. Engineering and Contracting . _,(M Jo U C O Maximum 68,100,000 Minimum Average 13, Algiers Plant—1910-1918. Maximum ,000 Minimum 91,000 153 Average 2, GRAINS OF LIME AND IRON PER GAL. USED IN TREATING WATER. Carrollton Plant—1909-1919. Lime. Iron. Maximum Minimum Averape Algiers Plant—1910-1918. Maximum Minimum Average Labor Cost of Constructing Mon-olithic Concrete Sewers By D. B. DAVIS,
. Engineering and Contracting . _,(M Jo U C O Maximum 68,100,000 Minimum Average 13, Algiers Plant—1910-1918. Maximum ,000 Minimum 91,000 153 Average 2, GRAINS OF LIME AND IRON PER GAL. USED IN TREATING WATER. Carrollton Plant—1909-1919. Lime. Iron. Maximum Minimum Averape Algiers Plant—1910-1918. Maximum Minimum Average Labor Cost of Constructing Mon-olithic Concrete Sewers By D. B. DAVIS, I \\\ Civil Engineer, Richmond. lollciwing data show the labor required and the pro-cedure foUowid in constuicting a 4S-in. diameter monolithicconcrete sewor in Richmond, Ind., on which serai-circularforms were used. The contractor had 100 lin. ft. of the haltcircle forms, of which he used 50 ft. tor invert and 50 ftrfor tho :inii The concrete was machine mixed; the wheel ?-? r-x ;• 5 l-Scre^-^^ J-H 1 A A A. Fig. 1 — Hard Wood Forms for Sewer Connection. being about lOO ft. from the mixer to the forms. The menwere good workers. The order of the days work was as follows:6:30 a. m. to 9:30 a. m.—Sliding invert forms ahead and :30 a. m. to 11:15 a. m.—Pouring concrete :15 a. m. to 2:30 p. m. (1 hour for dinner)—Moving and settingarch :30 p. m. to 4:00 p. m.—-Pouring concrete :00 p. m. to 5:30 p. m.—Pouring flow-line strip 2 ft. wide. The labor required for days run of 50 ft. of sewer was: Total Invert forms—8 men !n gang 24 1curing invert—12 men in gang 21 Arch forms—6 men in gang 13 Pouring arch—10 men In gang 15 Ioui-ing base strip—10 men in gang IS Total labor, hours 91 Or labor hours per lineal foot. The organization of concreting gang was: 2 men spreading and tampins concrete about forms. ;! men shoveling gravel in mixer. ?! men wheeling concrete a distance of 100 fttt. 1 man rirning conc
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