Newspaper Page Text
THE ARIZONA REPUBLICAN, SUNDAY MORNING-, APRIL 14, 1912.
. . .if&&iiv.-, rPW " -r "n,' which tno emis t)r tlu
W r1 rest. Tlicy are six feet thick where
iHwm,' which the ends of tin
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Oirand. is somewhat out of the or
dinary in design. -.,
Salt Hiver at the location of jthe
bridge is normally a small straW
only about forty feet in width, run.
ning through the typical sandy couu
jtry of southern Arizona.-. It lies Jit
(a wide vallev some 1G0O feet from'
(height to height ,of land, a large
portion of which is "filled at the time
I of occasional floods. It was tlrere-Enfrineerine-
NeWS Lpnrh"rir!fore "pessary to carry the highway,
rJ? i ? L2.eWS f eCm&. so'e sort of a structure to a.
Technical JOUrnal GlVeS .distance of approximately 1600 feet:
Fine Description of fln'?iaml aftcr a stU(,v of tno SItlI1itio l
tT I , , 7 P, ,"Swas decided :n build a series of re-
Notable Structure and Its
In a recent issue of the Engineer
ing Xews, the leading engineering
publication in the United States, sev
eral pages were devoted to tin? de
fcription of the state highway bridge
now being constructed at Tenipe.
The article is well illustrated with
photographs' and drawings from the
The first Dart of the article, which
is free from the ultra-technical terms
which often confuse the lay mind,
is; (iuoted as follows:
"The recently admitted state of
Arizona had under its territorial gov
ernment an engineering department
Which comprised a well organized
highway division. As a part of the
work of this division, in the spring
of, 13J1 it was ordered bv the board
of rontrol of the territory to build
u bridsw across the Salt river . at
Tempo, Maricopa county, nine miles
cast of Phoenix, to carry the main
lint- of a north and south territorial
highway then under construction.
The then territorial engineer. J. B.
.'greatest death being 44 feet
There follows a detailed technical
description of the design, which is
omitted, the structure being described
m simpler language.
The bridge is of special interest
here, in that it is entirely a product
of the west, and largely local. The
cement ,ubcd comes from El Paso
Glrand. proceeded to carry "out the ' and the steel rods used for rein-
Tliey are six feet thick where
tho arches join them and are about
2 feet long up and down stream.
iThey widen out and lengthen as they
go down. The up and downstream
ends are rounded. The tops of tho
piers are pointed like the roof of a
house. Xaar what would be the
eaves, are rounded depressions In
which the ends of the arches rest
Thu nrtfhes are not solid clear across
the bridge as they are commonly
built, but consist of two so-called
ribs. These ribs arc 17 inches thick
cross-wise and a little over three feet
j thick up and down. They are in
reality curved beams. An idea of
the general arrangement of the
arch-ribs and their cross-braces
might be formed by the following ex
ample. Suppose we took a large In
dian bow nnd drew up the string
until the distance from the string to
the bow at the middle was 10 inches
and the d.'stu. ?e between the ends
of tho bow was GO inches. Now sup
rose vp had another bow shaped
exactly like the first and the two
.two .yere placed parallel six inohtfs
j'ourc wiui meir emis rcstinir on a.
lab.el and at intervals of five Inches!
were cross-braces which held them
rigidly !n place. Now If the wood
of these bows. Instead of being wide!
and thin, was VA inches thick ver
tically and i of an inch in width,
and was concrete instead of wood.
then we would have a small model i
5r- the nrch-ribs In the bridge. Tho
cross-braces,, in reality, are 9 inches
thick horizontally and vertically are
... I ft.lll.fl io till u . . -1 io. Ill lllllll
lrt !....., . ...
feet n span, jnaking a total lengthAif ' C " narl or art;"-rls,
1.-.07 feet. 9 inches. The decision toanrt 1,0,(1 U, lattcr firn,,i' in ',,aco.
use concrete was reached largelv be- i and k0ci t,Um from illt-'-.
In reality each of tho arch ribs is ,
made of two separate pieces, the
Joint being in the middle of the '
span at. the crown, or highest part I
of the arch. This joint Is called
a hinge. At the hinge, the ends of.
the concrete arch-ribs do not rest '
against each other, but haw fitted ,
into their ends large cast-iron bear-!
Ings which bear against a large ,
round steel bar or pin, the castings
being milled out to fit the pin.
These bearings are very similar to
the, small bearings which hold the .
belt shafts in shoos or factories, ex
cept that in this case the two halves .
of ths bearinir are held in place by
tho pressure of the arch ribs against
the pfn. The castings for each histr?
inforced Concrete arches, each
cause of the fact that convict labor
could bo used in the construction,
thus reducing the cost of the bridge
to suDerintendence and material. On
account of the failure of two piers
of si large railroad bridge about 500
feet upstream from ' tho proposed
bridge site, it was decided that all
piers and abutments of the nev
bridge should be built on bed rock.
Test holes at intervals of 100 feet
along tlie center line showed that
bed rock would be found at an av
erage or 20 feet below the surface.
v.xcept in the main, channel at the
north side of the river bed where the
rock had a considerable sag. the
y are (.-losing out all of
our Jndian rugs and it
will pay you to look over
our large assortment of
sizes, designs and colors.
These rugs were bought
direct from the Navajo
Navajo Itugs From '
$4.00 to $40.00
Now is the time to order
your awnings, drop cur
tains and tents, Vudor
porch shades, hammocks
and porch swings.
Lots of new goods just i-e-ceived.
Three carloads of
chairs, rockers, bookcases,
buffets, desks and porch
y llfhen people spend nearly one-fial! of
iheir time in their Xredrooms, of clon'i -see urA.y
iiey don'i fix ifiem vp coiiy, and foA iic life
of me, A.e one most necessary hinp in a home
is a prey, comfoAiaLIe Led.
ii.i knous floixn can uroAk fiaAder, Iecaxise
c make for fiiin. a re6fi place o sleep, 2oxt
uif oxah o see our Iredroom, Amy. c'm p ro-ud
of i. dome soon.
(P. S.-e? iro-uii eveAy single fiing. in my ircd
rootti vsheAe c9 always L-a y f-arnihare from
Dorris-Heyman Furniture Co.
Vhere you o.,e ie 2es alvsayA
A full or three-quarter
size brass bed Avitli two
inch posts. A very sub
stantial bed and an orna
ment to any room. We
can furnish this bed either
in the satin or polished
brass for $15.00. .
A full sized iron bed with
two-inch continuous posts
and large eas' rolling cas
tors. This bed we furnish
in white enamel and gilt
or all gilt finish for $11.00.
Other beds as cheap
Instructions and started the design
of a bridge a year ago. and since
then has begun construction. The
bridge, which is' described below,
from information forwarded us by Mr
The Best Bib Overall 0
A Hew Pair
If They Rip
LEVI STRAUSS A. CO.
MFRS., SAN FRANCISCO
forcing the concrete, come from Col
orado. It should be gratifying to
local engineers to know that Arizona
can claim the designing, ongineering
and constructon of the bridge, which
is a part of the territorial high
ay. ti1Toa often outside talent is
called In to supervise work when lo
cal engineers, familiar with local con
ditions, and equally able, are the log
ical men to solve Arizona's engineer
i . I
i ..I.. n,,. ....( I I
complete weigh about SCO pounds,, -"is. uic uj3 or all these I much more graceful and artistic ap- Governor Dis. of Xcw York has or-! methods In making pneea. Tt Is the
and are local products, having been ; e'rij connected crosswise of!p0arance. There are several an h dt red the f-tatf food investigation jpurpo.se to continue investigation of
made at the Arizona Iron Works In , wlsc oft he bride0' bv"18 .,eI.,1B1 1 bridges now in use which have spans commission to continue its work of the wholesale grocers and commission
Phoenix. These hinges allow the ; Alon tllu center- llii r'"! a.rc. , of w feet. . looking into th causes of tho high ' merchants after the retailer, has been
arch-ribs free action in the slight . ,,. ,,. l-ie bridge : irobably the first arch bridge ever cost of living. The investigators' will i looked over.
i'luwio .liv tujiiieeieu uv
movements ud or down caused by
expansion or contraction duo to
changes o temperature or when ec
centric loads are on the arch. A
smaller beams. On top of all these
, small arches and beams lies the
, floor-slab. The floor Is 5 inches
lead too deeply into a dry engineer
ing and mechanical discussion.
On top of each pier are two col-1
Tempo bridge, including the
foundations, is entirely built of con
crete. AH the foundations rest on
t-olid rock, jind in some cases it was t tv
l necessary to dig down over forty feet f
tlitflr -i M,.. - i .. .
full consideration of this action would Vi. "... , . . . c"rcu up
mi- iinuuii- ui ine roaoway, wiiire
it is 7 inches thick. A layer of bitu
lithic paving will be ylaced on the
floor and rolled. This will give the
are columns or posts 12 Inch .uu.ro j ZJL.. .",0. " "re
and of different heights so that their i".:"' ,,,, ''," , ., ' l" 1
!.... an. .... n.o .,. level with the ""J?1 whidi runs from the -i-oaduay.
i - : iiio floor is about six feet wifiir
tt9)aJJJWVDJJJ'"':'w 1 ""' wic uiaiuiicu oeiween tne
built was the bridge of Acniiliu.- h"ld y. session in X -w York city to- o
across the river Tiber at Rome, morrjw, "-hen i number of retail I Beans nre now rivals in Boston of
erected about the year 1C0 B. (, grocers will appear before William ' sleeping pitches in the prevention of
parts of wheh are still stand;ng. Church Osborne to explain their i tuberculosis.
I Wt t Have been sold during the past law
umns 17 by inches in size and l'"fw- " ,
about .0 feet !n height. On top of I aJ "a , Jbon . san f "
the-arch-ribs at Intervals of ten feet'! ""S.. UScd "n V.ie ,m'eU. s(
Under the Roosevelt Da m
below .the ground surface to get to $
me rocsi, anu ii refiuircu several
powerful pumps working together to ,
JgARLTON HOT E.L-3J so there Is an overhang of about
l - . . n , c 3 rcct at Cilcl hle of the bridge.
,n uu.u. T,,Is OVcrhanBlns Mrt f U)e f,oor
BERKELEY v m is supported by ornamental brackets
. . 51) Which curve mitu'nril frnm tl.,. ,.1
the rock, and it reuulreil several Ktgni ax. tno ma n Keway ui o .'. nAV. ...... .
the llnlve.rsltv and In the social V umns ,,tar uiclr to:,s- T"c tops of
-r--- - r- - ,a
.".":". 2 , have all the comforts of a first- Z er Ula tne I,aor-
w.e u BBH.B pros am. . .e S "wm xrith heantifulaurround- curhs "P
..,rr P u lhl m incs at the nominal cost of $40 ? about - feet high.
center of the town. Where oue lut- Au,us . '"oul s,x nicncs lUsl1-
un top of the
balustrade or rail-
such as Is
r - , i . . c : i : j i rnn itiipn tkhi" t.-1 -i irM"ii-.. mi... t. ..
y ... , . i I n is iiiuiiLii. uucuai laiLj inuiinvj w " w
makes the bridge safe against the 2 ?"l?g!SSiS?y 35 """"
undermining action of the river dur-
ing high water. ! $
The piers are the thick solid walls 1 tf93Sg9
MRS. H. R. BOWIE, Prop
usters or nosts are round and 4
inches In diameter, and have 5 Inch"
. ELBERT HUBBARD SAYS
"If a man can write a better book, preach a better sermon, or make a
better mousetrap than his neighbor, though he build his house in the
woods the world will make a beaten path to his door."
"While vg (lS"not write books, preach sermons or build mouse traps
We Do Sell Clothes
and, judging from the patronage we have received since opening we are
selling BETTER CLOTHES at a LESSER PRICE than any store in Phoe
nix. 'True, we have "Built our house in the. woods"; that is out of the high rent
'district and sell for cash.
ftThe people arc "making a beaten path to our door.
