Sewerage: The Designing, Constructing and Maintaining of Sewerage Systems and Sewage Treatment PlantsJ. Wiley & Sons, 1918 - 473 páginas |
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Página xii
... Excavating and Back - filling Trenches . . 19. Cost of Laying Sewer - pipe ... 20. Cost of Manholes .... 21. Amount of Excremental Organic Matter in Sewage . 23. Analyses of Sewage of Several Cities ... 33333 57 65 67 70 71 74 164 178 ...
... Excavating and Back - filling Trenches . . 19. Cost of Laying Sewer - pipe ... 20. Cost of Manholes .... 21. Amount of Excremental Organic Matter in Sewage . 23. Analyses of Sewage of Several Cities ... 33333 57 65 67 70 71 74 164 178 ...
Página 119
... excavation to recover the pipes it will be a waste of money to do so . Owing to the difference in character and volume of house and storm sewage , a sewer not adapted for use as a separate or combined sewer may often be used as a storm ...
... excavation to recover the pipes it will be a waste of money to do so . Owing to the difference in character and volume of house and storm sewage , a sewer not adapted for use as a separate or combined sewer may often be used as a storm ...
Página 122
... excavation . It would be possible in many cases to use only one pumping station , all of the outfall sewer beyond it being laid at a practically uniform depth , regardless of grade , and acting as a force main ; but the cost of such a ...
... excavation . It would be possible in many cases to use only one pumping station , all of the outfall sewer beyond it being laid at a practically uniform depth , regardless of grade , and acting as a force main ; but the cost of such a ...
Página 137
... excavated ; although when neither rock nor quicksand is anticipated it is seldom of a service com- mensurate with the cost . In sounding for rock several methods have been used . An iron rod , upset and pointed at one end , may be ...
... excavated ; although when neither rock nor quicksand is anticipated it is seldom of a service com- mensurate with the cost . In sounding for rock several methods have been used . An iron rod , upset and pointed at one end , may be ...
Página 138
... cases impervious . The presence and amount of ground water can be known only by excavating or from existing wells or pipe wells driven for the purpose . CHAPTER VIII DESIGNING No general directions for designing a sewerage 138 SEWERAGE.
... cases impervious . The presence and amount of ground water can be known only by excavating or from existing wells or pipe wells driven for the purpose . CHAPTER VIII DESIGNING No general directions for designing a sewerage 138 SEWERAGE.
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Términos y frases comunes
amount average backfilling bacteria basins bottom branch brick broken stone built calculated catch-basins cent cleaning combined sewers concrete sewers connection construction Contractor Cover.-The contract price cubic feet cubic foot curve deposits depth designed diameter discharge district drains Engineer enter excavation factor of safety feet per second flowing full flush-tank flushing formula furnish gallons given grade ground water gutter house sewage house-connections hydraulic gradient imperviousness inches inlet inspection inverted siphon joints labor and materials laid length less manhole masonry materials required maximum method minimum minute mortar necessary organic matter outfall outlet pavement pipe sewers placed plant plumb-bob Price to Cover.-The pumping reinforcement removed rock run-off sand separate sewers sewage flow sewerage shown sidewalks soil specified steel storm sewers storm-water stream street sub-drain sufficient surface tank thickness tion trench velocity velocity of flow vertical vitrified clay pipe wetted perimeter
Pasajes populares
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.