. American engineer and railroad journal . ^A-. on each side. Theseopenings are eachabout 500 ft. in lengthand are divided intospans of 20 ft. Theyare closed by gatessimilar to those of aChanoine these gates arefenders pivoted onhorizontal axes, andso arranged that theyare kept up by theforce of the form a screenbehind which thegates are worked. These flood open-ings are floored withmasonry resting onrows of brick wellssunk in the river-bed. The spaces be-tween the wells weredredged out and thenfilled in with con-crete. The Roopur Dam,on the Sutlej, at thehead of the Si
. American engineer and railroad journal . ^A-. on each side. Theseopenings are eachabout 500 ft. in lengthand are divided intospans of 20 ft. Theyare closed by gatessimilar to those of aChanoine these gates arefenders pivoted onhorizontal axes, andso arranged that theyare kept up by theforce of the form a screenbehind which thegates are worked. These flood open-ings are floored withmasonry resting onrows of brick wellssunk in the river-bed. The spaces be-tween the wells weredredged out and thenfilled in with con-crete. The Roopur Dam,on the Sutlej, at thehead of the SirhindCanal in the Punjab,is a work of a verysimilar type. 5. T/ie Co Ier 0 0 nDam.—This is an olddam, dating from1834, and is on abranch of the CauveryRiver, near the headof its delta, fts ob-ject is to throw backinto the main streamof the Cauvery thewater which wouldotherwise pass intothe Coleroon is of much use inthe system of worksfor the irrigation ofthe delta. The dam consistsof a masonry wall, ofthe section shown infig. 6, ri
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
