Engineering and Contracting . to reduce the size. For the concrete pouring two Insley steel towers 160ft. high were placed on one side of the building as shownin the sketch, and provided with hoisting bucketsof 24 cu. ft. capacity water measure. These were hoistedby 50 h. p. Crocker-Wheeler motor driven hoists with aline speed of 150 ft. per minute when pouring the lowerfloors, but when upper floors were reached it was foundexpedient to increase the speed of the hoisting bucketsin order that the mixer not be forced to wait on the hoist. 579 Each tower was equipped with a Bremer mixer hav
Engineering and Contracting . to reduce the size. For the concrete pouring two Insley steel towers 160ft. high were placed on one side of the building as shownin the sketch, and provided with hoisting bucketsof 24 cu. ft. capacity water measure. These were hoistedby 50 h. p. Crocker-Wheeler motor driven hoists with aline speed of 150 ft. per minute when pouring the lowerfloors, but when upper floors were reached it was foundexpedient to increase the speed of the hoisting bucketsin order that the mixer not be forced to wait on the hoist. 579 Each tower was equipped with a Bremer mixer havinga capacity of 32 cu. ft. of loose material, a hoistingbucket of 22 cu. ft. capacity and a 50-ft. boom support-ing 100 ft. of gravity spout. One extra piece of spout50 ft. long and one about 20 ft. long were also providedand used at each plant when that plant was working. On either side of each mixer was placed a rock binand a sand bin each holding about 4 carloads of ma-terial and dumping directly by gravity into measuring. Method of Placing Vertical Reds in Column Spirals: Man on TopLowering Rods into Spiral and Man on Bottom Tying. bins which in turn dumped by gravity into mixer charg-ing hopper. Directly over the charging hopper and be-tween the sand and gravel bins was placed a cement this the cement was dumped from sacks and passedby gravity through measuring bins as in case of sand
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
