{HEAD ~ The panels} are staggered in {TAIL ~ the longitudinal direction} so that an end section of one panel extends beyond an end of the other panel and vice versa to form a front extension section and a rear extension section of the structural member 
are staggered in
{ HEAD ~ The panels } are staggered in { TAIL ~ the longitudinal direction } so that an end section of one panel extends beyond an end of the other panel and vice versa to form a front extension section and a rear extension section of the structural member
HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH