{TAIL ~ 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 the upper surface of said plate in a direction opposite to the direction of said second flange member 
{ TAIL ~ 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 the upper surface of said plate in a direction opposite to the direction of said second flange member
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH