Sheep Creek Bridge Attachment.pdf

BEARING PREPARATION INSTRUCTIONS

· ALL BEARING PLATES, ELASTOMERIC LEVELING OR BEARING PADS AND ANCHOR PLATES (IF

REQUIRED) WILL BE DELIVERED LOOSE ALONG WITH THE BRIDGE. THE BEARING PLATES WILL HAVE

HOLES FOR THE FIXED END AND SLOTS FOR THE EXPANSION END OF THE BRIDGE WHICH SHOULD BE

CENTERED ON THE ANCHOR BOLTS TO ALLOW FOR PROPER EXPANSION.

· FOR ABUTMENT APPLICATIONS PLACE THE ELASTOMERIC LEVELING OR BEARING PAD ALONG WITH A

BEARING PLATE DIRECTLY ON THE ABUTMENT SEAT AT EACH BEARING LOCATION. FOR PRECAST SILL

APPLICATIONS, AN ANCHOR PLATE MUST BE POSITIONED ON THE EMBEDDED SILL PLATE OR RISER

PRIOR TO PLACING THE ELASTOMERIC PAD AND BEARING PLATE.

· ASSURE THAT ALL BEARING PLATES ARE AT THE CORRECT ELEVATION, AND THAT THERE IS GOOD

BEARING BETWEEN THE ABUTMENT AND THE LEVELING OR BEARING PAD. IF NECESSARY, SHIM THE

PLATE OR USE NON-SHRINK GROUT UNDER THE ENTIRE BEARING PAD IN ORDER TO ASSURE 100%

BEARING AND PROPER FINAL ELEVATION.

· WHEN LAYERED ELASTOMERIC PADS ARE SPECIFIED, THEY WILL BE SUPPLIED WITHOUT ANCHOR

BOLT HOLES AND THE BEARING PLATES WILL INCLUDE WELDED KEEPER BARS TO CAPTURE THE PAD.

WHEN POSITIONING THE PADS, BE SURE TO CENTER THEM BETWEEN BOTH THE BEARING PLATE

KEEPER BARS AND ANCHOR BOLTS.

· REFER TO THE CONTECH PROJECT SPECIFIC PLANS FOR ANY SPECIAL INSTRUCTIONS RELATED TO

BEARINGS.

GENERAL NOTES:

· THE INFORMATION PROVIDED IN THIS GUIDE IS FOR REFERENCE ONLY AND PROVIDES

PROVEN PROCEDURES FOR FIELD ASSEMBLY AND INSTALLATION OF CONTECH BIG R

BRIDGES THAT WILL NOT RESULT IN DAMAGE TO THE STRUCTURE. CONTECH ENGINEERED

SOLUTIONS IS NOT RESPONSIBLE FOR THE MEANS, METHODS AND EQUIPMENT USED FOR

FIELD ASSEMBLY AND INSTALLATION OF THE BRIDGE STRUCTURES. CONTECH ENGINEERED

SOLUTIONS WILL NOT BE HELD LIABLE FOR ANY ISSUES THAT ARISE DUE TO FIELD ASSEMBLY

AND INSTALLATION OF THE BRIDGE STRUCTURES.

· THIS GUIDE IS A GENERIC DOCUMENT FOR THE INSTALLATION OF OUR TYPICAL BRIDGES. THE

CONTECH PROJECT SPECIFIC PLANS SHOULD BE REFERENCED FOR PROJECT SPECIFIC

DETAILS AND FOR ADDITIONAL INFORMATION.

· CONTECH ENGINEERED SOLUTIONS IS NOT RESPONSIBLE FOR PROJECT SPECIFIC ERECTION

PLANS.

· ON PAINTED, GALVANIZED OR METALIZED BRIDGES, CONTRACTOR IS RESPONSIBLE FOR ALL

FINAL FINISH TOUCH UP OR REPAIRS. THIS INCLUDES BUT IS NOT LIMITED TO ALL BOLTS,

NUTS, WASHERS AND ANY FINISH DAMAGE DUE TO SHIPPING, HANDLING, ASSEMBLY AND

INSTALLATION. WHEN INSTALLING BRIDGES CARE MUST BE TAKEN TO MINIMIZE DAMAGE TO

THE FINISH DURING INSTALLATION. PADDING SHOULD BE USED TO PROTECT THE FINISH

FROM CHAIN, CHOKER OR SLING. FOR PAINTED BRIDGES A NOMINAL AMOUNT OF TOUCH UP

PAINT WILL BE SUPPLIED. THIS IS OFTEN AN EPOXY SYSTEM AND ATTENTION WILL NEED TO

BE GIVEN TO MIXING THE PAINT. TOUCH UP MUST BE APPLIED TO BLEND WITH FACTORY

APPLICATION AS MUCH AS POSSIBLE.

