The pitch of 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 {HEAD ~ the crest} of {TAIL ~ a corrugation} 22 to the flat portion 24 
of
The pitch of 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 { HEAD ~ the crest } of { TAIL ~ a corrugation } 22 to the flat portion 24
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH