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

tons. II the earth Is too hard to re
ceive compression through the weigh
of the roller, it should be loosene'
with pick and hauled away. An.
depressions below subgrade caused b,
the roller shall be He'd With solecte,
! materials and then rolled to the tru,
/ srade. All subgradc when finished I,
! be six 60 inches below the surtac,
Of the finished pavement Earth it
embankmcnt. or below subgrade. shall
/ be applied in layers not exceeding
one % foot in thickness and every
layer thoroughly rolled and in hot
excavations and embankmen' the sub
grade must be of a uniform density
Par. 3. Upon the subgradc. com
pacted. surfaced and otherwise pre-
pared as herein specified, and immc.
diately after sprinkling said sUbErade
with water there shall be construct cd
Il concrete pavement, the surface OF
which Shal' conform To the grades a.
herein specified. said pavement shall
be laid in one course with an inter
vening layer of woven wire metal re
inforCing
Par. ( That the cement shall
meet the requirements OF the stand,
ard specifications for POr. land &c
ment adopted by the American So
Ciety for Testing Materials. August
18th, 1909, with all subsequent amend.
ments and additions thereto, adopted
by said society Said cement shall be.
delivered in original packages hayinG
the manufacturer name thereon
Said packages shall weigh not less
than ~ pounds, and four packages
should be equivalent to one barrel
or four cubic feet.
Par. ., That the fine aggregate
Mould consist OF sand or screenings
from hard durable gravel graded |
from fine to coarse With coarse par
'icles predominating, and passing |
when dry a screen having one-fourth /
~ inch openings. 1t shall be clean. +
lard, free from dust soft particles.
Dam. vegetable or other delerterious
natter, and not more than five per-
'ent shall pass screen sieve having
me hundred mesheS per lineal inch
line aggregate shall be OF such quail
Y that mortar composed of one part
cortland cement and three parts fine
ggregate, by weight. when made into
DriQuettes shall show tensile
trength at least equal to the strength
II l.3 mortar OF the same consist
nCy made with the same cement and
tandard Ottawa sand In no case
hall tine aggregate containing frost
II Jumps of frozen material be useG.
Par 8, That the coarse aggregate
hall consist of clean, hard. durable
rayel, graded in size, free from dust
Dam. vegetable or other deleteriCusi
natter, and shall contain no soft. Aat
+ elongated particles. The size OF
he coarse aggregate shall be such as
0 pass tHo and One-half t21a) inch
ound opening and shall range from /
wo and one-half t2i2) down, not more I
han five per cent passing q screen (
aying one-tourth "a inch open
ne. In no case shall coarse aggre
ate containing frost or Jumps oil +
rozen material be used
Par. l. That crusher run stone. /
ank run gravel or artificial prepared !
Fixtures Of fine and coarse aggregate
hall not be Used.
Par. S, That the water shall be {
lean. free from oil, acid. alkali or
esetable matter.
Par. 9. That the pavement shall be
enforced with a mesh steel rein. =,
orcing fabric which shall have a
ross sectional area Of not less than
,l0oO square inch lineal foot of pave
nent length computing main tension
members only; the spacing Of parallel
members of the fabric shall not ex- ,
eed eight inches between such mem.
'ers. and no member making M the
a0ric shall have ii cross sectional ,
rea Of less than $1,000 square inch.
reinforcing fabric shall not be placed
ess than two and one half t2La) ,
nches from the finished surface of
he pavement The Reinforcement
nall no. cross expansion joints an q -,
hall be Tapped sufficiently to develop ,
he strength of the metal. Said re- ;
shall extend across the ',
nitro width Of the pavement.
Par. 10. That thc transverse ez- ,
anSiOn joints one-quarter inch in .
'tdth shall be placed across the pave /
1ent at right angles to the center ,
me OF the alley and not more than
hlrty 500 feet apart, and they shall ,
&tend through the entire thickness |
I the pavement, The expansion Z
Dints shall he formed by inserting
urlng the construction and leaving /
q place the required thickness Of ]
repaired strips OF fiber matrix ana {
ltumen equai in quality to Elastic. !
manufactured by the Philip Cares (
omrany, LoCkland, Ohio, which shall ;
Xfend through the entire thickness {
nd width of the pavement. All metal I
ldnhOle covers and other fixed oh.
acts in me pavement shall be sepa- /
ated from the concrete by joint filler !
'hlch shall extend through the en-
Ire thickness of the pavement. Be
ore the pavement is opened for trai-
c the Joint filler shall be cut off to|
height of One-fOurth 90 inch above
ne surface of the pavement.
Par, II. That all forms shall be
rec from warp and of sunicient
trength to resist sprineing out Of
hape, The forms shall be well
taxed or otherwise held to the es-
iblished liens and grades, and their
pper edges shall conform to the cs-
ablished grades. All wooden forms
hall be thoroughly wetted and metal
orms DIED before dcpositing con
rete against them. All mortar and
irt shall be removed from forms tina;
ave been previously used.