MEDFORD MAIL TRIBUNE, MEDFORP, ORKGON. WEDNESDAY, aLARCH 30, 1910.
. s -
CITY NOTICES.
IjtUIUMIO.OO ,
nrv or aii:iI"oki, pkiwon,
WATKIt MAIN HONIIH.
Tim city coiiiioll of llio city of Moil
fori), Oregon, will receive Hcitlml IiIiIh
mi in r. o'litocU ii. in.. Anrll linli, into
f.r Mm Male of I21UMI0.00 city (if
Moilfonl wnlor iiiiiIm IhiimIh; ii per
until; ten your.
Illilu to In nt'coinpiinlod by u cor
tirioil ohor-k (Miitnl to fi nor com or th
ntiioiint bltl for. Tim rljjlit to reject
or itccdpl y "tul nil IiIiih Ih rc-Horvoil
by (lio council.
liltlN to liu mlilroMXt'il to Holuirl w
Tolfor. city recorder. Cortlfloil chock
to liu miulo piiyuhli) to tho city train
tiror,
ltoirr. w. THi.ricn.
City Recorder,
Dated Moilfonl, OruKott, March 2D
1010.
HTKKKT AHI'IIAI.T I'AVUMHNT.
Hnoclf leal loan. mihmlUod ' !' tho
ltiirlmr Amilinlt PuvllIU COIIIIIIIIiy :
MXCAVATINO, HOI.I.INO AND HUH
wninc.
' Tin, Hiili.rilllllllllllOII. UXCtlVlttlllK
rolllim. ciirlilnK. dralnar.o mill nil
work of u preparatory nntiiro havltiK
lion porformon in nccunuwuia wmi m
..irifhii nliniH mill HiioclflcntloliH cov
orliiK Hi" name, llio Ijiiho Hhall thon
' bo laid kk rollown:
PORTLAND CH.MHNT CONCJIHTI
FOUNDATION'.
Upon tho Miili-Krnilo, prepared an
nliovu dexcrlhcil, rorimuii cemoiii con
creto coniiionod of I'ortlnnd cement
clonii. Hlinrp nand ninl lirokon alone,
or Kruvtil, will lio laid to an avenge
tlilcknoHH of .. Incite, mo cemeii
Hhall 1)0 of n Rood quality of Atuorl
ran mnntifartiiro and ntinll tm nutiiiill
v tod to tho duly authorized official for
limited on at leant Ion (KM dayn do
foro It In tiHod. II Hliall conform to
tho following tout, condtictod accord
Inir to tho luothodH recommended ly
tho committed on uniform tctn of
cmiinnt of tho Am. Boo. of C. K,
nhnll not not In lewi than onu (1)
hour. Whon mixed In tho proportion
of oiio (1) part coinont. by weiKiit
mid three (.1) tmrtn of ntnndard nam!
1 It Hhall havu a teimllo ntruiifith after
oxnoxuro to ono (I) day In air anil
nix (0) daya In water of at least ono
hundred and fifty U0) pouncm.
Tho Hand nhnll bo clean and Hlinrp
not moro than 20 per cent of which
ttliall tianti a 50-inenh Hereon. It nhnll
bo free from loam adherent to tho
nand Rrnlnn. Tho Krnvel nhnll bo
clean material Tho brokon ntono
Hhall coulnt of any hard rock or
Kravol which Hhall bo nntlnfnctory to
tho duly authorised official. It Hhall
ho of Hitch n nlxo that all will pans
throiiKh a revolvltiK Hereon, ItavliiK
holen two and one-half (2W) Inchon
In dlamotor, and bo retained by n
Hereon having holen one-Half ( Mi )
Inch In diameter. Htouo which
tho run of crunher may bo lined whon
Iirovlnlon In made for tho considera
tion an nand of particien nner limn
Mio-hnir ( t4 ) Inch which It contnlnn.
Tho unit of meanuro In mlxlnu theno
matorlnln will ho tho lmrrel of ce
ment, weli;hliiK 380 pounds, and four
(4) cublo foot or Hand, Kravol, miiir
mid ntono. They Hhall uo mixed in
tho following proportions and In tho
following mntiner:
The Mind and ooment shall bo
mixed dry In tho proportion by vol-
timo ono (1) of cement to tureo (3)
of nand. and then made Into n mor
tar by.tho addition of water. To thin
mortar will bo milled seven u) menn
ures of wet brokon ntono or Kravol
and tho whole thoroughly mixed by
hand or machinery until It In entire
lv uniform.
Tho concrete, an thus prepared,
Hhall thon bo Hpread on tho mib-Krade
and rammed until mortar comes to
tho eurfaco, tho surface holnK ho
graded that In Its flnlHhod condition
It shnll avorngo , Inchon below that
of the finished pavement. No con-
eroto nhnll bo used that ban boon
mlxed more Him'ii ono hour.
Tho-coiicrote, nftor laying, shall bo
properly protected and ' tho surfacb
ahull ho kept molHt by sprinkling nt
proper Intorvnln.
At the oxnlratlon of Hiich a period
nil In found to be necoHnary In order
that the concrete shall have nttulnod
niifflclent net to Hiintaln a ntoam roll
or, tho binder course shall ho laid
HIN'DKIt,
SJono- -The binder shnll bo coin
posed of miltnblo clean broken atono
or gravol pnnnlng a ono nnd a qnartor
( 1 W ) inch Hereon, not moro man
five (5) per cent of which Hhnll pnnfi
a No. 10 Hereon.
Astilinltlc Cement Tho stone or
gravel shall Do Heated in suitanio ap
pllanoes, not higher than 300 dogroes
Fnhronholt, nnd then thoroughly mix
ed by machinery with nnphnltlo co
inont equivalent in composition io
that hereinafter set forth, In such
proportion iih will cover tho stono
with a gloHsy coat ntid without any
oxcohh of nsphaltlc cement.
LayingThe blndor must bo haul
od to tho work and spread whllo hoi
upon tho foundation to hiic.1i thick
iiohh that, after being liuniudlntoly
conipnnted by rolling, Ita avorngo
depth shall bo ono (1) Inch, nnd Its
upper Biirfaco nhnll. bo approximate
ly parallel to tho mirfaco of the pave
ment (o bo laid, Upon this blndor
courxo shall bo laid tho wonring sur
face No traffic, except such ns mny bo
required In depositing tho stirfnco
mixture, or In otherwise prosecuting
tho work, shall bo allowed on tho
blndor courso.
I ASPHALT W10AU1NO SUIltMCK.
' Pavoniont Mixture Tho pnvomont
mixture for tho wearing surfaco shall
bo composod of:
1 (a) Asphnltto coment.
(Ii) A mlnornl nggrogato.
A8P1IA1.T1C OI3MKNT.
Tho nsphnlt coinont shnll consist of
a homogeneous mlxturo of hnrd and
soft hltumlnH in such proportion that
It uhall havo n consistency na shown
by thu Dowon ponotratlpii mnchno of
botwoon HO nnd 85, depending upon
tho environment to wliloh tho uurfneo
will bo oxppsod, nnd shall not bo so
Biiscoptlhlo to chnngos of tompern
turo Hint If tho consistency nt 78 do
gr.008 Fahroiiholt Is GO It shnll ho bo
low 10 nt 40 dogroos Fahroiiholt, or
above 25 at 100 dogroos Fahroiiholt.
It shall consist of hydrocarbons so
stable nt 32G dogroos Fahroiiholt that
20 grama honted nt this tompornturo
for Bovon hours In a glnss dish 1
Inchon high mid 2 V Inchon In dlam
otor, shnll not loao by volatilization
CITY NOTICES.
more than fi tier cenl.
Tim asplmltlc reiiiont whllo In use
iiiIimI lie tnorougiiiy aidiaieii, nam
plcii of tho name shall bo supplied to
the duly aiillioru.ed orriciai wuen re
quired. Mineral Aggregate -The mineral
aggregate shall consist of saiiu, prop
erly limited, as hereinafter describ
ed, together with a filler, or fine
inlnoriil dust. . ,
Hninl-!-Tlio nnnd to bo used shall
consist of hard graliiH of satisfactory
Hiirfaco and shape, not containing
more than ono (1) per cent of clay
or loam. On nlftlng, tho whole shall
pans a scrtwu having ten (10) open
ings per llueul Inch; fifteen (15)
per cent shall pans n screen having
eighty (80) openings per lineal inch,
and at leant seven (7) per cent Hhnll
pass a screen having ono hundred
(100) oponlngs per lineal Inch.
Flllnr Tho filler shall bo pow
dered mineral mailer of such a de
gree of fliienons that llio wholo of It
nhnll pass n Cp-mosti screen and at
least 00 per cent a 200-niesh hIovw.
Combining Materials Tho mate
rials complying with tho nbovo speci
fications shall he mixed In propor
tions by weight, said proportions to
ho varied from tlnin to time within
proper limits, In ordor to meat chang
ing conditions In the grading and
character of tho mlnornl nggrogato.
Tim percentage of bitumen soluble
In carbon blsulphldo shall not bo less
than U.fi more than 12.0 per cent, nnd
shall he regulated by tho pat paper
test, which shall ho conducted ns .fol
lows:
Thero shall bo romovod from the
wmton. tiiiou a wooden paddle, n
quantity of surface mlxturo, which
shall bo ontlrely representative of thoi
average mixture In tho load. A ftlece
of brown mnnlla pnpor, with a fairly
Hiuootli surface ten to twelve InchCH
Kiiiiare. Is then creased down tho mid
dle and opened out on a surfaco which
will not conduct neat too rnpiuiy,
preferably n very firm and smooth
surface of wood, but not of stono or
metal. The hot mlxturo Is thon drop
ped Into tho paper sidewalks, from
the paddle, nnd half tho papor doub
led over It. Tho mixture Is then
Dressed down with o block of wood
of convenient site, until Its surface
Is f at. It In thon struck five or fllx
sharp blown with the block until tho
pat has a thlcknenn of about one-nail
( v& ) Inch, upon removing mo mix
turo. tho naner will Indlcnto by It
stain whether tho proportion of bltu
men contained In the mlxturo tested
Is satisfactory.
Tho sand nnd nsphaltlc cement will
bo healed soparntfdiy to approximate
ly 340 degrees io .is" j-'ireen i-.in
renhelt for the fotur - and 325 do
grees rahrenhe't f.ir ih latter. Tho
ntono dust shnll ho mixed while cold
with the hot nand. The nnphaltlc ce
meiil will then ho mixed with tho
nand and stono dust at tho required
temperature, and In the proper pro
portion in a suitable nppnratus, so as
to effect n thoroughly homogeneous
mixture.
Laying tho Pavomnnt - Tho above
mlxturo shall be hauled to tho street
In trucks with proper protection from
radiation, at a tomperaturo of not
leas than 250 degrees Fahrenheit, anil
spread upon the binder to such
depth ns will Insure an average thick
ness of Inches, after compression
by rolling. Thin compression shall be
obtained by flret smoothingthe sur
faco with a hand roller, or light steam
roller, after which hydraulic cemont
or stono dust slinll bo swept over it
when tho rolling will ho continued
with a steam roller until the surface
is properly compacted.
HIMCCII-'It'ATIOXH.
Specifications governing tho 1m
provementH of streets in tho city of
Medford by constructing an asphalt
pavement, concrete curbs or concreto
curbs und gutters nnd providing
drainage facilities.
Submitted by Clark & lionery con
structlon compnny.
OUTLINE OF THE WOUIC.
The proposed work conslstH In fur
nishing all labor material and np-
pllaucoi) mid Improving certain streets
n tlio city or flioarord uy grading
ho roadway nnd constructing thoro
on -nn nnphnlt pavement, consisting
f a concreto foundation incites
ii thickness, an r.sphnltle binder
courso inches in tiitcKnesa, nn ns-
phaltlc wearing surfaco Inches In
thickness, tho finished surfaco of
which shall bo to official "rado: also
constructing concrete curbs nnd curv
ed nrmnred curbs on official linn and
grndo: placing olx-lnch and eight
Inch salt-Klnxed vitrified sewer plpo
und (5-Inch nud 8-Inch enst iron pipe
where designated by tho city ongln
hour; constructing concreto cute
iih ns nnd supplying samo with cast
Iron curbs and covers and connecting
samo with snlt-glnzod vitrified plpo;
onstructlng standard motor boxes
with cast Iron covers, nnd furnishing
and placlnir monument cases; romov-
ng nnd disponing or nil surplus enrtn,
gravel, cobbles nnd rofuno mntorlnl.
BUrriiiviaiuis ui' wuttii,
Tho work Hhall bo under tho di
rection and supervision of tho city
onglnuor mid tho superintendent of
Htroota of tho city of ModfordJn their
rospoctivo cnpncities ns provmod uy
law. and they shall havo authority
to stop tho work whonovor tho pro
visions of these specifications are not
being compllod with and tho contrac
tor uhall Instruct his employes ac
cordingly. Tho city onglnoor uhall set
II stakes to tullcato lines anil grnuo,
and location nnd oxtont of tho work,
and mnko tho flunl menauroments
and estimates.
TIMB.
Tho work must ho commoncod with
in f If toon (15) dnys from tho dato of
tho Hlgnlng of tho contract nnd com
pleted within such tlmo as shall bo
flxod therein by tho authorized of
flcor or officors of tlio city.
GKADINO,
It will bo roqulrod that tho streets
bo grndod to a dopth of tiichoa be
low tho aurfaco of tho flnlshod pavo
niont nnd thut nil BurphiB oarth, grnv
ol, cobbles and rofuso material bo
romovod by tho contractor, Biibjoct to
tho conditions for hauling nnd ovor
hnul ns provldod undor tho subject
of oxcavntlons In tho gonoml speci
fications nronarod by tho city ongln
oor ot tho city of Modford,
ny ropontod tamping nud rolling
nud tho froquont application ot wator,
tho roadway snail uo tnorougiiiy com-
CITY NOTICES.
imeliiil to tho run ii I red elevation and
contour, thus forming n sub-griulo
parallel to tho surface or Die riiiisueu
pavement.
if nftor reneated watering, tamp
lug, and rolling, places are found in
tho sub.grade I hat aro above or be
low tho required grade, the surpluM
material shall bo removed from tho
high places mid tho depressions lin
ed; when tho wholo area disturbed
shall, aftor further rolling, tamping
arid watering, havo mo requirou eio
vii II en nnl rornnttctnena.
Tho rolling shall bo performed with
a roller having a weight on tne trac
t li tt wheels not Iosm than three liun-
dred (300) pounds pur inch width of
tiro.
LAYINO CONCIIBTH FOUNDATION.
Tho concreto shall, as soon as mix
ed, bo evenly deposited upon tho sub
grade nnd rammed until thoroughly
compacted and until freo mortar ap
pears upon tho stirfnco.
Tho flnlHhod concrete foundation
shall havo a uniform thickness of
inches nnd a regular contour parallel
to tho surfaco of tho finished pave
ment and shall bo wet on each of tho
two (2) days followlns its comple
tion and must bo protected from traf
fic by temporarily closing the streets
In wholo or in part ns the city engin
eer or tho superintendent of streets
may direct.
LAYING OF HINDER COUI18E.
After tho concreto foundation, pro-
vlntiHlv nronared. has bocomo thor
oughly sot, burdened and dried, and
after a porlod or rot less man sevcu
(7) dayH aftor It has been laid, nnd
aftor It ban been thoroughly clean
ed and while It Is thoroughly dry, a
binder course Inches thick shall
bo constructed thereon In the follow
ing manner; Tho matorlul composing
tho binder course, as hereinafter
specified, whllo at n temperature be
tween two hundred and fifty (250)
degriH'H and three hundred nnd fifty
(360) degrees Fahrenholt, must bo
spread uniformly over the concroto
foundation with hot tools to such a
depth that nfter compression It shall
have n thickness of at least Inches.
It must be rollei! Immediately with
n steam roller neighing not less than
one hundred and fifty (150) pounds
to the Inch of run nnd tho rolling
continued while the material Is in a
hot. Plastic condition until It Is thor
oughly compacted Into a firm layer
with each particle of rock firmly ce
mented with Its upper surfaco paral
lel to the flnlshod contour of the
street; such portions as -may be In
accessible to tho roller must fo tamp
ed with hot tampers to tho same de
gree of compression and finished to
a true surfaco.
LAYING WEAU1NO SURFACE.
Upon tho b'idor course, whllo It
Is fresh, clean and perfectly dry, must
be constructed an asphaltic wearing
surface Inches In thickness, In the
following manner: Tho material, com
posing the wearing surfaco, proparod
as hereinafter specified, while at u
temperature of nut less than two
hundred und fifty (250) dosrees Fall
ronlielt, must' be spread uniformly
over the hinder courso with hot tools
to such a deptli that nfter ultimate
compression It shall hav.o a thickness
of not less than Inches; Immediate
ly nfter spreading and while still hot
and plastic, It must bo compressed
with hot hand rollers wolghlng not
less than two hundred nnd fifty
(250) pounds to tho foot of run;
this rolling must be Immediately fol
lowed by a steam roller having n
eight of ono hundred and fifty (150)
pounds to tho Inch of run and this
rolling followed, whllo the material
I - -. I . I .... - . .
its nun wnriii una lunatic, uy u oii-mii
roller having n weight of two hundred
and fifty (250) pounds to tho Inch of
run and tho rolling continued until
the wearing surface Is thoroughly
compacted to a dense homogeneous
mass, but for not less tuan flvo (5)
hours per ono thousand (1000)
Kqunro yards of surfaco whllo trnvol
lug nt a rnto or not less than tureo
(3) miles por hour. Tho Tailing
must ho dono In nil directions ns fol
lows: First, by running tho roller
across tho street, then crossing ilng
oually from sldo to 3ldo in two (2)
directions nnd finally by rolling in the
direction of tho street; aftor tho roll
lug tho surfaco must bo finished by
brushing over It a small quantity of
hydraulic cemont; tho finished sur
face must bo smooth and truo to
grndo nnd contour within tho limits
of ono-uiurth ( n ) inch variation In
n length of ton (10) feet ns dotor
mined by a Htrulght-odgo: whoro iiv
accessible to the roVlor, the stirfnco
must ba tlnlohed to nn equal degree
of compression with hot tampors and
all edges finished with a hot edging
tool.
Whoro nianholo or cntch bnsln
curbs nnd covers come flush with tho
surfaco of tho street tho nsphalt must
bo finished ono-quartor ( 4 ) U.cn
higher than tho curb all around It
and llkowlse whoro tho asphalt fin
ishes against i.io face of tho gutter
must bo ono-quartor ( ) men
higher.
SPECIAL CONCRETE CURBS AND
GUTTERS AS PER PLAN AT
TACHED.
Concroto curbs and gutters nro to
bo coii8tructod In nccordanco with
plans hereto attached and in tho fol
lowing mnnnor: A proper foundation
shall bo proparod by thoroughly tamp
ing the oarth upon which tlio gutter
Is to rest until n firm nnd compact
foundation bus boon secured.
Proper forms shall bo provldod nnd
nfter tho concroto has been deposited
in plnco It must bo tamped sufficient-
to fill nil tlio voids and riusn tlio
mortar to tho stirfnco, Tho top aur
faco of tho concroto aftor having boon
properly tamped in tho forms mid
while st III rresn. Biinil bo given n
plaster coat ono-quartor ( M ) Inch.
thick or Btirr comont mortar won
trowolod nnd floatod smooth.
As soon as each section of.curb and
guttor'ls comploto, It shall bo coVor
od with oarth molstoned with water
and kept In this condition during tho
first Bovon 17) unys tutor construc
tion In ordor thnUtho concroto mny
proporly set.
EXCAVATION FUK HU1W1SK PIPE.
Tho oxcnvntlon for Bowor plpo shall
bo an opop tronch oxcavatod to tho
truo lino mid grado and hnvo n width
on tho bottom slxtoou (10) Inches
groator thnn tho oxtorlor dlnmotor of
tho plpo, A small excavation shnll bo
made under tho boll ot each section
ot tho plpo so that tho workman's
CITY NOTICES.
hands mny he passed completely
around the plpo In t lentlng tho
JolntH and so that the weights of tho
pipe shall not rest upon the hells,
Wherever tho bottom of the trench
s soft, yielding or tini Itablo for a
foundation for tho pipe, sufficient
dry earth shall bo ram mid into tho
soft material to insuro goou founda
tion.
SEWER PIPE
Tho pipes aro desltcnat'id by their
Interior diameters. TUy aro to ho
of tho host quality of vitrified, salt
glazed, ironstone, burned entirely
though, thoroughly glazed on tho In
terior and exterior surfaces and freo
from warns, cracks and other defects.
They shall bo of tho ordinary huh and
spigot type, not loos than two feet In
length, or a unuonu nianuara iiiick
nesn nn d Hhall not vary from true
cylinders moro than one thirty-sixth
(1-3C) of thoir diameter
LAYING PIPE
AdJustmont of plpo to lino and
crndo must bo made by scaping nway
or filling In or tamping tho earth un
der tho body of tho pipe and not by
blocking or wedging up.
In laying tho plpo the Joints shall
be completely filled wltu cement mor
tar and It will do required that tho
lower half of tho socket of each plpo
shall first bo filled with cement mor
tar before th.o spigot end of the plpo
is Inserted. Tho spigot end ot tho
plpo must thon bo prcased firmly into
tho bell, caro being taken to
compactly fill with mortar the
annular spaco at tne sides
ton and bottom, when a neat finish
shall bo given tho Joint by the appli
cation of mortar so as to form an
evenly bevolod surface from the ex
terior of tho entering pipe to the ex
terior of tho hub. In no case shall
pipe be laid In water or water bo per
mitted to flow-In the newly laid pipe
within twelvo"(12) hours after it has
been laid.
BACKFILLING
In backfilling trenches, sand or
loose fino earth, freo from stones,
shall bo deposited and tamped In hir
ers not exceeding six inches In thick
ness up to nt least tho top of tho
sower, when tho backfilling shall con
tinue by tnmplag the earth material
excavated in uniform layers not ox-
ceeuing ono 111 iwus uopui io wu..-,
In one (1) foot of the surface of the,
street, when tho trench shall be flood-
,( wltl. nnlll Ihn nnrth fllllnl-
has been saturated, then, allowed to
settle before continuing the filling.
After tho water has been absorbed,
the tronch shall be completely filled
and tamped In layers as before spec
ified, when the earth material so de
posited shall bo rolled and compacted
to the grade of tho adjacent street.
instead of the above process of
backfilling, the same may be prose
cuted liy depositing und tamping
loose, fine earth well under tho bot
tom or the p po and up to one-hair
the diameter of tho pipe. Then tho
backfilling may be continued by de
positing the earth material In uni
form layers of two (2) feet without
tamping but thoroughly flooding the
samo boforo another layer Is depos
Ited, the final flooding to be given
when the trench Is filled to within
six (C) Inches of the surface of tho
street and this flooding to be followed
by sufflclont backfilling to completely
fill the trench whon the surfaco of the
filling mnterlal shall be compacted by
rolling and made to conform in ele-
vntlon to the adjacent street.
CONCRETE
Tho proportions, by volume, for
concreto In pavoniont foundation must
be ono (1) part cemont, three (3)
parts sand nnd six (G) parts broken
rock or gravel. Tho proportions, by
volume, for concreto in curbs, gutters
and catch basins must he one (l)
part ccmeut, threo (3) parts sand
and flvo (5) parts broken rock or
gravel
If tho mixing s dono by hand, the
Band, fock or gravol and coment shall
bo carofully measured and thoroughly
mixed upon a tight platform by turn
ing tho mixture over threo (3) times
whllo dry with shovels and threo
(3) times moio whllo sufficient
wator Is being applied In n spray to
thoroughly wet tho mlxturo without
washing out any of tho cemont, when
overy piece of rock shall bo com
pletely contod witn mortal.
Only such quantities must bo mixed
nt a time :is run bo nroinntlv deposit
nnd tnmped tn ilaco be foro beginning
to set.
If a machine Is used for mixing, It
must be of n stacdard and approved
typo and tho concrete so mixed shnll
bo at loast equivalent to thut mixed
by hand as above prescribed.
CBMHNT
All cement used shall be of a woll
established brand of Portland cement,
furnished in original packages and
bearing tho orlplnal labols.
It shall leave by woight of roslduo
of not moro than eight (S) por cent.
on a No. 100 sieve and not mono than
twonty-flvo (23) per cont. on n No.
200 slovo.
It shall not develop initial sot In
less thnn thirty (30) mlnutos and
slinll not develop hard sot in less than
ono (1) hour i.or moro thnn ton (10)
hours.
Tho minimum stnndard strength ot
Btnndnrd briquet tea of nent comont
mlxod with fron elgthtcon (18) por
cont. to twenty (20) por cent, ot
wnter, by weight, shall be as follows;
Aftor twenty-four (21) hours In
molBt air, one hundred and fifty
(150) pounds per squaro Inch.
After 0110.(1 ) day in moist air and
six (C) days ia wator, four hundred
and fifty 450) pounds por square
Inch. ,
Aftor ono dny in moist air and
twonty-soven (27) days In water six
hundred (6001 pounds por squaro
inch.
CEMENT MORTAR
Tho cement mortar used In laving
plpo, sotting catch basin curbs and for
piastorlng the Insldo of catch basins
shall bo composed .of ono (1) pnrt of
Portland coment snaiwo (2) parts of
snnd.
Tho coment mortar used for finish
ing tho surfaco of concreto cuttors
mid curbs shall bo composod of ono
(l) part Portland comont and two
2) parts sand.
Tho sand and comont shall bo caro
fully moasurod and thoroughly mixed
with enough wator to form a plastic
nass.
No mortar biuui no used that has
bogun to sot,
CITY NOTICES.
A8PIIALTIO CEMENT
The asphaltic cement uhall bo a ro
flned natural asphalt; b a mixture of
n refined llquM asphalt with a re
fined solid .nnphalt or bo an oil as
phalt.
Tho asphaltic cement shall ho
homogeneous and Us consistency
must fall hotween tho limits of slxty
flvo (05) and eighty (80) degrees
penetration by tho District of Colum
bia standard. It must bo adhesive
and ductile also slightly elastic nt a
tomperaturo of thirty-two (32) de
grees Fahrenheit. When hoatod to a
temperature of thrco hundred (300)
degrees Fahrenheit for eight (8) con-
socutlvo hours it munt not Wo more
than flvo (5) por cent In weight and
must not he so changed by such heat
ing as to be made harder than of a
consistency of twenty (20) degrees
penetration by tho District of Colum
bia standard.
If a natural aephalt or a mlxturo
of a liquid asphalt with a natural
solid asphalt, It must, when ready
for use, contain at least sixty (60
por cent of bitumen eoiuuio
in cnloroform, and It nn
oil asphalt, it must, when ready for
use, contain at loast ninety-nine (93)
per cent, of bitumen solublo In chlor
oform and contain no freo carbon.
When the asphaltic cement is pre
pared by mixing a solid oil asphalt
with a liquid asphalt, the solid oil
asphalt shall bo prepared by distilling
the crude oil until tho asphaltic
residuum has a penetration not less
than sixty (CO) degrees by the Dis
trict ot Columbia standard, and shall
not be prepared by mixing or fluxing
a solid asphalt with a liquid or softer
asphalt.
The refined liquid asphalt used In
softening a solid asphalt must be a
stiff residuum of petfoleura oil with
an asphalt base. It must be free from
water and freo from llsht oils vola
tile at less than two hundred and
fifty (250) degrees Fahrenheit. When
heated to a tempertature of thrco
hundred (300) degrees Fahrenheit
for flvo (5) consecutive hours it must
not lose more than five (5) per cent..
In weight. It must contain not less
than ninety-nine (99) per cent, of
bitumen solublo in chloroform and
must contain no free carbon
.COMPOSITION OF BINDER COURSE
The bnder courec mim bo com.
d f MphaKlc nnd gound
cralned rock or rravel of such
C!OSS B""'?? rOCK OT BTC1 OI SUCn
'sizes cs will pass a ono (1) inch
screen; the rock or gruvel and the
asphalt cement are to bo separately
heated to a temperature of between
two hundred and fifty (250) and
three hundred and fifty (350) de
grees Fahrenheit In suitable ap
pliances and while both nro at this
temperature they are to be-thoroughly
mixed by sultablo appliance In such
proportions that each particle of rock
or gravel will bo thoroughly coated
with a sufficient quantity of the as
phaltic cement to bind the aggregate
firmly together when spread and com
pressed; it must contain at least six
(6) per cent, of hltumen solublo In
chloroform. Binder that appears dull
from lack of cement or from over
heating must bo rejected
COMPOSITION OF WEARING SUR
PACE
The wearing surface must be com
posed of asphaltic cement, sand and
stone dust proportioned and mixed so
that the composition, by weight, shall
bo within the following specified
limits:
(1) Bitumen solublo In chloroform
9 to 13 per cent
(2) Stone dust. . . G to 14 per cent
(3) Sand screened through SO mesh
and retained on 200 mesh screen
16 to 30 per cen
(4) Sand screened through 50 mesh
screen and retained on SO mesh
screen 16 to 3u per cent
(5) Sand screened through 30 mesh
and retained on 50 mesh screen
13 to 29 per cent
(G) Snnd screened through 20 mesh
and retained on 30 mesh screen
4 to 9 per cent
(7) Sand screened through 10 mesh
and retained on 20 mesh screen
3 to 6 per cent
STONE DUST,
Tho stone dust must be pulverized
llmostone of Portland cement and
must bo of a degrco ot tlnoness that
will all pass through n fifty (50)
mesh to tho Inch screen and at least
sixty (60) per cent, pass through a
ts'o" hundred (200) mesh to tho Inch
screen.
MISCELLANEOUS PROVISIONS
The contractor shall personally nu-
porv!o his work or causo It to be
dono by a caMble representative
competent to recolvo and enwy out
any Instructions that may bo given
him by the cliy onglneor, superlnten
dent of streets, or their ropresonta'
tlvou.
Tho material to bo furnished must
bo of tho best ot their respective
kinds. If upon Inspection any mater
lal is found faulty It will bo rojected
and tho contractor shall immediately
romovo It from tho works
Wherever theso specifications pro-
scrlbo or set rorlli n maximum and a
minimum, either in size, percentngo,
or thickness; or relating to quality,
kind or character of mntorlnl, or othor
mnttor, tho won; shall bo doomed to
havo boon completed, In compliance
with theso specifications, and will bo
accepted as such, It ddno within tho
said maximum and minimum.
Tho contractor shall at all times
during tho preparation ot tho mater
ials for asphalt pavoniont allow tho
city onglneor, superintendent of
streets or thoir representatives freo
access to all parts ot tho plant tor tho
purpose of Inspecting the preparation
such materials and shall also allow
snld city onglneor, superintendent ot
streota or their ropvesontntlves to
tnko samples of tho matoriais used for
tho purposo of analyzing samo.
Tho contractor shall furnish all
labor, tools and nppllanccs roqulrod
to comploto tno work Mn nccordanco
with theso specifications and within
tho contract tlmo. Ho must provldo
all necessary barricades and maintain
lights at night :.t all potato ot danger.
ANNOUNCEMENT.
Dr, Goblo is proparod to fit glassos
tn ull oases of defeotcivo sight that.
!nseoa will remedy. Repairs of all
dnds. Brokon lonaoa duplicated, In
visible bifocals.
18 WEST MAIN STREET.
I
BARGAINS
lot acres, cleared, clone to stMlon, 920,000.
12 acres, cleared, two ami one-lutlf miles from Modford, 90000.
20 acres, In pwirs, Imlf mile from Central Point, $7000.
-to nrren, 25 acres In alfalfa aid Irrigated; beautiful vlowj 90OOO;
02 acres, bearing orchard, cloao In, 921,000.
HUNTLE.Y-KREME.R Co.
214 FruitGrowers
II
Electrical
Fudge Parties
Informal fudge parties are enjoyable affairs when G.E. electrically
heated utensils arc used. No visits to the kitchen are necessary,
as the fudge may be prepared in any room in the house.
You can entertain your friends with delicious fudge or candy,
made right before their eyes, and the novelty and convenience of
electrical cooking will enchance the pleasure of eating the sweets.
If you have electric lights in your house the G.E. water heater
and the little G.E. electric stove will be found useful in a
thousand ways. Their first cost is small and they consume very
little electric current. ;
Rogue River
B. ENYART. Presidem
JOHN S. ORTIi
THE MEDFORD NATIONAL BANK
UAPITAL .... $50,000
SURPLUS $6,eoO
Safety boxM for rent. A leneral Banking Business transacted.
We solicit your patronage.
In Case of Sickness
PHONE 3641
MEDFORD PHARMACY
Near Post Office All Night Service Free Delivery
MORTGAGE LOANS
Money on hand to loan cn Heal Estate. City and County
Warrants bought Fidelity and Indemnity Bonds Furn
ished. Fire Insurance.
JAMES CAMPBELL
Phono Main 3231.
Fine Lots
Six lots on Medford Heights; price for a
short tiir-e, $700.
Corner lot on West Main. street; close in;
a few days at $1100.
Rogue River Land Co.
11 NORTH CENTRAL AVENUE,
for BUYERS
Bank Builcing
Electric Co,
J. A. PERRY, Vice-President
W. It. JACKSON. Ass't Cashkr.
208 Fruitgrowers' Hank Building