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About Medford mail tribune. (Medford, Or.) 1909-1989 | View Entire Issue (March 30, 1910)
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