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