File:First-Nineteenth annual report of the Metropolitan water and sewerage board 1901-1919 (1902) (14778768214).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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150 feet. The whole of the tunnel, wdth the exceptionof 40 feet, has been excavated during the period under review.The average rate of excavation in tunnel was 17 feet per week,with a maximum of 46 feet. Section 73, West Roxhury. Division Engineer in Charge, — C. Barton Pratt. Conirac^or. — National Contracting Company, New York, N. Y. This 9-foot circular sewer, in South and Centre streets, extendsfrom near St. Joseph Street to near Boylston Street, a distance of4,775 feet. The entire length is designed to be in tunnel, at anaverage depth of about 50 feet. In view of the probable use ofcompressed air with shields in the whole or portions of the work, acircular cross-section is adopted in place of the usual horse-shoetype of sewer. Of the total length of 4,775 feet, about 1,400 feet of the tunnelheadings will be in Roxbury pudding-stone, and the remainder insand. Two shafts have been sunk to grade, one near LakevillePlace, in rock; the other at Pond Street, in sand. The excavation
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No. 57.) AND SEWERAGE BOARD. 197 at the former was begun December 1, 1900, and completed February7, 1901. The latter was begun February 1 and completed May 1,1901. To date, 1,350 feet of rock heading have been excavated,located about equally north and south of the shaft in Lakeville Place.About 100 feet of concrete invert have been built in this length. At the Pond Street shaft a metallic shield and air compressorswere installed Jul)^ 1, 1901, and a start was made to drive a south-erly heading from this shaft by the pneumatic process. To date, nosubstantial progress has been made with this portion of the section. Section 74, West Roxbury and Roxhury. Division Engineer in Charge. — C. Barton Pratt.Contractor. — H. P. Nawn, Boston, Mass. Commencing in Centre Street, near Boylston Street, in WestRoxbury, this sewer extends through Centre and Day streets tonear Heath Street, in Roxbury, a distance of 2,985 feet, at an aver-age depth of 54 feet, increasing to 65 feet. It is wholly in r

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