. Engineering and Contracting . ficit of$6,116,000. This is about per cent of the amount investedin constructed projects, or per cent of the total ultimatecost. It is probable that a portion of the deficit in the oper-ating account will be returned by the increase of operationand maintenance charges for future years, so that the actualdeficit upon completion of all units and projects which havebeen constructed and operated may be less than the figuregiven above. Cast Iron Pipe Prices—1903-1919 The accompanying diagrams reproduced from The IronAge of Jan. 1, 1920, show the course of pri
. Engineering and Contracting . ficit of$6,116,000. This is about per cent of the amount investedin constructed projects, or per cent of the total ultimatecost. It is probable that a portion of the deficit in the oper-ating account will be returned by the increase of operationand maintenance charges for future years, so that the actualdeficit upon completion of all units and projects which havebeen constructed and operated may be less than the figuregiven above. Cast Iron Pipe Prices—1903-1919 The accompanying diagrams reproduced from The IronAge of Jan. 1, 1920, show the course of prices for the past17 years on 6-in. cast iron water pipes, f. o. b. New York, incarload lots, per ton of 2,000 lb. The prices for the pastfour years have been plotted on a larger scale to show infuller detail the great increase in cost resulting from warconditions. The prices for the first 7 years were furnishedby Daniel Runkle, at that time w-itb the Warren Foundry &Machine Co., 11 Broadway, New York, and for the remainder. Cast-:Price Course o Iron Pipe Gray Forge Pig Iron f Cast Iron Pipe and Gray Forg of the period covered were averaged from weekly quotationsin The Iron Age. To show how closely cast-iron pipe prices follow the fluc-tuations in pig iron a curve has been added giving the courseof prices at Philadelphia and vicinity on gray forge pig iron,which is largely used in making pipe. These prices, onwhich this curve is constructed, have been averaged fromweekly prices in The Iron Age. for 1916-1919. Collapse of 14 Ft. Sewer inPhiladelphia Interesting particulars regarding the collapse of a of 14-ft. sewer in Courtland St., Philadelphia, aregiven in the recently issued report of the Bureau of Surveys forthe year ending Dec. 31, 1918. The sewer failed on Aug. 12,during the heaviest recorded rainfall in the history of thecity. At the time of the failure of the sewer, a large touringautomobile, standing along the north curb of Courtland St.,was carried down w
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