RVALUES, not price, is what counts.
ftAgain, you do not take any chances in drawing a garment that has been in
stock. for yearsshop worn or moth eaten. '
flOur merchandise is new just in. . ,
We earnestly solicit your inspection then shop around and compare.
. -- jar -
.aaafaaF aaaa itaKT'r W
. spaces between them. Connecting
I tlie tops of the balusters Is a hand
j rail S inches wide and 4 inches thick
of ten feet are larger posts S inches !
' suuare which strengthen the railing.
; and break the monotony of tin long
I line or small posts. These small
posts will be molded In forms on the
ground beforehand. When the curb i
Is being built, the balusters will be
set in place and the curb molded
around their lower ends and the
handrail molded around their tops.
At points directly over eacli pier are
slill larger posts In the railing at
each, side of the roadwav. These
'posts are S by L'l inches. On top ofi
il.n.... ...:ti i... . . i .-i .. . i ,
iiii.-.-u win i iv iiiat.-ii wini-iron lam)
posts, each of which will curry
single electric globe. Near tho ends
of the bridge there will be large or
namental concrete columns, at the
tops of which will be a cluster of
fivo electric light globes, somewhat
like those now used on the streets of
Phoenix. Insulated conduits under
the floor or the bridge will carry the
Wires for these lights.
Kxcepting the lower portions of the
piers, all parts of the bridge are re
inforced with steel rods inside the
......... .. mi.n. l..iw1. f .. . , -
rairo en:. mu .iiit-iiHUl ill Meei and
I concrete is well known, and each
part of , the bridge, piers, beams,
arches, posts, columns, brackets and i
floor, is made of such size that each
will carry the probable load or weight
which might come upon It. In fig
uring the strengtii of different parts
of a structure, a factor of safety of
three or four is used. Factor of safe
ty is a technical term and it
' means the ratio between the break-
ing strencth of a material and the
strength assigned to it in actual use.
I For oxamoV if a cube. of certain
concrete 4 'inches square would just
support a weight of 3200 lbs. wlth-
out crushing, in figuring the strength
oi ins cuue ngamsi crusiung, we
would use a factor of safety of four, I
thus making the allowable load on
I tho cube be only S0Q0 lbs. The factor
of safety might be called a margin i
of safety. j
At present eight of the twelve
i piers have been completed, Includ- ;
Inc -tho Mouth abutment, nnil n-orlf
will soon begin on the arch-ribs.
it Is a pleasant trip of nlno miles
from Phoenix to tho bridge site, and
well worth whllo to see the con
struction and get a few Interesting
and instructive points from the genial
bridg-s engineer, Mr. J. C. Ryan.
Tho Tempe bridge will bo among
thte very largest arch type of bridges
In the world. The use of arches in
a bridge allows the building of much
longer spans than in tlie- beam or
girder besides giving the bridgo a
WHERE THE WATER FLOWS
AND ALFALFA GROWS"
months neaiiv all of which has
been purchased by California ranchers jmd.iruit growers, w$lo are sell
ing out in the choicest sections of California and" buying vhandler
ranch lands. We do not need to say any more. This fact? fibne proves
that Chandler Ranch Lands arc the best buy in the southwqst. All of
this land has been sold surrounding the -hevtownsite of Chandler. More
sales are being made every day. Not a lot has been spld yof but they
will soon be offered for sale. If yon are-looking for aMocatSon in any
line of business it will pay you to investigate at once, :Stre,ct and ce
ment work is now being done; a twostoiy concrete' and-liieihotel and
store buildings will soon be erected and :other iinproveineiits made,
making Chandler one of the best towns in this rich agiienltyral section
surrounded by busy mining regions. ALFALFA', FRUIT ND OR
ANTGE LAND, $100 to $130 an acre.TEX YEARS' TIME?.' -Tisit th6
ranch and see for yourself or send for illustrated booklets. '
Mesa Improvement Co., Mesa;flriz.
in 1 i ' naiiffimi .n iliiniiii -wir
for backache, rheumatism, kidney or bladder trouble, and urinary irregularities.
Foley s Kidnev FiIis pu.si.fy the blood, restore lost vitality and vigor Prfwe whstitntea.
W 3t by Elvry 4 TTuleft- - -