The members are bent at {HEAD ~ an angle} that allows {TAIL ~ the members} to overlap with their ends in alignment 
allows
The members are bent at { HEAD ~ an angle } that allows { TAIL ~ the members } to overlap with their ends in alignment
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH