Henry C. Adams

Capitolo 72

case to Waterloo, because they has to absolutely be true to flank
and it levels, otherwise the pipes cannot be staid in the cribs.
The method to mend these poles is described by the Mr. Well
Howarth (minutes of Procedures of Inst.C.E., Vol. CLXXV.) as
it follows:--"The pole was vertically thrown in position by a
quadruped derrick, two legs of what on every side of the was
trench;  a small capstan tied to a pair of the legs lifted
and I bend the pole through a block and equipment. When the pole
it was ready to be sunk, a 2 in iron pipe the centre was left down,
and it joined to a strength-pomp from he/she wants to say of a rubber pipe;  a jet of water
it was down then forced this pipe, while driving the sand and it covers with sand away
from under the pole. The pole was rotated back then and
before on a quarter of a turn, from men that they throw on the arm;
the pole, clearly sank from its his/her own weight the water-jet,
driving the sand on through the centre cable and in the
trench, and it was kept for a long time vertical from the slingshot the
derrick. The pole didn't hardly work to its end level the earth
you/he/she was filled in round the arm, and in this sand in march the pole
perfectly become fast and immovable some minutes after the
sinking was completed. The whole trial, from the first one
throwing some pole to the final setting, doesn't take anymore
what 20 or 25 minutes."

[The illustration: the Flat V.

STONE READ. Fig tree. 26--Maritime ABERDEEN OUTFALL. Fig tree. 27--small Great
MARITIME CROSBY OUTFALL. Fig tree. 29--pipe of the Iron of the throw On Thrown Steel And
CARRIERS. Fig tree. 31--WATERLOO (LIVERPOOL) OUTFALL Marittimo.]

(_To faces page 80_.)

Poles of life can be used if earth is appropriate, but, if it
it is clay of pebble or material similar, the better wish of results
is probably gotten assuming steel joists rolled as poles.




I CAPITULATE XI.

THE ACTION OF MARITIME WATER ON CEMENT.


Questions are frequently mails in connection with sea-coast
you work as to if some deleterious effect will result from
sea-water that uses to mix the concrete or to use sand and