Engineering and Contracting . wer dis-charging into the chamber has an internal diameter of9 ft. and at these points it is enlarged to an internal di-ameter of 10 ft. Across the chamber in the plan in theshape of a Z there is a weir. On the upstream side ofthe weir is a channel by means of which the drj^ weatherflow is diverted to a drj weather flow sewer leading from 38 the overflow chamber. These connected pipes were com-puted as acting as short tubes, and in one case the in-ternal diameter is 24 ins. and in the other it is 27 in. The crest of the weir in each case is 3 ft. above thebottom o
Engineering and Contracting . wer dis-charging into the chamber has an internal diameter of9 ft. and at these points it is enlarged to an internal di-ameter of 10 ft. Across the chamber in the plan in theshape of a Z there is a weir. On the upstream side ofthe weir is a channel by means of which the drj^ weatherflow is diverted to a drj weather flow sewer leading from 38 the overflow chamber. These connected pipes were com-puted as acting as short tubes, and in one case the in-ternal diameter is 24 ins. and in the other it is 27 in. The crest of the weir in each case is 3 ft. above thebottom of the chamber. On the downstream side of theweir the sewer decreases in size by means of 16-ft. sec- ENGINEERINGAND The dr>- weather flow will in all cases, except in the caseof excessive storms, flow through the connecting pipesinto the overflow chamber and in the dry weather over-flow chambers, eventually emptying in the North ShoreChannel of the Sanitary District located at Argyle the Sanitary CONSTRUCTION VIEWS ON LARGE SEWER WORK IN NORWOOD PARK DISTRICT OF lange from 3 ft. to 9 ft. in diameter and .ire brick laid in 1:2 natural cement mcrtar. tions to the proper size of the outlet sewer, which in thecase of the Forest Glen sewer is 6 ft., and in the case ofthe Foster Ave. sewer is 6^2 ft. The paramount princi-ple in this design has been to eliminate as far as possibleall pollution from the North Branch of the Chicago River. Division of the Work. The work is divided into two sections. The first sec-tion comprises the portion of the system between the out-fall and Argyle St. and the overflow chamber at ForsetGlen Ave. and Catalpa Ave. Section 1 covers the con- I u 1 V 1 -, 19 16\\l. Xo. 2 struction of sewers in the following streets and avenues,the approximate lengths, diameters and average depthsbeing as indicated: ^^^^ ^^ Length, diameter, depth. A.^lel?reet 2% % }S_ Argyle Street ,5^ j^,- Argyle Street ^^^U .g* „i,.-.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
