Free trader-journal and Ottawa fair dealer. (Ottawa, Ill.) 1920-1927, 1921-07-30

| gated particles. ! ne size OF III
. coarse aggregate shall be such as
pass two and one-half (2s) inc
round opening and shall range fror
two and one-half t2h) inches dowr
, not more than five per cent passing
, screen having onc.quarter ca inc
: opening In no case shall coarse al
, grcgate containing frost or Jumps O
frozen material be used Crusher ru
stone, bank run gravel or artificial
% prepared mixtures of fine and coaTs
aggregate shall not be used,
{ Par s. The concrete payemen
shall be reinforced with steel mesl
fabric weighing not less than thirty
six (36 pounds per hundred Goo.
square feet The spacing of mali
members of the fabric shall not ex
coed six 90 inches and the spacin9
OF the ties or secondary members Of
the fabric shall not exceed twelve
(2) inches Reinforcing fabric shall
be placed not less than two and one
half (2A) inches below the finished
surface of the pavement. The rein
forcing fabric shall be laid with the
main members perpendicular to the
! center line of the pavement and shall
extend across the full width of pave
ment to within two (2) inches OF tht
| back of curbs and all Joints, but shall
not cross the joints. Adjacent widths
of fabric shall be Tapped not less than
! four (4) inches when the lap is made
perpendicular to the center line OF
the pavement and net less than one
% foot when the lap Is made paral-
lei to the center line of the pavement.
The fabric shall be cut to the length
specified and shall be rolled or other
wise made to lie fiat before being
placed over the surface of the con
crete.
Par. 3. Transverse expansion
joints one-Quarter % inch in width
shall be placed across the pavement
at right angles to the center line OF
the street not more than thirty-six
1861 feet apart, except at street in
tersections, where said joints shall be
on a line with the roadway face OF
the curbs. All expansion joints shall
extend through the entire thickness
of the pavement and all transverse
expansion joints shall extend through
the entire width of the pavement and
the entire thickness and height or
the integral curb, when the latter is
specified In pavement with the in
tegral curb the joints shall be con-
tinuous in a straight line through
pavement and curb. Transverse ex
pansion Joints shall be formed by in
sorting during the construction and
leaving in place the required thick
ness of prepared strips of fiber matriX
and bitumen equal in quality to Elias
tite." manufactured by the Philip
Carey Company, Lockland, Ohio,
which shall extend through the entire
thickness and width of the pavement
and the entire thickness and height
of the integral curb where the latter
is specified. Before the pavement is
opened for traffic the joint filler shall
be cut off to height of one-quarter
90 inch above the surface Of the
pavement.
Par. 10. All forms shall consist OF
two members, the lower member of a
width equal to the thickness OF the
pavement at the edge. and the upper
member of d width equal to the
height Of the integral curb. The
forms shall consist of steel and shall
be straight and free from warp or
short kinks.
Par II. The method of measuring |
for the concrete, including !
water, shall be one which shall in
sure separate and uniform proper
lions at all times. A sack of Port
land cement. ninety-four (94) pounds
net, shall be considered one cube
foot. The ingredients of the COL
crete shall be mixed to the desider |
in a batch mixer OF an
approved typeDand mixing shall con-
tinue until thy cement is uniformly
distributed and the concrete is uni
form in color and homogeneous. Re
that is, remixing with ad-
ditional water, mortar or concrete
that has partially hardened, will not
be permitted.
Par. r. The concrete shall be mix
ed in the proportions of one sack or
Portland cement to two cubic feet u
fine aggregate, and three cubic feet
Oh coarse dBSfeSdte' $50
The material shall be mixed with
sufficient water to produce concrete
Of consistency such that mortar VIII
flush to the surface under light lamp
ing. but the amount of water used
shall not be sufficient to cause sepa-
ration of the coarse aggregate from
the mortar in handling the concrete.
After mixing, the concrete shall be
handled rapidly into place and sue
cessive patches deposited upon the
prepared subgrade, in con-
tinuous operation, completing sec
tions between expansion joints with
out the use of intermediate cross
forms or bulkheads The concrete
shall be struck off for the entire
width OF the pavement from back to
back of integral curbs and brought to
the established grade by means of
lutte"
As soon as possible after the con
crete has been struck off, it shall be
rolled with an approved metal roller.
having a smooth, even surface APP
six (G) feet in length, not
less than eight go inches nor more
than twelve u2) inches in diameter,
and weighing not more than one hun
dred (l00) 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 tho
joint filler at the sane
time The roller shall be provided
with frame to which ropes shall be
ii hAt Cd oil |