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Home My WebLink About1889 - Etters & Shanklin Bridge (3) ~R~~~& BO pOF~' P~P~ RON R ~°z ,. ~U~ cATe~ R~NNERS• 1~o the Honorac~~e .~~~~.:°~: ~~: ._ - ~._ _.....of `,c• - ._ -__ Toti-n7 0:"' .County of__ .~t-~-~ ~ ~~ti~~~ ~~ r State of -- _ 0<c~yz ~~ -~ a,,~, _ _ _ _ _ . Gentlemen We pro,oose to furnish al's mc.tez _=<<.' u:~c erect cozzzz~_'ete and read for trave_' the superstructure of ~z Wrought Iron Truss Bridge, accora':zzg to the annexed specificatloz~s az~d a'rav-'n~~-a, fozy the p: _=ce.s ~~covf speclf~ed. Should the above proposal be accepted, we wi11 enter into a contract :~T=th your Honorabl e Boa'y; said contract to be annexed and to form part of ~~ese specs fl ca tl o ~, s. Very truly, ~ - 1 Patented April z6, i878, and pending. ;;;~~~ ; ~~RL,I~I=.. ~~R.OJ~ ~ ~~~ ~,I~G~~~O. EAST BERLIN, CONN. S~ecifieations for a ~rou~ht Iron Truss ~rid~e. LOCATED ~.. ~•- General Extreme len th /~ `J feet. Number of S ans ~ _.-. Clear length of each Span, ~SS- feet. Bridge Dimensions. g ~ / p , ..._ .- -_ - y ./ C1~.. feet wide in the clear, and.. _ D _ _ walk each.......-...... feet wide in the clear. to have ................ roadwa Trusses to be_~~._feet high and to consist of..l.~... panels. IRON WORK. Top Chord. The top chord shall be constructed of two._~X~ inch-~~~,c~t_ channel bars and top plate ~(c _._ inches ' ~/f united by a mch pitch, and on the bottom by lattice bars with one ~ /. ..--...-.._....... 1 inch rivets `3.~_~ ' wtde_.-x-_1. !J ~ inch rivet in each end. Chord to be re-inforced and accurately drilled at eac~h~anel point for pin holes. ~ ~2 Lower Chord. The Lower Chord shall be composed of ~-----.chord bars `3.-2-.-x 1/...made from refined iron connected at each panel point and ~at/end post by pins, which latter shall be turned to exact size to fit drilled pin holes in enlarged head of chord bars.. 'Y~-4-: ~,~~ ~ '/ _........... End Post. ~ The End Post shall be composd of two._~x~mch_~......:.. -e.._..:.. channel bars united on the face side by ~ -' _1_.__~~..X._~~_--~_--~,-_-----------------The opposite flanges of channels shall be united by lattice bars same as top chord. The bed plate shall be..-../1-......inch thick, securely riveted to end post by wrought iron angle brackets. Web Posts. 'The Web Posts shall be made of one solid rolled I beam at each panel point or. ...L- s ~ -~ o reinforced and accurately drilled at each end for pin holes. The post shall be held at the centre by a_--_...~....._._---_..-._-_.. wrought iron central tie-rod passing through the web of post, and secured to same with jam nuts on each side. ~ _ 1 ~z.. iron having pin connections with Web Ties. 'I'he Web Ties in each >anel shall be formed of..._~---- -bar of ................. top and bottom chords and sleevenut adjustment. All screw ends shall be enlarged that bar under the thread shall be r-r6 inch larger than in the body. Overhead acing. ~~ he Bracing over the fl//o//or shall be high enough to leave a clear heachvay of feet, and constructed of Overhead The Overhead Lateral Rods shall be made of___~._.... inch to___L_~. inch round iron, placed two in each panel, Laterals. and united direct to top chord pins ; they shall be provided with sleevenut adjustment. Floor Beams. There shall be a ti~'rought Iron Floor Beam at each panel point, fastened direct to lower chord pins with wrought iron stirrups of same capacity as beams. 1'he beam shall be made of plate .:.~-inches to . l-~ inches wide and ~/~! _inch thick, with top flange made of two angles. ~..x- ~._ X__ /~~_. _.inch ; bottom flange of two angles _mch and... ~ mch angle rron web stiffeners; the whole united by ~ mch rivets 3 Lower Laterals. The Lower Laterals shall be made of ~~~ mch to ~~ -mch round iron, placed two m each panel, secured to floor beams by __ ~.~: .....~~~._ _ and adjusted by means of._ _ /~- _ - ............... _.~__X =~ X - _ - ~. ....-.. ._. .. Supplementary The Supplementary Wind Truss shall be composed of......_.~j..~......~ I ~ S wmd Zrnss. securely fastened to end post brace and to the floor beam at each panel point. ~' The End Post Brace shall he made of _ _ _ _ _ . _ _._ _ _ _.._ __ fastened at foot of end post and at first panel of lower chord by pins. N RAILINGS. W ~.~, ~n . Truss Railing. 1'he Sidewalk Railings shall be made of open lattice about 3 feet high with projecting Wickets. _ _ _ _ _ _ __ ~ ~~ ~ R 1'he Truss Railing shall be made of two ~____ _r _~.. a T. on each side secured to trusses. GENERAL. All Iron «'ork shall be neatly and accurately fitted up in a thorough and workmanlike manner. It shall he painted two coats of metallic paint and boiled linseed oil ; one before it leaves the works of the Company, and a second coat after being erected in place. All joints and compressive members shall be planed or dressed to form a perfect bearing. All rivets shall be driven hot. 1'he form and number of parts of bridge may be changed from sizes herein specified without reducing section. In case the weather will not permit the second coat of paint being applied after the erection of the bridge, it is not to prevent the acceptance of the work, but a sufficient amount may be retained from contract price to guarantee said painting as soon as the weather will permit. WOOD WORK. / The Floor Joist shall be of good, sound.. ~;,' ~ ~_ - lumber L ~ inches deep and '`3__._inches wide, placed...-~~......feet apart. Floor Plank to be of good, sound ......... ~ _~. . a inches wide, and laid _ __ _ ~ i,:v-s..,z- w'z,:~? ~:... inch wheel guard. i lumber-.... ...-~ inches thick and...-._.._....._to_._..//..___- The ends to be secured by _~._ by___(~_.... Sidewalk Joist to be..~ by - inches, placed....:.-..-... feet apart. Sidewalk Plank to be__..~,.inches thick. Tl~e ~e~li.n. Ir®n ~~idge C®. 1 Patented April t6, i8g8, and pending. ;;~~'~~ .t B~RLI~I-;~~~~~O~I ~ ~ I~I~G~ -~ ~ O.rs~ , EAST BERLIN, CONN. 1~ ~. - -.. 1~ Speci~ca~ions for a Wrought from Truss ~rid~e. LOCATED __~- __ __ -~ ~ ~ ~- General Extreme length, ~~~ feet. Number of Spans,._....~....-_- . Clear length of each Shan, ~-2. /•' feet. Bridge Dimensions. / to have........... _ roadway. _~ ~_-.. feet wide in the clear, and_ O wall: each......U_._..... feet wide in the clear. Trusses to be. ~i~-feet high and to consist of-_..y ....panels. IRON/ WORK. Top chord. The top chord shall be constructed of two_~1(~,4° inch..~n,~e-....c__.. channel bars and top plate l ~ inches ' ~ united by ~ inch rivets 3 ~ inch pitch, and on the bottom by lattice bars with one i wlde x ~ ~ _ _ ..... inch rivet in each end. Chord to be re-inforced and accurately drilled at each panel point for pin holes. ~S~ , y~-Z ~ Lower Chord. ~ ~~ / 1'he Lower Chord shall be composed of ~~__chord bars .. X ~ _-~' made from refined iron connected at each panel point and ate d post by pins, which latter shall be turned to exact size to fit drilled pin holes in enlarged ~. ~..~. head of chord bars. __ g` C.~~ ~'-~ - - -- -..........._......_........- - - .......... - - - )/nd Post. The End Post shall be composd of rivo_~.1f../mch..- ~1-~~~c~_::~hannel bars waited on the face side by -_/--!~_.X.-- ~~~-~-T _ _______The opposite flanges of channels shall be united by lattice bars same as top chord. The bed plate shall be.___~?,.,~inch thick, securely riveted to end post by wrought iron angle brackets. web Posts. The Web Posts shall be made of one solid rolled I beam at each panel point or ~-_ -„Z fix, ~~/ L `~ reinforced and accurately drilled at each end for pin holes. The post shall beheld at the centre by a .-...._ ~y~_~~.®__......._.. wrought iron central tie-rod passing through the web of post, and secured to same with jam nuts on each side. Web Ties. 'The Web 'Ties in each panel shall be formed of__.~_... bar of_~ccr~n-af... iron having pin connections with top and bottom chords and sleevenut adjustment. All screw ends shall be enlarglled that bar under the thread shall be r-r6 inch larger than in the body. overheadracing. The Bracing over the floor shall be high enough to ]cave a clear headway of ~ feet, and constructed of ~j? - Z x 3 x /~f . ~,s_ ~~-~`u-t -~~ '7'- ~/sue x ~~ ~s r~! - ~-~.---~. Overhead The Overhead Lateral Rods shall be made of.__~d' - inch to -__i/~. inch round iron, placed two in each panel, Laterals. and invited direct to top chord pins ; they shall be provided with sleevenut adjustment. Floor Beams. 'There shall be a Wrought Iron floor Beam at each panel point, fastened direct to lower chord pins with wrought iron stirrups of same capacity as beams. The beam shall be made of plate -~...~f .inches to_. ~.-~ inches wide and mch thick, with top flange made of two angles_._ ~? ..~. `3 _~...-,ll-~-- --mch ; bottom flange of two angles Z.h X..3. X.._,`%r ..inch and .Z~~ inch angle iron web stofener~e whole united by ~A~ ~~inch rivets ~~/ ~/ Lower Laterals. The Lower Laterals shall be made oY~r/ ~-• ~ /Lf ~~-''- "' a ~'~", placed two in each panel, secured to floor Ueams by_.._..~~-K-_~._ ~~0. ~ ` and adjusted by means of Y?: . ............_... _.... ~ rt Supplementary The Supplementary Wind Truss shall be composed of.___-~-_- __.`~_._~-~...._-.t~'......._....._ ..................--...._......-.-____-.... W and Truss. securely fastened to cud post brace and to the Roor beam at each panel point. -F' t P - The End Post Brace shall be made of _ __ _ _ _ _ Fastened at foot of end post and at first panel of lower chord by pins.