Burlington weekly free press. [volume] (Burlington, Vt.) 1866-1928, 1908-10-01

was treated. Tho cost was 10 cents
n square yard, M which al cents
were for labor. IL cents for tar,
gravel o.s cent, removing sweepings
cent. On the surface IL cubic yards
Of gravel was spread and is cubic
yards Of sweepings were removed.
SPECIAL TAR MIXTURE EXPERT
MENT NO. II
This trial was with n compound Of coal
tar water gas tar. rosin. and other sim
liar substances. the treatment being
made on a section Of road 200 feet In
length and IL feet wide which was rough
and included a sharp curve. The sur
face, however. was comparatively free
from holes. The road was clearly swept
and on this to each square yard was ap-
piled O4o gallon OF the compound, which
was heated to 200 degrees Fahrenheit In
the tar kettle and applied by means Of
hose and well oroomed in by the men.
On this was spread heavy dressing Of
pea stone and then the surface was roll
cd twice, making way that was excel
lent. The road had much the same APP
pearance MS asphalt and It had the ad-
ditonal quality Of being hard and more
than usually resilient and there was no
resistance to the traction Of vehicles. In
the treatment Of this stretch, which In
cluded 267 squa re yards, the cost was 1872
cents n square yard of which the cost
Of labor was A6 cents, compound 20
cents, pea stone IL cents removal of
swecpngs 13 cents, On this work Ave
and half cubic yards OF pea stone was
utilized and two and two-iifths cubic
yards Of swcepings were removed
SPECIAL TAR PREPARATION EX-
PERTINENT NO. H.
This tcst was on n section OF road IS
feet in length and IL feet in width. that
was SO much worn that resurfacing was
decided upon as necessary. This was
done by first tearing up the surface with
steel spikes In the road roller On the
road was then spread q course OF No .
stone and after this had been we'll roll
ed course OF pea stone. for dressing,
was also rolled down smooth and even.
| Because the tar kettles could not be
used without damage to the road the tar
compound was heated to 2lS degrees and
was drawn into coal hods and poured
on the road, no attempt being made to
broom II into the surface But owing to
the manner Of apple cation that road abb
sorbed a large quantity OF the tar and
the amount that was taken UP by the
light top dressing of pea stone was com
parativcly small. The dressing was well
rolled and very good and even surface
was a result The work gave a road
that was one OF the best in appearance
| and was absolutely without dust. 1t was
not possible, however. to secure a sur
| face perfectly even in quality and In the
course of time few rough and porous
places were developed where the tar had
penetrated the road surface and into the
foundation. The cost was decidedly ex-
pensive. the expense being practically
prohibitive. and for a square yard was
as follows Labor l4s cents. tnr COM
pound cents q 5 gallons to the square
yard. stone screenings 80 cents. repair
ing 80 cents mot including the pea
stone. removing sweepings IL cents, a
total Of 3ls cents On the section four
cubic yards OF pea stone was spread and
nine-tenths OF cubic yard OF sweep
ings were removed.
SPECIAL TAR PREPARATION EX-
PERTINENT NO 10.
feet In length and Is feet OF the width
was treated. The surface was rough
but free from holes. In the prepare ion
the macadam was swept clean and on
the surface a rather heavy application
| Of the same mixture used in No. was
applied. This had been heated to ls5
degrees Fahrenheit and from the tar
kettle which was drawn along the road
ray, the tar was drawn by means OF a
hose and distributed very evenly about
the surface On this a heavy covering
Of pea stone was applied and we'll roll
ed. The surface formed WAS admirable.
It being smooth and asphalt-like to the
from dust The one fault was the ten
dency to soften In places and become
sticky in very hot weather for time,
but this was attributed to the exces-
sive quantity of tar used. Not only this
the tar made the road apparently i'm
damage by the rain or storm and only
susceptible to traffic wear. The guam
tity OF tar used was 067 gallon. The
cost was 1871 cents a square yard. which
items were as follows: Labor 5.s cents
tar mixture l cent. pea stone 10 cents
removing sweepings l cent On the to-
tai area OF SIT square yards 1871 cubic
yards Of pea stone was spread and from
1t 7 2-b cubic yards OF sweep!ngs were
removed.