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St. Clair Tunnel
Society: ASCE Main Category: Civil Sub Category: Tunnels Era: 1890-1899 DateCreated: 1891 Beneath the St. Clair River Sarnia State: ON Zip: N7T 8G8 Country: Canada Website: http://www.asce.org/Project/St--Clair-Tunnel/ Creator: Hobson, Joseph , Beach, Alfred

A Day's Pay According to tunnel records, the following pay rates were established for the 600-700 laborers required for this project: 

YearAdded:
1991
Image Credit: Public Domain Image Caption: Postcard of the west end St. Clair River Tunnel in Port Huron, Michigan, United States. Era_date_from: 1891
Peterborough Hydraulic (Canal) Lift Lock
Society: ASME Main Category: Mechanical Sub Category: Water Transportation Era: 1900-1909 DateCreated: 1904 353 Hunter St East Peterborough State: ON Zip: Country: Canada Website: https://www.asme.org/about-asme/who-we-are/engineering-history/landmarks/205-peterborough-hydraulic-canal-lift-lock Creator: Rogers, Richard Birdsall , Dominion Bridge Company

Opened July 9, 1904, this lift lock is the highest of its type in the world, transferring boats between two water levels in a single 19.8 m (65 ft.) lift. Designed in place of conventional locks, which would have lengthed the time considerably to transverse a gradual drop, this lift lock was a unique solution made feasible. It operates on a balance principle. Each boat chamber is supported by a ram, 2.28 m (7.5 ft.) In diameter. These move up and down inside water-filled cylinders connected by a pipe.

YearAdded:
1999
Image Credit: Courtesy Flickr/Mac Armstrong (CC BY-SA 2.0) Image Caption: Peterborough Hydraulic Canal Lift Lock Era_date_from: 1904
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Innovations

Peterborough Hydraulic (Canal) Lift Lock

Opened July 9, 1904, this lift lock is the highest of its type in the world, transferring boats between two water levels in a single 19.8 m (65 ft.) lift. Designed in place of conventional locks, which would have lengthed the time considerably to transverse a gradual drop, this lift lock was a…

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St. Clair Tunnel

A Day's Pay According to tunnel records, the following pay rates were established for the 600-700 laborers required for this project: 

  1. 17.5 cents per hour for diggers 
  2. 15 cents per hour for erectors 
  3. 12.5 cents per hour for others 
  4. One additional dollar…
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