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HomeMy WebLinkAbout1928 - West Fariview Bridge~ n . . _- d ~t "~ ~ ~~ r.. -, ~S il~ ~r - ' .. .. , q .,'. ~/ .Ij, " ~r~ i. '1~ ~ ~~~t~~~ ~~ ~~ ~.. ,:. __ ~... ~„ _.4,.Y.,~.. ,,,~. i '~~ Qevisu~ i r ~ ~~ :, i SPECIFICATIONS FOR STEEL PLATE GIRDER BRIDGE OVER CONODOGUINET CREEK STATE HIGHWAY ROUTE j0 BEST FAIRVIEVP CUMBERLAND COUNTY, PENNA. .~. S. LONG, CONSULTING ENGINEER M. AMER.•SOC. C. E. 57-59-61 MONTGOMERY TRUST ARCADE NORRISTOWN, PA. 1 NOTICE TO COI3TRAC'IIDRS Sealed proposals Will be rzceived at the office of '~ the County Commissioners, Court House, Carlisle, Penna., on S~ .~. 1925, at ten oiclock A. M. and opened at eleven O~clock Ai:. M. for furnishing tools, machinery, labor and materials naeessary for the construction com- plete of a f our span st~~l plate girdex bridge over Cono- doguinat Creak on State I~ighc~a,y Route 30, 9Past Fairview, Cumberland County, Penna. The bridge consists of four 64 ft. platy girder. gpa~ns, with approximat©ly 30 ft. batrr3an g~:rde~s and a five ft. sidewalk. All proposals must ba for the work complete in full wccordance c:ith plans a,nd spacif icc,tiona on f ila ix~ the office hf the County Commiasionar3, and ~~ust ba mad3 on th3 form of proposal atts,chad to and forninb a part of the sp~cificationa. Copies of the plans and apacifications racy be obtained froL~ the County C.oram~.s3ioners on deposit of tin doll~.rs, which trill ba rafundad on return of the pla,nc and apacifications at or before the hour sate for the opening of bids. Each bidder must a,cconpany his proposal crith a cert- ified chock for at laagt tan per cant of his bid, na,dk payable to the Comr.:iscio~~ers of C~xzbarland County, aa~ a guarantee of boot faith and to protect the C.aunty from ~ any loss by failure to co~,ply s~~ith the terms of the pro- posal. Th-e ribht is r~a~rved to rej act a,ny or all bids. By order of Cwounty Cor~rllaaioners Ca,rlislo, Penna. 2 PROP06ALS RECEIVED: 1. Sealed proposals gill ba roeoived at .the office of the CAUnty Corazliasionors, Court House, Carlisle, Penna., • on 192 at ten o~ clock A,. ~.. and opened at eleven 'clock A. ~. for furnishing tools, r~e.chinery, labor and ~;aterials necessary for the construction of a four span steal plate girder bridge over Conodoguinat Crank on State High~ray Route 30, West Fairvia~, G~.iL~barlan3 County, Penna. WORK PROPOSED: 2. Tha intent and purpose of thaUe spacification:~, suppla- mant~d by plans, is to build a four span steal plats girclar bridge, v~ith sidocra,lk ar~d other appurtenances, axe©pting rrin~,~alls, as sho~-m on plans, on nay? location as shorn; and to maintain traffic on old bridge until co~:pletion of near structure. 3. The crork to be perforr.~ad alI tools, machinery, labor proper to obtain the results ed in these specifications. PLANS: still consist of furnishing and materials necessary and indicated on plans and d~scrib- 4. The plans on file irr the office of the County Cr~r~:is3- ioners shoe general location, details and dir~ansions, and the work shall ba constructed in all respects asaording to thaw which accArspany tYr2ae specifications. 5. Any variation of location, size or dir~anaions from. that shosm on plans, as nay be required by the axiancies of construction,, trill be i.n all cases determined by the Engineer, but the Contractor shall not deviate from the intent of these specifications and the plans. 6. On all plans, figured dimensions are to govern in ease of discrepancy between the scale and figures. These span. ifi~ations and plans shall aooperata with and mutually in- terpret each other. Any work called for by either, nec- essary to comp7~ to the construction, shall ba considered as called for by both. They tisill be bald to cover any or all work or materiak that could reasonably be required to complete the work, and any apparent omission of a de- tailed description concerning any point, shall be regarda3 as meaning that only the bast general practise is to pre- veil. Pi~OPO SAL S • 7. All proposals must be for the work complete in full accordance with these plans and specifications. 3 g . Each bidd-sr must use the form of proposal ~,t tachod to and forming a part of thess spacifics,tions. This proposal shall not bo dotach:d from the specifications. ~. Each bidder must accompany his proposal ~:~ith :~ ~ ~artifiod check for at bast ton per cent of his bid, m~,do payable to thaCommissioners of @umberland Cour_ty as a guarant~~ of good faith and to protect the 0-.rnor from any loss by fa,iluro to comply Frith the forms of the proposal. 10. Envelopes containing proposals must be plainly marked on the outside :~rith the name of the proposed ;vork and the nar,~e and address of the bidder. 11. Tho right is reserved to ra~act any or all bids. FORFEITURE OF CERTIFIED CHECK: 12. In case the successful bidder fails or refusal to execute a formal bond and contract ~rrithin tan days after the notice of the acceptance of his bid, his certified check will b~ declared forfeited as liquid- ated damages; the letter of acceptance c~i11 be revoked and all obligations of the OvTner, in connection tharo- ~rith, ~1i11 be cancelled. RETURN OF CERTIFIED CHECKS: 13. Checks of the unsuccessful bidders Rill be returned as soon as the ativard is rlade, and the check of the successful bidder -.~i11 bo returned ~~hen the contraatis signed and surety bond furnished and approved. (~UALIFiC~4TI0NS OF BIDDERS: ' 14. Bids are invited only from contractors regularly engaged in the ling of ;;ork under consideration. All bidders r.:ust be prepared to present suitabl° evidanae of their financial Standing, render statements as to their available plant and r:,achinery and to furnish a list of similar xork previously con3tructed. DEFINITIONS: 15. Lhenever the ,to rd OW?JER is used ~n these specific- ations, it shall be undar~tood to mean the County Comrnissionere and the County of Cumberland,. Penna. 16. Whenever the -.acrd ENGINEER is used in these sped-- f ications, it shall b~ and ~rstood to rnaan Jar,~es B. Long, Consulting Engineer, acting directly or through hi,s • properly authorized agents, lir.;ited to the particular duties entrusted to ther:~. 17. Whenever the ~-turd CONTRACTOR is used in these spec- ifications, it shall ba understood to r.~~aan the party or parties, co-~rtnerships or corporation,'~hich have been a«arded the contract. r EXAciiINATION OF SITU': l~. Bidders rust satisfy thor:rc~lvos by a car:~ful .;xarr:- ination of the cite of the structur:: to be built, the foundations, the proxir:ity of suit~bla ruatsrie,ls, con- ditions for unloading, hauling and storing of r..atarials, etc•, that they fully understand a,nd a.ppraciate th~ •~;ork to b.; constructed. PRELITtIiQARY II`?FORi~ATION: 19. IJor verbc.l inatructionc or inforr:nation to biddcrc ~.~i11 be binding. Tha plane and specifications ti,ill be contiiderad as clear a.nd coi.,plctc unl:;ss ~Y;ritt:sn attent- ion is called to any ::~pNarent discrepancy before the op~n.ing of bids. CHANGES; 20. The right i3 reserved by the Omer, acting through th.: Engineer, to ~::ake such changes, or to increase or ~.-ccrea,se the arlount of ~~.rork to be done under this con- tr:.~ct, a,s r.:ay be found necess:~ry or deerr:ed advisable, during construction. A11~.such,changes shall be ordered by the Engineer in STriting or otherwise shall not be considered valid. BONDS: 21. The Contractor will be required to execute a Surety Company Bond crithin ten days after notice of atiJard of contract, in an amount not less than the contract price, for the faithful performance of the contract and to indemnify and save harmless the O~~ner from all suits or actionA of any kind or description brought against them for or on account of any injuries received or sustained by any party or parties, by or from the said Contractor, his agents or servants, in the construction of this r~ork; or by or or.. account of any act or omiss- ion of the Contractor or his agents; and to save harm- less, indemnify and defend the Otirner from any or all claims for infringement of patent or royalty claims. 22. The Contractor shall also furnish another Surety Company Bond in an amount not less than the contract price, ~.7hich shall guarantee the payment of all labor and material entering into this ~:rork. STARTING ~'; ORK 23. The Contractor shall start active ti7ork on this contract -,7ithin ten days after approval of his contract and bonds by the proper authorities. INSURANCE: 24. Thy Contractor shall file evidence 7ith the Owner that he is carrying insurance against liability to his employees as provided by the ~1Jork~ns Compensation Act of 1915. 5 PERL4ITS 25. All permits of a tempQxary natux8, inoident to this operation, shall bz secured by and at the expanse ~ of the Contractor . SUBLETTING: 26. Tha Contractor shall not assign, by po~~~ar of attorn- ey or othar~~ise, the ~hola or any portion of this ~:ork. No part shall b~ sublet, except to parties skilled in and properly equip~~ed for samo,, and then only ;rith the consent of the 0^~n~ r~ DISPUTES: 27. Thy ~;ork is to ba dons according to the directions of the Engine,~r and if any malarial ~rhich does not ma•at the requirements of the spacifications,~is brought upon the rJOrk, it shall be r~movad at the expense of the Contractor. Ii th-~ Contractor fails or neglects to do any part of the ':cork spacifi~d or directed, then all ~7ork shall ba discontinued upon notice from the Ot~ner to the Contractor, or his superintendent in charge of the l~rork, until such times as the ~~ork rejected has been Bona in accordance clith specifications. Tha Con- tractor shall not b~~ entitled to or allo~::ad any com- pensation or extension of times for such discontinuanoe or suspension. CONTRACTOR'S LIABILITY: 2~. Tha Contractor shall indemnify and save harm].sse the 0~,7ner, its officers and agents, from any a,nd all suits for damages in r-cfWrsncc to li::ns for labor done and materials furnished, or due to injuries received, patents infringed, improper ma,tarials used, or any cause whatsoever in the construction of this a7ork. 2g. He shall maintain proper guards, cratchmen, red lights, etc., for the safety of the public. ERRORS AND DISCREPANCIES: 30. If th,; Contractor, in th~ courses of his ~~rork, finds any discrepancy b--~tr~aan the plans and the physical condition of the site, or any errors in plans, or on lwyout as gi~cn by th~ Engin, _~r, it shall b~ his duty to immadiat.ly inform th.: En~;ine~er in '~rfting, ':'rho aha~l than promptly v.:~rify same. Any ~:rork don after such discov~-ry, until authorized, shall b~ done at the Con- , tractor's risk. PROPERTY AND PIG'~T OF En~TRY: 31. The Omer ~7ili provide the site upon which the :7ork is to b~ con~tructad, togath~r ;rith the right of entry thereto, bu if the Contractor requires additional .space 6 or land and accee thurato ary construction fa,ciiiti~s ~'~nd s,zmc do:,°a not bclorg to cidcd :~t the -cxpcno ~ of the LINr~S AND GRADES: 32. The Engineer rill for the n:~'.~ structur„ c.ar~fully preserved. ly r~aponsible for th line3 _~nd grades. I~dATERIALS: for th::~r~ction of t~mpor- or far ctoragc of rn-titcriale th~ C1rm~r, it ahei,ll be pro- Contrc,ctor. furnish the Contractor .pith lines and a bench mark, which 3ha11 be Tha Contractor ~7i11 be hsld atrict- complated Ord corrc ct finished 33. All materials necessary to carry out the ~cork h~r~-- ir. described c.nd sho-~7n on pl^ns c,re to be the best of their several kindc a.nd must confoxm strictly to the requirements of the Up::cifioations. LABOR: 34. All labor herein described, ind3.catad on plans ci~pandant upon or nacsssary for corr:pl~t: execution of :rork h~rain described or sho~~m on pl:~ns, is to be the beet of its oevsrc,l kinds, c~nd no for ;rno,r. or cuperin- terldan.t ahwll be errlployed -,rho has not hr~~.d thorough ex- perience on this kind of work. If ..any person ernplcyed by the Contractor cn this .pork shall b~ incorr~patent or di:,ord~rly, h~ shall, upon the raquiaitic.n ~f the Engina:;r, be irnr~:::diataly diacha,rged and each par3on Uhall nc•t ba again amploy~d upon thin ~rork. TIIIiE OF COd1PLETI0I1: 35 . All :cork provided for ire this cart ract shall ba fully corr.pl.;tad by ~~r~ 2~/~.2;~• LIC'UIDATED DAI,IAGES: 36. Should the ~,ork rartitiin uncorr.pl-cted at ~ha data epacifiad it is ~::utually _tigreed th:~t ~~,5.-per day shall b~e rtain:.d 'fir cosh day beyond swirl data, not includir_o Surua, s ^n1 leg~.l holidc,ys. This i3 for liquid~.te~i da,r:ag;~s ^~~Zd shah cover the s,aaitiona.l cost of engineering, in^pectien, tog~thcr ',Tith all other cysts incurred by failures to eompl~ta the ~JOrk in the tir:a specified. ABA'_•1DON1FEi~TT OF COIyTRACT j7. If the -york urdar this cor_tr~~,ct shall be a,ba~ndonad, ~ or if th ~. contract be aa3lgnad otharT~ri3e tha,r~ herein specified, or if at ar~y t irria the Engineer and Oc~ner shall b;; of the opinion th_~t the ,~rork is unnecessarily and unraa,son:~bly ualayed, so that the Contra,ctcr is wilfully violating ~.ny of the conditions of the contract, 7 c,r is nct :;xocutirg .~:~i.~ -;ork in g~~~~ f ith, cr iU nct L:a,king such progros:~ in ita axocuticn ~~:~ tc inaic Ito its cor.:plsticn ~.rithin tho tii::. raquira~i, thou the Ownor ahall ha.vo th~o power a,n.~ right t o notify tho Contractor to aiscontinuo =~11 ~rork un3or the contr.a,ct, a,n.i h:-iv.; the po:~ar to cor':ploto 3ar..o by contract cr ethor~i3o, ~ a,nu to use such ii:;pl~i:7onts, tools anti ia~~tcria.l© a,s r..ay ba nooossary to coi:.ploto th:~ •~rorlc. All such tools, z::atorials ana labor shall bs charged to tho account of the Contractor a,n:1 hs shall bo crociitad a,t the contract pric.; for ~ 11 ~.rork ao cor:,pl~t~d. Any balanc~ 1u~ the Contractor upon co:.:pl~tion of the ~ntira ~rork by the O~~rlor shall be turn~~. over to him, but shoull there not bo enough i::on~~y to complete the '.•rork, the deficit shall b~ paid to the 0•:rn~or by the Contr:~ctor's Surety. 3~. Neither an zxtanaion of tirno beyond that fixed in th; contract for thy, cor.:pletion of the Mork, i~rhich can only bo grc,ntad in :~riting by tho Owner, nor the accapt- a.nco of any part of thL ~~crk called for by this contract, srla,ll be ds~smea a ~~aivar by tho O~~ner of his right to abroga,ta th•a contract for abnadenr::ent or delay in the r_ann~r provided for in those ;p~cificationa. PAY~:~EI~TTS: 39. The Contractor shall be paid monthly on estimates of ~rork completed as determined by the Engineer; said estimate to be paid on or about the tenth of each month, ten por cent of oach estimate being; yvitY?held until com- pl~tion and accep~anca by the Owner as provided for by law. No mat~,rials axcopt r :inforcing bars s,nd struct- ural steol will bo paid for -.u1ti1 incorporated in the ~~ork. Tho Contractor shall accept the compensation as horain provided, as full payinant for furnishing all materials, labor, tools and ~quipm~~nt and for. perform- ing all ~~ork under th-:; contract; also for all loss or damage arising fror_7 the nature of th~ ~:~rork, or from the action of thy; al~rn~nts, or for any unforsaan difficult- ias which may ba a.zcount`.rad ~.uring tho prosecution of tho ~flork. 40. The Contractor shall porform such additional ~~ork of the sa,mo ;.;..moral charact or ^ a that .~ho~rJn or. plans a.s r~:ay bo ordered by tho Enginoar, and shall rac~iva compensation for th~..~ incr.,ao.,~ in quLntitias at the rats n~.rnod in the proposal. I'or ~~ny alterations, chwngas or modifications of th~ construction, resulting in the dacrea,sc of th ~ total quint it i;;s in the atructur2, the doductiona to ba m^do from th:; contrast shall ba a,t the r~tos nan:;;d ir. the origin~.l proposal for samo classes of ~rork, loss t:aant;r por csnt, :~rhich shall b-o a,llowad for ov-~rh~wd ~xp~n~~s and profit. r COPdTrACTOR.'S PLANS: 41. Ail detail drawings of atruet~.ral steal, falsor~ork, centrs, •atc. , '~+hicr ~~r~ to b•~ furnish--~d~:by the Contractor to thy: Engineer, must ba o,pprov:;d 'oy hi::: b:for.: r,c.tor- ials are ordered or ~Lny .7ork Bono. This approval of plans shall not raliov~ th~ Cc~ltra,ctor from his r~ spons-- ibility for the cor.-^.;ctness of those plans. All such plans rruat b-~ furnichod to th~s Erginoer in triplicc.te. BUILDINGS: 42. Tho Contractor shall provide tompora,ry buildings for the stor:~,go of c~rnant, tools, etc., t SANITARY CONVENIENCES: 43. DTeoeesary sanitary conv~~nianc s for the use of all arriployees on the ^,~ork, properly s~cludad, shall ba conctructod and maintained by the Contractor, and their exclusive uao strictly enforced. Those conveniences srlall bo subject tc the rules s,nd regulations of the Bos.rd of Health . EXCAVATION: 4~-. The Contrcctor shall r:;r~cve ~•nd excavate all rr~at- erials ~~~ithout cla•ssificatiar.s, necessary for the com- plot-.: constructior_ of tY~e tiTOrk to the depths shop°rn on plans, unless otharteiBe ordered. All rr:at~riala ~;xcavat- cd shall ba placed :~rh~wre they ~,r.: wvail::.bla for back-- filling. If not used for this purpose, they sha•11 be disposed of by the Contractor at his otivr~ exper~a~. Ha shall do s,ll necessary pumping, bwiling, constructing of cofferdams or other devic~s, ar~d supply all tools and rr:a,er~in~ry to properly ~c the ~~~~ork. V~hen quicksand, running sand cr other troa,crlerous mat .trials are en- cour_t ared, th~o ~~ork shall ba proa~ecuted ~~rith the utmost aispa,tch, ~ nd cortinuad day end night if so directed by tn.e Engineer. 45. Excavations ~aill not b~ required to go more than ttvelvo inches into solid rock, excepting in the c~~se of abutments for arch bridges, ~~lh~re such rock is high- er at the frcrt that a.t the back, ~~h~re it shall gc farther into Lock, the ~;Thole foundation being roughly st epp od up t o~yrard back t o forma akowback. SHORIiQG: 46. The Contractor shall properly shore all excavations, so that there Tray ba no damages to the work or existing roadways, embankments or buildings, occasioned by caving. FOUNDATIONS: • ~+7. Concrete shall not be placed in foundations until sa.rna have bean approved as satisfactory by the Engineer. They shall be kept free of ~:Jatar and mud during the placing of the concrete. 9 REINFORCING STEEL: 4~, All reinforcing bars ~a.ll be ;loforrnod except size thre.;~:si~hts of an inch and under. All bars shall be of Intarmedi~te Gra,d.~ Staol, r:,s,dc by the Open-Hearth ~ Proc:;as. TY:~y Uhall b ~ subj ~~ct to the Standard Ra- quir~z~.,nt3 `fi~i Tosta of the Amorica,n Socioty for T st- ing lRateria.ls. Thuy shall ba of sectional ar~oa3 ~quival~nt to those shorn on Plano, a,nd care 3ha11 bo taken to pla~o there: iz~ the ax;act position ahotiYn. VYh~rw~r splicos occur, '~ la.p of forty a.it~A~et~rs shall bo pro- vided. Tho roinforcornont Uhall bo kept; fr~~ fro~~ girt, oil, paint, gro~.a~o, l.:ill ;cal-~ or loos3 rnUt. khan roc-.:iv:,d on th~ work, it 3ha11 bo :stored c:~,r-ofully a.nd protoctod fron^, the weather until izsad. If required by the Engineer, it eh:zll ba given a coat of Pura ear:,~nt paint.. This shall bo dons by r..ixir. c~ii~ant :rith -.rator and sprinkling th:; ateYl :tith the resultant mixture. CONCRETE: fig. Concrete shall ba divici~d into three classes, and kno~.7n as A, B, and C. Tho proportions of fine and coarse agregate specified r.~ay be varied slightly by the Engineer in order to t:,aka a concrete of r::axi~~ur,, ~ten:~fty and strength, but tl~a p~oportiona of eo:r,ar~t to total aggregate shall not bo changed unless a ahar~e to or an allo.ranc~ to the Ot~cnar a,t unit prices bo i..ado. 50. Clans A concrete shall bo cor:posad of ono part Portland c~i:..~nt, two parts sand :end throe parts coarse a; ;regato. 51. Ciasa B ccncroto shall b.~ cor::posed of ono part Portl~d Cor..ant, tXp parts card and four parts coarse a;ar~;;at::. 5z. Class C con.cr:,to shall bo cor.:posed of one part Portland ca::ont, taro and one-half parts sand and five parts coarse agr.~~at~. 53. Un1esU othar~ria:; indic~~ted on pla~na, theta class®s of cover et e shall ba u.oed as f ollo~rs Class A concr~.tc shall ba used in road-,zay paving slab. Class B concrete shall be used in 3uparstructura, parapets, balustrades, arch rims and spandrels. Class C.. concrete shall ba used for pier,a, abut rnont s, ~qin:; ~~7a,lls and footings. CE'P~IENT: 5~-. All canant shall be Ar.:erican Portland of a ;gall kno~~n and tri°d brand, which shall be plainly narked Frith the brava. and na.rna of the raa,unfacturer. It shall ,, 10 b~ p ~ckoc, in cloth or canvas b_~,~s an~i 3h:z11 r~i ;h 9~+ pouna:~ nit to the ba--°. Co...~nt oha.ll satisfy th:,, Sta.nd-- ard Sp~cific.~tians for Portl:~n~t C.:~:..~rt of the Ar..orican Society for Testin %4a,t~rials, kno~,rn as the Ai:.orican Stand-~.rd, adopted ~~I-.rch 31, 1922. CELITE: j5. Throe poundo of "Ca7.ita", or equal, shall ba eased to oa.ch ba~; of c3~.ant used in each batch. Calit~:: '~7i11 ba that ~zanufacturad by the Calit~~ Products Coi..pany of New York City. FINE AGGREGATE 56. Sand for fins a~;~re;~ate shall consist of clean, hard, durably, uncoatLd particles, Eras frou: lur::pa of clay, soft or flaky r~atarial, loam: anti or ;snit :attar. It shall be vrall screened and ~Tradau froi.. fin3 to coarse. Not ~:ora than f ivy pax cant (5~) shall pave through. a atanaard 3cr;;an having, one hundred taashaa to the lineal. inch and aha,ll pc.aa throuh a screen having one--quarter inch ~.oshos. It aha~ll not contain i::ora than three par cant (310) of organic L'lattar. A;;:;r8~a.t°3 subj aotad to the c:;lor tact for organic ir.:puritias a,n~t prclucing a color in the scdiur.~. hydroxide solution ;ia.rkar t~~n the standard color- shall be rejected, unles.~ subsequent ~:ortar taste or concrete strength teats indicate them to be suitable for use'. All sands shall bs frequently tested in the field by the standard colorimetric, screen and sadir;:entation tests. 57. The fins a,ggre~;ate, ~~rhen subj acted to the mortar staength host, shall have a, tensile or conprisaive str:;n,th, at the ,~gv of aev•on a,nd t~~ranty--ai.3ht days, of not lass than that ~evalopad by most?.r of the sa,~:e con.. sistency c.nd ~~roportions, r.:a.da of the sa,r~e esr:ont ahu s~tanaard Ottawa ean~.. COARSE AGGREGATE: 5~. The coarse aggregate for concrete shall consist of crushed stony ox gr.v~l or air cooled bleat furnace slag, h~.ving hard strong, durable particles free from injurious amounts of soft, friable, elongated or lam- inated pieces, alk~.li, organic or other rlarmful mattar. The use of slag Hill ba permitted only when expressly noted on plans. 59• For Class A and Class B concrete the coarse aggra-- gate shall be graded uniformly d'rom 12 to i inch except in the railings ~•~vhora it shall gr:~da from 4" to 4". 60. For Classes concrete, the coarse aggregate shall ba uniformly graded from 22" to ~,". 11 WATER: 61. Water used in mixing concr.;t~ shall b~ cl:,~ax and fr~~~ from oil, acid, alkali, organic matter or othor ~ d~l~t~rious subatanc:;s. It shall b~ equal in all phys- ical and chemical prop~rti:.~s to potable ti~titar. The mixer used must hava an attachment whereby the tiTater used in each batch may b-~ properly regulated. CONSISTENCY: 62. Only sufficient wa,t~r shall be added to make the concrote ~,rorkabla. In reinforced Mork the mixture shall be such a.s to flour sluggishly ~7han worked. The slump tact shall be applied fraqu~ntly and the amount of water used in vaeh batch ragulat~d accordingly. In g~n~r al, the amount of -crater used par bc,g of cement 3ha~11 conform closely to that r~eommendad by the Portland Carn~nt Assoc. UIIXING AND PLACING: 6~. Each batch of concrata shall bo :Taxed for a,t 1=~ast 12 minutes aftsr all the ingredients hava bean pl:zcad in the rnix~r. 6~+. The proportions specified shall be cs,rafully ~~sas- urtid by volume to insure uniformity of mix at all times. The contractor shall provide such davica~a for the accur- ate r~aasurarrient of aggregates as may be required by the Engineer. The Contractor shall use Such means as r,~ay b:, approved to determine the ar.~~ount of bulking of the sand due to the varying ri~oistura content. A bag of c~rr.ant shall ba assumed as one cubic foot and shall be th.:: unit of measure. Wha~l barro~> ~i:aa,aurements will not be permitted unless struck off by a straight ,;dga. The fine and coarse aggregates shall b~ r~.asurad cepar- ataly as loosely thro~7n into the raea$uring receptacles. 65. Concrats shall be deposited in the f orrus as quickly as possible after raraoval fron the r:.ixar and shall be thoroughly compacted by ,corking ~zith a straight spade until all concrata has taken its proper plyca by gravity. It shall ba deposited in ~orizonta.l layers of uniforr,. thickness and shall not ba dropped from: a heighth. Each section, ~~hen started, shall ba poured continuously co that it shall be r..onolithi~ b~twaan construction joints. 66. When it is necessary to pls.ca concrata on concretes that is eat or partly set, the surface shall be broken back to firrr material by picking and the fresh surface thoroughly cleaned. This surface shall then be eatur- ~ .tad ti~rith water and painted with a neat eamant grout of the consistency of thick crec,m. 67. No concrete shall be poured in spandrel 1~a,llo until after the cantsrs hava bean struck. 12 E~BEDliED STONE : 6S, In f~;~~tin; conc.r.;tc, to th.: cxt :nt of 4 cf the be sufficiently :;~p:~rat•ed crate ~.rld ~_.lzst not be ;yet fa c~ of the ;+or.k, Th~ st and ~.,~ttcd bafor:; pl~~ccd. large stones racy be cr.rbcdded v~lur.:c. Thy stones ~:ust to be :,each curround.~d b~- con- clocer than ;;ix inches to any snea ~.rast be thorouhly clea~ncd T_~'OR'::5: 6g, Substantial, wn;~i~-:lding, ::lortar-tiht forma shall be used, ~:~ade of tr a exact dir::ansicns of the structure to be built. The fr:~~~es or ctu.~.uin~; ~.ust b~~ properly placed, all tied tc?~ather by r.: e,a.nU cf mire or rods. Thy, sh:cting shall be sound, str~.i ;ht planking, planed sr.:coth, of uniforr.: thickness, t'rla ends and ad gas being accurately r,~atchau and butted together tigith no offsets or operir_gs, ao that the fa,c, of the ooncratc shall not sho:~ a,rltr irr,pras3ions of the ;;outs. She~,tin~ mall ba ttiell oiled b:,fore acing and ;hall be thoroughly cleaned before ~,,a,in bain~; used. Suitabl:: r_.olair_gs shall be used, 4r~:ara a,nd aN sho~~rn on ~%' a~ns, to raur_3 or bevel corners. 70. T~~~ forms and false;7ork sral~_ be carefully assigned to carry the d,ad leads they a,r~e called upon to carry. For this p~arpose, she concrete shall ba treated as a liquid Y.-sighing 1'Ta pounds per cuo~.c foot for vertical loads aild 7~+ pounds per cubic foot for horizontal press- ures. Tr_a Cortracyor shall be entirely responsible for th ~ design of forms and fa.1s:,~~~JOrk, as the finished stru:,turc must conform absolutely tc t~z~: finished lines a.nci grades shov,~n on plans. 71. Plans for c~:~tcring of ~.rchas must b:: aubr.:itted to the Engineer for approval. It ~r_all be frar::ed for an area cf ri ~~• ali~;htly gr~ tar than that shoNn or. plane, ~.U a,n w11o-~:_.~nca for s ~+~le:n;nt o*_' centering. Proper provi:~icne shall b~ mad:; in the cantering to fa,cilita,te a gr:~daal ~.nd ur~iforrr. lc~~rer ins of sarr,a. In fa.vc~ra,bl~ tr~~athar, cent ors s':~wli not be struck for at l~~~st ''b days., I_~ unfa,vora.ble ~tea,~har, trlia Lima shall ba increaseQ wa d~~~mad naces~ary by th.; ~'ngin~aer. CUP~lT?G CUd~'Ct~~~TE 72. Careful ~•tt-~ntion shall ot~ giv~~rl to ka~p ~~11 can-- crate ~~7a11 protect ad. from the sur. ala.ring dry and hot -~rcathar. Railir:gs,floor slabs, tc,, shwil b.; kept ~ cov~.red and wet for at least ore we ~.k. RE~ZOVAL OF FOP~:S 73, Forma on balustrades, ra,ilir_gs, parapet ar:d apwndrel walls -wh_ch do not carry any loads :,ha.11 be removed in not less than 12 nor morn than 4& hov.ra ~ftar placing concrets. Forr.~:s under slabs, beams or ~irdars shall 13, generally be kept in place oae day for each foot of span, unless otherwise directed by the Engineer. FINISHING CO~iCRETE: 7~+. ~s soon as the forms are removed, all holes or porous laces shall be filled. All wires or rods shall be cut ~~ below the surface and the ends covered Frith courant mor- tar of the same mix as the main body of the work. All exposed faces of the work shall be rubbed V~ith carborundum stones until all form marks ara removed. All Surfaces must be smooth and uniform in color and appearance. STRUCTURAL AND RIVET STEEL: 75. A11 structural and rivet steal shall conform to th.a requirements of the ~;andard Specifications for Struct- ural Steal. for E~ridges, Serial Designation A~'-2~, of the American S_ociaty for Testing Materials, crith subsequent amendments and additions thereto, adopted by the Society. Test specimens shall show a fracture having a silky or fines granular structure throughout ^ith a bluish gray or Bova eolo~,, and shall be entirely free from granular, black and brilliant specks. Finished rolled material shall be free from cracks, flags, injurious seams, laps, blisters, ragged and imperfect edges and other defe~tsa it shall have a smooth, uniform finish, and shall be straightened in the mill before shipment. It shall he free from loose mill scale, rust pits, or other d~facts affecting its strength and durtibility. STRUCTURAL STEEL STORAGE: 76. Structural material dalivaxed at the bridge shop raeaiving yard shall 1~e stored on platf orms, skids or other supports and shall be protected a,s far as possible from surface dat~rioration by exposure to conditions producing rust-. Zt shall be kept free from accumulations of dirt, oil or other f oeeign matter. Fabricated material stored prior to shipment,, shall be subject to the