The Winslow mail., 1910-08-27

lon per square yard, spreading same
evenly over the entire surface of the
roadway, and cultivate the oil in
thoroughly, with a cnltivator set SO AS
not to disturb the snb- base. Then tamp
with the Tamping Roller until the sur
! face is uniformly hard and smooth
without any irregularities. After each
OF the first two applications of oil, all
the roadway shall be cultivated not
less than four times and after the third
applications not less than five times,
and in all cases until the oil and soil
are thoroughly mixed.
Then apply the fourth coat OF oil
amounting to one fourth of one gallon
per square yard. Then spread sufficient
coarse sand or rock screenings to alb
sorb all free OIL
Wherever, upon any street or alley,
any cement sidewalks, cement cutters,
cuiverts or any paving renders any
machine work impractible, then the
same shall be done by hand work
under the direction of the Engineer.
The Contractor shall be held re-
sponsible for all damage done to curbs,
cutters, cross-walks, fumes, etc, dur
ing the progress of the work.
The oil used shall be petroleum, and
shall conform to the following require
ments:
(a) Gravity. The oil, after being freed
from water and sediment, shall be of a
gravity not higher than IA degrees
Beanme; at temperature of sixty de-
grees Fahrenheit.
(b) Temperature. All oil must be
delivered at the point required for
sprinkling at Temperature of not less
then one hundred and fifty G5O)
degrees Fahrenheit.
(c) Measurment. In determining the
quantity of oil delivered the correction
for expansion by heat shall be as fol-
lows: From the measured volume of
oil received at any temperature above
sixty (60) degrees Fahrenheit, an
amount equivalent to four tenths
(4-lO) of one (1) per- cent for every ten
(10) degrees Fahrenheit shall be sub
tracted as the correction for the eX-
pansion by heat. For the purpose of
! measuring oil, temperature of sixty
(6O) degrees ! Fahrenheit shal! be
deemed normal temperature.
(d) Volatility. The oil shall not con-
tain more than ten (10) per cent of
matter volatile when said oil is heated
slowly to two hundred and twenty
! (220) degrees Fahrenheit and main
tanned at that temperature during
fifteen (15j minutes.
(e) Asphalt. The oil shall contain
not less than seventy (70) per cent OF
asphalt, having, at temperature of
seventy y-seven [77l degrees Fahrenheit,
a penetration of eighty 1901 degrees,
District of Columbia Standard. The
percentage of asphaltum shall be deter
mined, using oil as described in section
d in the following manner: A weighed
amount of said treated oil shall be
heated in an evaporating oven to
temperature of four hundred r40Ol de-
grees Fahrenheit until it has reached
the proper consistency, when the
weight of the residue shall be deter
mined and the percent calculated.
IF Water Sediment Deductions
will be made for water and sediment
in exact proportion to the percentage
of water and sediment found therein,
and the oil shall not contain over two
as determined by the gasoline test.
All tests to be made under the
method adopted by the City of Los
Angeles.
The accuracy of tank wagons used
in the delivery of the oil for this work
shall be verified by the Engineer, and
each wagon shall bear a number and
its correct capacity marked thereon.
The WORK shall be done under the
supervision of the Engineer, and be
subject to the approval of the Owner.
! Wherever the word "Contractor" is
used In these specifications it refers to
the party or parties of the second part
in the agreement for the construction
of the work herein specified.
The Contractor shall indemnify and
save harmless the Owner, from suits
and actions of every name and descrip-
tion brought against him for or on ac-
count of any damages received or sus-
tanned by any party or parties, by or
from any of the acts of, or anything
done by the said Contractor. his SER
wants or agents, in the prosecution of
said work.