The pitch of {TAIL ~ the pipe} 20, as measured perpendicularly between crests of successive corrugations 22, is five inches, and the depth is one half inch, as measured from the crest of {HEAD ~ a corrugation} 22 to the flat portion 24 
The pitch of { TAIL ~ the pipe } 20 , as measured perpendicularly between crests of successive corrugations 22 , is five inches , and the depth is one half inch , as measured from the crest of { HEAD ~ a corrugation } 22 to the flat portion 24
OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH