The Prairie Provinces of Canada : their history, people, commerce, industries, and resources . 1. A SMALL CANAL, IRRIGATION WORKS IN ALBERTA. 2 ST. ANDREWS LOCKS, NEAR WINNIPEG. The wetted slope is 4 to 1, the dry slope3 to 1. and the top width 32 ft., with a free-board of 9 ft. above normal has been made for under drain-age, and its upper slope is paved withconcrete slabs. The foundation of the earth portionconsists of a deposit of river silt overcoarse gravel and boulders, which in turnoverlie- dense blue clay. The spillway was designed to pass overits crest 100,
The Prairie Provinces of Canada : their history, people, commerce, industries, and resources . 1. A SMALL CANAL, IRRIGATION WORKS IN ALBERTA. 2 ST. ANDREWS LOCKS, NEAR WINNIPEG. The wetted slope is 4 to 1, the dry slope3 to 1. and the top width 32 ft., with a free-board of 9 ft. above normal has been made for under drain-age, and its upper slope is paved withconcrete slabs. The foundation of the earth portionconsists of a deposit of river silt overcoarse gravel and boulders, which in turnoverlie- dense blue clay. The spillway was designed to pass overits crest 100,000 ft. per second withoutraising the surface of the pool aboveelevation 256263 or 13 ft. over the crest, movable crest is divided into 24 sectionsand supported between piers giving 27 spans. These openings will be regu-lated by structural steel gates. In the determination of the spacing ofthe buttresses, due consideration was givento such questions as the cost of con-struction, the time required to build thestructure, and the limitations in length ofthe gates corresponding to the
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidprairieprovinces00boam
