{HEAD ~ The longitudinal members} of {TAIL ~ the frame} may be formed of sections of EMT material, or may alternatively be formed of poles cut in the field, if so desired 
{ HEAD ~ The longitudinal members } of { TAIL ~ the frame } may be formed of sections of EMT material , or may alternatively be formed of poles cut in the field , if so desired
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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