The Crittenden press. [volume] (Marion, Ky.) 1919-current, 1922-07-07

different concrete sections when sub
iected 60 tmfic equipped with diner-
cot types ~ wheel. also 90 furnish
comparison between actual service
conditions aud laboratory tests This
tcst will be- Boz operation continuously
beginning some time lu June
Impact on Roads Studied.
lna rather elaborate series n IL
per.menis, ihe bureau has studied Inn
poet ~ trucks nn rUads and has de-
trrmlned approximately ihe magnitude
of impact force under different truck
and read conditions The eject ~
sulh impact 0n concrete rufemrnia
and several tipes ~ road on concrete
hase eas stldled AMI renf'ed on last
frar This scribe, ~ experiments o.
f0 be- continued ani enlarged over
l.n rad SECTIONS nr slabs have been
Constructed Boz duplicate series one
series l. uu o. carefully drained iry
suhEfude. ile 0iher SERIES Dr. 0n me
same Kind 81 snhuuie except that it
ga Kept vet and ns nearly saturated
Hs possible ~ means ~ au underlying
drain t.lo and side bitches nllcd with
waller
The testing 81 these slabs viii b.
go some time during che month u
Mny and viii b. hy means ~ new
impact machine nUN heing Constructed
uhieh Stimulates 'hc ncilon of ihe rear
wheel ~ truck uu this machine
may be- mounted truck Wheels of iIfsr.
enc sizes and weights mr1inT diner
elt kinds ~ TRUCK Tires This ap.
/ rauias may ~ sp operated as o. -
/ rruiuce the different ioad.nr and
equipment conditions ~ o. large variety
~ trucks The slabs viii he hammered
hy means of th.s marhlnf lu Doe renier.
0u fhc CORNERS. and 20 the sides sn
ns to obtain the relative strength on.
irr these different ondif|uns
slhal Investigations are being ron.
t.uuei for iho purpose of studying and
I Investigating relative stability. mis.
furu condition Hni supporting Fuiur
I Different methods ~ determining the
bearing value ~ soils orr aiso hflnt
studied thli o. as 90 whether SMALL
or larse ur,ns should D. us,i in d..
T. frrm.nine fhr rrilfitr hearing value.
The uuunr efcet ~ Temperature
ana moisture conditions ou rnncrsie
F. ratrments h. also helms Investigated
I Temperature and movement arc heiue
eonuisd graphically on coniinuous
charts ln addition 90 these icmrem.
iurr and movement measurements the
. Trrssur~ on fhc suhrrade under che
/ lru0reie slab nrr obtained hy meaus
/ ~ sal pressure evils This 'utrsiIr
/ Gloom viii rI,r somr definite Information
/ concerning ihc support u1eroi Poi suh.
/ smde to rig.l concrete uads Tits
| Investigation hls hoH unler uuy for
some time and VIII o.uiIuue probably
Or scar ur more.
The transmission of lolds ihruugh
I ilfrreui types of ratemenis o. che
[ uhEmdr b. being Investigated b.
mfam of soli pressure rgiis racci va
thc subfmio under me pa,cmruis.
I ibis test VIII also serve 90 show ne
[ relative suppurt ofcrDi to brick ana
other iypes NJ hlock pavement by cu.
crrte bases and broken stone bases
/ THIS Investigation has BEEN under way
for about oue YEAR and viii conilnue
Tor seine time to cnmc
! A lnrgc number u prominent engi.
ucen and others Interested IN foad
Work have visited the Arlington IN.
psrimeniul station o. witness The prep
aratiun and conduct of these expert.
mcnis u IL intended Co have an these
projects lu FUN operation by the mid
de u June Visitors arr always wei.
come aud those In charFc ~ the work
are always giad 20 give any luforma.
iiun desired about ihe experiments