Public works . which is pointedat both ends and batters slightly to a width of 34feet and a length of 155 feet at the coping. It isfaced with eleven 2-foot courses of granite, headersand stretchers, all cut to plan. Above the copingthere are granite skew-backs 5 feet 3 inches high,to receive the ends of the arch ribs. To reduce the volume of concrete and diminishthe foundation load, the pier is made hollow witheight chambers 19 feet long parallel to the bridgeaxis and 29 feet high, the widths varying from 5feet 6 inches to 23 feet 10 inches. The chambersare separated by concrete walls 45<^
Public works . which is pointedat both ends and batters slightly to a width of 34feet and a length of 155 feet at the coping. It isfaced with eleven 2-foot courses of granite, headersand stretchers, all cut to plan. Above the copingthere are granite skew-backs 5 feet 3 inches high,to receive the ends of the arch ribs. To reduce the volume of concrete and diminishthe foundation load, the pier is made hollow witheight chambers 19 feet long parallel to the bridgeaxis and 29 feet high, the widths varying from 5feet 6 inches to 23 feet 10 inches. The chambersare separated by concrete walls 45<^ feet thick, cov-ered by reinforced concrete deck slabs 2 feet thick,and accessible through covered manholes in thedeck. The outer walls of the chambers or the sidesof the piers are at least 7 feet thick. Intermediate pier 6, adjacent to the east abutment,has a 42xl09-foot footing supported on 950 founda-tion piles, and the lower base is reinforced by 1-inchsteel bars Syi inches apart on centers in a horizontal. QCCOrrji; UiHHPIBI ? ^?¥PIP[F? ?i WlfU TIMtrtJ ? ITTOHU.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
