Baxter Springs news., 1918-02-01
RESULTS OF FAIR TRIAL IN
MINING SECTION OF
MINNESOTA
HOW ROAD WAS BUILT
Third of Series of Articles
Printed by Daily Citizen
for Information Of Bax-
ter People

have an excessive crown, making Il
necessary to regrade to bring II to the
proper surface and width. In most
cases this can be done by loosening UP
the crown by lightly scarifying and
pulling the material to the sides, ther
thoroughly rolling the entire road
way. 1t is often necessary to throw
up shoulders of earth from the shd1
of the road to protect and confine the
stone on the roadway while being
treated. After the wearing surface is
complete the shoulder should be sub
stantial and sufficient to protect and
drain the road.
A typical method of construction is
described in the work of putting on
2Is-inch asphalt macadam wearing
surface by the commissioners Of
Balkan township, on the road between
Chisholm and Hibbing, MINI.
The 1S-foot roadway Of water
bonded stone had crown Of from B
to 10 inches. This crown was cut
down to 21a inches, the center being
pulled to one side with q light two
horse road grader. The roadway was
then lined up and earth shoulders
thrown up from the material secured
alongside Of the roadway. The 1S-
foot roadway was then thoroughly
rolled with a lotion roller, care be-
ing taken not to roll the shoulder.
After the first rolling all low spots
were brought to grade with crushed
stone and any high spots were cut off
and placed on the shoulder or In low
spots. The roadway was then ready
for spreading the pouring stone.
Before any work was done on the
road, all the crushed stone required in
the construction of the wearing sur
face was delivered at the sides Of the
road, being placed in piles certain dis
tances apart. Three sizes Of stone
were used, the pouring stone or first
course being sized from 2h to / inch
and delivered and spread on the road
way at the rate of 16 square yards to
the cubic yard. The key stone was
sized from * to u inch, and delivered
and spread on the roadway at the
rate of GO square yards to the cubic
yard. The top dressing stone chips
sized from Y to Y inch, and deliver
ed and spread over the surface Of the
roadway at the rate of 70 square
yards to the cubic yard.
After the roadway was prepared
The pouring stone was spread by men
with shovels over the exact area from
the cubic yard piles along the side
of the road. One man with a rake
kept the stone to proper grade. The
stone was then firmly set in place
with O lotion roller, care being taken
not to roll too much, as excessive rOl-
ling packs stone, and also breaks it,
which is to be avoided.
After the pouring stone was rolled
it was gone over and any depressiOns
or high spots brought to the correct
surface. The crown was also checked
up and kept to as near 2h to 8 inches
as possible.
The first application of Stanolind
having asphalt &C" was then made at
the rate of ~ gallons to the square
yard, and at a temperature Of 300 de-
grees Fahrenheit under 45 pounds OF
pressure.
The application of the asphalt was
Immediately followed up with the key
stone, which was spread from the
piles at the side of the road, / uNic
yard covering approximately 6Osquare
yards, just enough being spread to fill
the voids in the treated pouring stone
AS the men are spreading the stone
one man follows up with q brush
broom, brooms the stone as uniform
ly as possible. This work is kept up
as close to the pressure distributor as
possible. When the distributor is
empty it is turned around and pulled
back over the key stone by the roller,
which also pulls it on the road and
furnishes the steam to run the air
compressor. The roller pulls the tank
wagon onto the completed work, at
which place the auto truck bitches to
it and goes after another load.
While the tank is after the load the
rolled thoroughly rolls in the key
stone, and when the tank wagon re-
turns, the portion on which the first
application of asphalt and key stone
has been placed is then treated with
second application Of StanOlind at
the rate of Y gallon to the square
yard, and Immediately followed by
spreading the stone chips or top drss-
sing, which is brOOmsd to ; uniform