Free trader-journal and Ottawa fair dealer. (Ottawa, Ill.) 1920-1927, 1920-05-29


parallel members Of the fabric shall
not exceed eight inches between sucn
members, and no member making up
the fabric shall have a cross sectional
area of less than $1,000 square inch.
Reinforcing fabric shall not be placed
less than two and one-half (2ls)
inches from the finished surface OF
the pavement. The reinforcement
shall not cross expansion joints and
shall be Tapped sufficiently to develop
the strength of the metal. Said rein.
fOrcement shall extend across the en-.
tire width Of the pavement
Par, 10. That the transverse ex.
pansion joints One-quarter inch in
width shall be placed across the pave
| ment at right angles to the center
! line of the alley and not more than
thirty 500 feet apart, and they shall
extend through the entire thickness
OF the pavement. The expansion
| joints shall be formed by inserting
during the construction and leaving
| in place the required thickness Of
| prepared strips of fiber matrix AMI
| bitumen equal in quality to Elastic"
manufactured by the Philip Carey
! Company, Lockland, Ohio, which shall
extend through the entire thickness
and width Of the pavement All
metal manhole covers and other fixed
objects in the pavement shall be sep
arated from the concrete by joint
filler which shall extend through the
entire thickness of the pavement. Be.
fore the pavement is opened for traf.
fic the joint filler shall be cut off to
a length of one-fourth (A) inch above
the surface of the pavement.
Par. II. That all forms shall be
free from warp and of sufficient
strength to resist springing out OF
shape. The forms shall be well
staked or otherwise held to the es.
tablished lines and grades, and their
upper edges shall conform to the es.
tabished grades. All wooden forms
shall be thoroughly wetted and metal
forms oiled before depositing con.
crete against them. All mortar and
dirt shall be removed from forms
that have been previously used,
Par. II. That the method Of meas.
urlng materials for the concrete, in.
Guiding water, shall be one which
shall insure separate and uniform pro.
portions at all times. A sack of
Portland cement, ninety-four (94)
pounds net, shall be considered one
cubic foot. The ingredients Of the
concrete shall be mixed to the de-
! sired consistency in batch mixer OF
an approved type, and mixing shall
continue until the cement is uni.
formly distributed and the concrete
is uniform in color and homogeneous.
; Re'tempering, that is, re-mixing with
additional water, mortar or concrete
that has partially hardened, will not
be permitted
Par. 49, That the concrete shall be
mixed in the proportions of one sack
OF Portland cement to two cubic feet
OF fine aggregate, and three cubic
feet of coarse aggregate.
The material shall be mixed with
SUFFICIENT water to produce a con.
crete OF consistency such that water
will flush to the surface under light
tamplng, but the amount of water
| used shall not be sufficient to cause
a separation of the coarse aggregate
; from the mortar in handling the con-
{ crete.
J After mixing, the concrete shall be
= handled rapidly into place and sue.
{ cessive patches deposited upon the
d properly prepared subgrade, in a con-
! tinuous operation, completing sec
i tons between expansion joints with
= out the use of intermediate cross
, forms or bulkheads. The concrete
I shall be struck off for the entire
: width of the pavement and brought
. to the established grade by means of
a lutte"
{ AS soon as possible after the con-
; crete has been struck off, it shall be
I rolled with an approved metal roller,
t having a smooth, even surface an.
! proXimately six feet in length, not
less than eight 50 inches nor more
than twelve (12) inches in diameter
and weighing not more than one hun
dred 1O0) pounds. Said roller shall
be divided vertically through the cen.
ter so that a one % inch space is
Left to allow rolling on both sides Of
the projecting joint filler at the same
time. The roller shall be provided
with Il frame, to which ropes shall be
attached on both sides, allowing it to
be pulled across the pavement
The roller shall be operated at such
an angle with the center line of the
pavement that it advances along tho
, Pavement about two ca feet for each
tiluh dCIoSS. Inc TOllGF snail pass
, from one edge of the pavement to the
other, and at transverse joints shall
be set over the projecting jont-tiller
so thatrolling may be done on both
sides Of the joint at the same time
: and without interfering with the pc.
F., Sition Of the joint-tller. After the
: roller has covered a given area in the
manner described, the same area
shall be similarly covered by tho
roller for not less than three (3l
times at intervals of from fifteen U5)
to forty (40) minutes, depending on
% weather conditions and as many
times additional as may be necessary
to remove excess water.
After the rolling has been com.
pleted the pavement shall be finished
by two applications of belt made
, Of canvas, not less than six (6) inches
, wide and not less than two t2) feet
, longer than the width of the pave.
= ment. The belt shall be applied with
a combined Crosswise and Longitude,
y nal motion. For the first application
vigorous strokes at least twelve
inches long shall be used, and the
= longitudinal movement of the belt