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certain manholes and minor works to allow of their more efficient ventilation and
cleansing.
Broke, Brougham (Part) and Norwich Roads.
In place of the defective 3 ft. 9 in. x 2 ft. G in. brick sewer in Broke Road, 2 ft. 0 in. x
2 ft. 0 in. barrel in Brougham Road (between Broke and Pownall Roads), and 3 ft. 0 in.
X2 ft. 0 in. and 2 ft. 0 in.x2 ft. 0 in. brick sewers in Norwich Road at depths varying
from 5 ft. 6 in. to 14 ft. 0 in., it is proposed to construct a main 3 ft. 9 in. x 2 ft. 6 in. brick
sewer having a gradient of 1 in 350 between Queen's Road and Marlborough Road, 1 in 300
between Marlborough Road and Brougham Road, and 1 in 250 between Broke Road and
Regent's Row.
The gradients are sufficient to allow of the sewer being self-cleansing, and would give
depth enough for the drainage of the basements before referred to.
This brick sewer is advisable so as to afford ponding room during heavy storms when
the Queen's Road sewer is gorged, and would further prevent the basements of the houses
in Marlborough Road being flooded at such times.
The invert of this sewer at its outfall will be 3 ft. 0 in. above that of the intercepting
sewer in Queen's Road, and it will be 24 ft. 6 in. deep at that point; at Marlborough Road
19 ft. 6 in. deep; at Brougham Road 16 ft. 0 in. deep; at Pownall Road 14 ft. 0 in. deep
and Regent's Row 12 ft. 0 in. deep.
Regent's Row.
Along a portion of Regent's Row a new 15 in. pipe sewer is proposed, extending from
the end of the brick sewer to Ipswich Road, and thence a 9 in. pipe sewer to a manhole,
opposite No. 33, which joins up to the present 12 in. pipe sewer, at which point the new
sewer will be 10 ft. 0 in. deep as before stated, allowing of a gradient of 1 in 150. This
sewer will supersede the present short lengths of 12 in. pipe.
Suffolk Road.
A 12 in. pipe at a gradient of 1 in 120 will be substituted for the present 2 ft. 0 in. x
2 ft. 0 in. barrel at depths varying from 11 ft. 0 in. to 12 ft. 0 in., and discharging into the
new brick sewer.
Pownall Road.
A 15 in. pipe at a gradient of 1 in 120 will be substituted for the present 3 ft 9 in.
X2 ft. 6 in. sewer between Ipswich and Norwich Road ; its depth being from 12 ft. 0 in
to 13 ft. 0 in., this also discharges into the new brick sewer.
Ipswich Road.
A 12 in. pipe at a gradient of 1 in 120 will be substituted for the existing 3 ft. 0 in. x
2 ft. 0 in. brick sewer, its depth being from 10 ft. 0 in. to 12 ft. 0 in. and points of
discharge the summit of the new 15 in. pipe sewer in Pownall Road, and the 15 in. pipe
sewer in Regent's Row.
Brougham Road.
The new main arterial 3 ft. 9 in. x 2 ft. 6 in. brick sewer at a gradient of 1 in 250
will be substituted for the existing 2 ft. 0 in. X 2 ft. 0 in. barrel, at a depth of from 14 to
16 feet, between Broke Road and Pownall Road.
Between Broke Road and Marlborough Road 12 in. and 15 in. pipe sewers at gradients
of 1 in 120, and at depths varying from 10 ft. 9 in. to 15 ft. 0 in., will be substituted for
the existing 2ft. 0 in. x 2 ft. barrel, and will discharge into the new brick main sewer in
Broke Road,