· FOR ADDITIONAL INFORMATION PLEASE CONTACT CONTECH ENGINEERED SOLUTIONS AT:

PHONE: 1-800-338-1122

WEBSITE: www.ContechES.com

PLEASE INCLUDE THE CONTECH PROJECT NUMBER IN ANY CORRESPONDENCE.

SILL PLACEMENT INSTRUCTIONS (WHEN REQUIRED)

· THE PLACEMENT AREA OF THE SILLS SHALL BE DETERMINED BY THE CONTRACTOR BASED

ON THE RELATIVE POSITION OF EACH SILL TO EACH OTHER PER THE ANCHOR BOLT LAYOUT

AND ANCHOR BOLT ELEVATION DETAILS SHOWN ON THE CONTECH PROJECT SPECIFIC

PLANS.

· THE BEARING CAPACITY OF THE SOIL AT THE PLACEMENT AREA OF THE SILLS SHALL MEET

OR EXCEED THE REQUIRED LOAD AT SILL PER THE CONTECH PROJECT SPECIFIC PLANS. THE

ULTIMATE LOAD IS DETERMINED BASED ON FULLY FACTORED LOADS AND THE SERVICE LOAD

IS DETERMINED BASED ON UNFACTORED LOADS. IT IS UP TO THE CONTRACTOR TO ASSURE

THAT PROPER BEARING CAPACITY IS ACHIEVED AND TO DO ANY SOIL IMPROVEMENT

NECESSARY TO ACHIEVE THAT.

· THE PLACEMENT AREA OF THE SILLS SHALL BE GRADED FLAT AND SMOOTH AND AT THE

PROPER ELEVATIONS.

· THE SILLS SHALL BE LIFTED FROM THE FOUR RECESSED SPREAD ANCHORS WITH

ADEQUATELY SIZED RIGGING HARDWARE AND PLACED ON THE PREPARED SILL PLACEMENT

AREAS.

· THE SILLS SHALL BE POSITIONED RELATIVE TO EACH OTHER AS SHOWN ON THE CONTECH

PROJECT SPECIFIC PLANS.

BEAM SPLICE ASSEMBLY INSTRUCTIONS (WHEN REQUIRED)

· DURING THE SHOP FABRICATION PROCESS BEAM SPLICES ARE TYPICALLY SHOP FIT TO ASSURE

THAT MODULES WILL FIT TOGETHER IN THE FIELD. IF DURING THE SPLICE ASSEMBLY PROCESS

ANY MISALIGNMENT APPEARS TO OCCUR, STOP, REMOVE OR LOOSEN ALL SPLICE BOLTS, SHIFT

MODULES AROUND UNTIL PROPER ALIGNMENT OCCURS AND PROCEED WITH ASSEMBLY.

· THE FIRST PART OF THE BRIDGE MODULE SHALL BE SET ON A RELATIVELY FLAT SURFACE WITH

THE SPLICED END CRIBBED UP IN THE AIR AS NEEDED TO ALIGN THE SPLICED PART OF THE

MODULE.

· THE SECOND PART OF THE BRIDGE MODULE SHALL BE LINED UP WITH THE FIRST PART AND THE

SPLICE PLATES INSTALLED WITH ALL BOLTS FINGER TIGHT. ENSURE THAT THE CORRECT BOLT

LENGTH AND DIAMETER PER THE CONTECH BRIDGE PROJECT SPECIFIC PLANS IS BEING USED. IT

MAY BE NECESSARY TO USE DRIFT PINS AND COME-A-LONGS TO GET THE MODULES PROPERLY

ALIGNED AND ALL BOLTS IN PLACE.

· AFTER ALL BOLTS ARE IN PLACE, THEY SHOULD BE BROUGHT TO SNUG TIGHT CONDITION TO

INSURE THAT PLATES AND THE BEAMS ARE BROUGHT INTO GOOD CONTACT WITH EACH OTHER.

· IF THE TOP FLANGES REQUIRE FIELD WELDING, THAT SHOULD BE DONE NEXT PER THE DETAILS IN

THE CONTECH PROJECT SPECIFIC PLANS.

· CONTECH RECOMMENDS NOT TENSIONING BOLTS UNTIL AFTER ALL MODUELS ARE SET AND FULLY

ASSEMBLED BUT IF ACCESS TO THE SPLICES IS NOT POSSIBLE AFTER ERECTION OF THE BRIDGE

MODULES, THE SPLICE BOLTS MAY BE TENSIONED BEFORE SETTING BUT ADDITIONAL WORK MAY

BE REQUIRED TO ALIGN AND ASSEMBLE BRIDGE MODULES TOGETHER. ALL BOLT TENSIONING TO

BE DONE PER THE BOLT TENSIONING INSTRUCTIONS ON SHEET 2 OF THIS GUIDE.

· REFER TO CONTECH PROJECT SPECIFIC PLANS FOR ANY SPECIAL INSTRUCTIONS RELATED TO

BEAM SPLICES.

UNLOADING INSTRUCTIONS

· BRIDGE MODULES WILL ARRIVE ON OVER THE ROAD TRUCKING AND BE DELIVERED AS CLOSE

TO THE BRIDGE LOCATION AS POSSIBLE. THE CONTRACTOR WILL BE RESPONSIBLE FOR

UNLOADING THE BRIDGE. OCCASIONALLY, IT MAY BE NECESSARY TO UNLOAD OTHER

CONTECH MATERIAL TO REACH THE BRIDGE. THE CONTRACTOR WILL NEED TO RELOAD SAID

MATERIAL IN THIS EVENT.

· LOOSE ITEMS SUCH AS BEARING PLATES AND BOLTS WILL ARRIVE WITH THE BRIDGE. THE

CONTRACTOR SHOULD MAKE SURE ALL LOOSE ITEMS ARE UNLOADED WITH THE BRIDGE.

REFER TO THE BILL OF LADING.

HEAVY HEX BOLT DIAMETERS AND WRENCH SIZE

BOLT DIAMETER (IN) WRENCH OR SOCKET SIZE (IN)

1/2 7/8

5/8 1 1/16

3/4 1 1/4

7/8 1 7/16

1 1 5/8

1 1/4 2

B-U2

BACK GOUGE

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T h e d e s i g n a n d f o r m a t i o n s h o w n o n t h i s d r a w i n g i s p r o v i d a s r v i c o h e p r o j e c t o w n e r e n g i n e e r a n d c o n t r a c t o r b y

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C o n t e c h i t h e r t h i s d r a w i n g n o r a n y p a r t t h e r e o f m a y b e u s e d r e p r o d u c e d o r m o d i f i e d y m a n n e r w i t h o u t t p r i o r w r i t t e n c o n s e n t o f

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F i l u r e t o c o m p l y i s d o n e a t t h e u s e r s o w s k a

C n t e c h e x p r e s s l y d i s c l a i m s a n y l i a b i l i t y o r r e s p o n s i b i l i t y f o r s u u e

I f d i s c r e p a n c i e s b e t w e e n t h e s u p p l i e d i n f o r m a t i o n u p i c h t h e d r a w i n g i s b a s t u a l f i e l d c o n d i t i o n s a c o u n t e r e d a s s i r k p r o g r e s s e s t h e s e d i s c r e p a n c i e s m u s t b e r e p o r t e d n t e c h i m m e d i a t e l y f o r r e e v a l u a t i o n o f t h e d e s i g n t e c h a c c e p t s n o l i a b i l i y f r d e s i g n s b a s m i s s i n g i n c o m p l e i n a c c u r a f o r m a t i o n s u p p l i e d b y o t h e r s w w w C o n t e c h

E S c o m

CONCRETE ABUTMENT

ELASTOMERIC

LEVELING OR

BEARING PAD

BEARING PLATE

PRECAST CONCRETE SILL

ELASTOMERIC

LEVELING OR

BEARING PAD

BEARING PLATE

ANCHOR PLATE

BEARING PLATE

ANCHOR BOLTS

CONCRETE ABUTMENT

ELASTOMERIC

LEVELING OR

BEARING PAD

TYPICAL ABUTMENT DETAIL

TYPICAL PRECAST SILL DETAIL

PRECAST CONCRETE SILL

ELASTOMERIC

LEVELING OR

BEARING PAD

BEARING PLATE

ANCHOR PLATE

SILL PLATE

LAYERED ELASTOMERIC PAD DETAIL

LAYERED

ELASTOMERIC PAD

BEARING PLATE

w / KEEPER BARS

ANCHOR BOLTS

PRECAST CONCRETE SILL

TYPICAL PRECAST SILL LIFTING DETAIL

SILL PLATE

RECESSED LIFTING ANCHORS

ASTM A325 WEB

SPLICE BOLT w/

NUT & WASHER

TYPICAL STRINGER SPLICE DETAIL

TOP FLANGE WELDED

ASTM A325

FLANGE SPLICE

BOLT w/ NUT &

WASHER

WEB SPLICE PLATE

INSIDE FLANGE

SPLICE PLATE

OUTSIDE FLANGE

SPLICE PLATE

℄ SPLICE

LOOSE BRIDGE PLANK

PIECES FIELD WELDED

AFTER SPLICE ASSEMBLY

SECTION

ASTM A325 WEB

SPLICE BOLT w/ NUT &

WASHER

ASTM A325 FLANGE

SPLICE BOLT w/ NUT &

WASHER

ASTM A325 FLANGE

SPLICE BOLT w/ NUT &

WASHER

TYPICAL STRINGER SPLICE DETAIL

ALL BOLTED

INSIDE FLANGE

SPLICE PLATE

OUTSIDE FLANGE

SPLICE PLATE

WEB SPLICE PLATE

TOP FLANGE SPLICE

PLATE

℄ SPLICE

SECTION

AutoCAD SHX Text

AutoCAD SHX Text A

AutoCAD SHX Text

AutoCAD SHX Text A

AutoCAD SHX Text

AutoCAD SHX Text B

AutoCAD SHX Text

AutoCAD SHX Text

RAIL ASSEMBLY INSTRUCTIONS (WHEN REQUIRED)

· THESE INSTRUCTIONS ARE FOR TYPICAL W-BEAM AND THRIE-BEAM GIRDER

MOUNTED RAILS SYSTEMS. IF OTHER SYSTEMS ARE USED PLEASE REFERENCE

CONTECH PROJECT SPECIFIC PLANS FOR ADDITIONAL INFORMATION.

· THE BRIDGE RAIL AND POSTS WILL BE DELIVERED LOOSE ALONG WITH THE

BRIDGE MODULES AND MAY BE INSTALLED PRIOR TO, OR AFTER SETTING THE

BRIDGE MODULES. THE JOB SITE WILL DETERMINE WHICH METHOD IS

PREFERABLE.

· EACH BRIDGE RAIL POST SHALL BE FASTENED TO A BRIDGE MODULE POST BLOCK

WITH HEX HEAD BOLTS. EACH OF THE FOUR HOLE LOCATIONS ON THE LOWER

END OF THE POST WILL RECEIVE ONE BOLT, ONE WASHER, AND ONE NUT.

ENSURE THAT THE CORRECT BOLT LENGTH AND DIAMETER PER THE CONTECH

PROJECT SPECIFIC PLANS IS BEING USED.

· THE BRIDGE RAIL IS ATTACHED TO THE POSTS WITH EITHER ONE BUTTON HEAD

BOLT FOR W-BEAM RAIL OR TWO BUTTON HEAD BOLTS FOR THRIE-BEAM RAIL.

EACH HOLE LOCATIONS WILL RECEIVE ONE BUTTON HEAD OVAL SHOULDERED

BOLT, ONE PLATE WASHER, AND ONE RECESSED NUT. ONE REFLECTOR AT EACH

POST SHALL BE INSTALLED AS SHOWN ON THE CONTECH PROJECT SPECIFIC

PLANS. ENSURE THAT THE CORRECT BOLT LENGTH PER THE CONTECH PROJECT

SPECIFIC PLANS IS BEING USED.

· THE OVERLAPPING RAIL SPLICE AND FLARED END SECTIONS SHALL BE FASTENED

TOGETHER WITH BUTTON HEAD BOLTS. EACH HOLE LOCATION, EIGHT EACH FOR

W-BEAM AND TWELVE EACH FOR THRIE-BEAM, SHALL RECEIVE ONE BUTTON

HEAD OVAL SHOULDERED BOLT AND ONE RECESSED NUT. ENSURE THAT THE

CORRECT BOLT LENGTH PER THE CONTECH PROJECT SPECIFIC PLANS IS BEING

USED. IT MAY BE NECESSARY TO WORK MATERIAL AND OR USE DRIFT PINS TO

GET HOLES IN PROPER ALIGNMENT.

· REFER TO THE CONTECH PROJECT SPECIFIC PLANS FOR ANY SPECIAL

INSTRUCTIONS RELATED TO BRIDGE RAIL.

NUT ROTATION FROM SNUG TIGHT CONDITION

BOLT LENGTH (AS MEASURED FROM UNDERSIDE OF HEAD TO

OUTSIDE FACE OF THE NUT PLUS 5/16 INCH)

DISPOSITION OF OUTER FACES OF BOLTED PARTS

BOTH FACES NORMAL TO BOLT AXIS

NOT MORE THAN 4 DIAMETERS 1/3 TURN

MORE THAN 4 DIAMETERS BUT NOT MORE THAN 8 DIAMETERS 1/2 TURN

MORE THAN 8 DIAMETERS BUT NOT MORE THAN 12 DIAMETERS 2/3 TURN

BEARING ASSEMBLY INSTRUCTIONS

· FIELD WELD ALL BEARING PLATES TO THE BRIDGE GIRDERS. WHEN PRECAST SILLS ARE INCLUDED FIELD

WELD ANCHOR PLATES TO THE EMBEDDED SILL PLATE. WELD SIZE AND LENGTHS SHALL BE AS DIRECTED IN

THE CONTECH PROJECT SPECIFIC PLANS.

· ON PAINTED, GALVANIZED OR METALIZED BRIDGES, THE FINISHES WILL BE DAMAGED DUE TO THE FIELD

WELDING AND WILL REQUIRE REPAIR. IT WILL BE THE RESPONSIBILITY OF THE ONSITE CONTRACTOR TO

PERFORM ALL FINISH REPAIR.

· CARE SHOULD BE TAKEN TO AVOID OVERHEATING THE LEVELING OR BEARING PAD DURING WELDING. THIS

IS TYPICALLY NOT AN ISSUE WHEN GOOD WELDING PRACTICES ARE USED BUT IF IT IS A CONCERN HEAT

CONTROL CRAYONS CAN BE USED TO MONITOR HEAT IN THE STEEL WHERE IT CONTACTS THE PAD. IT IS

RECOMMENDED TO KEEP THE HEAT AT THE PAD AT 200 F OR LESS.

· EACH ANCHOR BOLT WILL RECEIVE (1) WASHER AND (2) NUTS. ONE END OF THE BRIDGE IS DESIGNED TO BE

FIXED AND THE NUTS ARE TO BE INSTALLED TIGHT. THE EXPANSION END WILL HAVE THE FIRST NUT

TIGHTENED FINGER TIGHT TO THE WASHER PLACED ON THE BEARING PLATE. THE SECOND NUT WILL BE

INSTALLED TIGHT TO THE FIRST. REFER TO THE CONTECH PROJECT SPECIFIC PLANS TO DETERMINE WHICH

END OF THE BRIDGE IS TO BE THE FIXED OR EXPANSION END.

BRIDGE MODULE LIFTING AND SETTING INSTRUCTIONS

· EACH BRIDGE MODULE TO BE LIFTED FROM THE PRE-INSTALLED LIFTING LUGS WITH

ADEQUATELY SIZED RIGGING HARDWARE AND PLACED ON THE PREPARED BEARINGS.

· IF BRIDGE HAS MORE THAN 2 MODULES OR MODULES THAT ARE NOT IDENTICAL, MODULES

ARE TO BE SET IN NUMERICAL ORDER AS SHOWN ON THE CONTECH PROJECT SPECIFIC

PLANS.

