SECTION 1040 GUARDRAIL, END TERMINALS, ONE-STRAND ACCESS RESTRAINT CABLE AND THREE-STRAND GUARD CABLE MATERIAL

Transcription

1 SECTION 1040 GUARDRAIL, END TERMINALS, ONE-STRAND ACCESS RESTRAINT CABLE AND THREE-STRAND GUARD CABLE MATERIAL Scope. This specification covers guarrail, en terminals, one-stran access restraint cale, three-stran guar cale, an all appurtenances require for installation Basis of Acceptance. The asis of acceptance will e in accorance with specification compliance an from an approve qualifie plant an accepte ase on certification, quality control ocumentation, an tests on samples require y the engineer Sampling, Testing an Acceptance Proceures. All suppliers furnishing components for MoDOT projects shall e qualifie as herein escrie. All components will e suject to inspection y the engineer at the source, intermeiate shipping terminal, or at estination. The engineer shall e allowe unlimite access to all facilities an recors as require to conuct inspection an sampling in accorance with Sec 106 unless specifie elow Application for Placement on Qualifie List. To ecome qualifie, a written request shall e sent y the supplier to Construction an Materials. The request shall inclue a Pre-Qualifie Section 1040, 1043, an 1044 Supplier Inclusion Certificate an Guarantee Statement an a guarantee that all material to e use in farication will e in accorance with MoDOT specifications an pre-approval for any source of material will e receive prior to use Maintaining Qualification. To maintain qualification, the supplier shall maintain quality control ocumentation. The require ocumentation for each shipment of material use in prouction shall e kept on file for three years. The supplier shall notify Construction an Materials at least 24 hours prior to each shipment Disqualification of a Supplier. A supplier may e isqualifie to provie components for use on MoDOT projects ase on the iscretion of Construction an Materials, for reasons incluing, ut not limite to, not maintaining require ocumentation, failure of material to consistently meet specifications, falsification of any ocumentation, misraning of components, unsatisfactory performance in the fiel, or for other reasons inicating lack of consistent material quality A supplier will not e consiere for reinstatement until after one year from the ate of removal for falsification of ocuments Three notices of failure to meet specification requirements within a 12-month perio will e cause for isqualification of the supplier for one year, effective from the ate of the thir notice A supplier isqualifie within one year of the en of a isqualification may e suject to permanent removal, with no application for reinstatement accepte for a perio of three years.

2 Reinstatement of a Supplier. Consieration of reinstatement of a supplier once isqualifie will e no sooner than specifie in Sec , will require a written ocument from the supplier stating the reasons for isqualification an the action taken to correct those eficiencies, written concurrence from Construction an Materials that the prolem has een suitaly aresse, an followe y an application in accorance with Sec Sampling of Material. Ranom sampling of the material use in prouction will e conucte y the engineer to verify the material is in compliance with applicale specifications. Sampling size an frequency will e at the iscretion of the engineer MoDOT Ientification Numer. When the supplier contacts the engineer in accorance with Sec , the engineer will assign a specific MoDOT ientification numer for each component. A Shippers form must accompany the proucts to the jo site Posts an Blocks. The same type of posts an locks shall e use in a given run, except as shown on the plans or as approve y the engineer Woo Posts an Blocks. Woo posts an locks for guarrail an one-stran access restraint cale shall e in accorance with Sec Steel Posts, Plates an Rails. Steel posts, anchor plates, earing plates, soil plates, plate washers an channel rail shall e structural steel in accorance with AASHTO M 270, Grae 36, shall e of the imensions an weights shown on the plans an shall e galvanize in accorance with. Bolts, nuts an washers shall e in accorance with the imensions shown on the plans an shall e galvanize in accorance with, or may e mechanically galvanize. If mechanically galvanize, the coating thickness, aherence an quality requirements shall e in accorance with, Class C. Any imensional efects an structural iscontinuities will e cause for rejection. The material to e wele shall e preheate in accorance with goo weling practice, an wels shall e full-section an soun throughout. All wels shall e mechanically cleane efore galvanizing. No punching, rilling, cutting or weling will e permitte after galvanizing Plastic Blocks. Plastic guarrail locks shall meet the imensional requirements shown on the plans. The locks shall e a homogeneous prouct with a uniform texture, an shall have no cracking, chipping, flaking, peeling or splintering after farication. The locks will not e consiere homogeneous if there are more than five vois larger than 5/8 inch or any vois larger than 3/4 inch on any cut face. The locks shall e of new stock, shall meet all applicale requirements of NCHRP 350 for NCHRP 350 compliant installations or MASH for MASH complaint installations, an shall meet the approval of Construction an Materials Approval. Prior to approval an use of the plastic guarrail locks, the manufacturer shall sumit to Construction an Materials, the manufacturer s name, the prouct ran name or moel numer, a copy of the NCHRP 350 or MASH test results, a copy of the FHWA eligiility letter, an MSDS an a sample lock Acceptance. Acceptance of the material will e ase on the manufacturer s certification an upon the results of such tests as may e performe y the engineer Steel Beam Guarrail. Guarrail eams shall e of the class an type shown on the plans. Guarrail eams shall e in accorance with AASHTO M 180, Type 1 or Type Test Specimens. Test specimens for mechanical properties, irrespective of the galvanization metho, shall e prepare an teste in accorance with ASTM A 653.

