A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Two-mile tunnel almost complete
11,350-ft tunnel for sewer service in eastern Toronto which includes three shafts up to 135 ft deep, utilized largest air lock ever used in Canada and was incorporated in cylindrical caisson used for sinking shafts; tunnel is 155 ft below surface; chemical soil stabilization, steel tunnel liners and pressurized working area used to overcome instability of soil; 35,000 cu yd of concrete for tunnel placed by pneumatic machine and pumpcrete machine.
Two-mile tunnel almost complete
11,350-ft tunnel for sewer service in eastern Toronto which includes three shafts up to 135 ft deep, utilized largest air lock ever used in Canada and was incorporated in cylindrical caisson used for sinking shafts; tunnel is 155 ft below surface; chemical soil stabilization, steel tunnel liners and pressurized working area used to overcome instability of soil; 35,000 cu yd of concrete for tunnel placed by pneumatic machine and pumpcrete machine.
Two-mile tunnel almost complete
Roads Eng Construction
1959
Article (Journal)
English
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