File:First-Nineteenth annual report of the Metropolitan water and sewerage board 1901-1919 (1902) (14800975783).jpg

Identifier: firstnineteentha01mass (find matches)
Title: First-Nineteenth annual report of the Metropolitan water and sewerage board ... 1901-1919
Year: 1902 (1900s)
Authors: Massachusetts. Metropolitan Water and Sewerage Board Sprague, Henry Harrison Walcott, Henry Pickering, b. 1838
Subjects: Water-supply Sewerage
Publisher: Boston : Wright & Potter printing co., state printers
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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aqueduct, 5,295 feet, including crossing under the tracks of the NewYork, New Haven & Hartford Railroad at Nobscot station; width of aqueduct, 13 feet 2inches. These contractors commenced operations very promptly, andprosecuted their work vigorously during the working season. Th6 aqueduct is principally in open trench, but at one place, fora length of 1,400 feet, the original ground surface is from 1 to 6feet below the bottom of the masonry. For that space the founda-tion was prepared by removing the soil and building an embank-ment in 3-inch layers, using water and heavy grooved rollers toconsolidate the material, and after completion the embankment wasflooded twice before laying the masonry. The material used forfilling was a very fine sand, with coarse gravel at the sides of theembankment. The masonry construction could not well be begun until a sectionof this embankment had been completed, and consequently it wasnot started until July 29 ; but excellent progress was maintained
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o No. 57.) AND SEWERAGE BOARD. 113 until it was necessary to stop on account of freezing weather. Itwas deemed desirable that this embankment, once l)egun, should bemade and the aqueduct completed before freezing weather, and byconcentrating their forces the contractors were successful in accom-plishing this result. The value of the work completed November 15 was 3G per cent,of the amount of the contract, while the contract requirement was30 per cent. A stone-crushing plant was in nearly constant operation, to fur-nish the balance of the stone not obtainable by screening the gravelexcavated from the trench. The maximum force employed on this section was 132 men and41 horses, for the week ending September 28. Section 13. — Masonry Aqueduct and Tunnel. Contractor, Michael H. Keefe; date of contract, May 20, 1901; amount of contract, $346,290;length of aqueduct, 7,300 feet, of which 5,686 feet are tunnel; width of aqueduct, 13 feet 2inches. This contract was assigned to the Columbus Co

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