Evening star., 1922-03-05
ROAD WORK FILMS
WILL LbEL0ANED

In line with its policy Of informing
the public, especially those who pay
tho taxes. as to the economies that
may be effected in the construction
of highways. as well as the proper
methods Of construction. the United
States government, through the bu-
reau Of public roads, Department of
Agriculture, has just completed for
free distribution and use in motion
picture houses. as we'll as at conven-
tions. chautauquas and educational
conferences throughout the country.
two reels Of pictures showing in de-
tail the construction Of the various
types Of asphalt roads. The pictures
were exhibited for the first time at
the recent American Good Roads Con-
gresS in Chicago.
The pictures were taken last sum-
mer in New York. New Jersey, Penn
sylvania and other states under the
direction of z. J. Wulff, senior high
way engineer. United States bureau
OF public roads and e. J. Kelly Of the
Department of Agriculture. The pic
lures were produced particularly for
the purpose Of showing how the best
results may be obtained in asphalt
construction. They are loaned to re-
sponsible parties free Of charge. ex-
cept Tor transportation costs.
Treating Macadam Pavement.
The first reel. entitled Building
Bituminous Roads," indicates the wide
application Of bituminous materials in
highway construction. 1t shows the
character of the bituminous materials,
and demonstrates the principal labo-
ratory tests used in determining their
suitability for the various types of
roads to <Set various climatic and
traff1c conditions. A portion OF the
reel shows in detail all the various
steps that should be taken in surface
treating a macadam pavement. This
scene opens with a large motor truck
distributor spraying the bituminous
material upon a macadam surface in
the suburbs of Philadelphia, Pa. The
distributor is followed closely by a
horse-drawn wagon spreading the
stone chip covering. The bituminous
macadam pavement Is a type much
superior to plain Or surface-treated
macadam. In its construction the as
phalt is treated and applied either by
mechanical or by hand distributors.
The use of the small hand-pouripg
pots in applying the asphaltic binder
is demonstrated on road near Pitts
burgh, Pa. This demonstration is fol-
lowed by views showing the mechani-
cal distribution of the asphalt by mo-
tor trucks on a project in Westches-
ter county, near New York city. The
trucks are first shown loading at a
railroad Sizing from huge tank cars
They then leave for the road. where
the material is applied under pressure
at the rate of one and one-half gal
Ions to the square yard. Laborers are
pictured covering this material with
stone chips. A powerful roller then
compacts the pavement. The road is
then shown, by the passing Of traffic,
to be ready for immediate use. Ac-
cording to engineers. one of the big
advantages of asphalt pavements Is
that they can be opened to traffic as
soon as constructed.
The second reel, entitled Building
Mixed Asphalt Pavements." shows
methods used in constructing both
asphaltic concrete and the sheet as
phalt types of pavement. This reel
contains views Of plants al Pittsburgh.
Pa, and Columbus, n. j., where the
stone, sand and asphaltic binder are
heated and mixed. The mix" is load