. Canadian engineer. fo. Fig. 8.—Elevation and Cross=section of North Abutment. SCCTION A n .vss THE CANADIAN ENGINEEE Voluine 30. ri-sls nil till rcH-k. The lype of .ibutnuiit dfcidcd uponwas a tjravity section restini; upon 30-incli walls al ()-fi.(>-in. ocntrts carried down lo roi-k and haxing the mainwall reinforced to carry over the sewer. I*iij. S showsthe elevation and a cross-section of the nortli aI)utnHnl ; RKINI ()RCi:i) CONCRETE IN SEWERS*

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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidcanadianengineer30toro