The Morris County chronicle. [volume] (Morristown, N.J.) 1877-1915, 1908-02-11

streets of large cities but for small
towns they are likely eventually to get
out of repair and remain so for long
periods of time, because of the lack of
facilities for making repairs promptly
BITULITHIC PAVEMENT
Is a form of bituminouS pavement
made with special mixtures, prepared
by special machinery. Bitulithic prac-
tically consists in foundation of
either concrete or crushed stone &C.
mented with a bituminouS cement.
Its wearing surface is a very dense
mixture of graded, comminuted,
crushed stone, ETC., mixed with a
bituminous cement. This is a success
full form of pavement which is dura-
BILE, dense, Slightly elastic and not Slip
perry. 1t is suited to many streets and
will sustain business traffic while at
the same time it permits pleasure car
riages and automobiles to travel at
fast speeds without slipping.
TAR AND OIL MACADAMs
Are practically mixtures OF ordinary
macadam stone with tar or oil in the
mass or on the surface. They are
crude substitutes for denser and more
durable pavements. They soon be-
come uneven and unattractive, but are
useful on some suburban roads, etc.
PORTLAND CEMENT CONCRETE PAVE
MENTS
For roadways have been tried in sew
eral places. They are wrong in prin-
ciple and a failure in practice. They
are not elastic but rigid and brittle.
The shock of hoofs and wheels loosen
the stones from the concrete, and
grind the cement and finer particles
to powder. Wet, dry, hot and cold
weather cause cracks. Concrete is
suited to sidewalks under foot travel
but not to roadways subject to horse
and vehicle use.
WOOD BLOCK PAYMENTS
Are of two general, classes those of
round cedar or other blocks formerly
used in few western cities as tenn
porary pavement, and the carefully cut
and creoSoted or otherwise treated
blocks of long leafyelloW pine or other
suitable wood, laid on concrete fOun-
dations. Wood block pavements re-
Quire great care in their construction
and greater care for constant main
tenance. If neglected they become
an impeachment to travel because of
holes and menace to health because
of the Zymotic germs of Infectious and
contagious diseases they foster and
distribute. Wood pavements are a
luxury for a few wealth lined streets
of large cities where quiet, smooth
pavement is desired without regard to
cost of construction and constant re-
pair.
GENERAL SUGGESTIONS.
/ will close by suggesting that no one
kind of pavement is suited to all cities
and to all streets. Each street or
group of streets should have the kind
of pavement available and best suited
toit. A study of the relative location,
traffic, present and prospective uses of
street indicates to an experienced
street engineer, the kind Of pavement
to use on that street.
There are three periods in the his
tory of paving city. First, ignorance
and apathy second, empiricism or
rule of habit combined with cOnserva-
tism third, the use of scientific means
and methods combined with expert
ence of other cities.
The paving pT0Olem presents three
questions First, shall the policy be
to reduce first cost and neglect SubSe-
quent expenses? Second, shall we
seek durability only and neglect all
other important items and matters
connected with or affected by pave
ments Third, shall the policy not
rather be to consider not only the first
cost but also the cost of repairs, re-
newals, cleaning, sprinkling, and to
give due regard to the private expenses
Of citizens arising from the cost Of
traction, also to provide for the con
.venience, comfort and health Of the
people
PRELIMINARY STEPS NEEDED.
Finally permit me to suggest that
your city, like others, can best take
the following preliminary steps before