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A now 9 in. pipe sewer, discharging into the now brick sower at a gradient of 1 in
100, will bo substituted for the present short length of 3 ft. 9 in. x 2 ft. 6 in. brick sower
in that portion of Brougham Road between Norwich Road and the parish boundary at a
depth of 12 ft. 0 in.
Marlborough Road.
Between Broke Road and Brownlow Road a 8 ft. 9 in. X 2 ft. 6 in. brick sewer at a
gradient of 1 in 250, and depth varying from 19 ft. 0. to 19 ft. 6 in. will bo substituted for
the existing 4 ft. 0 in. x 2 ft 8 in. sewer, the now sewer discharging into and forming a
continuation of the now main brick sewer in Broke Road, the junction between the two
being by a boll mouth.
A 12 in. pipe sower at a gradient of 1 in 100 will bo substituted for the existing 3 ft.
9 in x 2 ft. 6 in. brick sewer between Brownlow Road and Shrubland Road and will
discharge into the now brick sewer in the lower portion of this road as before stated.
The depth will vary from 12 ft. 6 in. to 14 ft. 6 in., and it is proposed to join this sewer up
to the Shrubland Road Sewer in such a manner that the water can bo diverted down it
for flushing or other purposes as may bo required.
The 12 in. pipe sewer between Broke and Pownall Roads to bo deepened.
Brownlow Road.
East of Marlborough Road a 12 in. pipe sewer, at a gradient of 1 in 75, will be
substituted for the existing 3 ft. 9 in. x 2 ft. 6 in. sewer; it will discharge into the new
brick sower in Marlborcugh Road and its depth will vary from 11 ft. 6 in. to 16 ft. 6 in.
West of Marlborough Road it is proposed to substitute for the existing 3 ft. 9 in. x
2 ft. 6 in. brick sower, a 15 in. pipe sewer for two-thirds of the length and a 12 in. pipe
sewer for the remainder, both at gradients of 1 in 120 and at depths varying from 12 ft.
0 in. to 17 ft. 3 in., the former being the depth at its summit which will be situated at
its point of junction with the existing sewer opposite the end of the gardens to the houses
fronting Queens Road which present sewer will remain undisturbed between such point
and Queens Road, to which it fails.
Outfall.
It will bo noticed that the proposed sewerage of the whole of those streets is served by
one outlet to the County Council's main line sewer in Queens Road.
Removal of Present Sewers.
The present sewers will for the most part be demolished and removed to give place to
the now sewers; but where they do not come in the line of cutting, or are not affected by
the excavation for the now sowers, they will have all sediments removed therefrom, and bo
left in and packed up solid with hard dry filling.
Inspection and Ventilation.
Manholes are proposed to bo placed at the intersections of all streets, and at all bends
or breaks in lino, either horizontally or vertically, and where the distance between such
chambers exceed 300 ft. lamp-holes will be placed. Upright ventilation shafts are proposed
to be erected at suitable points against the gable ends of certain properties by permission
of the owners.
All manholes and lampholes will bo provided with open surface gratings for the
purpose of ventilation, except where the upright shafts will bo affected thereby.