Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1915-12-09

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Practically nothing has been ex-
pended for repairs in over 20 years"
The following is taken from report
of Frank E. Rodgers. state highway
commissioner of Michigan, read be-
fore the good roads congress held De-
cember IL, 1913, at Detroit:
Concrete can no longer be regard
ed as IN the experimental stage. 1t
has long been accepted as the most
suitable material for the foundation of
pavements for city streets, no matter
what material Is used for the wearing
surface. The last FIVE years has seen
an immense yardage of concrete pave
ments laid in the cities and towns of
the country, and. rather large mile
age laid on country highways
Michigan, wisconsin, Illinois aud
Iowa are the states which seem to
have been most active in this work."
Taken from the report of Clarence
e. Bayley, city engineer of Pomona,
read before the: League of California
Municipalities Convention, 1913:
BEST and Cheapest
Having had several years expert
ence in road building, have, from a
process Of elimination, concentrated
my thought and efforts toward the
perfection and adoption of a form of
Portland cement concrete road of a
thickness :. commensurate with the
needs of traffic. surfaced with a dress
ing Of asphaltum, oil and rock screen
ings of from Ia inch to 3-S inch in
thickness as being at once the best,
and cheapest pavement available.
Best because of speed and econ
omy In construction, and early avail
ability, and because It tends to minim-
ize If not wholly eliminate friction in
the foundation, thereby enabling larg-
reason greater ease in pleasure We
hicles.
The mixture of concrete should be
a 1;2:4, mixed in a thickness of not
less than four inches, and advancing
in depth of structure as the traffic of
a given street requires
Taken from report of DIR. E. H.
dean of the engineering
school of the University of Oregon,
1913:
'Macadam pavement is rapidly fall
ing in disfavor all oaer the country.
The state Of New York has spent $685..
100000 upon nlacadam roads, but
few months ago, In popular election.
$50 COO, 900 was voted which will be
used in tearing up the macadam roads
and replacing with concrete. A curl
Gus fact is that macadam roads were
factors which made possible the adop-
ton of power traction, including
tr,,olc .opl oufny,arhiloO ~ fha o1,,p
try; and 1t is now the mechanical
agents which are tear
Ing macadam to pieces and necessitat-
ing heavier type of road construc-
ton.
Four Inches Ample.
This is eventually to be concrete.
Four inches of concrete will stand
greater strength than six inches Of
On an average, where traf
fic is not unusually congested, four
inches of concrete is sufficient
'sTakenN from report of Austin B.
Fletcher, state highway commissioners
Of California:
"'For a large portion of the roads
the commission has adopted a pave
ment consisting of a Portland cement
base of a minimum thickness of four
inches and Is feet wide, with should
ers at least three feet wide on each
side OF the concrete. The concrete
base is covered with thin coating of
asphaltic oil and stone screenings,
forming bituminousa carpet from S-S
to IL inch in thickness to serve as a /
wearing surface and to protect the
concrete. T. -
In the environs> Of San Francisco
thicker base wearing surfaces are spe'
Gifted and running from Is to 25 feet
in width. s:s = stf
Roads under contract August 1,
1913: ..... -. .~...
..: g.. Coct Coct