first and second flange members disposed along the full length of opposing edges of said plate member, wherein {HEAD ~ the first flange member} is disposed away from {TAIL ~ the upper surface} of said plate in a direction opposite to the direction of said second flange member 
is disposed away from
first and second flange members disposed along the full length of opposing edges of said plate member , wherein { HEAD ~ the first flange member } is disposed away from { TAIL ~ the upper surface } of said plate in a direction opposite to the direction of said second flange member
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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