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the said houses were built is about 18 inches or 2 feet below such
lowest floor, viz., about 5 feet or 5 feet 6 inches above Ordnance
datum. Trinity high-water mark is about 12½ feet above
Ordnance datum, so that such land is about 7 feet to 7 feet
6 inches below Trinity high-water mark.
Provision was made by the appellant for draining the said
houses into a sewer belonging to this Council in Ransom Road,
which sewer had a diameter of 15 inches, and falling towards and
opening into the London County Council southern main outfall
sewer. The said outfall sewer is of circular section, having an
internal diameter of 11 feet G inches, the invert being 22 feet
6 inches below the surface in the Woolwich Road; the inner side
of the arch is 5.5 feet above Ordnance datum, so that the
appellant's land, on which the said houses were built, is, as nearly
as may be, on the same level as the inner or lower side of the arch
of this sewer. The Ransom Road sewer is connected with the
said outfall sewer at a point about half way up its side, and the
opening is protected by a hinged flap which, when the outfall
sewer becomes flooded, closes, or should close automatically, and
so prevent the Metropolitan sewage flowing along the outfall
sewer from passing up into the Ransom Road sewer. The outfall
sewer is discharged and emptied by means of a Pumping Station at
Crow's Nest, erected for that purpose, and under the control and
management of the London County Council. The Ransom Road
sewer was constructed and connected with the said outfall sewer
in accordance with the necessary sanction and permission of the
London County Council. The total length of the drain provided
by the appellant is about 250 feet, the fall being about 1 inch in
4 feet. The drains of the houses are laid in the back gardens, in
concrete, at a depth commencing from the furthermost house of