Journal of the New England Water Works Association, Volumes 11-12New England Water Works Association., 1897 - Water-supply |
Other editions - View all
Common terms and phrases
algæ amount average back filling bacteria basin Bedford Boston bottom brook Brookline cast iron cent Chestnut Hill Reservoir Civil Engineer cleaning Cochituate color Company connection construction contractor cost Crandall depth diameter diatoms England Water experience feet filtered water filtration fire flow forgings Fuller gallons gate George gravel ground water growth Haskell hydrants inches iron pipe June June 12 laid Lake Lake Cochituate leak Lynn Mass material Mattapan metal miles organisms paper Piezometer pond pounds President pressure Provincetown pumping engines pumping station quantity ramming removed reservoir river samples sand service pipes spring square steam steel street Superintendent tion town trench trouble typhoid fever unfiltered valves Walden Pond Water Board Water Commissioner Water Meter water supply WATER WORKS ASSOCIATION Woonsocket York City
Popular passages
Page 63 - Committee be received, accepted and placed on file, and that the Secretary be directed to cast the ballot of the Association for the election to membership in the Association of the applicants recommended by the report of the Committee on New Members.
Page 137 - Still greater differences are found in specifications for sheets and steel castings. Not only are there great differences for quality, but there are also no uniform methods of testing and inspection.
Page 134 - The broken pins showed what has been called " a fracture in detail," a gradual parting of the steel extending inward all around the piece, undoubtedly produced by the working strains repeatedly approaching the low elastic limit of the soft steel. On substituting a steel with an elastic limit of 45,000 pounds, failures were greatly diminished, and that, without changing the diameter or shape of the pin.
Page 138 - The gage of shell plating shall be given in table and shall have a tensile strength of not less than 50,000 pounds per square inch and an elongation of at least 20 percent in a gage length of 8 inches, or of wrought iron having a minimum tensile strength of 45,000 pounds per square inch and a minimum elongation of 12 percent in 8 inches ; or of other approved metals.
Page 357 - Committee was adopted, and the Secretary was directed to cast the ballot of the Association for the persons nominated.
Page 182 - The cast iron used in all other parts of this construction shall be of superior quality, tough and of even grain, and shall possess a tensile strength of not less than 22,000 pounds per square inch. Test bars of the metal 2 inches by...
Page 183 - All of the wrought iron used shall be tough, fibrous and uniform in character, and specimens broken in the testing machine shall show a tensile strength of not less than 50,000 pounds per square inch, with an elongation of 18 per cent.
Page 5 - Horn-polyp," Cordylophora lacustris. It covered the mussel shells and occupied all the space between the sponges. The stalks reached a length of an inch or more. On and between the Cordylophora swarmed countless numbers of Vorticella, Acineta, and other infusoria and rotifers. These organisms had no lack of food material and the absence of light protected them from many foes which, in the light, thin out their ranks. Over all these animals Crenothrix was found growing in abundance. The shells of...
Page 1 - In the summer, when the temperature of the water is high and when the organisms in the water and those growing in the pipes are passing rapidly through stages of growth and decay, there is a considerable increase. This is seen best by the aid of the diagram (Plate II.).
Page 63 - The Nominating Committee reported the following list of officers for the ensuing year, who were subsequently elected : For President, DR.