Hmmm im assuming that your going to dyno bolt your pier down..correct. Sounds solid, but the mixture of pavers and concrete could be the problem. I'm not entirely sure how well the concrete will form to the 170yr old pavers, im no expert but I would be more incline to to dig a A shape hole and fill it with just concrete forming a stable wedge underground platform. I think that would if you did this form work around the pier/pipe or beam then it could work out to be very solid. Then again visual or astrophotography, and what setup do you have kg?
Thats my 2c take it as you will, just my thoughts.
Cheers
Dan
