The Sewerage of Sea Coast Towns

Henry C. Adams

Capitolo 89

                20 to 45 minutes - 5 7
                3/4 to 1-1/2 now - 10 12
                1-1/2 to 3 hours 5 15 22
                More than 3 hours 10 20 32


When preparing himself/herself/itself to climb the diver has to tighten the valve of air
in his/her helmet to increase his/her buoyancy;  if the valve is closed
too much to allow the air of excess to escape, his/her wish of ascent to
before is gradual, but the pressure of the water reduces, the
you air in the suit it expands, while doing him/it so rigid that he is not able
you transport his/her arm to reach the valve, and he is blown on, with
the speed never-in increase, to the surface. While ascending him
you/he/she should freely practice his/her muscles during the period to wait
to every place of arrest, as to increase the circulation, and
accordingly the percentage of the deceleration.

During the progress of the jobs the location of the sea
clearly outfalls will be suitable from provisional characteristics visible
from day and had been illuminating for night;  but when it completed his/her position
it has to be marked in a permanent way. The extreme end of the
outfall should be suitable from a boa of can similar to the shown one
in Fig tree. 33, served as the Mr. Brown, Lenox and Co.  (Limited),
Milwall, London, E. what a coast on included L75 a 20 cwt.
lead and 10 fathoms of chain, and it is approved for the purpose
from the Department of Commerce.

[The illustration: Fig tree 33 can Provide of boas to Mark Sewer of OUTFALL.]

It is not desirable to assure the chain to any part of the
outfall instead of using a lead, because to low water the
you loosen some chain you/he/she can be entangled, what preventing
the boa to be risen with the tide, will conduct to damage;  but a
special pole can be driven for the purpose to assure the
provides of boas, to such distance from the result that the wish of chain
not ugly it. The boa should be painted with alternate vertical
strips of yellow and "Stapler green, and lettered Outfall" in
letters 12 white in deep.

It is had to remember that it is necessary for the plans and
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