FIG 23 depicts {HEAD ~ the use} of {TAIL ~ movable safety barrier system} 70 on one side of the roof 15 or peak of a building 24 
of
FIG 23 depicts { HEAD ~ the use } of { TAIL ~ movable safety barrier system } 70 on one side of the roof 15 or peak of a building 24
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH