Annual report of the City Engineer . isshown on opposite page by gauge dials from Long Islandtaken before and after the line was turned on. The flexible pipes were laid in a trench 5 feet deep bymeans of a long chute extending from the deck of a lighter tothe bottom of the trench, the Hghter being pulled ahead aseach pipe was jointed. The pipes were tested for leakagebefore the trench was refilled and again after refilling, and theactual leakage found, under 85 pounds pressure, in the twolines after the completion of the work was as follows: 3,534 linear feet, 4-inch, Long to Rainsford,
Annual report of the City Engineer . isshown on opposite page by gauge dials from Long Islandtaken before and after the line was turned on. The flexible pipes were laid in a trench 5 feet deep bymeans of a long chute extending from the deck of a lighter tothe bottom of the trench, the Hghter being pulled ahead aseach pipe was jointed. The pipes were tested for leakagebefore the trench was refilled and again after refilling, and theactual leakage found, under 85 pounds pressure, in the twolines after the completion of the work was as follows: 3,534 linear feet, 4-inch, Long to Rainsford, cubic feet per ,231 linear feet, 12-inch, Moon to Long, cubic feet per minute. The 20-inch and 30-inch low service and 16-inch highservice mains on Warren Bridge are in a very unsafe location,the 30-inch and 16-inch pipes being particularly a source ofanxiety, as they have already failed several times by pulling GAUGE DIALS FROM LONG ISLAND SHOWING INCREASE PRESSUREDUE TO 12-INCH LINE LAID BETWEEN MOON AND LONG ISLANDS. December 8, 1908.
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Keywords: ., bookauth, bookcentury1800, bookdecade1860, booksubjectpublicworks
