The edge portions of the sheets are connected with the purlins at {HEAD ~ locations} above {TAIL ~ the insulating boards} so that the flexible sheets hang downwardly to suspend the insulating boards beneath the roof panels without compressing the insulating boards 
above
The edge portions of the sheets are connected with the purlins at { HEAD ~ locations } above { TAIL ~ the insulating boards } so that the flexible sheets hang downwardly to suspend the insulating boards beneath the roof panels without compressing the insulating boards
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH