CO129-185 - Acting Governor Marsh Governor Hennessy - 1879 [6-12] — Page 363

362

1.

the

Intercepting

Math

Sewers. The bracing-

attached. shows

which the sewers of the

Central District of the town have been joined together under the

new Embank.

ment with the object of reducing

A minim

to

this outlet openings along

the newly built wall.

This

less mussary on sanitary grounds

than in

order to increase the strength = of the structure which should present as few perforations as possible of typhoon practicabler

tead

were

Curve of

of

the

The largest radic adopted for the

ww sewers

interception and as

points of interception

of them have been built on

of construction are bracing. The best

the old sea wall,

set forth

of the

44

The

graints of

where the stove

found completity sound, to make close joints and

Wa

ka

wad

pedressed.

utilized

in the sewer work, the blocks being

hydraulic lime mortar

laid in

on.

foundation of hydraulic home concrete,

the

masonry being pointed in Portland

filling

the trenches left

Cement.

In

by the removal of the old sewers due

precaution earth in thin layers

was taken to

Lown the

pan

so no to precont

subsequent subsidence. In the whole

length of wall newly reconstructed

large

mullah or

main drain ( Outlet No.4) designed

and

at the

mosh

there is but

Azue...

gradient

of about 1 in 2.0,

the flow of

The

sewage

to

accommodate Storm waters

Car

per

become sluggish

bridled at the curves.

obs.

although it was

The details

of

deviating from.

important sanitary rule to lead

At

house.