Once in the ducts of the structure, the strands are anchored and post tensioned as {HEAD ~ a tendon} to develop {TAIL ~ the desired stress} 
Once in the ducts of the structure , the strands are anchored and post tensioned as { HEAD ~ a tendon } to develop { TAIL ~ the desired stress }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL