Phoenix Project #1913
Phoenix was contracted to install a pair of high capacity drilled tiedown anchors to provide uplift resistance to a compression pile load test frame. A well-respected piledriving subcontractor (Vynorius) needed to conduct a compression test on one of its driven piles, to a maximum test load of 390 tons. In order to resist the jacking forces being applied to the pile, each end of Vynorius’ test beam had to be restrained by a 195 ton (390 kip) tiedown anchor.
Phoenix advanced each tiedown through approximately 65 to 70 feet of overburden soils, and achieved the needed tensile capacity using a 25 foot deep bond length within the underlying bedrock. A single, continuously-threaded Grade 75 threadbar was sized and used to resist the anticipated uplift forces. Phoenix’s high-strength neat cement grout achieved the necessary design strength in only a few days, and Vynorius’ load test went off without a hitch.