Canadian engineer . 2. Caisson Ready to Launcfi. material locks 4J2 feet in diameter, of the Moon type, allow-ing the free passage of the bucket cable through the topdoors for use in excavation of rock, etc. The workingchamber of the caisson was built of 60,500 ft. of tim-ber and 10,300 lbs. of bolts, ship spikes, etc., and had 21,800. 3. inside View of Caisson. feet of caulking. The caisson was built on a skidway havinga slope of 1:5. There were five skid timbers, each skidbeing supported by eight piles driven to hard-pan. When 338 THE CANADIAN ENGINEER Volume 22. the caisson was ready t
Canadian engineer . 2. Caisson Ready to Launcfi. material locks 4J2 feet in diameter, of the Moon type, allow-ing the free passage of the bucket cable through the topdoors for use in excavation of rock, etc. The workingchamber of the caisson was built of 60,500 ft. of tim-ber and 10,300 lbs. of bolts, ship spikes, etc., and had 21,800. 3. inside View of Caisson. feet of caulking. The caisson was built on a skidway havinga slope of 1:5. There were five skid timbers, each skidbeing supported by eight piles driven to hard-pan. When 338 THE CANADIAN ENGINEER Volume 22. the caisson was ready to launch, the supporting- timberswere, one at a time, lowered down to the skid timbers whichhad been well greased, and the caisson allowed to slide outin a horizontal position. Before launching, the first sectionsof the man-lock and two material locks were bolted into posi-tion, also all pipe connections through the deck and insidefittings placed. These consisted of two 5-inch pipes withflap valves for the air; one 3-inch pipe for water connections,with valves, hose, etc., for three jets; three 4-inch pipes,with valves, hose, etc., for blow-off pipes; one connectionfor high pressure air; two whistle pipes; and electric light-ing connections.
Size: 1981px × 1262px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893
