FIG 6a illustrates {TAIL ~ the relationship} between tubular member 28 and {HEAD ~ structural conduit} 22 when structural conduit 22 is not tensioned by external factors 
FIG 6a illustrates { TAIL ~ the relationship } between tubular member 28 and { HEAD ~ structural conduit } 22 when structural conduit 22 is not tensioned by external factors
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH