10.
great depth of water and mud,
that
a very
Jam informed
considerable settlement has latten
place . The contractor affirms that the settlement
in the rubble mound during Construction
has alr
already
been
ao
much as 10 feet at
the south west angle. Unfortunately owing to defective technical superintendence due
insufficient Engineering Staff of the
to the
Public Works Department,
and ar
a change
in the overseer made during the progress
I am unable to obtain
of
the work,
any
official,
record
-on-
this
very
accurate
in portant point.
10.
If the settlement in the rubble
mound were in all cazes gradual and
possible to make
uniform it would be possible
in the upper
courses
of the wall for
up
settlement during construction, but it
my opinion be imprudent to that in all cases the settlement.
would in
suppose
will be gradual and me
have occurred.
of
$ Know
from
a o caDIO
uniform, sudden depression. I
cestual experience in other
port
O
53
ports that great settlements often take place suddenly. As having an important bearing,
On
the point at issue, it may prove interesting and instructive if I relate, as briefly
aú
the cases to which I
possible the history of
refer :-
Early in 1871,
5 for
11.
works
after the
the Breakwakers and Quays at
Alexandria (Egypt) were:
·Commenced it
was deemed desirable that I should visit other Mediterranean Ports in which
Harbour-works off a somewhat similar
nature had been, or were
Among these was
on
a
being, constructed.
Trieste. Were a
- a new
port
· large scale was in process of construction. The Quay wall were built of 20 ton concrete blocks, resting
on rubble mounds, carried
water with
out in a considerable depth of water
was
a deep mud bottom below. The result that in
cases the wall settled to such many an extent that the blocks had to be reset, and the wall rebuilt. This involved
&great
loss
of time and mon
money
: and the original
estimated
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