SUPERSTRUCTURE NOTES
DESIGN SPECIFICATIONS:
THIS STRUCTURE CONFORMS TO "STANDARD SPECIFICATIONS FOR HIGHWAY BRIDGES" ADOPTED BY THE
AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO). THE FOLLOWING
SPECIFICATIONS WERE USED:
- AASHTO MANUAL 17TH EDITION, 2002
- NATIONAL DESIGN SPECIFICATION FOR WOOD CONSTRUCTION (NDS), 2001
- ODOT BRIDGE DESIGN MANUAL
THE WORK TO BE PERFORMED SHALL CONFORM TO THE 2002 EDITION OF THE OHIO DEPARTMENT OF
TRANSPORTATION CONSTRUCTION AND MATERIAL SPECIFICATIONS (CMS) INCLUDING ANY SUPPLEMENTAL
SPECIFICATIONS HEREIN. ITEM 521 SHALL BE PERFORMED IN ACCORDANCE WITH THE 1997 CMS.
DESIGN LOADING:
- HS25-44 TRAFFIC LOADING
- 3" ASPHALT WEARING SURFACE (37.5-PSF)
- MILL BEFORE ADDING ANY FUTURE WEARING SURFACE
(TOTAL WEARING SURFACE NOT TO EXCEED 3")
STRUCTURAL STEEL: PLATES, RODS, ASSEMBLIES:
ALL STRUCTURAL STEEL ITEMS SHALL BE HOT DIP GALVANIZED PER ASTM A123/A153 AND ODOT 711.02 OF THE
CONSTRUCTION AND MATERIAL SPECIFICATIONS. ANGLES AND ALL OTHER MISCELLANEOUS STEEL ITEMS NOT
SPECIFIED OTHERWISE SHALL BE ASTM A36/A709 GRADE 36 STEEL, Fy = 36KSI. ALL STRUCTURAL STEEL SHALL
BE PAID FOR UNDER ITEM 513, STRUCTURAL STEEL, MISCELLANEOUS: PLATES, RODS, ASSEMBLIES.
PLATES - ALL PLATES INCLUDING DIAGONAL ROD END-BEARING PLATES, LOWER CHORD SPLICE PLATES, SAG ROD
MOUNTING PLATES, AND PLATE WASHERS SHALL BE ASTM A36/A709, Fy = 36KSI.
RODS - STEEL RODS SHALL INCLUDE PRATT TRUSS DIAGONAL RODS, FLOOR BEAM HANGER RODS, ROOF SYSTEM
CROSS-BRACING RODS (SAG RODS), AND ALL THE CORRESPONDING ATTACHMENTS. ALL RODS SHALL BE
THREADED ON EACH END WITH UNIFIED INCH COURSE THREADS (ANSI UNC).
PRATT TRUSS DIAGONAL RODS SHALL BE ASTM A193-B7, Fu = 125KSI. DIAGONAL RODS SHALL BE THREADED 9"
ON EACH END AND SHALL BE DOUBLE-NUTTED ON EACH END FOR LOCKING PURPOSES.
FLOOR BEAM HANGER RODS SHALL BE ASTM A449, Fu = 120KSI IN ACCORDANCE WITH AASHTO M164. FLOOR
BEAM HANGER RODS SHALL BE THREADED 6" ON EACH END AND SHALL BE DOUBLE-NUTTED ON EACH END FOR
LOCKING PURPOSES.
SAG RODS SHALL BE ASTM A449, Fu = 120KSI IN ACCORDANCE WITH AASHTO M164, AND SHALL BE THREADED
6" ON EACH END. SLEEVE NUTS AT EACH END OF THE SAG RODS SHALL BE OF THE SAME MATERIAL AND CAPABLE
OF CARRYING THE FULL LOAD CAPACITY OF THE SAG RODS. EYEBAR/ROD ENDS AT EACH END OF THE SAG RODS
SHALL BE ASTM A193-B7 AND HAVE A 4" THREADED PORTION.
ASSEMBLIES - MISCELLANEOUS ASSEMBLIES INCLUDE THE SWAY BRACE AND BEARING PLATE ASSEMBLY, THE
MOUNTING BRACKET ASSEMBLY FOR PRATT TRUSS VERTICAL ELEMENTS , AND THE UPPER CHORD SPLICE PLATE
ASSEMBLY. ALL MISCELLANEOUS STEEL ASSEMBLIES SHALL BE ASTM A36/A709, Fy = 36KSI.
HARDWARE:
ALL HARDWARE INCLUDING SHEAR PLATE CONNECTORS, HIGH-STRENGTH BOLTS, DOME-HEAD DRIVE SPIKES, LAG
SCREWS, DOME-HEAD BOLTS, SPIKES, NAILS, NUTS AND WASHERS SHALL BE HOT DIP GALVANIZED PER ASTM
A123/A153 AND ODOT 711.02 OF THE CONSTRUCTION AND MATERIAL SPECIFICATIONS. SPIKES AND NAILS MAY
BE MECHANICALLY ZINC COATED IN ACCORDANCE WITH ASTM B695 CLASS 50. ALL HARDWARE SHALL BE
INCLUDED FOR PAYMENT UNDER ITEM 513, STRUCTURAL STEEL, MISCELLANEOUS: HARDWARE. ALL BOLT HOLES
AND LEAD HOLES REQUIRED FOR INSTALLATION OF THE HARDWARE SHALL BE PREDRILLED BY THE FABRICATOR
PRIOR TO APPLICATION OF THE TIMBER PRESERVATIVE TREATMENT. UNLESS SPECIFICALLY NOTED OTHERWISE,
FIELD DRILLING OF TIMBER MEMBERS SHALL NOT BE PERMITTED.
