. American engineer and railroad journal . sed of horizontal boards oriron plates. In many caseswooden gates are used ; in othersiron gates, lifted liy chains andwindlasses, and moving on roll-ers which work on rollers run-ning in grooves in cast-ironplates set in the masonry. Whenthe height is considerable thegate is divided into two parts,which can be worked separate-ly, and are so arranged that the lower edge of the uppergate rests on the top edge of the lower one. In a few cases, in rivers subject to sudden rise, gateshave been used which oscillate around a horizontal axis,and which can be
. American engineer and railroad journal . sed of horizontal boards oriron plates. In many caseswooden gates are used ; in othersiron gates, lifted liy chains andwindlasses, and moving on roll-ers which work on rollers run-ning in grooves in cast-ironplates set in the masonry. Whenthe height is considerable thegate is divided into two parts,which can be worked separate-ly, and are so arranged that the lower edge of the uppergate rests on the top edge of the lower one. In a few cases, in rivers subject to sudden rise, gateshave been used which oscillate around a horizontal axis,and which can be opened and closed by chains. These general remarks may be emphasized and perhapsexplained by condensed descriptions of some of the moreremarkable dams, which will be given in the ne.\t part. (TO BE CONTINUED.) Goulburn Weir, which forms one of the subjects of theannexed plate. The illustration shows the weir during theoccurrence of an extraordinary llood, with a volume of1,423,000 cub. ft. passing over it per minute. GOULBURN WCIR- RlCHT. IRRIGATION WORKS IN AUSTRALIA. (From Indian Engineering^ The Government of the colony of Victoria is alive to thebenefits of irrigation as a means of ameliorating the condi-tions of country life in that part of Australia. HORSHAM WCIR ^ON wiumcha.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
