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Project File M&N#: 8057-03 <br /> 9 March 2015 Site Visit Memorandum <br /> .0 .' Y fit • �tr <br /> 81, t� <br /> A <br /> 71.h <br /> 4'"1f <br /> ' n a <br /> Figure 3:Typical Condition of Cleaned Tiebacks <br /> The tierods and nuts were found to be in good condition after surface rust was removed.There was no <br /> sign of heavy corrosion or pitting on either the tierod or the nut.The typical condition of the tiebacks <br /> after cleaning is shown in Figure 3. <br /> After the tieback anchors were cleaned the tierods were distressed one at a time according to the <br /> procedure outlined in RFI 21. However, due to the limited clearance between the concrete deadman <br /> and the adjacent existing waterline the hydraulic jack could not be used to determine the tension in <br /> tieback, or to restress the tiebacks. Instead the Contractor marked the original position of the plate on <br /> the deadman, and the nut on the plate (the yellow marks as seen in Figure 4).The nut was then backed <br /> off by hand using a pipe wrench and a cheater bar.The grease was installed using a pneumatic grease <br /> gun. Finally,the nut was retightened by hand (using a pipe wrench and cheater bar)to its original <br /> position.This ensured that the tierod was reloaded back to its original load. <br /> 1 ld" 4 <br />