62
753
wash and otherwise due
precaution
in still water at Low Tides.
ark... back
will be taken to deposit the concrete
Where
there
three feet of water in the trench it will be lowered. boxes with moveable, bottoms, as was done with success in the deeper foun the ashlar and concrete pur of
1875 opposite the
Central
dations.
bult in
Market
Masonry
The concreter being finished at how water and having set hard,
it is
is proposed to raise upon it. nine inches back from the face,
the
JAL (S
ashlar
masoury
to be baid
header and stretches in Flemish
bond with a
The stone will be
butter of
in 12.
sound close.
:
grained: gruz granite pee from discolor
grey ation or other marks of disintegration. The courses will be from two feits to foot three inches thick, bricking
tve...
so that each header shall pests
coint so
joint
about the middle of a stretcher off
the
course below.
The stones will be
squared, ands rough dressed to plane surfaces with shoup arrises and mißem form bed and side joints. Their faces will be fine dressed but the lails of headers
and the backs
where
of
the
they
a but
inner stretchers.
inst the concreto
against
backing will be left: rough. The foot-
ing courses resting
will be of
the concrite
headers 5 fut le inches
long and not less than 2 fut le inches wide in their external faces,
they
will project to inches beyond the
grained