The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-13
Storage Required in Million


~ O41t9s
The reservoir sites must be thoroughly
cleared and prepared, to the end that the
water flowing therefrom shall at all times
be pure and wholesome, and free from
harmful or deleteriouS matter or sub
stance. All trees, dead and fallen timber,
logs, saplings, underbrush. vegetation,
be thoroughly grubbed and removed, and
the whole of the material STACKED and
burned or otherwise disposed OF outside
of the reservoir limits, and the total area
must be raked clear of all refuse, dead
leaves, vegetation and other rubbish. and
thoroughly cleaned and prepared in every
way, and all slopes properly protected, so
as to be fit for the purpose intended be-
fore water is let in the reservoirs.
1t is not hereby intended that healthy
upland sod or soil must be removed, but
the removal of mud or swamp soil con-
tanning decomposing vegetable matter
may be required by the Engineer.
If any artificial lakes or ponds where
the water surface has been extended by
the flooding of adjoining lands. shall be
used as reservoirs. they shall first be
drawn down and their beds properly pre-
pared. in accordance with these speci-
fications, before being put in service, If
the Engineer shall so direct.
There shall be a clear space around the
water-line of the reservoirs, and not less
than sixty feet in width. and additional
space where it may be needed, which is
to be included in the conveyance of the
reservoir sites to the City. This rquire-
ment will not be enforced for the entire
water-line in case Lake Hopatcong or
Greenwood Lake are offered as reservoirs,
provided that the bidder speeches IN ms
bid what portions of the margins of those
lakes he wishes excepted therefrom. and
provided further hat he succeeds IN pre-
venting harmful pollution of the water by
q proper exercise of the powers herein
placed at his disposal. or by other means
HI depth of reservoirs shall in all cases
exceed eight feet below the full water
level throughout seventy-five per cent. OF
the entire area of the reservoir. -t.s
The reservoir dams may be either of
masonry or earth embankments, as may
be best suited to the differentl localities:
They Shall be of sufficient height and
strength, of the best adapted shape, and
built in the most substantial and thorough
manner, on properly prepared foundations,
with the necessary effluent pipes, gate
houses, with gate-chambers and vaults,
gates, valves, screens, and all other APP
~pIiances and appurtenanceS proper for the
purpose intended, with the necessary
slope walls, by-wash, waste-weirs, blow
offs, drains and waste pipes, and they
sha be provided with such sufficient
space or area of land along the foot and
side as may be necessary to protect the
same, and shall be fenced where required.
In case there should not exist a pubic
road, or roads leading to and permitting
access to the reservoirs, where located.
necessary lands and right of way shall
be acquired and furnished to give such
CONDUIT CAPACITY.
The carrying capacity of all riveted steel
conduits will be determined by the kut-
Ter kOr1nuld, ldkiiS liz SO-CllSACht ~
equal .016 ~(sixteen t~housandths): The
smallest interior iamete of the shell as
constructed shall be considered to be the
diameter of the pipe.
The CARRYING capacity of all masonry
conduits or tunnels will be determined by
the Kutter formula, taking the co-effieient
n to equal .Oi4 fourteen t~housandths) for
brick work, concrete or ashlar masonry
lining, and .01S eighteen thousandths) for
rubble lining. All sue masonry tunnels
or conduits shall be capable, of delivering
: l. f,,1lL %.xnrfx~ Ral1nd for NVhnD diCRharC-
ing with a free upper surface, the water
surface not to be higher than one foot
below the top of the arch.
The head to be used for computing the
capacity of the eonduits shall be the diff
ference between the low water level, or
the bottom elevation of the available
the points of intake, and the height or
elevation of delivery at the points of de-
livery designated in these specifications
RIGHT OF WAY.
The RIGHT of way for conduits shall in
no case be less than forty feet in width,
and shall be sufficient to enable the City
pipe or pipes laid therein, and to maintain
and repairNthe same. The right of way
shall extend from the reservoir or reser-
voirs at the point or points OF intake to
the points of delivery. Each n shall
be constructed on one and the same side
thereof throughout, and so as not to oc-
cupy more thereof than IS necessary.
Where the City furnishes right of way
over lands which it now owns, the con-
Quits shalt be laid on that part thereof
designated by the Engineer.
LAYING OF CONDUITS.
The couduits shall be laid in the best
and most thorough manner on true grade
lines on a bed or foundation properly pre-
pared. and where necessary to procure
such foundation. on piling. The curvature
Of the pipe shall in no case be sharper
than ten degrees. Cast iron pipe with
flexible Joints or other devices accept
able to the Engineer may be used at
stream crossings. If steel pipe is used
where the stream exceeds % feet in width.
ii must have a thickness -one-quarter of an
inch greater than that required for the
same pressure elsewhere.
Where pipes are laid in excavation, the
top of the pipe SHAH be covered by at
least three feet of earth. and the pipes
shall be so placed as to bring ali the
longitudinal seams on the upper quarter
of the circumference.
Where the pipe is to be laid across rock,
swamp or meadow, it may be above the
surface of the ground, but must be co..
cred with satisfactory earth. sand or
gravel. so that it shall everywhere have
at least three feet of such covering. In
an such cases, and on all embankments,
the contractor must SOW grass seed, or
sod. or otherwise protect said embank-
ments. Necessary culverts and other con-
structions must be made to secure the
proper drainage of the adjoining land.
ITO be Continued.l