Sewerage: The Designing, Constructing and Maintaining of Sewerage Systems and Sewage Treatment Plants

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J. Wiley & Sons, 1918 - 473 páginas

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Página 258 - ... due notice thereof in writing, served personally upon or left 23 at the shop, office, or usual place of abode, or with the agent of the said 24 party of the second part, and the said party of the second part...
Página 257 - Boston, for or on account of any injuries or damages received or sustained by any party or parties, by or from the said Contractor, his servants or agents...
Página 457 - ... bichromate as described in almost any work on volumetric analysis. The keeping qualities of the thiosulphate solution are improved by adding to each liter 5 cc of chloroform and 1.5 grams of ammonium carbonate before making up to the prescribed volume. 5. Starch solution. Mix a small amount of cornstarch with cold water until it becomes a thin paste. Stir this into 150 to 200 times its weight of boiling water.
Página 459 - Sutton in his new edition on Volumetric Analysis, p. 139, gives the following new method to which the reader is referred: Dissolve 4.948 grams of the purest sublimed arsenious oxide in about 250 cc of distilled water in a flask with about 20 gm. of pure sodium carbonate. The mixture needs warming and shaking ,for some time in order to complete the solution; when this is accomplished the mixture is diluted somewhat, cooled, then made up to a liter. This gives a tenth normal solution and may be checked...
Página 241 - Samples for Testing: Any or all of the following tests may be applied to samples selected by the engineer from the pipe delivered on the work. For the purpose of making such tests the contractor shall furnish and deliver, when directed, five lengths of each size pipe used in the work.
Página 259 - IN WITNESS WHEREOF, The said party of the first part has caused these presents to be signed...
Página 229 - Materials 85. Stones for rubble masonry shall be hard, sound, free from checks and shakes, as nearly rectangular as practicable, and unless used for trimming or closers, not less than 6 inches thick. The stones shall be cleaned and wetted immediately before being placed in the work; they shall be laid on their natural beds, in full beds and joints of mortar, with spalls firmly embedded therein.
Página 252 - The pavements adjoining the inlets to receiving basins shall be restored and adjusted to the extent and in the manner directed, and in accordance with paragraphs. . . .and. . . .in unpaved streets and in macadamized streets, where the inlets to the receiving basins are approximately at the surface of the street, a space of 2\ feet adjoining such inlets shall, if required, be paved with approved paving blocks.
Página 221 - The required width of trench in rock for pipe sewers, basin connections, house connections and other pipes will be such as to give a clearance of 1 foot on each side of the pipe, exclusive of spurs and hubs; the required width of trench in rock for other sewers and drains will be such as to give a clearance of one foot on each side of the structure to be built therein at its greatest external width.
Página 224 - The average of the tensile strength developed at each age by the briquettes in any set from one sample will be considered the strength of the sample at that age, excluding any results that are manifestly faulty. The average strength of briquettes at 28 days shall be greater than the average strength at 7 days, and if tests are made after 28 days the strength shall be not less than that at 28 days.

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