The Chickasha daily express. (Chickasha, Indian Territory [Okla.]) 1899-current, 1910-01-17
Colby and DeBarr Clash
Over Paving Material
CONTINUED from Page p

ob,alned from Minnesota avenue, ives.
OF sixth street and east oF the alley
On December 10 my reports show
there was six blocks laid west OF
Sixth street on Minnesota. two sam
Piles we're taken from loads No.
and No. 5. Analysts shows the former
contained 1913 per cent OF bitumen
and the latter Ils per cent. On De.
ccmber 10 the reports show two sam
r,es we're taken between that point
and he alley with the following re
snits: Load NO 3, per cent Of bliu-
men 1915; load so 10, par cert q
biumen 1913. OF 230 samples analy'
sis shows the smallest per cent cf BIZ
utmen obtained as 90 ann only 81
samples showing less than 100 peF
cent. A fair example showing the
range OF bitumen on the q days when
tho per cent was below 100 is the
following report OF work on Fourth
street. between Oregon and Dakota
avenue, on September .: Number Of
ioads laid, Al; asphaltic cement Ga, e.
from three kettles. penetration SO. 40
and As. respectively; samples taken
from loads No. 3, 20, 2S and 5S per
cent OF bitumen. 1914, 9.2. 1863 and
1913 respectively. If any citizen de-
sires we will permit a cut to be made
at any point on any street. divide the
samples, sending one-half to Doctor
DeBarr and the other half to the city
chemist at Kansas City, st. Louis,
Chicago or to Prof. Dow, Richardson
Of j. w. Howard. consulting engineer
Of payements, New York, and If the
analysis from any Of the latter gen.
tlemen does not show more than 80
per cent OF bltumen and on a number
Of samples an average Of 1910 10 lO.5
I will pay for the analysis.
"The lack Of value TO this office in
the report as published Is in nol
Identifying the samples with location
anc use In the work and at other
points. stating conclusions without
reference 10 the specifications or the
facts, for example. with reference te
sand screenings he Identifies his sam
pies only as Nos. /, 2 and 3, saying
NO 3 is the only sand suitable for the
making of the curb and gutter. The
sand that is being used for curb ane
gutter and also for the general pur
poses in the pavement work are Nos
2 and /. These sands contain from
1.S2 per cent to 3.23 per cent Of clay
and loam and in some cases ever
more than that. In its present dirty
condition II is unfit for either TOT
surface mixture or for the foundation
or for curb and gutter Where die
he obtain his information concerning
sand Or other material used In curl
and cutters? The facts are that the
curb and gutter was completed nearly
Two months prior to his visit and thai
the sand described in No. 3 was usec
IN nearly all curb and cutters. onl,
enough fine sand being used to III
the yoids. Again does he condemn
tho sand on account OF anything II
the specifications, or or his theory o
what Is suitable sand for concrete
work? If confining himself to figures
as shown by analysis, why give mini
mum OF 1882 and a maximum OF 3.2'
nor cent OF clay or loan and throw IL
and in some cases even more thar
that why not give the figures fol
meme than that or say he was guess
ing II not condemning the sands ,.
tesr under the specifications but as Z
his opinion Of what they should be TO
various classes OF work. let him dual
IN BY showing how much pavement o
coi.crete has been laid under his d
rection or supervision and have Inn
make the specifications. Not all SAN
found on the line OF the work goe
sntc the work and when it becomes
4 question OF opinion that is Away
omen 10 debate as instanced by TN
latest Y. S. specifications for concret'
pire, under pressure varying from
to 60 feet head of water, which fol
lows. The sand shall be composed Q
hard, durable PARTICLES, and must no
contain more than 10 per cent Of clay
1 All shall be Of a size that shall pas
screen with a clear one-quarter Incl
mesh and be so graded that the void
in the dry well.shaken material shal
not exceed 80 per cent Of the mass
Municipal Engineer. Jan, 1910, Sue
dirty condition should not be toleI
ated.
Again he says: The asphalt mis-
ture In the surface shows a penetra
lion too high by a slight amount
Wtv does he not give the figures TO
comparison with the specifications? Q