3 En Sections. En sections an terminal connectors shall e of a class an type the same as or superior to that use for the eam to which the en sections an terminal connectors are attache. The physical properties shall e in accorance with AASHTO M Farication. The eams, en sections an terminal connectors shall e shape an punche as shown on the plans an reay for assemly when elivere. Only rilling or cutting necessary for special connections an for sampling will e permitte in the fiel. Warpe or eforme eams will e rejecte. Beams to e erecte on a raius of 150 feet or less shall e shop curve to the approximate curvature of the installation Markings Beams. Beam markings shall e in accorance with AASHTO M 180, except the AASHTO specification numer may e omitte if another esignation for Class an Type is use Transition Sections an Terminal Connectors. Transition sections an terminal connectors shall e marke in accorance with Sec , except as follows. Durale tags securely attache to each section or connector may e use. If the transition section or terminal connector is Class B, the Class inicator will not e require. If the transition section or terminal connector is Type 2, the Type inicator will not e require. Heat numers an coating esignations will not e require En Sections. No markings or tags will e require for en sections Posts. Posts shall e marke such that the marking is expose after installation, in such a manner as to inicate the manufacturer Bran Registration an Guarantee. The manufacturer shall sumit a ran registration an guarantee, an current test results inicating compliance with this specification prior to elivery of any material. Once the ran registration an guarantee is approve, the manufacturer s name will e ae to the qualifie list of guarrail faricators. For Type I coate material, the ran registration an guarantee shall certify the material as eing prouce y the continuous galvanizing metho Acceptance. Acceptance will e y ran registration an guarantee, an any sampling eeme necessary y the engineer. The contractor or supplier shall provie equipment an personnel require to otain samples as irecte y the engineer Crashworthy En Terminals Material. Only new material shall e use in the farication of en terminals. The major items of the installations shall e the est stanar proucts of a manufacturer regularly engage in the prouction of that type of en terminal an shall e of the manufacturer's latest approve esign. After installation, the en terminal shall reirect traffic face sie vehicle impacts within the prescrie performance crash test criteria ranges Manufacture s Approval. Prior to approval an use of a en terminal, the manufacturer shall sumit to MoDOT the manufacturer s name, the prouct ran name or moel numer, a copy of the MASH test results, a copy of the FHWA eligiility letter, an shop rawings Acceptance. Acceptance of the material will e ase on the manufacturer s certification an upon satisfactory fiel performance.

4 Contractor s Certification. Prior to installation, the contractor shall furnish to the engineer a manufacturer's certification that the units furnishe are ientical in material an esign to successfully teste units En Anchors, Brige Anchors, an Approach Transitions Steel Tue an Tue Block. Steel tues for en anchors shall consist of structural steel tuing in accorance with ASTM A 500, Grae B, or ASTM A 501 an shall e galvanize in accorance with. Structural steel tuing locks for guarrail shall consist of steel tuing in accorance with ASTM A 500, Grae B, an shall e galvanize in accorance with Cale. Cale shall e 3/4 inch in iameter, Type II, Class A in accorance with AASHTO M Transition Cap Rail. The transition cap rail shall e in accorance with AASHTO M 270, Grae Thrie Beam Rail an Transition Section. The thrie eam rail an transition section shall e galvanize in accorance with AASHTO M 180, Type Approval. The cale assemly an anchor plate will e suject to approval y the engineer an shall have a minimum reaking strength of 20 tons Markings. Thrie eam rail an transition sections shall e marke in accorance with Sec Cale an Fittings One-Stran Access Restraint Cale Cale. Cale shall e zinc-coate steel wire stran; 1/2-inch iameter; seven wire stran; Common, Siemens-Martin or High Strength grae; Class A coating; an shall e in accorance with ASTM A Harware. Eyeolts, turnuckles an clips for cale connections an en anchors shall e steel forgings in accorance with AASHTO M 102 or pearlitic malleale iron in accorance with ASTM A 220. All miscellaneous parts, comprising of cale connections, fasteners an en anchors, shall e galvanize in accorance with Three-Stran Guar Cale Cale an Connecting Harware. The cale an connecting harware shall e in accorance with AASHTO M 30 an AASHTO M 269. The wire rope shall e Type 1, 3/4-inch iameter, 3 y 7 construction with a Class A coating. The rope, with connecting harware, shall evelop the reaking strength of a 25,000-poun single cale. Connecting harware shall e galvanize in accorance with or may e mechanically galvanize. If mechanically galvanize, the coating, thickness, aherence an quality requirements shall e in accorance with, Class C. Cast Steel components shall e in accorance with AASHTO M 103, Grae 70-40, Class 1. Malleale iron castings shall e in accorance with ASTM A 47. Compensating evices shall have a spring constant of 0.46 psi, plus or minus 0.06 poun per inch, an permit 6 inches of travel, plus or minus one inch. All threae parts on compensating cale en assemlies shall e in accorance with ASTM F 568, Class 4.6, 3/4-10 threas. Socket askets shall e esigne for use with

