The at least one cross member is terminated on {HEAD ~ each end} by {TAIL ~ a single side support member} 
The at least one cross member is terminated on { HEAD ~ each end } by { TAIL ~ a single side support member }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL