The Chickasha daily express. (Chickasha, Indian Territory [Okla.]) 1899-current, 1910-05-28

Dust passing 40 ...... 340 per cent
Dust passing 10 ...,... lc7 per cent
Above test runs May 18th. 1910
(signed) EARL J MEIER.
City Asphalt Chemist,
With the above three tests on the
wearing surface and the three made
by the Kansas City Testing labora-
tory. | consider any further ones, from
my samples. not necessary, as far as
the wearing surface is concerned
The bindereoating has been made
from limestone rock. quality good and
well coated with asphaltic cement and
IN my opinion in accord with specifi-
cations.
My opinion is that while the speci-
fications give a range Of from 40 to
so degrees penetration, that these
payements would be less liable to
crack, il range of from so to So
was used
The sand grading is good and com
plies with the specifications The
writer found some fine sand on top
Of the pile at the asphalt plant which
the city engineer had condemned and
was being thrown back from the pile,
which should be removed from the
site at once.
Practically no complaint can be
made on either the wearing or binder
coatings.
In the matter Of concrete base. the
thickness Is there. the relative proper
iion Of sand and rock varies consider
able and the amount Of cement used.
Judging from the inspectors reports,
comes within range Of per cent
in most cases
There are some pieces OF crushed
stone, larger than the specifications
recirs. but would not deem these
Objectionable in this wet mixture
method.
or the total Of the 12S blocks in
spected. laid under this contract. / be-
lieye the work has been done in COM
pliance with this contract and speci
fications. with the exception Of the
concrete base on Fourth street from
Idaho avenue to about three-fourths
of block north and on Sixth street
from Dakota avenue to about one
half block north for the reason that
it is not good concrete.
Both Of these streets have been ac-
cepted and final payments made By
the city
The maintenance bond on Fourth |
street having been accepted Novem-
Der 26th 1909, bond No. 2elS4 for
$500.
The maintenance bond on Sixth |
street having been accepted April IA.
1910, bond No, 27225 ~ S9.O02.s7.
These are now on ie with your
city clerk and no doubt recovery can
be had should this work not stand up
during the life Of this maintenance |
which is five years; and if the same |
does not show marked deterioration
inside Of that time. ii no doubt viii |
stand many years longer.
AS to the relative merits Of the |
various kinds OF stone in your con-
crete used, must confess that good |
eoncrete can be made from your red
sandstone, sample Of this used by
the Frisco Railroad company in
scale pit, is now lying about 100 feet
east Of the present track scale east
of the passenger depot, in your city.
would not want to recommend the
use Of this sandstone, in curb or gut
ter and it has not been used IN the
contract.
Your specifications are SO drawn
that they have permitted the use of
the fine sand from the sandstone as
a result Of the crushing, being used
in the concrete and as to whether or
HN0 'HiS NAi hOAu Ine Dlnuer, ana
wearing coat, during the life Of the
maintenance contract, l am under the
opinion It will However, for future
work, would recommend that your
specifications be rewritten so that the
fine sand, resulting from the crushing
Of this stone and any stone SO soft
and friable as to pulverize to sand in
crushing, be eliminated and sharp,
clean, coarse sand used entirely.
In the examination made at the
quarry at Norge found some very
good sandstone and If properly crushed
and screened, would make good con
crete for base, for pavements. This
work has been used in several Of
your buildings and seems to stand the
effects Of the weather first rate.
The crowns for your pavements are
very good and ample provision has
been made for any ordinary rainfall
and | do not believe you Will have