Identifier: sanitaryengineer00lath (find matches)
Title: Sanitary engineering : a guide to the construction of works of sewerage and house drainage, with tables for facilitating the calculations of the engineer
Year: 1878 (1870s)
Authors: Latham, Baldwin, d. 1917
Subjects: Sewerage Sewage Drainage, Sanitary
Publisher: London New York : E. & F.N. Spon
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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ewage from thehigher portion of the town, across a valley, by an in-verted syphon 12 inches diameter, and 1000 yards long,to the highest portion of the irrigated land, and thesewage of the lower district was passed by a sewerunder the rising ground to the lowest irrigated fields. In this Eugby syphon, arrangements were made byproviding an outlet at the lowest point of the valleywhich communicated with the low-level sewer and thelower irrigated fields, by which means the syphon couldbe flushed out when required. There is a syphon on the sewerage works at Hamburg,in which the velocity maintained is so great that, forthe edification of visitors, cannon-balls are transmittedthrough it by their own impetus and the velocity of thecurrent. In the construction of long inverted syphons ventila-tion must not be omitted, especially in the descending Flushing of Rugby syphon. Syphon atHamburg. Ventilation ofsyphons. BALDWIN LATHAMS SANITARY ENGINEERING PLATE S ■ XX LAYING THE SYPHONS AT DANTZIC
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n.lon.EJ . Ci , I INVERTED SYPHONS. 475 leg of the syphon, or otherwise an accumulation of air, or gas, may greatly interfere with its discharging power. The simplest mode of ventilating syphons is Modeofventi- by pipes carried up to such a level, that if the flow a mg syp ons through the syphon is interrupted, the ventilating pipes will not overflow. Ball ventilating valves, similar to those used in lines of water pipes, are not suitable for sewage works, as the author found from experience that the frothy matter which escapes carries with it solid deposit, which soon blocks up the apparatus. For the purpose of calculating the discharge of a syphon Discharge of pipe, it may be treated as an ordinary pipe, provided syp ons* that if there are any bends the resistance offered by them must first be calculated by the formula given at page 166. The head necessary to overcome the friction of the bends being ascertained, and deducted from the actual head of water on the syphons, will give th

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