Essex County herald. [volume] (Guildhall, Vt.) 1873-1964, 1900-11-02
TAR MAcA0Aa PAVEMENT.
cheap and Durable Even when
Used For Heavy Tragac.

U-ed For Heavy TraGae.
Clitei States Consul F. u Shepard
az Hamilton. ont. says;
after years OF experiment this city
is laying pavement that fIr excel.
lence durability and cheapness Is cum
meuded for examination 20 those 10
charge Of similar work n the Cnited
Saues. The possibility OF making good
roa Is AZ reasonable cost has been dem
onsuated. aud tests extending over 4
number az yeIrs on business streets
prove thar farreI marIlam makes not
only a smooth and solid roadway. but
one tLat can De Kept In perfect repair
a. nominal expense. The first cost IN
this cry where limestone IS abundant
aHdsnear band. is from - To s'i cents
per squa-r YARD and TIE engineer esJi-
mates the cost 0f repairing on heavy
ua ,ic streets nc less than ! cent per
yard 4 year. while asphalt costs over
3 cents The addition NJ tar renders
tIe roadway impervioUs TO water
fr0sJpruuf IN winter and prevents mud
and dust in summer II is easily re-
paired and does not require scraping,
glUs avoiding much wearing Of the STIR
sace.
"One block Of tar macadaH LAID
more than a year ar0 On a business
street where there is heavy teaminc
shows no perrppubIe wear today. IN
residential streets these pavenenrs
have heen IN Hse eight years without
any repairs and are still in good e0ndi-
tiou. The success Of this method OF
r0Gdmakiug depends On care IN It's ex
ecU1ion. as in the case Of all composite
work n This character. and submit
for the Information 1f those Interested
the substance Of an interview with
the engineer of public works. Z. g.
Barrow. covering details Of the proc
esses in use here. Either stone or CO.
menr curhiug should be placed before
beginning the roadway. Cement costs
here 70 cents per linral foot and is Il
inches thick. - inches in depth am
laid on broken stone or gravel C0ruer~
arp rounded and al iron plate imbp,i
de,l for protection. on business streets
stone Is pr, ferIhle
An essential IN roadmaking is Il hard
ami compact foundation. which can be-
secured only hy the liberal use Of heavy
roEers - tu Us tonsi while the base Is
being prepared The grade and Gambler
should be- SO designed as to carry WI
ter of the surface quickly, and al
earth above the suhgvade should be re-
moved So as 10 conform 70 It's lpveI-I1
inches below the natural surfIce--
which sub@radp should ne thoroughly
rolled aad SUft spHts flied with stont-
The foundation must be- ,ampast. 4 sol
i'll byti Of stone not less than six inches
In thickness. If tile soil is Of a spUngy
nature. lurga far stones ara nrpfarrpd
All inf-sticpS should be filed with
small stone and gravel well rolled in
Over this Il coating Of gravel should b.,
ruIlra hard and then layer Of tar satu-
rated stone. not exceeding two inches In
diameter These stones before being
mixed with boiling tar Us to u impe-
rial gallons 10 the cubic YARD must be
thoroughly dried. either in the summer
sun or by exposure on heated plates.
until all moisture is expelled.
AFTER thorough rolling another stra-
tum of tarred stone Of the same dimen-
sions ana thickness is added. rolled
and covered with a layer Of gravel and
quarry chips, also mixed with tar. one
inch in thickness. to be rolled dowa
=
4 top dressing OF screenings is then
added and if Il light color is desired il
may be obtained by adding cement
Most Of the stone used here is machine
crushed"