SHEAR PLATE CONNECTORS - SHEAR PLATES SHALL BE MADE OF MALLEABLE IRON. EACH CASTING SHALL
CONSIST OF A PERFORATED ROUND PLATE WITH A FLANGE AROUND THE EDGE, EXTENDING AT RIGHT ANGLES TO
THE FACE OF THE PLATE AND PROJECTING FROM ONE FACE ONLY. THE PLATE PORTION SHALL HAVE A CENTRAL
BOLT HOLE WITH AN INTEGRAL HUB EXTENDING FROM THE SAME FACE AS THE FLANGE. ALL THRU-BOLTS, LAG
SCREWS, AND DOME-HEAD BOLTS USED IN CONJUNCTION WITH SHEAR PLATE CONNECTORS SHALL HAVE CUT
THREADS WITH UNREDUCED SHANK DIAMETERS. MINIMUM ALLOWABLE SHEAR CAPACITY FOR SHEAR PLATE
CONNECTORS LOADED PARALLEL TO THE GRAIN SHALL BE AS FOLLOWS:
BOLT DIA.
SHEAR PLATE DIA.
SHEAR CAPACITY
3/4"
2-5/8"
2900-LB
3/4"
4"
4400-LB
7/8"
4"
6000-LB
HIGH-STRENGTH FASTENERS - UNLESS NOTED OTHERWISE, ALL HIGH-STRENGTH FASTENERS INCLUDING
THRU-BOLTS AND ANCHOR BOLTS SHALL CONFORM TO ASTM A325 IN ACCORDANCE WITH THE ODOT CMS ITEM
711.09. PROOF LOAD TESTS (ASTM F606 METHOD 1) ARE REQUIRED FOR ALL BOLTS. WEDGE TESTS ARE
REQUIRED FOR ACTUAL BOLT SIZES USED ON THIS PROJECT IN ACCORDANCE WITH SECTION 8.3 OF AASHTO
M164. GALVANIZED BOLTS SHALL BE WEDGE TESTED AFTER GALVANIZING.
NUTS - ALL HEAVY HEX NUTS FOR ASTM A325 BOLTS SHALL CONFORM TO AASHTO M291 (ASTM A563) GRADES
DH, DH3, C, C3, AND D. ALTERNATIVELY, NUTS MAY CONFORM AASHTO M292 (ASTM A194) GRADES 2 AND 2H.
NUTS TO BE HOT-DIP GALVANIZED SHALL BE HEAT TREATED GRADE 2H, DH, OR DH3. ALL GALVANIZED NUTS
SHALL BE LUBRICATED WITH A LUBRICANT CONTAINING VISIBLE DYE. PROOF LOAD TESTS ARE REQUIRED FOR THE
NUTS IN ACCORDANCE WITH AASHTO M291. THE PROOF LOAD TESTS FOR NUTS TO BE USED WITH GALVANIZED
BOLTS SHALL BE PERFORMED AFTER GALVANIZING, OVERTAPPING, AND LUBRICATING.
LAG SCREWS - CONFORM TO ASTM A307, ANSI B18.2.1, AND THE UNIFORM BUILDING CODE STANDARD NO.
25-17, SECTION 225.11735 & 25.1736. LAG SCREWS SHALL BE SQUARE OR STANDARD HEX HEAD SCREWS IN
ACCORDANCE WITH AMERICAN NATIONAL STANDARD. NOMINAL SIZES ARE AS SHOWN ON THE PLANS. LEAD
HOLES SHALL BE PREBORED FOR EACH LAG SCREW. THE LEAD HOLE FOR THE UNTHREADED SHANK DIAMETER
SHALL HAVE THE SAME DIAMETER AS THE SHANK AND DEPTH EQUAL TO THE LENGTH OF THE UNTHREADED
SHANK. THE LEAD HOLE FOR THE THREADED PORTION OF THE SCREW SHALL HAVE A DEPTH EQUAL TO THE
LENGTH OF THE THREADS. LEAD HOLE DIAMETERS FOR THE UNTHREADED SHANK AND THE THREADED PORTION
SHALL BE AS FOLLOWS:
SCREW DIA.
UNTHREADED SHANK
THREADED PORTION
5/8"
5/8"
13/32"
3/4"
3/4"
1/2"
7/8"
7/8"
39/64"
1"
1"
23/32"
DOME-HEAD BOLTS - THE SHANK SHALL BE UNREDUCED IN DIAMETER. THESE BOLTS SHALL CONFORM WITH
ASTM A307 COARSE THREAD. DEPENDING ON MANUFACTURER, BOLT HEADS MAY DIFFER SLIGHTLY FROM THE
VALUES SHOWN BELOW. BOLTS WITH LARGER HEAD DIMENSIONS ARE ACCEPTABLE. THE MINIMUM HEAD
DIAMETER AND THICKNESS SHALL BE AS FOLLOWS:
BOLT DIA.
HEAD DIA.
HEAD THICKNESS
5/8"
1-15/16"
5/16"
3/4"
2-1/4"
3/8"
7/8"
2-5/8"
7/16"
1"
2-7/8"
1/2"
DOME-HEAD DRIVE SPIKES - DRIVE SPIKES USED TO ANCHOR FLOOR PANELS TO FLOOR BEAMS SHALL BE 3/4"
DIAMETER BY 16" LONG, WITH SPIRAL GROOVING INTENDED FOR DRIVING INTO PREDRILLED 19/32" LEAD HOLES
(OR PER MANUFACTURER'S SPECIFICATIONS). THE SPIKES SHALL BE DOME HEADED WITH A MINIMUM HEAD
DIAMETER OF 2-1/4" AND A MINIMUM HEAD THICKNESS OF 3/8" (DEPENDING ON MANUFACTURER). THE DRIVE
SPIKES SHALL CONFORM TO ASTM A66-87 "STANDARD SPECIFICATIONS FOR STEEL SCREW SPIKES" AND THE
DESIGN VALUES FOR WITHDRAWAL LOADS PUBLISHED IN THE TIMBER CONSTRUCTION MANUAL OF THE AMERICAN
INSTITUTE OF TIMBER CONSTRUCTION (AITC). SUPPLIERS OF DOME-HEAD DRIVE SPIKES AND DOME-HEAD BOLTS
ARE:
ART THURESON, INC.
LEWIS BOLT & NUT CO.
PORTLAND BOLT COMPANY
5476 DIXIE HIGHWAY, STE D
15500 WAYZATA BLVD. STE 611
3441 NW GUAM STREET
WATERFORD, MI 48329
WAYZATA, MN 55391
PORTLAND, OR 97210
PH: (248) 623-8599
PH: (800) 328-3480
PH: (800) 547-6758
SPIKES AND NAILS - HARDENED STEEL SPIKES AND NAILS SHALL BE HEAT TREATED TO A MINIMUM HARDNESS
OF ROCKWELL C37. THE FINISHED PRODUCT SHALL BE SUFFICIENTLY DUCTILE TO WITHSTAND (WITHOUT
FRACTURE) COLD BENDING THROUGH 20 DEGREES OVER A DIAMETER NOT GREATER THAN THE DIAMETER OF THE
NAIL. SPIKE AND NAIL SIZES AND DESIGNATIONS SHALL CONFORM WITH THE 2001 NATIONAL DESIGN
SPECIFICATIONS FOR WOOD CONSTRUCTION (NDS). IF REQUIRED, 6d AND 8d NAILS MAY BE COMMON NAILS
(UNLESS NOTED OTHERWISE). ALL OTHER SIZES SHALL BE RING SHANK HARDENED STEEL. NAIL SIZES ARE LISTED
FOR THE FOLLOWING ATTACHMENTS:
16d (3-1/2") SIDING, TRIM, PURLINS, FASCIA, RAKE BOARD, 2x4 END GIRTS, CURB BLOCKING
60d (6")
4x4 SIDING GIRTS, 4x4 END-FRAMING NAILER
WASHERS - NO WASHERS ARE REQUIRED WITH DOME-HEAD DRIVE SPIKES OR DOME-HEAD BOLTS. HARDENED
STEEL WASHERS CONFORMING TO THE REQUIREMENTS OF AASHTO M293 (ASTM F436) SHALL BE USED UNDER
THE HEADS OF LAG SCREWS, THRU-BOLTS, AND ANCHOR BOLTS BEARING ON STEEL COMPONENTS THAT HAVE
OVERSIZED OR SLOTTED HOLES. ALL HOLES ARE STANDARD HOLES UNLESS NOTED OTHERWISE. UNLESS NOTED
OTHERWISE, MALLEABLE IRON RIBBED WASHERS SHALL BE USED UNDER THE HEADS OF LAG SCREWS, ANCHOR
BOLTS, AND AT BOTH ENDS OF THRU-BOLTS BEARING ON TIMBER COMPONENTS. MALLEABLE IRON WASHER
SIZES SHALL BE AS FOLLOWS:
BOLT DIA.
WASHER DIA.
WASHER THICKNESS
5/8"
2-3/4"
5/16"
3/4"
3"
1/2"
7/8"
3-1/2"
9/16"
1"
4"
9/16"
TIMBER PRESERVATIVE TREATMENT:
PRESERVATIVE TREATMENT SHALL CONFORM WITH CMS 712.06, AASHTO M133, AND AITC 109-84. ALL GLULAM
TIMBER SHALL BE TREATED AFTER GLUING PER AWPA C28 (EXCEPT AS NOTED UNDER #4 BELOW). WHEREVER
PRACTICABLE, TIMBER PRESERVATIVE TREATMENT SHALL BE APPLIED UNDER CONTROLLED CONDITIONS PRIOR
TO ARRIVING AT THE PROJECT SITE. ANY REQUIRED FIELD TREATMENT SHALL BE DONE USING COPPER
NAPTHENATE ACCORDING TO AWPA M4-84 AND THE CMS. ALL CUTTING, DRILLING, MACHINING, AND FABRICATION
SHALL BE DONE PRIOR TO APPLICATION OF THE PRIMARY PRESERVATIVE TREATMENT. TREAT LUMBER WITH
COPPER NAPTHENATE WHEREVER CUTTING, DRILLING, OR MACHINING IS DONE AFTER APPLICATION OF THE
PRIMARY PRESERVATIVE TREATMENT (AS WITH TYPE #4 TREATMENT NOTED BELOW). INCISING SHALL NOT BE
PERMITTED. PRESERVATIVE TREATMENT SHALL BE APPLIED PRIOR TO MISCELLANEOUS COATINGS AND WOOD
SHALL BE FREE OF EXCESS PRESERVATIVE SOLVENT AT THE CONCLUSION OF THE TREATING PROCESS. BRIDGE
TIMBER INCLUDING TIMBER FLOOR DECK, FLOOR BEAMS, SPREADER BEAMS, BEARING BLOCKS, LOWER KNEE
BRACING, PRATT TRUSS LOWER CHORDS, AND TIMBER CURBS SHALL BE TREATED AS SPECIFIED IN THE TIMBER
SUMMARY TABLE. APPROVED METHODS OF PRESERVATIVE TREATMENT ARE AS FOLLOWS:
#1 - COPPER NAPTHENATE (AWPA P8) IN TYPE A HYDROCARBON SOLVENT (AWPA P9)
EMPTY-CELL PRESSURE TREATED TO 0.6 LB/CF RETENTION OR REFUSAL (AWPA C14 AND C28).
#2 - PENTACHLOROPHENOL (AWPA P8) IN HEAVY OIL, TYPE A HYDROCARBON SOLVENT (AWPA P9)
EMPTY-CELL PRESSURE TREATED TO 0.6 LB/CF RETENTION OR REFUSAL (AWPA C14 AND C28).
#3 - CHROMATED COPPER ARSENATE (CCA) TYPES I, II, OR III (AWPA P5) PRESSURE TREATED TO 0.6 LB/CF
RETENTION OR REFUSAL PER FEDERAL STANDARD TT-E-551 (AWPA C14). ACA SHALL BE USED IN
PLACE OF CCA FOR DOUGLAS FIR COMPONENTS (CCA IS NOT PERMITTED FOR DOUGLAS FIR).
#4 - GLULAM PRESERVATIVE TREATMENT (BEFORE GLUING): CHROMATED COPPER ARSENATE (CCA)
TYPES I, II, OR III (AWPA P5) PRESSURE TREATED TO 0.4 LB/CF RETENTION (AWPA C28, M4).
GLUED SURFACES OF TREATED LAMINATIONS SHALL BE PLANED PRIOR TO GLUING. ACA SHALL BE
USED IN PLACE OF CCA FOR DOUGLAS FIR COMPONENTS (CCA IS NOT PERMITTED FOR DOUGLAS FIR).
ALL TIMBER BEARING BLOCKS THAT WILL REST ON BRIDGE SEATS AT THE ABUTMENTS SHALL BE PRESSURE
TREATED FOR SOIL CONTACT WITH TWO HEAVY COATS OF CCA. A CERTIFICATE OF TREATMENT, FURNISHED BY A
CERTIFIED AWPA TREATMENT FACILITY IS REQUIRED FOR CONFORMANCE TO THE ABOVE TREATMENTS.
STRUCTURAL TIMBER AND LUMBER:
ALL STRUCTURAL TIMBER AND LUMBER SHALL CONFORM WITH ODOT 711.26 OF THE CONSTRUCTION AND MATERIAL
SPECIFICATIONS AND SHALL NOT EXCEED 19% MOISTURE CONTENT BY WEIGHT. GLUED LAMINATED LUMBER SHALL
BE KILN-DRIED WITH A MOISTURE CONTENT NOT TO EXCEED 16% BY WEIGHT. WHERE SPECIFIC FRAMING AND
FASTENING DETAILS ARE NOT SHOWN ON THESE PLANS, THE CONTRACTOR SHALL USE PROPER CARPENTRY FRAMING
AND FASTENING TECHNIQUES STANDARD TO THE INDUSTRY AND IN ACCORDANCE WITH THE AMERICAN INSTITUTE OF
TIMBER CONSTRUCTION (AITC) IN ORDER TO PRODUCE A SOUND, SQUARE, AND PLUMB STRUCTURE.
SHOP DRAWINGS - THE FABRICATOR SHALL FURNISH SHOP DRAWINGS FOR EACH COMPONENT DETAILING ALL
MEMBER SIZES, TIMBER CONNECTIONS, AND LUMBER COMBINATIONS BASED ON GRADE AND SPECIES. SIZE AND
LOCATION OF HOLES, NOTCHES, AND SAW-CUTS SHALL BE ACCURATELY DETAILED FOR EACH COMPONENT AND SHALL
CONFORM TO THE EDGE DISTANCE, END DISTANCE AND SPACING REQUIREMENTS SPECIFIED IN THE NATIONAL DESIGN
SPECIFICATION FOR WOOD CONSTRUCTION (NDS), 2001 EDITION.
MEMBER SIZES AND DIMENSIONS - GLULAM MEMBER SIZES AND DIMENSIONS SHOWN ON THE PLANS ARE ACTUAL
FINISHED SIZES, UNLESS NOTED OTHERWISE. MEMBER SIZES CALLED OUT ON THE PLANS FOR TIMBERS AND SAWN
LUMBER ARE NOMINAL SIZES, UNLESS NOTED OTHERWISE. ACTUAL SIZES AND NOMINAL SIZES ARE INDICATED AS
FOLLOWS:
ACTUAL SIZES:
1" x 1"
NOMINAL SIZES: 1 x 1
TIMBER PROTECTION - THE GENERAL CONTRACTOR IS RESPONSIBLE FOR PROTECTION OF THE MATERIALS AFTER
ARRIVAL AT THE DESTINATION BY RAIL CARS, TRUCKS, OR ANY OTHER MODE OF TRANSPORTATION. CAREFULLY
UNLOAD AND HANDLE THE GLULAM AND TIMBER MEMBERS AT THE JOB SITE TO PREVENT SURFACE MARRING AND
DAMAGE. IF GLUED LAMINATED WOOD IS TO BE STORED ON-SITE BEFORE ERECTION, PLACE IT ON BLOCKS WELL OFF
THE GROUND WITH INDIVIDUAL MEMBERS SEPARATED BY STRIPS SO THAT AIR MAY CIRCULATE. COVER THE TOP AND
SIDES OF STORAGE PILES WITH MOISTURE-RESISTANT COVERING (DO NOT USE CLEAR POLYETHYLENE FILMS). WHEN
HOISTING MEMBERS INTO PLACE, USE PADDED OR NON-MARRING SLINGS AND PROTECT CORNERS WITH WOOD
BLOCKING. ADEQUATELY BRACE MEMBERS AS THEY ARE ERECTED TO HOLD THEM IN A SAFE POSITION UNTIL FULL
STABILITY IS PROVIDED.
SIDING - LUMBER SPECIES FOR SIDING MAY DIFFER FROM THAT USED ON THE REST OF THE BRIDGE, HOWEVER, THE
SAME SIDING SPECIES MUST BE USED THROUGHOUT. IF S1S2E IS USED, THE ROUGH SAWN SIDE SHALL BE TO THE
WEATHER. SIDING BOARDS SHALL BE HUNG WITH 1/4" OPENINGS BETWEEN THEM FOR SEASONED MATERIAL AND
WITH TIGHT JOINTS FOR UNSEASONED MATERIAL.
GLUED LAMINATED COMPONENTS (GLULAM) - MANUFACTURE OF THE STRUCTURAL GLUED LAMINATED WOOD
COMPONENTS SHALL CONFORM TO THE MANUFACTURING REQUIREMENTS OF THE AMERICAN INSTITUTE OF TIMBER
CONSTRUCTION STANDARDS AND STANDARD SPECIFICATIONS FOR GLUED LAMINATED TIMBER AITC 117. THE GLULAM
MANUFACTURER AND FABRICATOR SHALL BE A CERTIFIED MEMBER OF THE AMERICAN INSTITUTE OF TIMBER
CONSTRUCTION (AITC). GLULAM SUPPLIERS INCLUDE:
ART THURESON, INC.
SENTINEL STRUCTURES, INC.
GALYON LUMBER CO.
5476 DIXIE HIGHWAY, STE D
477 S. PECK AVENUE
4635 NEWCOM AVE.
WATERFORD, MI 48329
PESHTIGO, WI 54157
KNOXVILLE, TN 37919
PH: (248) 623-8599
PH: (715) 582-4544
PH: (800) 448-7682
REFER TO THE AITC WEBSITE ( www.AITC-glulam.org/Manufacurers/ ) FOR A LIST OF ADDITIONAL APPROVED GLULAM
SUPPLIERS.
QUALITY CONTROL SHALL BE PROVIDED IN ACCORDANCE WITH ANSI/AITC A190.1 LATEST EDITION, AMERICAN
NATIONAL STANDARD FOR WOOD PRODUCTS-STRUCTURAL GLUED LAMINATED TIMBER, AND THE AMERICAN INSTITUTE
OF TIMBER CONSTRUCTION INSPECTION MANUAL AITC 200-2004. GLULAM MEMBERS SHALL BE MARKED WITH A
QUALITY MARK, AND A CERTIFICATE OF CONFORMANCE SHALL BE PROVIDED TO INDICATE CONFORMANCE WITH
ANSI/AITC A 190.1-LATEST EDITION. APPEARANCE GRADE SHALL BE AITC INDUSTRIAL.
GLUED LAMINATED LUMBER SHALL BE KILN-DRIED SOUTHERN PINE (SP) OR DOUGLAS FIR (DF) GRADED TO MEET THE
REQUIREMENTS OF STANDARD SPECIFICATIONS FOR STRUCTURAL GLUED LAMINATED TIMBER, AITC-117. ADHESIVES
SHALL BE WET-USE (WATERPROOF) COMPLYING WITH ANSI/AITC 190.1-LATEST EDITION. THESE PLANS ARE DRAWN
USING DIMENSIONS AND GRADING FOR SOUTHERN PINE GLUED LAMINATED TIMBER. LUMBER COMBINATIONS SHALL
BE DETERMINED BY THE DESIGN REQUIREMENTS FOR EACH COMPONENT, WHICH ARE DESIGNATED IN THE TIMBER
SUMMARY TABLE ON THE ESTIMATED QUANTITIES SHEET. LUMBER COMBINATIONS SHALL MEET THE REQUIREMENTS
OF ANSI/AITC A 190.1-LATEST EDITION. ALLOWABLE STRESSES ARE BASED ON THE NATIONAL DESIGN SPECIFICATION
FOR WOOD CONSTRUCTION (NDS) 2001 EDITION. THE MINIMUM VALUES FOR UNFACTORED ALLOWABLE TIMBER
STRESSES, BASED ON GLULAM LUMBER GRADE AND SPECIES, SHALL BE AS FOLLOWS:
LOADING TYPE
- AXIAL TENSION
- AXIAL COMPRESSION
- COMPRESSION (PERPENDICULAR TO GRAIN)
- BENDING (PERPENDICULAR TO LAMINATIONS)
- BENDING (PARALLEL TO LAMINATIONS)
- SHEAR (PARALLEL TO GRAIN)
- MODULUS OF ELASTICITY, E
COMBINATION SYMBOL
#48 (SP) OR #3 (DF)
1400 psi
2200 psi
650 psi
1900 psi
2000 psi
210 psi
1700 ksi
COMBINATION SYMBOL
26F-V4 (SP) OR 26F-E (DF)
1200 psi
1600 psi
650 psi
2600 psi
1850 psi
240 psi
1900 ksi
MISCELLANEOUS COATINGS:
FOR ANY TIMBER ELEMENTS RECEIVING PRESERVATIVE TREATMENT, AS DESIGNATED IN THE TIMBER SUMMARY TABLE
ON THE ESTIMATED QUANTITIES SHEET, ALL MISCELLANEOUS COATINGS SHALL BE APPLIED AFTER PRESERVATIVE
TREATMENT. ALL MISCELLANEOUS COATINGS SHOWN BELOW ARE LISTED IN THE ORDER OF THEIR APPLICATION. TO
ENSURE ADHERENCE TO THE WOOD, THE BRIDGE COMPONENTS SHALL BE CLEANED OF DUST AND DEBRIS PRIOR TO
EACH APPLICATION FOR ALL MISCELLANEOUS COATINGS. THE METHOD OF CLEANING SHALL BE NONDESTRUCTIVE,
SUCH AS COMPRESSED AIR.
STAINING OF SIDING AND TRIM - STAINING OF SIDING AND TRIM SHALL BE PAID FOR UNDER ITEM 514, FIELD
PAINTING, MISC.: STAINING OF SIDING AND TRIM. STAIN SHALL BE APPLIED PRIOR TO INSTALLATION OF THE SIDING
AND TRIM ELEMENTS AND BEFORE THE ANTI-GRAFFITI. LUMBER SHALL BE UNIFORMLY DRIED TO 19% MOISTURE
CONTENT OR LESS PRIOR TO THE APPLICATION OF STAIN. SURFACES MUST BE DRY, FREE OF DIRT, SAWDUST, GREASE,
WAX AND ANY FOREIGN MATERIALS
ANTI-GRAFFITI - ANTI-GRAFFITI SHALL BE PAID FOR UNDER ITEM 514, FIELD PAINTING MISC.: ANTI-GRAFFITI. AN
ANTI-GRAFFITI COATING SUCH AS SHERWIN WILLIAMS CPU 647 ANTI-GRAFFITI COATING (OR APPROVED EQUIVALENT)
SHALL BE APPLIED PER THE MANUFACTURER'S SPECIFICATIONS TO VISIBLY EXPOSED SURFACES OF THE STRUCTURE
CAPABLE OF BEING ACCESSED BY VANDALS. THESE LOCATIONS INCLUDE INTERIOR FACES OF THE SIDING ON SIDE
WALLS, EXTERIOR SIDING BELOW WINDOWS, EXTERIOR SIDING IN THE LAST 25-FT OF EACH BRIDGE END, VISIBLE
FACES OF PRATT TRUSS ELEMENTS, SIDING GIRTS, TIMBER CURB, GUIDERAIL, AND THE UNDERSIDE OF THE FLOOR
SYSTEM IN THE LAST 25-FT OF EACH BRIDGE END. THE ANTI-GRAFFITI COATING SHALL BE APPLIED AFTER THE BRIDGE
IS FULLY ASSEMBLED.
ITEM 513, STRUCTURAL STEEL, MISCELLANEOUS: PLATES, RODS, ASSEMBLIES:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE MAJOR STEEL COMPONENTS OF
THE BRIDGE LIKE PLATES, RODS, AND MISCELLANEOUS ASSEMBLIES. STEEL PLATES
SHALL INCLUDE DIAGONAL ROD END-BEARING PLATES, LOWER CHORD SPLICE PLATES,
SAG ROD MOUNTING PLATES, AND PLATE WASHERS. STEEL RODS SHALL INCLUDE
PRATT TRUSS DIAGONAL RODS, FLOOR BEAM HANGER RODS, ROOF SYSTEM
CROSS-BRACING RODS (SAG RODS), AND ALL THE CORRESPONDING ROD
ATTACHMENTS. MISCELLANEOUS ASSEMBLIES INCLUDE THE SWAY BRACE AND
BEARING PLATE ASSEMBLY, THE MOUNTING BRACKET ASSEMBLY FOR PRATT TRUSS
VERTICAL ELEMENTS, AND THE UPPER CHORD SPLICE PLATE ASSEMBLIES. THE
GUARDRAIL TERMINAL CONNECTOR (ODOT STANDARD GR1.1) AND ALL STEEL ANGLES
SHALL ALSO BE INCLUDED WITH THIS ITEM.
ITEM 513, STRUCTURAL STEEL, MISCELLANEOUS: HARDWARE:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE MISCELLANEOUS GALVANIZED
HARDWARE. THIS ITEM SHALL INCLUDE SHEAR PLATE CONNECTORS, HIGH-STRENGTH
BOLTS, DOME-HEAD DRIVE SPIKES, LAG SCREWS, DOME-HEAD BOLTS, SPIKES, NAILS,
NUTS, WASHERS, AND ANY OTHER MISCELLANEOUS HARDWARE REQUIRED TO
FABRICATE OR INSTALL THE BRIDGE SUPERSTRUCTURE.
ITEM 514, FIELD PAINTING, MISC.: STAINING OF SIDING AND TRIM:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO STAIN THE SIDING AND TRIM. ALL SIDING, TRIM, SPECIAL ACCENT TRIM,
FASCIA, AND RAKE BOARDS SHALL RECEIVE TWO (2) COATS OF OIL BASE STAIN PRIOR
TO INSTALLATION. THE FIRST COAT SHALL BE APPLIED TO ALL SIDES OF THE BOARDS.
THE SECOND COAT SHALL BE APPLIED TO THE EXPOSED EXTERIOR SURFACE ONLY. THE
STAINING QUANTITY SHOWN IN THE ESTIMATED QUANTITIES TABLE IS CALCULATED
BASED ON THE AREA OF THE EXPOSED EXTERIOR SURFACE ONLY. UNIT BID PRICES
SHALL ACCOUNT FOR ALL COATS OF STAIN: ONE COAT APPLIED TO ALL SIDES OF THE
BOARDS IN ADDITION TO THE SECOND COAT APPIED TO THE EXPOSED EXTERIOR
SURFACE.
APPLY BOTH COATS BY BRUSH. THE DRYING TIME BETWEEN COATS IS 24 HOURS. TO
AVOID LAP MARKS, MAINTAIN A CONTINUOUS WET EDGE. THE LAP AND BRUSH MARKS
SHALL NOT BE EVIDENT ON THE DRIED FILM. AVOID STAINING IN DIRECT HOT
SUNLIGHT. DO NOT APPLY IF AIR, PRODUCT, AND SURFACE TEMPERATURES ARE BELOW
50 DEGREES F (10 DEGREES C) OR IF RAIN IS THREATENING. STAIN SHALL BE STIRRED
THOROUGHLY PRIOR TO USE AND STIRRED AGAIN PERIODICALLY DURING THE JOB TO
ENSURE EVEN COLOR AND HIDE. THINNING OF THE STAIN IS NOT PERMITTED.
BEFORE APPLICATION OF ANY STAIN TO THE BRIDGE, THE CONTRACTOR SHALL SUBMIT
FOR APPROVAL OF STAIN SAMPLES APPLIED TO ACTUAL SIDING AND TRIM BOARDS TO
BE USED ON THIS PROJECT. SIDING AND TRIM STAIN SHALL BE A LIGHT NATURAL
WOOD TONE. A DARKER STAIN/PAINT, TO BE APPROVED BY THE COUNTY ENGINEER'S
OFFICE, SHALL BE APPLIED TO THE ACCENT TRIM OVER THE WINDOWS. SIDING
STAIN/PAINT SHALL BE THE FOLLOWING OR APPROVED EQUIVALENT:
1. HARRISON: WOODUCK SEMI-TRANSPARENT STAIN
2. SHERWIN-WILLIAMS SEMI-TRANSPARENT OIL-BASED TONER
3. PRATT & LAMBERT STAINSHIELD SEMI-TRANSPARENT OIL DECK & SIDING STAIN
ITEM 521, BRIDGE TIMBER, MISC.: PRATT TRUSSES, GLULAM:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE MAIN TRUSS MEMBERS. THIS
WORK SHALL INCLUDE THE GLULAM PRATT TRUSS ELEMENTS, THE GLULAM
END-FRAMING, AND THE GLULAM GUIDERAIL. THIS ITEM SHALL ALSO INCLUDE THE
APPLICATION OF THE PRESERVATIVE TREATMENT FOR THE GLULAM PRATT TRUSS
COMPONENTS, AS INDICATED IN THE TIMBER SUMMARY TABLE.
THE PRATT TRUSS SHALL HAVE A 3" CAMBER TO ACCOUNT FOR DEAD LOAD
DEFLECTION. SINCE THE CAMBER IS SMALL RELATIVE THE SPAN LENGTH OF THE PRATT
TRUSS, IT IS NOT NECESSARY TO FABRICATE THE CAMBER INTO THE UPPER AND
LOWER CHORD MEMBERS OF THE PRATT TRUSS. INSTEAD, THE CAMBER MAY BE
DEVELOPED IN THE FIELD DURING THE TRUSS ASSEMBLY PROCESS, BY ADJUSTING
THE POSITION OF THE TRUSS ELEMENTS PRIOR TO INSTALLING AND TIGHTENING THE
FASTENERS AND DIAGONAL RODS. FOR THE PURPOSES OF FIELD OBSERVATION,
NOTIFY THE ENGINEER THREE (3) DAYS PRIOR TO INSTALLING THE CAMBER AND
TIGHTENING THE PRATT TRUSS CONNECTIONS. CAMBER INSTALLATION SHALL BE
INCLUDED FOR PAYMENT UNDER THIS ITEM.
ITEM 521, BRIDGE TIMBER, MISC.: FLOOR SYSTEM, GLULAM:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE GLULAM PORTION OF THE FLOOR
SYSTEM. THIS WORK SHALL INCLUDE THE FOLLOWING GLUED LAMINATED TIMBER
COMPONENTS: TRANSVERSE FLOOR BEAMS, SPREADER BEAMS, AND LONGITUDINAL
DECK PANELS. THIS ITEM SHALL ALSO INCLUDE THE APPLICATION OF THE
PRESERVATVE TREATMENT FOR THE GLULAM FLOOR SYSTEM COMPONENTS, AS
INDICATED IN THE TIMBER SUMMARY TABLE.
ITEM 521, BRIDGE TIMBER, MISC.: ROOF SYSTEM, GLULAM:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE GLULAM PORTION OF THE ROOF
SYSTEM. THIS WORK SHALL INCLUDE THE FOLLOWING GLUED LAMINATED TIMBER
COMPONENTS: ROOF TRUSS UPPER CHORDS, ROOF TRUSS LOWER CHORDS, ROOF
TRUSS DIAGONAL MEMBERS, AND GABLE TRUSS BLOCKING.
ITEM 521, BRIDGE TIMBER, MISC.: ROOF SYSTEM, MISC.:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE SOLID SAWN TIMBER PORTION OF
THE ROOF SYSTEM. THIS WORK SHALL INCLUDE THE FOLLOWING SOLID SAWN TIMBER
COMPONENTS: TIMBER GUSSETS, PURLINS, AND ANY OTHER MISCELLANEOUS TIMBER
BLOCKING REQUIRED TO INSTALL THE ROOF SYSTEM.
* REFER TO THE SUPERSTRUCTURE NOTES FOR METHODS OF PRESERVATIVE TREATMENT AND MINIMUM ALLOWABLE STESSES.
THIS ITEM SHALL ALSO INCLUDE ALL TEMPORARY AND PERMANENT BRACING
REQUIRED TO MAINTAIN STABILITY OF THE ROOF TRUSS SYSTEM DURING
CONSTRUCTION. ROOF TRUSSES MUST BE SECURELY BRACED PRIOR TO AND DURING
THE INSTALLATION OF THE ROOF PURLINS AND ROOFING MATERIAL.
ITEM 521, BRIDGE TIMBER, MISC.: PRATT TRUSSES, MISC.:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE SOLID SAWN TIMBER PORTION OF
THE PRATT TRUSSES. THIS WORK SHALL INCLUDE THE FOLLOWING SOLID SAWN
TIMBER COMPONENTS: UPPER AND LOWER CHORD KNEE BRACES, UPPER CHORD
BLOCKING, SPACER BLOCKING BETWEEN MOUNTING BRACKETS FOR PRATT TRUSS
VERTICALS, SPACER BLOCKING BETWEEN END-FRAMING ELEMENTS, AND ANY OTHER
MISCELLANEOUS TIMBER BLOCKING REQUIRED TO ASSEMBLE THE PRATT TRUSSES.
THIS ITEM SHALL ALSO INCLUDE THE APPLICATION OF THE PRESERVATIVE TREATMENT
FOR THE SOLID SAWN TIMBER COMPONENTS OF THE PRATT TRUSS, AS INDICATED IN
THE TIMBER SUMMARY TABLE.
ERECTION, BRACING AND SHORING PLANS: THE UPPER CHORDS OF PRATT TRUSSES
MUST BE ADEQUATELY BRACED AFTER THE PRATT TRUSSES ARE SET INTO PLACE, AND
BEFORE ANY ADDITIONAL DEAD LOAD (BEYOND THE SELF-WEIGHT OF THE PRATT
TRUSSES) IS APPLIED TO THE TRUSSES. NO LIVE LOAD INCLUDING THE WEIGHT OF ANY
EQUIPMENT SHALL BE APPLIED TO THE PRATT TRUSSES PRIOR TO THE BRACING OF
THE UPPER CHORDS. THE UPPER CHORD BRACING AND ANY REQUIRED SHORING
SHALL NOT BE REMOVED UNTIL THE FLOOR BEAMS ARE IN PLACE AND THE SAG RODS,
ROOF TRUSSES, AND ROOF PURLINS ARE FULLY INSTALLED AND PROPERLY ANCHORED
TO THE UPPER CHORD OF THE PRATT TRUSSES. THE CONTRACTOR SHALL ASSUME
FULL RESPONSIBILITY FOR THE DESIGN OF THE "ERECTION, BRACING AND SHORING
PLANS." THREE (3) SETS OF THE "ERECTION, BRACING AND SHORING PLANS," WHICH
SHALL INCLUDE THE INFORMATION DESCRIBED IN THIS NOTE, SHALL BE SUBMITTED
TO THE ENGINEER OF RECORD FOR APPROVAL AT LEAST THIRTY (30) DAYS BEFORE THE
ACTUAL WORK IS TO BEGIN. THE PLANS SHALL BE PREPARED BY A PROFESSIONAL
ENGINEER REGISTERED IN THE STATE OF OHIO, AND EXPERIENCED IN THIS TYPE OF
DESIGN. PLANS FOR SHORING AND BRACING OF THE MAIN TRUSSES SHALL INCLUDE
AT LEAST THE FOLLOWING:
1. THE SIGNATURE, NUMBER AND SEAL OF THE PROFESSIONAL ENGINEER
REGISTERED IN THE STATE OF OHIO WHO PREPARED THE SUBMITTAL.
2. DRAWINGS SHOWING THE UPPER CHORD BRACING AND ANY ADDITIONAL SHORING
THAT MAY BE REQUIRED. THESE DRAWINGS SHALL INCLUDE THE PHYSICAL
AND DIMENSIONAL LOCATIONS OF THE BRACING AND METHODS OF ATTACHMENT TO
THE PRATT TRUSS MEMBERS (ADDING HOLES TO THE STRUCTURAL GLULAM AND
TIMBER MEMBERS SHALL NOT BE PERMITTED).
3. A SEQUENCE OF CONSTRUCTION OPERATIONS FOR THE INSTALLATION AND BRACING
OF THE PRATT TRUSSES, THE INSTALLATION OF THE FLOOR SYSTEM, AND THE
INSTALLATION OF THE ROOF SYSTEM.
PAYMENT FOR THIS WORK SHALL BE INCLUDED WITH ITEM 521, BRIDGE TIMBER,
MISC.: PRATT TRUSSES, MISC. THIS PAYMENT SHALL INCLUDE FULL COMPENSATION
FOR ALL NECESSARY TOOLS, LABOR, EQUIPMENT, MATERIALS, AND INCIDENTALS
NECESSARY TO COMPLETE THE WORK IN CONFORMANCE WITH THESE REQUIREMENTS
AND TO THE SATISFACTION OF THE ENGINEER.
ITEM 521, BRIDGE TIMBER, MISC.: FLOOR SYSTEM, MISC.:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE SOLID SAWN TIMBER PORTION OF
THE FLOOR SYSTEM. THIS WORK SHALL INCLUDE THE FOLLOWING SOLID SAWN
TIMBER COMPONENTS: TIMBER CURB, CURB BLOCKING, FLOOR BEAM BEARING
BLOCKS, AND ANY OTHER MISCELLANEOUS TIMBER BLOCKING REQUIRED TO INSTALL
THE FLOOR SYSTEM. THIS ITEM SHALL ALSO INCLUDE THE APPLICATION OF THE
PRESERVATIVE TREATMENT FOR THE SOLID SAWN TIMBER COMPONENTS OF THE
FLOOR SYSTEM, AS INDICATED IN THE TIMBER SUMMARY TABLE.
ITEM 521, BRIDGE TIMBER, MISC.: SIDING AND TRIM:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE SIDING ELEMENTS. THIS WORK
SHALL INCLUDE THE FOLLOWING SOLID SAWN TIMBER COMPONENTS: SIDING GIRTS
AND NAILERS, VERTICAL SIDING BOARDS, TRIM, SPECIAL ACCENT TRIM, FASCIA, RAKE
BOARD, AND WINDOW SILL PLATES.
ITEM 521, BRIDGE TIMBER, MISC.: BEARING BLOCKS:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE SOLID SAWN TIMBER BLOCKING
FOR THE PRATT TRUSS BEARING LOCATIONS AND FOR THE DECK BEARING LOCATIONS.
THIS ITEM SHALL ALSO INCLUDE THE APPLICATION OF THE PRESERVATIVE TREATMENT
FOR THE BEARING BLOCKS; ALL TIMBER BEARING BLOCKS SHALL BE WHITE OAK AND
TREATED FOR SOIL CONTACT WITH TWO HEAVY COATS OF CCA.
ITEM 530, SPECIAL-STRUCTURE: WOOD SHAKE ROOFING:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE WOOD SHAKE ROOFING PER THE
MANUFACTURER'S SPECIFICATIONS, THE RIDGE CAP, AND THE METAL DRIP EDGE.
ROOFING FELT IS NOT REQUIRED. THE WOOD SHAKES SHALL BE EITHER TAPERSAWN
(SAWN ON BOTH FACES) OR HANDSPLIT/RESAWN (SPLIT ON EXPOSED FACE AND SAWN
ON OTHER FACE). IF USED, HANDSPLIT/RESAWN SHAKES MUST BE #1 GRADE OR
BETTER.
SHAKES SHALL BE A MINIMUM OF 1/2" THICK BY 24" LONG (±1/2"). SHAKES MAY
RANGE IN WIDTH FROM A MINIMUM OF 4" TO A MAXIMUM OF 14". FASTENERS USED TO
ANCHOR SHAKES TO PURLINS SHALL BE OF ADEQUATE LENGTH TO PENETRATE THE
PURLINS AT LEAST 1/2".
ITEM 530, SPECIAL-MISC.: BRIDGE SIGNAGE:
THIS ITEM SHALL INCLUDE ALL MATERIALS, LABOR, EQUIPMENT, AND INCIDENTALS
REQUIRED TO FABRICATE, SUPPLY AND INSTALL THE SIGNAGE AT THE ENDS OF THE
BRIDGE. THIS WORK SHALL INCLUDE THE FOLLOWING COMPONENTS: ARCHED
PANELS/TRIM, SIGNAGE MATERIAL, LETTERING, AND MOUNTING HARDWARE. THE
CONTRACTOR/ FABRICATOR SHALL SUBMIT SIGNAGE SHOP DRAWINGS AND MOCK-UPS
TO ENGINEER FOR APPROVAL PRIOR TO FABRICATION. SHOP DRAWINGS / MOCK-UPS
SHALL INCLUDE DETAILED LAYOUT, MATERIAL SAMPLES, LETTERING EXAMPLES, COLOR
SCHEME, AND MEANS OF ATTACHMENT TO THE STRUCTURE INCLUDING HARDWARE
DESIGN. SHOP DRAWINGS AND MOCK-UPS SHALL BE INCLUDED UNDER THIS PAY ITEM.