The flange 28 may be provided on the interior of the curve of the channel section 14, and may have {HEAD ~ approximately three apertures} 32 spaced along {TAIL ~ the length} of the flange 
spaced along
The flange 28 may be provided on the interior of the curve of the channel section 14 , and may have { HEAD ~ approximately three apertures } 32 spaced along { TAIL ~ the length } of the flange
OTH OTH 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 OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH