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• Slab On Grade (SOG) applications are specially worrisome as many slabs have lawns or gardens up against the slab perimeter.  Also, many beam tendon ends are below grade.
  
• In most residential and commercial applications lawn sprinklers maintain moisture at the slab perimeter.  Many gardens and lawns are treated with fertilizer and watered at the same time.  These fertilizer products create a very corrosive environment.
  
• These conditions establish an environment that requires special protection of the strand ends that could be attacked by severe corrosion.
  
• The Live End (Stressing End) of an unbonded tendon is protected only by the grout that is placed in the pocketformer void after the tendon end has been cut.  In most areas, the cutting and grouting operation is not subject to supervision or independent inspection.  In fact, some areas allow cutting of the stressed tendon end with an abrasive saw that leaves either no grout coverage or, at best, 1/8" coverage.
  
• Poor labor techniques leave situations such as those shown below.
  

These pictures are not indicative of the workmanship on all slabs, but this is often the result.
In this case the Dead End was driven into the formwork and the strand end is exposed.		The grease spot shows how close the strand end is to the surface.
Even Dead Ends (Fixed Ends) are subject to being placed too close to the formwork, thereby allowing the tendon end to be exposed. NOTE:  These pictures were taken within two weeks of the foundation being poured.

A TYPICAL INSTALLATION

Application is fast utilizing a short piece of PVC pipe and a hammer.  Simply place the cap on the end of the strand end then strike once sharply with a hammer

This was an old slab that had been cut flush with the face of the foundation with an abrasive saw.  It had never been grouted.  PocketCaps were applied to stop further corrosion

_{PocketCapsTM are covered by US Patent number 6,354,596} 

  _{FOR ADDITIONAL INFORMATION: CALL 214-654-0696, FAX 214-654-0697 OR E-MAIL.}