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      April 6, 2009 at 4:08 am #2946
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      WHY WE ARE BONDED SYSTEM POST TENSIONING TENDON BELOW MARKED THE PAINT MARK). THIS MARK WHAT IS THE MAIN REASON.ANY ONE HELP ME .

      MY suggestion is that wrong. only unboned tendon below need marked the paint mark. becuase control the corrosion for PT STRANDS. NO NEED bonded tendons.

      ABOVE SAID THE SUGGESTION IS WRONG OR RIGHT. ANY ONE LET ME KNOW.

      Decipher
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      Posts: 46
        April 7, 2009 at 3:39 pm #3208
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        Marking under tendons is very effective if u have to make opening in post-tension slabs after casting concrete to show the horizontal alignment for tendons as built, to avoid cutting tendons.its also useful if u have any cracks or problems its v. easy to determine the reason.it shows the cracks with tendons together u can see if it's crossing or parallel with tendons

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        Posts: 66
          April 8, 2009 at 10:15 am #3209
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          During the installation process marking (if done correct) is useful to determine proper tendon position, tendons spacing and straighten them
          After concrete is cast I agree with semsem, that it is necessary to be visible as built tendon location marked on the surface, if extra openings have to be cut on the slab. In addition to that it is useful as a precaution of potential drilling through the tendon (especially not yet grouted tendon) because so many service lines are hanged on the ceiling by drilling