Canadian engineer . e work. A couple more conferences were held in June, the hard-ness of the excavation and the unforseen difficulties of un-watering being discussed. With an active manager, a goodscheme and better rate of progress were achieved duringJuly and August, 1910; but this, the third, manager leavingat the end of July, the work became disorganized in amonth. The time for completing the contract was extendedfrom 22nd July to end of December, 1910. Concrete.—When the foundation pit was pumped dn%25th June, iQio, the concrete was found in good condition,although laid during the winter
Canadian engineer . e work. A couple more conferences were held in June, the hard-ness of the excavation and the unforseen difficulties of un-watering being discussed. With an active manager, a goodscheme and better rate of progress were achieved duringJuly and August, 1910; but this, the third, manager leavingat the end of July, the work became disorganized in amonth. The time for completing the contract was extendedfrom 22nd July to end of December, 1910. Concrete.—When the foundation pit was pumped dn%25th June, iQio, the concrete was found in good condition,although laid during the winter and flooded before the suncould hasten its set. By the first week of July, forms were erected to halfheight for seven piers and concreting was resumed on theplatform and aprons. A good speed was attained, andduring- August the most work was done, although the firmchanged their manager on the first of the month. In September, the concrete work on the Ontario sluice-ways was finished and no more has since been Fig. 3.—Timiskaming Dam. Ontario Sluiceways from Be-low, Showing Water on Lower Apron and Stop:>LogsPiled on Roadway. The piers and abutments are very fine samples of massconcrete work, the finish is good and the alignment particu-larly accurate. The history of the concrete building in the Ontariosluiceways, during an unusually cold winter, is interesting. Work began 12th February, 1910, and continued tillApril. Gravel of fair quality, but sandy, was the only avail-able material and the mixing was done by machine. Largeboulders were used as displacers in the concrete, each beingtJioroughly steamed to clean off ice before laying. Thegravel and sand were stored in a bin that was heated bysteam pipes and the water was also warmed. After laying,a movable steam radiator was set in place, and the masscovered with tarpaulins, so that all night the temperaturewas kept above freezing. The trench, into which the mix-ture, averaging 70° Fahrenheit, was placed, had, unfo
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893
