Electronic control system incorporating stored program digital computer serves as hub of operations in new freight classification yard in Selkirk, NY; key feature of yard is man-made hill down which cars are shunted for switching into proper classification sidings to make up freight trains; hump is 29 ft high and includes escape underpass for vehicular and train traffic; hump tunnel is 236 ft long and is formed from corrugated steel plates of one-gage thickness; lapped seams are fastened with 3/4 in. diam high-strength bolts. (30625)
"Hump" tunnel in penn central yard
Civ Eng (NY)
Civil Engineering (New York) ; 39 , n 5
1969
3 pages
Aufsatz (Zeitschrift)
Englisch
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