Where the Works are for SEWERAGE, the following particulars will be necessary :

I. A map of the district to be sewered on a
scale of not more than 220 feet to one
inch, showing the dimensions and
course of all proposed sewers, positions
of manholes, ventilators, and gully-
traps, the inclination of each sewer or
pipe sewer from point to point, and
the heights at each of such points of
the surface of the streets, and of the
lowest interior part of the sewer or pipe
sewer, both expressed in feet and
decimals over a fixed common reference
datum point, referred to Ordnance
Datum.

II. The course, dimensions, and levels of
existing sewers, and information as to
how they are to be dealt with.

III. In case of a discharge into tidal waters
being proposed, a map of the district
adjoining the outfall, corrected, to date,
as to new buildings. The lines and
levels of High and Low Water, Springs
and Neaps, should be shown, and any
information available as to outside
soundings and currents should be given.
N.B.-The consent of the Board of Trade must
be obtained to the execution of any works below
High Water Mark.

IV. A statement of the area contributing to each outfall, with its population.

V. Any special duty likely to be thrown on the sewers from factories.

VI. If there is a probability of a neighbouring
district seeking to use the proposed
sewers, full particulars as to area, popu-
lation, etc., of such district to be given.
VII. Are any portions of the proposed works
to be situate outside the district?

VIII. In what manner and where the sewage
is to be disposed of, having regard to
the provisions of the 19th Section of
the Public Health Act, 1878, which
forbids any Sanitary Authority to
make or use any sewer, drain, or
outfall for the purpose of conveying
sewage or filthy water into any
natural stream, or watercourse, or
into any canal, pond or lake until
such sewage or filthy water is freed
from all excrementitious or other foul
or noxious matter, such as would
affect or deteriorate the purity and
quality of the water in such stream
or watercourse, or in such canal,
“pond, or lake; also observing the
provisions of the Rivers Pollution Pre-
vention Act, 1876, 39 and 40 Vic.,

сар. 75.

"

Suggestions as to the Preparation of Plans, etc.

Elevations, plans, and sections of structural works should be on a scale of not more than eight feet to one inch. The scale of the general plans should be the same as the horizontal scale of the sections, and the vertical scale of sections of sewers should be of not more than ten feet to one inch. Copies of drawings and plans on tracing linen are preferable to copies on paper. When it is practicable, plans and tracings are much more conveniently transmitted folded than in a roll.

Specifications should contain clauses as to payments and retention money; term of completion of work; penalty for default; extras and alterations (orders for which should, in all cases, be specified as having to be made by the Council); sub-letting; annulling of contract for insufficient progress; responsibility of contractor for damages by trespass or otherwise; term of maintenance; and settlement of disputes.

In the case of laying pipes or sewers, inspection and testing previous to the work being covered up should be provided for.

In the case of cast-iron pipes under pressure the specification should require that they should be actually tested. The weight of pipes is best specified by stating the weight of a pipe-length (in the work) for each size.

Cement should be subject to specified tests for strength, fineness, and weight.

The joints of pipe sewers should be made with cement mortar, and the specification should provide for thoroughly clearing the pipes after jointing.

FORM IV.

Rural District Council.