I have a project where the designer specified that A449 studs be welded to a steel member to serve as connection hardware. The studs are 3/4" dia and welded with a 1/4" fillet all around. Studs are failing when hit with a light to moderate blow from a lump hammer. The studs are breaking clean...
Thanks BigH. The piles came with a steel driving shoe attached. This shoe is basically a steel ring around the toe of the pile with a cutting edge. As far as a Vibratory hammer goes; the spec states that if a vibratory hammer is used the last 5 feet must be driven with an air hammer. I think...
I have a contract to drive 80' x 12"d open fiberglass pipe piles to a theorhetical elevation of -66ft. Avg. Mudline is at -40ft. First 20ft of driving is through a M.Dense Silty Sand N = 20. Last 6 ft is through a V. Dense Silty Sand N=40. My contract prohibits jetting. We are using an air...
