CO129-098 - Sir Robinson - 1864 [4-5] — Page 284

14.

15

278

of

the

may

principal

Northern Road the drain

be 1'6" wide by binches high exclusive

of the invert in the form shewn in Margin

increasing

to 2 feet 6 inches by 1. 6° gradually at its termination with the Sea East and West in the main Central Road the

samo gradation may be arranged and at the junction with the main South Road,

where the drain will be 1'6" by 1!'6" it will

with diverge the same size and on each line South East

East and West, Commencing

and Weat be continued to the sea terminating

as

· leefore: by this arrangement, witho

flushing boxes, and trap do at the junction of these Roads, a stream of

mater may

in heavy

rains or

therwise

be conducted into each drain, or the Rewage)

6.

22.6.V

from the leantonment diverted in either

direction

if necessary.

The main drainage

however of the Cantonment will if the

present proposed levels are carried be Conducted of necessity to the S.W. Corner

of it; if that be the case at ito.

with

the the public Road it

junction

may be necessary

to increase the size of Colonial drain.

au

a

I

form

-propose to adopt the Shape drain

best suited to stone, which should be

used and not brick, in preference to the

-formation of

a curved invert, or Egg shaped

drain which would be in

expensive

infinitely

and not more

for such sized drains.

mone

effective, pratically,

At the junction of Streets immediately

in rear of Praya the drain to be 2 + 1! 6”