There arises from the circumstances that owing to the level at which the foundation course of ashlar is laid, viz: one foot below low water level, during the S.W. monsoon there are comparatively few days in the year when it is possible to set the footings.
Moreover, owing to the influence of the monsoons, the tides of the China Sea are much less constant than those of the British Isles, and are largely affected by the force and direction of the wind; it is impossible to foretell with any degree of accuracy what the level of the water will be at any given period. Consequently, the number of low tides varies considerably between one year and another.
Mr. W. Bowdler, who as Acting Surveyor General since 1874 has had great experience in these matters, informs me that, taking one year with another, the number of days in which it follows that the time for putting in the foundations can be estimated at more than 85 hours per annum on average.
The length of Praya wall sanctioned by the Ordinance of 1889 is 9191 lineal feet. Judging by the experience of the past, it is probable that if the wall is built as designed, the completion of the work can hardly take less than 8 years. During construction, the amount expended will prove unremunerative, and the anticipated profit to the Lotholders will remain in abeyance. Moreover, very considerable inconvenience must be caused to the trade of the Port as long as the work is going on. It becomes, therefore, of primary importance to consider the means of accelerating the rate of progress and anticipating the final completion of the undertaking.
To accomplish both these objects, i.e., (1) to secure the consolidation of the rubble mound before building the masonry wall...
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Page 61
tr
arises from
the circumstances that owing to the level at which the foundation
foundation course
of ashlar is laid, viz : one foot below low water level___
§. W. monsoon there are compre
doups in the
year
the footings.
comparatively few
when it is possible to set
"Morcover owing to the in
owing to the influence of
the monsoons the tides of the China Sea are ~
much less constant than those
and
ao
of the British
the
Isles, they and largely affected by force and direction of the wind it is impossible to fore tell with day degree of accuracy what the level of the water will be at any given period. Consequently the member of
矍
considerably betiveer one
low tides varies
year and another.
W. Bowdler who as Acting Surveyor General
since 1874 has had great experience in these.
A
tters
informe
me that tatinng
one
year
with another the number of days in which
follo 7 follows
that the
from 2 to 3 hours, it, time for putting in the foundas
59 average~
dations cann of
be estimated at more than 85 hours pen-
arinum,
나.
The length of Praya wall sanctioned
by the Ordinance of 1889 is 9191 lineal feet.
Iudging by the experience of the past it is
probable that if
the wall is built as
completion of
the work can
designed the hardly take less than 8 years. During
8.
...
Construction the amount expended will prove tive and the anticipated profit
unremunera.
to
the Lotholders will remain in abeyance. Morcover
very
considerable inconvenience must be caused.
-long as the work is
to the trade of the Port so long
on . It becomes therefore
going
primary importance.
accelerating
for
the granite footings
can
be set
varies from
30 to 38. As the low water period
PELLATI
and the
only
average
the foundation
once not twice in the 24 hours,
duration of low water when
course can be set is
only from
a...
matten
of
to devise a me ano
the rate of progress,
and
anticipating the final completion of the undertaking.
5.
To accomplish both these objects
1. e . ( 1 ) to secure the convalidation of
rubble mound
before building the mason
!
the
nry
wali
1
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