· AFTER PLACING THE BRIDGE, ADJUST STRUCTURE ON THE FOUNDATIONS SO THAT SPACING

IS EQUAL AT BOTH ENDS OR AS DIRECTED IN THE CONTECH PROJECT SPECIFIC PLANS. THE

EXPANSION END GAP DESIGNATED IN THE CONTECH PROJECT SPECIFIC PLANS MUST

MAINTAINED FOR PROPER EXPANSION. IF THE BRIDGE HAS AN ELEVATION DIFFERENCE, BE

SURE TO SET THE HIGH END OF THE BRIDGE ON THE HIGHER FOUNDATION. BEARING

PLATES MUST BE FULLY COVERED BY THE GIRDER FLANGE UNLESS SHOWN OTHERWISE IN

CONTECH PROJECT SPECIFIC PLANS. REFER TO THE CONTECH PROJECT SPECIFIC PLANS

FOR CORRECT ALIGNMENT.

· DIAPHRAGM SPLICE PLATES AND CENTER SPLICE PLATES SHALL BE CONNECTED WITH PASS

THROUGH BOLTS. EACH OF THE HOLE LOCATION ON THE SPLICE PLATES WILL RECEIVE

ONE BOLT, ONE WASHER, AND ONE NUT.

· BRING ALL BOLTS TO A 'SNUG TIGHT' CONDITION TO INSURE THAT THE PARTS OF THE JOINT

ARE BROUGHT INTO GOOD CONTACT WITH EACH OTHER. SNUG TIGHT IS DEFINED AS THE

TIGHTNESS ATTAINED BY A FEW IMPACTS OF AN IMPACT WRENCH OR THE FULL EFFORT OF

A MAN USING AN ORDINARY SPUD WRENCH.

· WHEN INSTALLING BRIDGES CARE MUST BE TAKEN TO MINIMIZE DAMAGE TO THE FINISH

DURING INSTALLATION. PADDING SHOULD BE USED TO PROTECT THE FINISH FROM CHAIN,

CHOKER OR SLING.

BOLT TENSIONING INSTRUCTIONS

· AFTER BRIDGE IS SET AND ASSEMBLED, ALL BOLTS SHALL BE TENSIONED.

· TIGHTENING OF THE BOLTS SHALL BE IN ACCORDANCE WITH THE “SPECIFICATION FOR STRUCTURAL JOINTS

USING HIGH-STRENGTH BOLTS” BY RCSC. CONTECH RECOMMENDS USING THE TURN-OF-NUT PROCEDURE

DESCRIBED BELOW:

BRING ALL BOLTS TO A 'SNUG TIGHT' CONDITION TO INSURE THAT THE PARTS OF THE JOINT ARE

BROUGHT INTO GOOD CONTACT WITH EACH OTHER. SNUG TIGHT IS DEFINED AS THE TIGHTNESS

ATTAINED BY A FEW IMPACTS OF AN IMPACT WRENCH OR THE FULL EFFORT OF A MAN USING AN

ORDINARY SPUD WRENCH. FOLLOWING THIS INITIAL OPERATION, ALL BOLTS SHALL THEN BE

TIGHTENED ADDITIONALLY BY THE APPLICABLE AMOUNT OF NUT ROTATION AS SPECIFIED IN THE TABLE

BELOW, WITH THE TIGHTENING PROGRESSING SYSTEMATICALLY FROM THE MOST RIGID PART OF THE

JOINT TO ITS FREE EDGES. DURING THIS OPERATION, THERE SHALL BE NO ROTATION OF THE PART

NOT TURNED BY THE WRENCH.

NUT ROTATION IS RELATIVE TO BOLT, REGARDLESS OF THE ELEMENT (NUT OR BOLT) BEING TURNED. FOR

BOLTS INSTALLED BY ½ TURN AND LESS, THE TOLERANCE SHOULD BE PLUS OR MINUS 30°; FOR BOLTS

INSTALLED BY 2/3 TURN AND MORE, THE TOLERANCE SHOULD BE PLUS OR MINUS 45°.

§ IF ANY BOLTS OR NUTS DO NOT SMOOTHLY ENGAGE UP TO SNUG-TIGHT THERE MAY BE AN OBSTRUCTION

WITHIN THE TREADS. THE BOLT OR NUT SHOULD BE REMOVED, THE THREADS ON THE BOLT AND NUT

CLEANED AND RETAPPED IF NECESSARY TO ALLOW SMOOTH INSTALLATION.

