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