. Handbook of construction plant, its cost and efficiency. es are asfollows, No. 1 having steel plate base, No. 2 a cast plate baseand No. 3 a round cast plate base: Size Base Weight Price Price No. (Ins.) Finished Each per Doz. 1 8 x8 13 $ $ 1 10 xlO 16 1 12 xl2 26 2 5x6 9 .78 2 6x7 13 .01 2 7x8 14 .98 2 8 x 8 15 2 10 xlO 20 2 5 x 6 24 3 7 20 Curb 1 x 31/2 3 .62 Curb 4x4 5y2 -78 Curb 31/2x6 6J/2 .82 Comb, curb 1 x 3% 8% The above prices are for tampers with wooden
. Handbook of construction plant, its cost and efficiency. es are asfollows, No. 1 having steel plate base, No. 2 a cast plate baseand No. 3 a round cast plate base: Size Base Weight Price Price No. (Ins.) Finished Each per Doz. 1 8 x8 13 $ $ 1 10 xlO 16 1 12 xl2 26 2 5x6 9 .78 2 6x7 13 .01 2 7x8 14 .98 2 8 x 8 15 2 10 xlO 20 2 5 x 6 24 3 7 20 Curb 1 x 31/2 3 .62 Curb 4x4 5y2 -78 Curb 31/2x6 6J/2 .82 Comb, curb 1 x 3% 8% The above prices are for tampers with wooden Rammers. Net prices at Chicago for pavjng rammersare as follows: Kind Weight (Lbs.) Price, Each Granite rammer 56 $ Cobblestone rammer 50 A Power Tamping- Machine, Fig. 292, consists of a two-wheeledtruck on the rear end of which is an air-cooled gasoline engine,battery box and gasoline tank, which drives by a belt a hard-wood lifting board with a cast iron head. This tamper is liftedby the power engine and allowed to fall by gravity. Only one. Fig. 292. Power Tamping Machine. man is necessary to operate the machine, and the manufacturerclaims that it will strike 60 blows per minute or 28,800 per eighthour day. On this basis and allowing 50 per cent for lost timeand wasted strokes, the head, the area of which is y2 sq. ft., will TAMPERS 613 cover 7,200 square feet in one day, or in a trench 3 feet wide and5 feet deep, tamped in 6-inch layers, will cover 240 lineal feet oftrench. It is claimed that the machine will do the work of fiveor six men. The standard machine will strike in a trench from1 to 4% ft. wide from 6 ft. in depth to the surface. Length ofstroke, 2 ft.; weight of tamper, 85 lbs.; size of head, 8x9; 1H. P. gasoline engine consuming iy2 gallons of gasoline in tenhours; wheels, 4x36 steel; net weight, 950 lbs.; shipping weight,1,200 lbs.; price, $300. Compressed-Air Driven Rammers, Fig. 293, for use in foundriesare comparatively a recent innovation, but f
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
