The splice plates 242 a and 242 b are configured to correspond to {TAIL ~ the form} of {HEAD ~ the end portions} 238 
The splice plates 242 a and 242 b are configured to correspond to { TAIL ~ the form } of { HEAD ~ the end portions } 238
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH