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 anchored 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 REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH