129.
/73
115
Engineers
and by the indiscriminate
of sands
native mortaro
打趴
A x
ingredient with
the part of my
professionals countrymen, totally po
gardless of the chemisting of ma-
terials.
The line conerites pecommended; to the favourable notice of Sir John Cooder are cutainly not held out
very highs order but are
A J
A v
of
suggested.
amply strong and cheap
forms of backing for the Tanga wall
and as a
very fairly goods
A
terial for covering posed to such seas
likely
get here ..
roadway
lat
we
Its cost laid down, relatively to
That
of
to to 1
Portland
and Cement
crete,
is as
2
to 5. 35, and to
that
сам
that
of.
2 to
7
26-
1 Portland cement as
14
saring which titles it to the best consideration.
For submarine foundations
in the case of the Praga Wall it will not be available apart from its other short comings owing to its extremely slow setting properties.
is
Mortars.
be
ansl
The Hydraulic morlar to
d in the
recomm
setting off
cended to
the
masonry
be I part fresh-
- by burnt stone time to I part of
ferruginous clay.
for
The se
proportions
have already been fully tried here
che lust eighteen
are found
energetic bydraulic mortar
case the mortar
inwards from the edges of
months and
d to
yield
4.....
very fairly
every
for
three inches
the
sinves
**M