Engineering and Contracting . the gates open wide, willarrv 1,200,000 pals, per 21 hours. The diffcr-•ncc in level between the water at the intakeind that in the coagulation basin under work-c conditions is 1 ft. In general, the line was laid in the gravel anv foundation, although at points it was found necessary to support the tile withconcrete. The joints were made of 1:1 cementmortar forced into position from the inside ofthe pipe. Under working conditions the pipeis required to stand an internal pressure offrom 0 to 14 ft., and as each section of 400 completed it was tested w
Engineering and Contracting . the gates open wide, willarrv 1,200,000 pals, per 21 hours. The diffcr-•ncc in level between the water at the intakeind that in the coagulation basin under work-c conditions is 1 ft. In general, the line was laid in the gravel anv foundation, although at points it was found necessary to support the tile withconcrete. The joints were made of 1:1 cementmortar forced into position from the inside ofthe pipe. Under working conditions the pipeis required to stand an internal pressure offrom 0 to 14 ft., and as each section of 400 completed it was tested with this pressurebefore the trench was back-filled. No appre-ciable leaks were discovered. The line cost$; per lineal foot complete. ILRIFIC.\TI0N P1_\NT, Coagulation Basin.—The lower end of theintake line connects to the coagulation basin is of reinforced concrete, rectangu-lar in form and has a capacity of about 150,000gals, for about one hours flow. The wallsare 15 ins. thick at the liottom and 12 Besides being fed from the main intake, thebasin can, in case of emergency, be supplieddirect from the river beside the plant by meansof the 12-in. Worthington centrifugal pumplocated in the boiler room. This pump has acapacity of 4,000,000 gals, per day and is di-rect connected on the same base to a 25 engine. Filters.—The filters, each 12 ft. by 14 ft. 6ins., are arranged in two rows of three eachon opposite sides of the operating floor andpipe gallery. The construction is entirely ofconcrete. The floor consists of a 6-in. slabsupported on longitudinal beams which in turnare carried by the heavy beams extending fromthe center posts to the outside walls and actnot only as beams but as division walls be-tween the filters. The general arrangement isshown in Fig. 2. The 20-in. inlet pipe from the coagulationbasin runs the full length of the filter house,and is connected to each of the filters by an8-in. pipe. The water passes through thesepipes in
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
