The stiffening members 30 and 32 are each in the form of {HEAD ~ an inverted u shaped channel} having {TAIL ~ its legs} welded to the housing top 
having
The stiffening members 30 and 32 are each in the form of { HEAD ~ an inverted u shaped channel } having { TAIL ~ its legs } welded to the housing top
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH