Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1909-11-01

GETTING THE GRADE READY FOR STONE.
[From Good Roads Magazine, New York
same principle can be adopted in the
simple turnpiking of Il road as that
which will have to he employed in the
most expensive construction that we
are called upon to build today.
The first principle to follow in every
case is to properly Grain the section Of
road to be improved. after which you
then take up the question of sub grade.
or foundation upon which to build
your road. | have found the best ma
terial with which to conSji act Il sub
grade is sand or gravel DisinteCratcd
rock. with an udmiXture Of light loan.
makes Il capital sub-grade.
Sprinkiing the sand before rolling.
using Il light roller before using the
steam roller or tightening the roller
by relieving the boiler of onc-haif its
water capacity is Il great assistance in
tirning the road. us the sand will not
then creep before the roller thus MAX
Ing the sub-grade firm, \ little sub.
soil placed on top of the sand is Il
very good practice. This Will prevent
the nHtcria froin being pu he'd Nn2hd
OF the roller, and it will make Il good
sustaimment for the stone or gravel
If something is not done to make -
sandy foundation firm ii will shift.
Sighting the sub grade is sometimes
practicad by contractors. with the result
that they Do not "au anything, for the
contractor has to pay in the end an IN
creased expense owing to the tact that
there will be- Il greater shrinliu@e In the
stone.
The WiscSt contractor IS tie man who
viii spend more time with his II cents
m hour help in forming the Sub-grade
and thereby require less stone or gray
81 and other incidental expenses. This
is often the reason why the tonnage
Of stone per mile has been j"gply VX-
cecdcd over the ORIGINAL estimate of
the contractor This is very easily
demonstrated by taking the cost of the
stone per ton. with freight the haul
from the ears. the time consumed in
applying the stone on the road, to say
nothing about The expense of watering
and rolling required to get the road
into perfect bond-tirm and unyeid.
ing
But you will ask naturally, us not
the road better by reason Of the fact
that more stone has been used:' Not
at ALL This would be true if a uni
form depth of stone were on the road.
Eul it is an intermittent depth. In
some places there may he four inches
of stone. waite in other places there
may br eight inches. The Influence Of
the rol'"r is not uniform where the
sulruiiifp is NOT sufficiently hard and
firm Nhpr"vpr there is ~ intermt-
tent Gei'th Uf STONE the road will de-
vtiun Il V tkurSS because the pressure
-. ,hc re- ley uu the read has not been
uuitorn
NDu mu+t have good. we'll built.
substantial fuundatiuu as we'll rs
: ,od surfacP-a roof to your road. |
do not ard never have believed that
The surface OF thn road can ever he
come an accomplished fact until this
MI imrnrtant ard necessary adjunct 70
Il coed road the fuundntion--is taken
care Oi.
Artpdnting the surface must come
nir""tness ~ YOU" road then the re-
duction cf these grades to = minimum.
Iheu ihn r'le'v-i"" II drainage. or
these the t,rsr i';p"r.Anr l. under and
surface drainage. after which comes
I've uuesrion ~ surfa"in- he least I'M
urrtnrt ~ ru th'0,r' .O,'nf",-n1 with