. Water & sewage works . WORKERS INTHE FIELD m Rapid Concrete Bridge Construc-tion The Editor of Municipal Engineekixg: Sir—The Union street bridge at Dan-ville, Va., is 1,060 feet long, 22-foot road-way. It contains about 160 tons of steel,round bars, and 3,000 cubic yards of con-crete. The foundations are on solid rockand all shallow, as river currents pre-vented any dirt from lodging. The design was furnished by Wilbur ahead, as forms had to stay in thirtydays. The old bridge was quite an advantagein the construction, and a dry summerwas another advantage. Work was car-ried on night and day
. Water & sewage works . WORKERS INTHE FIELD m Rapid Concrete Bridge Construc-tion The Editor of Municipal Engineekixg: Sir—The Union street bridge at Dan-ville, Va., is 1,060 feet long, 22-foot road-way. It contains about 160 tons of steel,round bars, and 3,000 cubic yards of con-crete. The foundations are on solid rockand all shallow, as river currents pre-vented any dirt from lodging. The design was furnished by Wilbur ahead, as forms had to stay in thirtydays. The old bridge was quite an advantagein the construction, and a dry summerwas another advantage. Work was car-ried on night and day. A Ransome %-yard mixer, two side dump cars and twomules included all the plant used. Stone was shipped twenty miles; sandwas taken from the river nearby; OldDominion cement used: steel was fur-nished by the Carnegie Steel REINFORCED CONCRETE BRIDGE on Union Street, Danville, Va. J. Watson, Cleveland, Ohio, and two ribscarry the floor system which is 14 inchesthick without paving, that to be put onwhenever the concrete floor wears enoughto warrant it. There was an old wooden bridge thereand that was torn out as the new onewas built, tearing out one span at a timeand using the old bridge to carry theconcrete to the new span, and using theold timbers for false work to hold up theconcrete. There are thirteen 80-footarches. The third arch was 90 per cent,complete when a defective timber in thebracing gave way and the span fell intothe river. Despite that the structure wasfinished sixty-five days ahead of contracttime and opened to traflSc thirty-five days July ;9;.i Danville is the largest loose-leaf to-bacco market in the country, and a largepart of the tobacco comes in by wagonover this bridge, and it was very impor-tant to get the structure finished betweenseasons. That result was easily accom-plished, t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsewerage, bookyear191
