A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New tunnelling achievements reached in driving big Ontario hydro tubes
Twin tunnels, 51 ft diam, each 5.4 mi long driven under Niagara Falls, Ont, for Hydro-Electric Commission of Ontario's new Sir Adam Beck No 2 generating project; finished diam 45 ft with minimum concrete lining 28 in; ventilation by four fans which can put 65,000 cfm into heading; drilling pattern for bench excavation is 4×4 ft grid. (p 64-6, 68, 72-4, 76-7, 80-1)
New tunnelling achievements reached in driving big Ontario hydro tubes
Twin tunnels, 51 ft diam, each 5.4 mi long driven under Niagara Falls, Ont, for Hydro-Electric Commission of Ontario's new Sir Adam Beck No 2 generating project; finished diam 45 ft with minimum concrete lining 28 in; ventilation by four fans which can put 65,000 cfm into heading; drilling pattern for bench excavation is 4×4 ft grid. (p 64-6, 68, 72-4, 76-7, 80-1)
New tunnelling achievements reached in driving big Ontario hydro tubes
Construction Methods Equipment
Richardson, H.W. (author)
1953
Article (Journal)
English
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