same conditions of storing. STRAIGHTENING MATERIAL:' 77. All deformed structural mataria,l shall be properly straight8ned by methods tiQhich ara non-injurious, prior to being laid off, punehad or otherwise v~orked in the shop. Sharp kinks and bends shall ~ aa~aasa for rejection. WORKMANSHIP AND FINISH: ~ 7S. The corkmanship and finish shall be first class and equal to the best practi~a in modern bridge shops. Shearing and chipping shall ba neatly and aecuratagy done a,nd all portions of thQ cork exposed to v~iaw shall be neatly finish©d. 1~ CHANGES AND SUBSTITUTIONS: 79. No changoa shall bo r~ada in c,ny dra~ring aftor it has boon approved excopt by the consont or direction of tho En~;inec.r in ;~ri.ting. S1~batitutionU of soctior_s hav- ~ ing diff~rant d~.r_~ersione than those shown on plans shall be r:aclo only ^ha-: a-~,~roved ir. ~.r.t ir_g bar tze Er~gj.near. ffTVET HOLES: ~0. '~~~Yen gencra~l raarlin~ is not re~twt.l~ed, bolos in rlc'~.t~r- ial 4" or ":.abs in thick ~CiJJ riay bo pu~iched full size. Holes in material more than 4" in th~.eknoss shall be sub- puneh~d a nd rosined, or drilled froi the soli3. PUNCHED HOLES: ~1. F1~,11-size .~~ar~ch~d bolas sha,11 ba 1;16"' larger z than the norz9.na'1 a.=.ar.° _>t~ r of th ~ r~.ve•u ~ The -diar::eter of the die ahe.ll nos ex„a~d the dic~r_~ata:r of tho lunch by ~.orc than 3i3~" , Holes ryas ~- be e].aar. e~.t, w:~.t:~.aut torn or ragged-edgas~ If any bolas ~ZU~t be cn].e,r;el to wdriit the rivets, thsy sha,~!.r ba raar~ed. 'f'ze punching of bolas rn:.st ba so aecurwtaly cic?1c; that, after a,sser~?ling the cor.,ponant parts of a ~:er.:be:c;, a cylindrical pin, 1/S'" sr.~allar than the nor.:inal dia~:~:;tar of the punched hole, may be passed throu.g~n at leasj; 75 0l any group of l0U contiguous bolas in the saga surface, or in like proportion for any group of bolas. If this require~iants is not fulfille3, the badly punched pieca¢ ohall be rejected. IIf any holes gill not pass a pin 3/1.6"~ sr.:allar than the nominal diara- ater of the punched hole, thiU shall ba cause for raject- i on . DRILLED HOLES: ~~. Drilled bolas shall bo 1/16"' ls.rgar than the nominal 3ie,r::atar of the rivet. Burr3-on tho outside surfaces shall ba re.:~ovcd TJith a tool produc~;ng a 1/16" fillot around the ad~a of the hole. - SU&-PUNCHED AldD REt1MED ~iOLES-: ~3. Sub--punched and reamed holes for rivatshavina diam- eters grea,tar than 4" shall be punched 3/16'x' smaller than the norlinal ~liamatar of the rivet, and for rivets having "' or lass diar^~aters, the holes shall ba punched 1/16"' 3;:aller than the nor.~inal aiar~eter of the rivet. T}~e punch and die s'rlall have the sar~a rolative sizes as specified for full sized punched bolas. After, punching, the hope shall be rearled to a diameter 1/16" lamer than the nom- inal diameter of the rivet. Burs resulting, fron rearaing ~ shall ba renovad with a tool producing a 1/16" fillet around the aclge of the hole. ffeamir~g of r~,vet bolas shall be done Frith twist drills or with short taper raamexs. Reapers, preferably, shall not ba directed by hand. No oil or grease shall be used as a lubricants. Reamod om 3ri113d holds shall be cylindrieal and perpendicular to 15 th3 raanber anfl their accuracy shall ba the sane as sped- fi~;d for punched holes except the t, a,ftar frilling or rearing, ~5 of any group of 100 contiguous holds in the saran surface, or in a like proportion for any roup of bolas, shall not shoe an offaat greater than 1~3~"' ba- tcreen adjacent thickn3sses of notal. - .. DRIFTING OF HOLES: ~4. The drifting c~ona Suring assembling shall ba only such as to bring the parts into position, ana not suffic- ient to enlarge the holes or distort the Total. SHOP ASSEI~BLING: ~5. All surfaces of metal to be in corrtact when a33embled shall ba carefully painted one coat of the paint apeei- f ied for the chop coat . Thy painr shall b~ appli.;d upon surfaces frea fror.: Girt, loo3a mill scaly or other foreign matter and the parts shall be assembled t~hile the paint is plastic. Thy component parts of a built manbar shall be assarablad, drift pinned to prcvcnt latara,l novora~:nt, and firmly bolted to drag the parts into sloes contact before reaming, drilling or riveting is 'cagun. A3sa~lbled parts shall be taken apart, if necessary, for the removal of burrs and shavings produced by a raamin~ operation. The member shall be frea from tcrists, bands or other de- f orcations. Preparatory to shop riveting, full sized punched material, the rivet bolas shall ba cleared for the admission of rivets by rsa~iing. End eonn~ction angles, stiffener angles, etc., shall ba carefully ad~ustad to correct locations and rigidly bolted, clru:pad or otharstise firmly bald in p~aee until riveted. RIVETS.: ~6. The diameter of rivets indicated upon plans shall be understood to mean their 11a~~ater bafora heating. Hflads of 1riv~n rivets shall b~ of approved shape, concentric with the shanks, trod to size, full, neatly forned, free from fins and in full contact with the surfaea of the mem- ber. ~7. Field rivets, for snob size and length, shall be supplied in excess of the actual nuMber to ba driven to provide for losses due to misuse, ir::propar driving or other continercies. Rivets shall be free from furnace scale on their shanks ant from fin3 on the under aids of the machine f orr~ed bonds. RIVETING: ~ ~S. Rivets shall 'oe heated uniforMly to a li<3ht cherry red color ana shall be driven while hot. The heating of the points of the rivets more than the raraainder trill not ba permitted. QVhan ready for driving, they shall ba frea from $lag, scaly and other adhering natter and Shan 3rivan they shall coraplately fill the holes. Burned, burred or 16 others~ise defective rivets, or rivata which throt~ off sparks ~,rhan taken frorl the forge, shall not be driven. L.ooae, burned, badly formed qr othercrisa dafzetiva rivets shall b© cut out. Caulkin and racupNin~ of rivet heads A gill not be allowed. In cutting out rivata, oars sha,11 ba taken not to injury the a~djacant metal. CounterainkinJ shall be neatly Bona and countersunk rivata shall complete- ly fill the holes. Shop rivata shall be driven by direst acting riveters mere practicable. The riveting machine shall retain the pre3sure for a short time after the up- setting is cor:~plete. Pneumatic hami:.era Shall beaused for field riveting. END CONNECTION ANGLES: 09. End connection anles of floor beams and stringera- shall ba flush ~7ith each other and accurately sat a3 to position and length of L~eraber. In general, and connection angles shall not ba finishad. Hos~aver, faulty assembling and riveting racy be oauae for requiring than to be ~zilled in tahich easy their thickneac shall b3 reduced not to exP Dead 1/16"', nor shall their rivet b.;arin~ value ba re- duced below design raquire~~ants. WEB PLATES.: 90. web plates of girders having no cover plates racy be datailae~ with tho top edge of the t7~b flush v~ith the bac]a~: of the flange angles. Any portion of the plate pro j ectzing beyond the angles s~}all be chihl~a3 flush with the backs of the angles. Wieb pla,tos of girders having cover plates r..ay be 2"' leas in ;~idth than the 1i3tance back to back of flange angles. When spliacd, not more than ~%"' clearance between ands of platys gill ba allo~cd, - VVEB STIFFENERS: 91. End stiffener angles of girders and stiffener angles intended as supports for concentrated loads shall be milled or ground to Secure a uniform, even bearing against the flange angle a.. WEB SPLICES AND FILLERS: g2. Web aplica plates and fillers under atiffanars shall fit t~ithin 1/~'" at each and. MILL AND SHOP INSPECTION: 93. Tine Contractor shall give a~ipla notiea to the En~inaer of the beginning of crork at the mill and shop, so that inspection may be provided. No raatarial shall be rolled r or fabricated bef ore the Engineer has been notified where the orders have been placed. The Contra,etor shall furnish all facilities for inspection of raa.tarial any work~.anship in tho Hill and shop. Tha Engineer shall have thepow2r to ra j act natariala and work~~~,nahip which ao not fill the requirar~ents of these specifications. The Engineer sl~ll 17 be furnished with: copies in duplicate of mill orders and shipping statements. This inspection tirill be done by a teeing bureau selected by the Engineer, at the customary prices for such service and paid for by the Contractor. ERECTION: g4. All work of erection shall be subject to the inspect- ion of the Engineer crho shall ba given all facilities required for a thorough inspection of workmanship. Mater- ial and ti~ork not previously inspected will ba inspactad after its delivery to the side of the bridge. 95• All material shall be stored in such manner as to prevent deterioration by rust or loss of minor part a. No material shall be piled so as to rest on the ground or in crater, but must be placed on suitably skids or p~,atforms. g6. The field assembling of the eompon~nt part3 of the structure shall involve the use of methods and appliances not likely to produce ~:njury by trriating, banding ox othercrise deforming the mot al. No member slightly bent or trri st ed shall ba put in place until its defects era corrected, and members seriously damaged in handling shall ba rejected. T}xe straightening of bent edges of plates, angles and other shapes shall ba done by methods n-ot like- ly to produce fracture or other injury. The metal shall not be h~;ated unless permitted by the Engineer, in which case the heating shall not be to a h~ghLr temperature than that producing a dark cherry red color. After heat- ing, the metal shall be cooled as slocrly as possible. Following the completion of a straightening of a band or a buckle, the surfaces of the metal shall ba carefully inspected for evidence of insipient or other fractures. 97. All field connections shall be securely drift pinned and bolted before riveting. Important connections in girders, floor system, etc., shall have at least fifty per cent of the holes filled. An amply number of drift pins shall be used tonpravent slipping at joints. The. xesults obtained in the field assembling and riveting Of th© m~mber3 of the structure shall conform to the require- ments for shop assembling and riveting. Field rivets shall be inspactad and accepted baf era being painted. Fia1d riveting shall be done before the fa,lsework is re:~- moved, unless permission to the contrary is given by the Engineer. g~. Anchor bolt holes shall be drilled in correct loeat- ions vertically to the plane of the bridge seas, and the ~ anchor bolts set therein in Portland Cement mortar. The mortar shall consist of part Portland Cement to one part clean fine grained sand, mixed sufficiently wet to flow freely. Anchor bolts shall first ba dropped into the dry holes to assure their proper fitting after Batting. Tha hole shall be filled about ttco thirds with the mortar anti 1~ the bolts forced down by a uniform even pressure or by light blows with a hammer. 'Ifhe location of the anchor bolts in relation to the slotted holes in expansion shoes shall be varied with the prevailing temperature. The nuts on anchor bolts at the expansion ands of spans shall r permit the free movement of the span. 99• G~.rder shows shall have a full and uniform bearing upon the substructure masonry. Masonry baring plats shall not be placed upon the bridge 3aat areas of piezrs and abutmanta whicYr~ are improperly finished, deformed ar irregular. The shoes shall be rigidly and permanently located to correct alignments and elevations, PAINTING:~ 100. All structural steel work shall be painted w~,th three coats of paint. The first coat of paint is to ba applied immediately after the shop fabrication is oomplo$e, except that all surfa,c~s coming into contact are to be painted before being assembled. The second and third coats are to be applied after all erection is complete, except that immediately follo:~ing the field rivoting, the heads of field rivets, and all abrasions of the shop coat due to handling at the shop, shipment, erection, etc., and all field erection marks shall ba thoroughly covered c~ith one coat of shop paint and permitted to become thoroughly dry bofore the first field coat is applied. 101. Past shall be applied only when the air temperature is at or above ~+0 degrees F. It shall not be applied upon damp surfaces or upon metal containing frost; nor s7ra11 it be applied ethen the air is misty or otherwise, in the opinion of the Engineer, unsatisfactory for the work. No wide flat brushes shall be used. All brushes shall ba either round or oval in shape. The paint, when applied, shall be so manipulated under the bru3h as to produce a uniform, even coating in close contact with the metal or with previously applied paint. Paint shall be thoroughly stirred bell ore being removed from the con- tainers, and shall be kept stirred while being applied to keep the pigments in suspension. All painting shall be done in a neat and workmanlike manner. I~f necessary to thin paint in cool weather in order that it shall spread more freely, it shall be done by heating in hot avatar. PAINT: 102. The first coat of faint shall be red lead and the second and third coats Battle-Ship Gxay. It shall be bought from a reliable paint manufacturer and delivered ~ to the work i~r the original sealed packc.gas bearing h~:s name. Paint shall conform to the folloc~ing specifications; ~.ed LsaB Paint Composition: Pigment 62--660, Liquid 3~~3~a f 19 Pigmont; Red Lead 60~J Mag. Sal ~ ~~o Liquid: Linseed oil ~5fo, the rei~~ainder driQr, turpentine or r~ixtura thereof . Rattle--Whip Gray Paint t C:or~poaition! Pigment b~-66fo, Liquid ~~--3~0 Pigcaent: Load Carbonate 75`~ Zing Oxide 15~~ Msg. &ilicate 100 Liquid: Linseed oil S`O~o Pura turpentine 5~0 Yol. Spirts 5l~ Drier 51~ H-bat. Treat. Lin.5~a Coloring matter: Lamp Black. TESTS OF MATERIALS: 103. All cement, reinforcing steel and structural steel grill be tasted at the mills. The Contractor shall in- clude in his bid the cost of ouch tasty, crhich shall ba r~ada by a cor~r_:ercial laboratory to ha designated by, the Engineer. All other materials shall b~ tasted a3 deliv- ered on the crork. In the event that the suitability of any material depends upon t~Uts that should preferably be ~~ade by a laboratory, the Contractor shall meat the costa of such inspection. Copies of the reports of all taste Cade in the laboratory shall ba furnished to the Engineer in duplicate. CONCRETING IN COLD T1~ATHER: 104. No concrete shall ba placed in freezing creather ~rithout the con3ant of the Engineer, and in no case with- out taking proper precautions to prevent injury to the work. R'hen directed by the Engineer the Contractor ahail furnish sufficient canvas and fran3szork, or other type of housing, to anclos~ and protect the part of the structure under construction in such a way that the teraparature surrounding the fresh concrete will ba kept above 50 da- gr3es F. for a period of five days after the eoncr~te is placed. Sufficient heating apparatus such as stoves, sal- ar-,anders, or steam aquipcient, and fuel to furnish all ra- q~tired heat shn,ll be supplied. All crater used for ~:ixing concrete shall be heated to a temperature of at least 7.0 degrees F., but not over 150 degrees F. Aggrzgatea shall be heated either by steam or dry heat to a terpera- ture of at least 70:_but not over 150 degrees F. The heating apparatus shall be such as to heat the mass uni- f ormly and preclude the possibility of the oecuranca of hot spots which still burn the aaterial. 20 EXPANSION JOINTS: 105. Expansion joinr~ shall be provided in the structure of the siza3 and types indicated on the plans. f DRAINS: 106. Drains of the sizes and kinds indicated on the plans shc,11 ba furnishad and placed by the Contractor. EXISTING BRIDGE: 107. Travel is to ba maintained during the courao of corn struction of the new bridge by means of tho axiating bridge. The v7ork shall be so conducted as to not intar- f are Stith aar~e. NAME PLATE: lOS. The Contractor shall furnish and place a bronzy nee pla.ta of a design to be furnishad b ~ th° Engineer. Thy platy shall be approxi~;ataly 1~ by 2~ ~nchas and shall contain the names of the County Officials, Engineer and Contractor. FINISHING AND CLEAPIING: 109. Upon completion of the work, the E~.ontractor shall raraove all temporary work, surplus z~~aterial, rubbish, etc. from the vicinity of th3 crork, giving sar.:o a neat c.nd finished appearance. 21 PROPOSAL Date 192. Hoard o~' Go~~;issioners, ~ Qux:barland County, CL~,rlislei Penna. Gantla~an: h~r~by certify that have personally axaL~in~~d the location of the 7ork proposed '7ith ref~r~nce to the full extent and nature of sang, and that havo carefully axar~ired plan: and specifications. proposQ to furni3h all too13, r.~achinery, labor and .::atarial.s necessary and proper for the con3truct- ion eo~~platQ of four span steel plate girder bridge over ~onodoguinat Crank on ~tat3 Hih~ay Route 30 at .7e at Fair- ~ies~, C.ur.:barla,nd County, Penna. ~7ith all appurtenances in full accord~nca :pith plans and specifications hereto attach- ed for the sw~ of Dollars (~ ). propose that in the event of any changes, th~ resulting additions or deductions shall ba at the f olloning unit prices: Dry excavatior. (~~ )par c. y. iNet excavation (~$ __~l~er c.y. Class A concrete (~ )per c.y. Class B concrete (~ )per c~. Claae C concrete (~ )par c. y. Portland C~raant ( ~ )per bbl. ~ Rainf orcing steel (~ )par lb. Structural steal (~ )par lb. f 1.5 accor..p~iny this proposal :ith a ccrtifiad ch.;ck for-----------.-._.-.-_-_.-~------~ condition:;d upon accaptancV of th.~ contr~~,ct, if a,-: ~ a,r d:; d t o R~spactfully :~ub._~itted, Bidci.ar Addr~sa--------- ---- ~._- .