Eastern Entrance to the basin.
8. The supply of granite from the quarries is unlimited. The face of the latter will be only 700 feet distant from the work. The quality of the stone is excellent and blocks of large size are readily obtainable.
The Government plant available, without detriment to the Praya Sea-wall and other Public works, however, is limited to the necessary railway, an eight-ton derrick crane, as also picks, shovels, and quarrying tools. Another crane and 20 tip waggons will therefore be required, in addition to the necessary timber for the quarry.
It is proposed to do all the unskilled work by convict labour, should the Governor allow it.
9. It is proposed to place the larger sized stones on the external face of the breakwater, throwing the smaller ones into the centre. The outer slope facing the sea will be at an angle of one and a half to one, the inner one being ... to one. The stones forming the upper layers and the top surface of the breakwater will be of the largest possible sizes, not loosely thrown out but carefully selected in situ and well packed in. The sea-bottom is a hard and compact sand into which the stones cannot sink.
Page 357
Eastern Entrance to the basin.
8. The supply of granite from the quarries is unlimited . The face of the latter will be only 700 feet distant from the work. The quality of the stone is excellent and blocks of mus Size
ore re
readily obtainable.
The Goverment plant available. without detriment to the Praya Sea --
wall and other Public works however
is limited to the necessary sailway
Eigth ton derrick
frow and to au
crane as also picks, shovels and . quarrys
tools. Another crous and.
20 tips waggons will therefore be required.
in addition to the were
for
the
quantree.
necessary
timber
It is proposed
357
to do all the unskilled work bes convict labour should this Eveetlevey the Governor allow it.
9. It is proposed to place the larger sized stones on the External face of the breakwater khrowing the
Emaller ones unto the centre. The outer
stope fricing the sea will be at an- angle of
one and a half to one,
imer one
hay
the
be a
h
to one.
The
stones forming the topper layers
ምህ
the top surface of the breakwater will be of the largest possible sizes not loosely thrown out but carefully selicted
in Eitu. The sea-
and well packed inn
bottom is a
hard and compach zond
wito which the Stones cannot sink,
fo
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