Engineering and Contracting . oncreteconduit (see Fig. 13) 400 ft. long, involv-ing 2,341 cu. yd. excavation, 500 cu. fill, 24,171 lb. steel, 235 cu. yd. con-crete and 55 yd. paving. The pipe hadwalls 6 in. thick with wing walls at eitherend 9 in. en top with a batter of 1 in the entrance was a spillway emptying?into Exeter Creek. The excavation for the pipe was made ona 1 to 1 slope to 6 in. below the center line,leaving a 12 in. bench. Below this pointthe earth was used for the outside form ofthe concrete. The greater part of the ex-cavation was done with 5 ft. Fresnoes, thefin
Engineering and Contracting . oncreteconduit (see Fig. 13) 400 ft. long, involv-ing 2,341 cu. yd. excavation, 500 cu. fill, 24,171 lb. steel, 235 cu. yd. con-crete and 55 yd. paving. The pipe hadwalls 6 in. thick with wing walls at eitherend 9 in. en top with a batter of 1 in the entrance was a spillway emptying?into Exeter Creek. The excavation for the pipe was made ona 1 to 1 slope to 6 in. below the center line,leaving a 12 in. bench. Below this pointthe earth was used for the outside form ofthe concrete. The greater part of the ex-cavation was done with 5 ft. Fresnoes, thefinishing being done with drag scrapers andshovels. The reinforcing steel for around the pipewas bent in circles en a table, and tied. Itwas then erected in the ditch and the hori-zontals tied on :ifter which it was blockedto bring it to the center of the finished con-crete. The concrete was then placed in the bot-tom and spread with a templet, covering alittle more than one-sixth cf the circumfer- 128 ENGINEERINGAND CONTRACTING. CANAL STRUCTURES, SECOND UNIT, DODSON CANAL MILK RIV ER PROJECT, U. S. RECLAMATION SERVICE.(1) Steel Cutting and Bending Yard. (2) Dry Rubble Paving. (3) Automatic Spillway Structure. (4) Floor Reinforcement, Box Cuivert.(5) Outli;t of Box Culvert. (6) Pipe Culvert Inlet. (7) Pipe Culvert Outlet. (8) Highway Bridge. (9) Laying Hess Flume. (10) Waste WaterDitch Outlet. (11) Check and Spillway. (12) Farm Turnout. (13) Pressure Pipe Construction. (14) Concreting Pressure Pipe. (15) MixingConcrete for Rubble Paving. (16) Construction Camp. ence of the pipe. Upon this bottom the inside forms wereerected and braced to the reinforcement. The forms were built in one-sixth of a circle, fivesegments being used, leaving out the lower section on each side extended from the invert up tothe horizontal diameter of the conduit. The second sectionreached from this diameter to the fifth or key sections atthe top. Each of the sections consisted of 2x10 in. rib
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
