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Home My WebLink About1902 - Eckerts Bridge+~ .._ / // ~I'ECIPICATIOIt^; f~I' ^1i1~ .:.-::i:;tJCTU:..:, I'OR ECH~Iii'v 1;i•:I:iG% OV1sH ~CNi~ll~,~GuIIti.::i C,;,~.:~:ii, :i_.?~ii .: .:__:. :, l9 C, ;? . ,,,;~ The spans will be buy It as per the accom- panying stress diagrams. t~1.1 metal shall be ::teal, r!ade at works .-. establisheu reputation, anti 9$all confarr_: to the requir~=- !~ents of the ~neci"ica+.ion:s o° the .'.SSOCiRtion of Ameri- can :;teal 'anufacturer~=~' . 1111 works ,_.~._...~ ,.:<::_i.~ _i° ~+~ ,; _i.F,;3s, .,. c>; , - ing to the best modern practice. ;',11 lumber shall be of good duality, i reE rom all de_'ects which would impair its strength or c'.ur- ability. ~sefore leaving tie ,Bops, metal work shall receive one coat oP oxide paint. ':ll planed or turned surfaces shall receive a coat of white lead and. tallow. At'ter erection all metal shall receive one :o~et o1' oxide paint. Bids will be received up to 2 o'clock P. I~I~, august 7th, 1y02. I 1` ~~ ;;~._ ;Ie'IG ~:TICKS 'r'Or`i BnIDGr. OV:~K C011r7C^vUIil1~T CR,.I:K~ i~:: ~~n NE?rVI7.:.:, CU~;3.;:i~LARl„ CC'Ji1TY, P~'.:1'•':~Y7.VAtZI~,, 19C.2. 1~~SCKIPTT~';,. 'rie work to be done consists in so altering the present stone-pork that a llfl ,"oot clear span may be bui1L, replacing L'ne present 75 foot wooden span ~~ith a steel span, removing the earth anti stone-work uncler the new 118 foot si~an so as to leave a clear waterway, :'3.11- ing the abutments to the proposed grade, and com~~lettng the work in its entirety. ~XC:SVATIOiv.>. All excavations for the work he .rein contem- lsted slzal:~ be ~^ade as cxirected by the ~~ommissioner5, or ;heir ::ngineer, and the :r:aterial excavated front the ,'c,un- lation nit3 shall be deposited within the tying walk s. 11 bailing, pumping, l'~c. , incident to the work shall be done by the Contractor, ~r~le lump price Paid shall be in full compensation therefor. :'ounciatian pit s:~all be excavated to the depth required by the Comr!issic•n- ers, and shall be made smooth and even at the bottom to re- ceive the foundation, whetizer of stone or of timber. If earth of sufficient firmness to build upon cannot be ob- tained at a reasonable depth, "oundations of ti*^ber shall be constructed as directeG_ ., ~e Commissioners. Timber and plank fou~da~ions will be TMade from sound o,.h ar other timber approved by the Commissioners, or their ::ngineer, and in strict accordance with Plans and specifications i'urn- ish®d. If in t, he judgment of the orimis5ioners, or their ::ngineer, the bottom for foundation is not sufficiently sol- m plan, then the -ontractor s~zall clj SuCil depth as snali t~P satis~ ~~etary, rnc:i the additi k so required shall be paid for as extra ~.•rork at cc z allo~~ance of 1(~ per cent for profit on ""orce account. 1L1C masonry .~ 11.1 q6 range worx, Or 1n proK- en courses, as !•!~.~ best suit the stone that is used. '~ he face stoney to be accurately jointed and betided. `lhe stretchers in the face to have beds of at least 16 inches ancA in no case less bed than rise, And to be not less than 3 feet long, measured in the face of the wall. Tre headers shall have not less than 15 inches length of face, ~=nd shall extend at least 3 feet into the wall. There s:iall be not less than one header to every 5 feet of face, measur. ed fr. om center to center, and so Grranged that a header in a sur,er- ior course shall be placed between two headers in the co;.~rse be?ow. i+o course to be less than 12 inches in thickness. The backing; stone shall be of large size and have Parallel be C.r_;. '.':~e backing stone shall be laid so as to break joint wit"r: one Another, and ighen the thickness of the wall exceeds three and one-half (3-1~2) feet, headers of the same dimen- sions as those in the face, ~.'1c1 ~ n eo~ual number, grill be placed in the back oi' the wall. , ~.n outside stones to be set in mortar, anti the whole thorough],y grouted. The win;;; •~;alls -.i11 ~~c r-.~-~~~lr; >ork, ^i'-~fit~r coursed or uncoursed, a~, ,~ ~...~t :~.ai~. ~i~~, torte t:~~.` is used, laid in cement mortar. The stone shall be large, containing generAlly not less than 4cubic feet, and no stone less L'nan g inches in thickness shall be used, unlesa as a"closer" or by Permission of the Commissioners, or for filling un the inte~^~:tices between the large blocks in the heart of the ~a•all. .o stone shall measure less than 12 inches in its least horizontal dimension, nor hive les, bed than ris ~. .°.t; least one-fourth of the stones shall be zeaclers, evrlily distributed throughout and extending' yell Lnto the •.•,alls, The .stone s}iall be roughly squared on reds, joints and faces, ~°.n« laid so as to break joints in adjacent courses. fill spaces be r,~ceen stones in heart Ce~.~ of wall shall be flushed ti~rith ~oc~cl~r^~rtar, then packed ful] of spells and grouted. ;~;o sp~:11,. ;: x_11 be allo,.eci in the beds. orner stones must be 1ar6e, selected stones, and steal-! be n~:atly pitched to true lines and laid on hammer dresse3 weds, anti be drat lace at the rinc;les. The abutments will be covered ~•titn a regular C`.~?.:7">~ ~ .>1:U;lE' i1!~F ICiS 1;''1~t:1 24 inches :ric`.e, 'i;;~ nOt 1e3s titan 12 inches thick, tox~med the Bridge ;eat. ~:ach stone shall have bens anti joints cut true to the square, and sizall be laid so as to form a not greater than none-half inch joint throughout, and breaking joints in adjacent aou-rses. File stones upon which the chords rest shall not be less than three (31 feet long, 2 feel ~~ri<Ie, rind 12 inches thick. ~' The vying ;.ells n~=11~1bF c.zPpecl with utane GvKdZ (,;r,~~,~ covering the entire wall. These a cones shall be roug; ~:~~°~ hammer dressed cn top and bed and their outer faces pitch- es: to true lines, anti be not less than 6 inches thick. Joints must be laced at least 4 inches inward frog; face of wa~.1.. y he 'oundat ion courses shall consist of large flat stc ~ . ~;, ~:ot less than 12 inches thick, and extending through t~zt~ •,~all 'hen the width is less than 4 feet, tell stones uses in masonry must be sound, durable, of good sh:,,~,ae, of fitlitable ciir^enSions, and of quality approved by the Cot~~:issioners, .;11 sand used in mortar Must be clean, and free fPom loam anti vegetable ~att,er. A11 outside joints ~~ill be raked out to a [7fJFlti6%,~~ CA67JT ~}Jriu depth :~2}']~~p17~E<; }~ln.,UiY~}JC:i7~ ..~ .... nT rtti r i'lans, tic. , :~, ~ 11 be furnished, giving ctir"en- lions of the vrork, ztihich must be strictly cotr.plied ~nith. ThP contract price paid for the masonry shall include tho furnishing of all labor, tools and m^tFr'~~~ls, scar°olding,a'ici centering, Fnd. Lhe cost of excavatint; for fourc;ations, _Lnclu~,.'Lr_~ coffer dams, bailing, pum;?ing, and all expenses attending the delivery of materials, and all risks from floods or otherwise. the cement will be ::'urni ~%ieci by tYie ~:;~:.: ~ ~is- sinners at thc: nearest i~:ilroad .station to the vrork, free of cost, v:t~ere the Contractor shall r. eceive it and haul it to the bridge site, and keep dry ultil urged. A :;arble date stone shall be bi.ilt in one of the parapet ttialls, facing the roadway, with name of bridge, cltcte of repair. s, anti nat^es of r:ommissioner.s and Clerk, neo.t- ly cut thereon. cement and tiro parts clean, sharp sand, mixed in small quan- tities and applied when fresh. fiidders are requested to make turn proposals- one to include 120 x 16 and 78 x 16 super-structure complete, and the removal oi' causeway between abutments ~1 and t~2, plac- ing same between wing walls for filling. The new abutments ~1 and r~2, and the necessary '=ping v%alls for s~r:e, including the repairing and raising of old wings and parapet walls, as per plans and specifications herewith. Proposal ~~2 shall include all of jrl, and in addition the tearing down and re- building win; and parapet malls on the tzp-stream side of bridge at abutments tt3 and 1`4; also the extending of abutments ~3 and rf4, as per dotted lines on elan, and such alterations and addi- tions as may pe necessary to make a complete and satisfactory ~ O D.