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A platform for research: civil engineering, architecture and urbanism
Tunnel supports span 113 Feet
Construction of 500 ft sloping transition part of spillway tunnels of large hydroelectric project; cross section changes continuously in size and shape and ends in smaller circular cross section; changing elevations of roof, spring and flow lines are exponential curves and each has different formula; structural steel sections over-span 113 ft; groups of steel ribs are separately tied to rock to avoid accumulation of thrust; excavation and blasting.
Tunnel supports span 113 Feet
Construction of 500 ft sloping transition part of spillway tunnels of large hydroelectric project; cross section changes continuously in size and shape and ends in smaller circular cross section; changing elevations of roof, spring and flow lines are exponential curves and each has different formula; structural steel sections over-span 113 ft; groups of steel ribs are separately tied to rock to avoid accumulation of thrust; excavation and blasting.
Tunnel supports span 113 Feet
Eng News -- Rec
Engineering News-Record ; 163
1959
2 pages
Article (Journal)
English
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