. Handbook of construction plant, its cost and efficiency. Fig-. 228—Steel Beam Plow. POST HOLE DIGGERS Post Hole Diggers and Augers—Net prices at Chicago for posthole diggers and augers are as follows: Post Hole Diggers. Length Wt. to Blade, Dozen, Inches. Pounds. Eureka, standard pattern 9 110 Eureka, heavy pattern 9 140 Hexagon 9 120 Champion 6 140 Post hole augers with blades 6 in., 7 in., 8bought for $ each. Price,Each. PriceperDoz. $ .84 .60 $ or 9 in. can be. Fig. 229. Using Post Hole Augers to Dig Holes for Posts for OfficeBuilding, Forest Hills. 502 HA
. Handbook of construction plant, its cost and efficiency. Fig-. 228—Steel Beam Plow. POST HOLE DIGGERS Post Hole Diggers and Augers—Net prices at Chicago for posthole diggers and augers are as follows: Post Hole Diggers. Length Wt. to Blade, Dozen, Inches. Pounds. Eureka, standard pattern 9 110 Eureka, heavy pattern 9 140 Hexagon 9 120 Champion 6 140 Post hole augers with blades 6 in., 7 in., 8bought for $ each. Price,Each. PriceperDoz. $ .84 .60 $ or 9 in. can be. Fig. 229. Using Post Hole Augers to Dig Holes for Posts for OfficeBuilding, Forest Hills. 502 HANDBOOK OF CONSTRUCTION PLANT POWER (See Boilers.) Mr. Wm. O. Webber, a consulting engineer of Boston has pub-lished some very interesting and most important figures to showthe comparative cost of gasoline, steam, gas and electricity forsmall powers. His data have been compiled on the basis ofyearly operation, the year comprising 3,080 hours, and for pur-poses of work in the Northern climate these will have to be modi-fied to suit the special case in point. I have, however, ab-stracted the tables without attempting to change them. I.—COST OF GASOLINE POWER. Size of plant in horsepower 2 6 10 20 Price of engine in place $ $ $ $ Gasoline per B. H. P. per hour % gal. % gal. 1/6 gal. % gal. Cost per $ $ $ = cost per 3,080 hours $ $ $ $1, Attendance at $1 per day Interest, 5%
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