Daily capital journal. (Salem, Oregon) 1903-1919, 1904-03-08

Ill
been placed in one layer Of about one
foot thick. and then rolled. 1t shoulc
he rolled in layers Of not to exceed ive
inches each. and be finished with a
thin layer Of screenings of crushed
rock.
"To roll a layer of stones one foot
thick. the top stones will bind before
the bottom ones will settle much
When the heavy traffic comes upon
the finished road, the lower stones will
gradually settle and leave holes In
the road.
Secondly. unless the stone is thor.
oughly packed upon the bottom, the
water will percolate through the road,
from the bottom, during the wet sea
son of the year, and soften the foun'
dation. and cause it to settle. One of
the main objects in Macadam street
or road is to keep the foundation dry,
and the surface of the road should be
kept smooth. Unless that be done
the roadbed will give way, and the
road will become full of holes, and the
chugglng of the wheels Of the vehicles
will soon destroy it.
/ 81 was informed by several men who
have had a great deal of experience
in making Macadam roads, that an in
ferior grade of stone might be used
for the bottom layer of the road. That
a softer stone and hard one would
unite better than stone that is all
hard. For a surface layer, the stone
should be very hard and tough.
TOO much care cannot be given tc
the selection of the stones for the TOP
or wearing surface of your road. Care
should be used to select a stone that
will not easily disintegrate when ex-
posed to the elements.
Il believe that suitable stone for
the bottom layer can be had by crush
ing the boulders at the mouth of Mill
creek, where 1t empties into the VIII,
lamette river. The expense of crush
ing and placing the crushed material
upon the ground would be very little,
in comparison to going elsewhere for
the material A pavement made en-.
tirely Of them might be very durable,
but | am afraid they would be too
brittle for the wearing surface of the
road. There is another thing in ia.
vor of making Macadam pavement,
That is, all of the work can be done
right here, where our laboring men
and merchants can get the benefit of
it.
"Our people will do the work and
spend the money received for their
labor right here in our town. by pay.
ing their rent, and in the purchase of
the necessaries aud comforts of life.
IF we put down asphalt, brick or
Belgian block pavements, the materl.
al will have to be purchased else.
where, and our citizens will not get
the benefit Of the money that shall be
expended for 1t.
About the only feature | see about
making Macadam pavements, is how
to keep ii clean. If they be swept by
sweeper commonly in use, the dust
or binding material that shall be put
on for a top dressing will, am afraid
be gradually swept away, so the cor.
ners Of the stone will become ex.
posed. made, however, especial in.
quiry as to the various kinds of
sWeepers now In use for cleaning
pavements, and found that the
American Road Roller Company. of
Groton, New York, have endeavored
to solve this problem, and have con.
structed a sweeper that, they claim
obviates this difficulty, and meets ali
requirements
1t does not look to me, like il would
meet the requirements, but, not having
seen it work, l am not prepared to say
whether it will do so or not.
Il can give you the names of men
who can give you full details about
Macadam pavement, If you care to
write to them relative to the matter
! Mr., Thielsen was next called upon
He spoke Of some good gravel roads
but considered them all of a tempor
AIRY character For Court street he
stated, his preference was for a Ma.
eadam street.
! Mr. Albert spoke eloQuently or
crushed rock paving, such as has been
put down on the Liberty road.
j. II. McNary showed that whereas
the people OF any one street might he
ready to bear the expense of a Ma.
caaam pavement, the city ought To he
Wiling to furnish rock crusher and