5 the cale anchor wege as shown on the plans. Guar cale anchor rackets shall e manufacture from an AASHTO M 270, Grae 250 steel plate, an zinc-coate in accorance with. Dimensional tolerances not shown on the plans shall e consistent with the proper functioning of the part, incluing the part s appearance an accepte manufacturing process Cale Brackets. Steel use in the farication of the racket shall e in accorance with ASTM A 36. The racket shall e galvanize after farication in accorance with. All fittings, incluing splices, shall e esigne to use the wege etail, an shall e of such section as to evelop the full strength of the 3/4-inch, 25,000-poun roun cale. Designs for a comination or single-unit compensating evice an turnuckle assemly shall e sumitte for approval. Compensating evices shall have a spring rate of 0.46 ± 0.03 poun per inch, an shall permit 6 inches ± one inch of travel. All parts, except cale wege, shall e hot-ip zinc coate in accorance with or AASHTO M Hook Bolts, Hex Bolts, Nuts an Washers. Hook olts, hex olts an washers shall e in accorance with ASTM A 307. Cale hook nuts shall e 5/16-18 threas an in accorance with ASTM A 563. Hook olts, as installe, shall evelop an ultimate pull open strength of 450 to 1,000 pouns applie in a irection normal to the axis of the post. Hooke anchor stus shall e in accorance with AASHTO M 314, except the threas an nominal iameter shall e 3/4-10 an in accorance with ASTM F 568, Class 4.6. All items shall e galvanize in accorance with or may e mechanically galvanize in accorance with, Class C Certification. The contractor shall furnish the manufacturer s certification for all material governe y this specification. Specifically, each certification shall inicate compliance with the requirements of each applicale section an as set forth in Tale I Repair of Galvanizing. Galvanize material shall e hanle in a manner to avoi amage to the surface. No fiel punching, rilling, cutting or weling will e permitte after galvanizing. Any galvanize material on which the spelter coating has een amage will e rejecte or may e repaire in accorance with Sec 1081, with approval from the engineer. TABLE I - Certification Requirements Item Galvanizing Steel Grae Other Stanar Woo Post an Blocks - - a Steel Posts, Plates an AASHTO M 270, Grae 36 Brackets Plastic Blocks - - g Guarrail Beam Sec Sec , c Bolts, Nuts an Washers ASTM A 307 En Terminals Systems - - f En Anchors - Tues - Transition Cap Rail One-Stran Restraint Cale - Cale - Harware Access AASHTO M 30 ASTM A 500/ASTM A 501 AASHTO M 270, Grae 36 AASHTO M 30 AASHTO M 102/ ASTM A 220

6 Three Stran Guar Cale - Cale - Harware - Cast Steel Components - Malleale Iron Castings - Anchor Brackets - Cale Brackets - Hook an Hex Bolts - Hook Nuts - Hooke Anchor Stus AASHTO M30 AASHTO M 30 & AASHTO M 269 AASHTO M 102/ ASTM A 220 AASHTO M 103 ASTM A 47 AASHTO M 270 AASHTO M 270, Grae 36 ASTM A 307 ASTM A 563 AASHTO M 314 e (a) Certification shall state that the material is in accorance with Sec 1050 an shall inclue a listing of the material supplie an a certifie test report as etaile in Section 7.2 of AWPA, Stanar M2, attesting to complete compliance with this specification. () Certification shall inclue, or have attache, specific results of laoratory tests for physical an chemical properties from samples representative of the material. (c) Shall have Bran Registration an Guarantee on file, incluing certification inicating the coating is either Type 1 y Continuous Galvanizing Metho or Type 2. () All threae parts of compensating cale en assemlies an hooke anchor stus shall e in accorance with ASTM F 568. (e) All fittings for cale racket, except the cale wege, shall e in accorance with or AASHTO M 298. (f) Certification shall state the name of the manufacturer an that the units furnishe are ientical in material an esign as those teste for performance in accorance with Sec (g) Certification shall state that the materials furnishe are ientical in chemistry, mechanical properties an geometry as those that passe the NCHRP 350 crash test, an as those that were approve y the Missouri Department of Transportation.