Quote:
Originally Posted by The_bluester
My plan was that next time we hire a dingo digger for works around the place, use the auger to make a 600mm hole for the pier of around 800mm depth to directly set the pier in concrete. Will that be an adequate and movement/vibration free way to set a pier in the ground or would I be better casting a larger pad and bolting the pier on top?
I was thinking to keep the concrete away from vibration inducing feet and to allow me to build an isolated floor right up to the post if I get to enclose it in an obs.
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Some people swear that bolting a plate to a pad does not cause vibration but others will disagree totally. Its your call. I am designing an observatory at the moment and will use a cavity under a wooden floor that will be isolated from the pier totally.... just in case.
Pier may be bolted to a concrete block or perhaps a "surefoot" anchor plate; not sure yet. I like the idea of zero concrete for a range of reasons including the obvious cost and environmental issues. I guess bolting a pier to a block means you can just bury the block if the scope goes or your needs change.
Good luck, its a time consuming process.
Rom