Report to the hon. Commissioners of Sewers of the City of London, of the results of the gaugings of the sewers discharging within the limits of the City of London, during the year 1853 / by William Haywood.

  • Haywood, William.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Report to the hon. Commissioners of Sewers of the City of London, of the results of the gaugings of the sewers discharging within the limits of the City of London, during the year 1853 / by William Haywood. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    between the hour of 4 and 5 a.m., duiing these four hours but 7-78 per cent, of the whole daily discharge takes place. From 5 to 9 a.m. the discharge gradually but rapidly increases, and in the four hours ending 9 A.M. the total discharge is 14'42 per cent, of the whole days, or double that of the four preceding hours. From 9 a.m. the discharge increases less rapidly, it reaches its highest point at 11 a.m., at which moment it is 3501 cubic feet -per minute; it con- tinues nearly at that rate until 1 p.m. and then begins slowly to decrease; at 2 p.m. it is nearly the same as at 9 a.m ; at 3 p.m. somewhat less, and it then falls off rapidly until 5 p.m. ; the eight hours of the greatest discharge are between 9 a.m. and 5 p.m., during which time 4897 per cent., or nearly one-half of the whole daily discharge takes place. From 5 to 6 p.m. the discharge is nearly the same, it then declmes slightly until 7, during that time 10*32 per cent, of the whole runs off; from 7 to 11 p.m. it falls off rapidly, and during those four hours 14*17 per cent, is discharged; from 11 P.M. to 1a m. but 4-44 per cent, runs off, and this completes the circle of twenty-four hours.