WEARING SURFACE INSTRUCTIONS

· TYPE AND INSTALLATION OF THE WEARING SURFACE IS NOT CONTECH RESPONSIBILITY.

· BIG R 4.25 INCH STEEL BRIDGE DECKIPLANKS ARE THE STRUCTURAL DECKING SYSTEM. THE WEARING SURFACE

IS ONLY TO PROVIDE A SMOOTH RUNNING SURFACE AND NOT REQUIRED STRUCTURALLY.

· TYPICAL WEARING SURFACE LOAD OF 80 PSF WILL ACCOMMODATE UP TO 5 1/4” OF GRAVEL BASE (130 PCF) OR 4

1/4" OF CONCRETE OR ASPHALT (150 PCF) SURFACING ABOVE THE STEEL BRIDGE DECK CORRUGATIONS.

· IF GRAVEL WEARING SURFACE IS TO BE USED, THE GRAVEL SHALL BE PLACED ON THE DECK AND GRADED

TO THE PROPER THICKNESS.

· REFERENCE CONTECH PROJECT SPECIFIC PLANS FOR RECOMMENDATIONS FOR ASPHALT OR CONCRETE

WEARING SURFACES.

· TIMBER WEARING SURFACES ARE TYPICALLY INSTALLED BY CONTECH DURING FABRICATION, SEE CONTECH

PROJECT SPECIFIC PLANS FOR ADDITIONAL DETAILS.

· OTHER WEARING SURFACE TYPES MAY BE USED AS LONG AS THE TOTAL WEARING SURFACE LOAD IS NOT

GREATER THAN THE WEARING SURFACE LOAD PER THE CONTECH PROJECT SPECIFIC PLANS.

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T h e d e s i g n a f o r m a t i o n s h o w n o n t h i s d r a w i n g i s p r o v i d r v i e p r o j e c t o w n e r e n g i n e e r a n d c o n t r a c t o r b y

C o n t e g i n e e r e d

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C o n t e c

F i l u r e t o c o m p l y i s d o n e a t t h e u s e r s o s k a n t e c h e x p r e s s l y d i s c l a i m s a n y l i a b i l i t y o r r e s p o n s i b i l i t y f o r s u u e

I f d i s c r e p a n c i e s b e t w e e n t h e s u p p l i e d i n f o r m a t i o n u p i c h t h e d r a w i n g i s b a s t u a l f i e l d c o n d i t i o n s a c o u n t e r e d a s s i r k p r o g r e s s e s t h e s e d i s c r e p a n c i e s m u s t b e r e p o r t e d n t e c h i m m e d i a t e l y f o r r e e v a l u a t i o n o f t h e d e s i g n t e c h a c c e p t s n o l i a b i l i y f r d e s i g n s b a s m i s s i n g i n c o m p l e i n a c c u r a f o r m a t i o n s u p p l i e d b y o t h e r s w w w C o n t e c h

E S c o m

PRE-INSTALLED

LIFTING LUG

BRIDGE RAIL POST

POST BLOCK

7/8"Ø x 2 1/4" BOLT w / NUT & WASHER

(TYPICAL AT EACH

CENTER PLATE HOLE)

7/8"Ø x 2 1/4" BOLT w / NUT & WASHER

(4 PER. DIAPHRAGM)

7/8"Ø x 2 1/4" BOLT w / NUT & WASHER

(TYPICAL 4 PER. POST)

5/8"Ø x 1 1/4" OR 2" BUTTON HEAD BOLT w / NUT

8 EACH - W-BEAM RAIL

12 EACH THRIE-BEAM RAIL

REFLECTOR

PLATE WASHER

5/8"Ø x 2" OR 3 1/2" BUTTON

HEAD BOLT w / NUT

1 EACH - W-BEAM RAIL

2 EACH THRIE-BEAM RAIL

FLARED END

SECTION

TYPICAL BRIDGE RAIL ASSEMBLY

STRINGER

DIAPHRAGM & PLATE

CENTER SPLICE PLATE

TYPICAL DIAPHRAGM AND DECK

SPLICE

AutoCAD SHX Text

° F OR LESS.