La Junta tribune., 1912-06-15

n hinder. ~ W. OsSss = ~so0 - Sr<0 -
,ssult will be ioose aand 90 the sur
,,e.: II too much clay IL usesi the sur
f,.e OF the road will become s,ick.
after rains
The best mixture Of sind nnd clay
ran he made when the materials are
wet. nd particularly Ii this true of
the plastic OF bail .ia4A
II the clay is plastic or ball clay
much greater effort will b. necesaary
10 obtain n complete mixture. II II In
= slaking clay the mixture will hr
mach more readily obtained T1ts
slnd OF clay is not ~ satisfactory
however. ~ the bal: clay. - it, bind.
ing powers are much tess. In aele.t-
ing clay for road purposes II b always
be-, to se,ect the sticktest clay avail.
able 4 common test 10 to wet ihe
thumb and place h-agalnst Q piece Of
clay n the clay will not stkk 10 the
thumb Il u safe to assunse that Il will
t- a poor binder In said clay road.
As the desirable proportious of sand
aud clay sr~ such that the particles Of
clay barely fill the voids between the
grains OF sand. II II well In drteruin-
INK the quantity Of clay to b. applied
TO sand road or saul TO b~ applied to
a clay road TO know approximately
uow much Is needed 4 simple method
Tor determining the relative QuNnitss
&, 10 take two glasses Of the same size
and hll on. with dry sand which Il Is
proposed tn use and the other with wa
ter The water should then be poured
rarcfully In the glass of sand nnd al
lowed to trIcklc down through the snud
until IL reaches th. bottom NJ the glass
When the water has been poured into
the glass Of sand to the point OF over
dJwing We may assume that the void>
Jeiween the grains of sand have been
hlleJ. and consequently the amount Of
water taken from the full glass would
represent the volume of clay needed To
oil the voids In volume OF sand equal
to that In the other glass II Is better
to use little less clay than would mn
pear to be ne ssary. n the tendency
/. to overestima,e the amount needed.
Good drainage IL the most essential
feature of the sap.i-clsy road jun s~ II
is of all other types Of road 4 sandy
or GraveIiy sstl affords better natural
drainage. and II the sand II present 70
an exceptional extent the ouiy provi
sion necessary for drainage will be 70
rown 'hs surface Of the road iu the
same manner ~ peescribed for earth.
gravel or mscadam roada. n the road
is located through land that n 20 low
Ms to i,e continually wet II will he psr
.sszry In addition to crowninG the road
TO provide wtie bitches on each side
and to raise the roadbed little higher
than the surrounding country.
After proper drainage has be~n ~
beginning near the SQUIRE of supply ~
the clay or sand The clay should
then H. spread to . depth OF from six
to eight inchea IN the center. sioping
Oh gradually 10 . thin layer ~ the
sidss rpon ths clay sh0uld ise placed
. tAia ~ovestne 81 .anA II the clay
b of the piassIr kind II will tlsen lie
necessary to pIow and hnrrow II. ad
vants 60 trIng taken NJ rains To puddle
the xurfacr With disk harrow Sand
should ,~ gradually sd.l~d until the
surface of the road ceases to bail and
rake
II the clay l. placed on sand To a
depth of six inches cubic yard Of
clay will cover dfty four linca feet
ronsepuenti, n sixteen fo" road treat
81 In this manner would require one
cubic ynri "f ciay Tor each three feet
NJ length A ME 81 sixteen fo"t
rosd would therefore require Leo
cubic yaris ~ clay
n tho clay sub."il Is to le treated
With asnd II should he pIowssi aud
AaFfowed I" depth of about four
ischea On this prepared sul,~ursas~
shoukl lre placed from six TO eight
isches NJ clean .and. .s,resd thicke~'
q the censer and sl"i'inx to the sltle~
ID much the Hsm~ manner a. the clay
b apVsseA IN sxnd road Thsas ma
tessais should then h. mixcd DRY iu.
sssaA ~ the ~es oiSlnx. which h
peefersb,s WHEN ebay IL spclleA 70
sas1 TAia is prefersble ber~sss tbe
elay ess ~ heller paivsrtsei whsa h
10 dsy ssass. After dry oixine ths road
sAssiA ~ ps4ldled following ~ ORA
heavy rails. When tAs materials ass
thees~gAly aissd ss1 pssjdisA . eua1