A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Crews hollow mountain to build underground powerhouse
Powerhouse excavation 2000 ft inside mountain for Haas tunnel and powerhouse, project of Pacific Gas and Electric Co; powerhouse proper is 173 ft long by 56 ft wide and includes 29,000 cu yd of material; excavation contract includes 400-ft long 18-ft diam vertical access shaft and 750 ft of steeply inclined penstock tunnel; excavation and drilling equipment.
Crews hollow mountain to build underground powerhouse
Powerhouse excavation 2000 ft inside mountain for Haas tunnel and powerhouse, project of Pacific Gas and Electric Co; powerhouse proper is 173 ft long by 56 ft wide and includes 29,000 cu yd of material; excavation contract includes 400-ft long 18-ft diam vertical access shaft and 750 ft of steeply inclined penstock tunnel; excavation and drilling equipment.
Crews hollow mountain to build underground powerhouse
Construction Methods Equipment
1957
2 pages
Article (Journal)
English
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