of it in the shots. I know the design is not 'conventional' but it's going to be a lot more stable and better able to maintain alignment than my moving tripod arrangment. I already have the shed planned to go around it.
SkySlab will come to be ....
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