What is the greatest width walkway that can be built to cantilever off the various pile sizes – 10″, 12″ & 14″?
I would not recommend a cantilevered pier 8’ wide at 10’ above the ground plane even with the 14″ diameter piles due to the deflection at design load of around ¼” and we would be approaching the working load of the bracket bolts. This width would make the deck feel unstable to the people using the pier. I am attaching our monopole height vs. pier width graph. I believe the practical limit for monopile pier widths on our 14″ pile is 6 feet due to lateral movement. I was planning to through bolt the piles and use some sort of sleeve as you show in the sketches you sent. Is the black pipe you note, the black pipe used for plumbing applications? Also, is the working load for the ½” bolt 2000lbs per bolt bearing area? Or for the pair? Finally, do you recommend certain center-to-center bolt spacing in the pile? The black pipe is difficult to cut in the field, and of course, it will not last long in a marine environment, so we have looked at plastic pipe to perform the same function. We have
