The daily telegram. [volume] (Clarksburg, W. Va.) 1901-1926, 1912-06-07


binder y too much sand Is used tho
r. at will be loose sand 81 TIE SUR.
saee TO much clay IS usei The SUI.
face of "A ro9d will become sticky.
after rains
The best mixture Of slnd ana cliiy
can be made when the materials are
wet, and particularly Is this true of
the plastic Or ban clays.
f the clay s q plastic or ban clay
much greater effort win be necessary
to obtain a complete mixture; e II Is
shaking clay the mixture vim DO.
much more readily obtained. This
kind Of clay IS not as satisf 4etoFy.
however, as the hall clay, as It's hind
Ing powers are much less. IN select
ing clay for road purposes It IS always
best 70 Select the stleliest clay avail.
able. a common test IS to wet the
thumb and place II against a piece Of
clay. II the clay WIN not stick to. the
thumb Il Is safe to assume that e VIM
be alpoor binder in a sand clay Boads
AS the desirable proportions 81 sand
and clay are such that the particles OF
clay barely fill the voids between the
grains fof sand, It IS well IN defermin-
ing the quantity Of clay to be applied
to q sandroad or sand to he applied to
clay road to know approximately
how much Is needed. A simple method
for determining the relative qgantity
islto take two glasses Of the same size
and fill one with dry sand which 1t Is
proposed to use and the other with wa
ter; The water should then be poured
carefully In the glass Of sand and al
lowed to triekle down through the sand
until it reaches the bottom Of the glass;
When the water has been poured into
the glass OF sand to the point OF over
flowing we may assume that tie voids
between the grains Of sand have been
flled, ana consequently the amount Of
water taken from the full glass would
represent the volume Of clay needed to
ill the yoids In alvolume Of sand equal
to. that In the other glass. 1t Is better
TO use q little less clay than would ap-
pear to be necessary, as the tendency
Is to oyerestimate the amount, needed.
Good drainage is the most essential
featlre Of the sand-clay road just as it
Is Of all other types Of road. Ajsandy
or gravelly soil affords better natural
drainage, and if the sand is present to
an exceptional extent the only proyi.
sion necessary for drainage will be to
crown the surface of the road In the
same manner as prescribed for fearth,
gravel or nlacadam roads. It the road
is located through land that is so low
as to be continually wet it will be nee:
essary in addition to browning the road
to provide wide bitches on each side
and to raise the roadbed a little higher
than the surround ding country.
After proper drainage has been !se-
cured the toadbed should be crowned,
beginning near the source Of supply Of
the clay or sand. The clay shohld
then be spread to a depth Of from six.
TO eight inches in the center, sioping
OF gradually to thin layer at the
sides Upon, the clay should be placed
a thin. covering of sand, II the clay
Is Of the plastic kind It will then ;be
necessary to plow and harrow d, adj
vantage, being taken OF rains to puddle
the surface with a disk harrow. Sand
should be gradually added until the
surface Of the road ceases to BAH and
cake. y
If the clay displaced ON sand to a
depth Of ski inches a cubic yard 3of
clay win cover ffty-four lineals feet;,
consequently a sixteen foot roadstreat-
ed in this manner would require one
cubic yard Of clay for each three feet
of length. A mile Of sixteen foot
road would therefore require i ,76O
cubic yards of clay.
If the clay subsoil is to be treated
with sand it should be plowed and
narrowed to a depth OF about four
inches On this prepared subsurface
should be placed from six to eight
inches Of clean sand, spread tllickest
ut tile center and sloping to the sides
In much the same manner as the clay
Is applied to sand road. These ma.
terials should then be mixed dry in.
stead of the wet mixing, which is
preferable when clay is applied ito
sand This Is. preferable because the
clay can be better pulverlzed when in
a dry state. After dry mixing the road
should be puddIed following the, first
heavy rain. When the materials are
thoroughly mixed and puddled 4 road
ID N s