. The railroad and engineering journal . the River and Harbor Bill that will give $900,000 lu menew lock and approaches lor the coming year, and providethat contracts be entered into for the entire lock in use at present was commenced in 1873, afterplans advised by General Poe, and was completed in chamber of the new lock is 515 ft. long, 80 ft. Fig. 4. at the gates, where it is 60 ft., and the depth is 39^ft. The lift of the lock is 18 ft. and the depth on the outersills is from 16 to 17 ft. The protection built last wmterfor these sills could be seen wh
. The railroad and engineering journal . the River and Harbor Bill that will give $900,000 lu menew lock and approaches lor the coming year, and providethat contracts be entered into for the entire lock in use at present was commenced in 1873, afterplans advised by General Poe, and was completed in chamber of the new lock is 515 ft. long, 80 ft. Fig. 4. at the gates, where it is 60 ft., and the depth is 39^ft. The lift of the lock is 18 ft. and the depth on the outersills is from 16 to 17 ft. The protection built last wmterfor these sills could be seen when the lock was emptied tomake repairs, and the torn bar-iron and scarred framesindicated the wisdom of its construction, although therewas some objection to it at the time. A guard-gate ateither end makes the extended walls 717 ft. long. Theyare 13 and 25 ft. wide at varying distances. About 35,000barrels of cement and 34,207 cub. yds. of masonry wereused in the walls, fn the miter walls for the upper lockand guard-gates there are nine courses of cut stone, each2 ft. thick. The walls are 14 ft. wide at the miter angle,are arched to resist the pressure on the gates, and arebonded into the lock walls. The top course of stone is setback I ft., so as to leave an offset, on which the oak mitersills rest ; these sills project 2 in. above the masonry. The foundation is on r
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
