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~. <br /> <br />Repair Method #2 ~~ <br />Taping can be used in place of method #1 to repair small rips and tears in the sheaihing <br />where no significant portion of the original sheaihing is missing. Spirally wrap a minimum <br />of two layers of repair tape, overlapping by 50% and extending a minimum of 3 inches ('75 <br />mm) past the damaged area in both directions. <br />Acceptable Material <br />PTI's Specification for Unbondod Single Strand Tendons states that the tape used <br />should: <br />• beself-adhesive and moisture procf <br />• be non-reactive with sheathing, P-T coating, and prestressing steel <br />• have elastic properties <br />• have a minimum width of 2 inches <br />• havo a cantrasting color to the tendon sheathing ~ <br />Tests run by PTI have shaven that various materials, including PVC pipe wrap tapo, <br />waterproof ductiape, and other PVC and polyethylenetapes, meet these requirements and ~ <br />perform as roquired.The testing revealed thatthe most Important tatter in the performance <br />of any tape repair is that the appiicaticn of the tape is smooth and chat seams, joints, and <br />tape wrinkles are kept to a minumum.Testing showed that tapes wider than 3 inches were <br />very difficult to properly apply without wrinkles and still maintain the watertight seal that is <br />~' <br /> <br />Q <br />Q <br />90 <br />