Bridge Deck Formwork

7/25/2019 Bridge Deck Formwork

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TRUS JOIST FORM BEAMPRODUCT INFORMATION

Form Beam products have higher strength in the edge orientation. Square Form Beams must be installed in theedge orientation unless the formwork drawings specifically permit flat orientation. Consult the formwork designer

if you have questions about proper orientation.

IDENTIFICATION OF FORM BEAMS

04.93

Mill Number

34 2.0E SP

FORMWORKGrade and Species

Independent Third PartyInspection Agency

Month and Year of Manufacture

ORIENTATION OF FORM BEAMS

EDGE ORIENTATION

FLAT ORIENTATION

MicrollamLVL Form Beams are identified with continuous

embossing along both edges of the member. Information

embossed on the member includes the month and year of

manufacture, the Trus Joist mill number, the grade andspecies and the third-party inspection agency logo.

Edge orientation refers to the application

of load parallel to the glue lines.

Flat orientation refers to application of

load perpendicular to the glue lines.

CAUTION:

Microllam LVL

2

LOAD

END VIEW

LOAD

END VIEW


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Make sure that everyone who handles Form Beams is aware of their value.

Use a forklift or crane to unload trucks and move Form Beams around the job site. Do not drop Form Beams from trucks.

Form Beams should be moved by hand or crane when stripped. Do not drop Form Beams.

Do not use Form Beams for loading ramps or other unintended purposes. Microllam LVL scaffold planks are available from your Trus Joist dealer.

Store Form Beams in a level, well-drained location away from equipment traffic areas. Set bundles of Form Beams on stickers that provide air circulation

under the bundle and easy access for forklifts. Place stickers approximately every ten feet or less. Stickers between stacked bundles of Form Beams must

align with those on the ground.

Storage conditions must provide protection from rain and ground moisture. Cover Form Beams with a material that will shed rain, but is porous enough to

allow moisture to escape, such as the wrapping on bundles of new Form Beams. Plastic tarps will trap ground moisture unless arranged in such a way as toallow air circulation under the tarp.

Wet Form Beams that are to be returned to storage must have stickers placed between layers in the bundle to allow air circulation around each piece.

Stickers must align vertically. Failure to take these precautions may result in warping, cupping, or decay.

SLIPP

ERYW

HEN

WETO

RFRO

STY

Do not cut, notch, or drill Form Beams except as shown on the formwork drawings.

Inspect all Form Beams for damage before using them. Damaged Form Beams must be removed and replaced immediately. Failure to remove and replace

damaged Form Beams may result in collapse of the formwork.

Check for:

Damage due to overloading (e.g. crushed bearing areas, stress cracks).

Damage due to dropping, forklifts, or other improper handling.

Improper saw cuts, drill holes, or notches.

Signs of decay or insect damage.

Protect products from sun and water

Use stickers at 10 on-center tokeep products above groundand out of mud and water

STORAGE AND HANDLING OF FORM BEAMS

INSPECTION OF FORM BEAMS

WARRANTY:Trus Joist warrants that its concrete forming products will be free from manufacturing errors or defects in workmanship and material.

The above warranty is in lieu of all other warranties, express or implied. The implied warranties of merchantability and fitness for a particular purposeare excluded from this warranty. Consequential and indirect damages are hereby excluded.

ALIGN STICKERS VERTICALLY

3

CHECK FOR IMPACT DAMAGE

CHECK FOR FORKLIFT DAMAGE

CHECK FOR DAMAGE

DUE TO DROPPING

CHECK FOR DAMAGE

CAUSED BY OVERLOADING


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TRUS JOISTBRIDGE DECK FORMWORK INSTALLATION GUIDE

This guide contains minimum criteria that apply to all bridge deck formwork installations. Consult the formwork drawings for informa-tion about a specific project. Contact your supervisor, the formwork designer, or Trus Joist if you are in doubt about the proper use ofTrus Joist Form Beams. Failure to do so may result in exposure to unsafe conditions which could lead to injury or death of persons

on the job site.

4

OVERHANG BRACKET ASSEMBLY

DOUBLE FORM BEAM WALER

FORM BEAM JOIST


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Form Beam joists and double Form Beamwalers suspended from steel bridge girdersby coil bolt hangers. Refer to the formworkdrawings for waler and joist spacings. Thehigh strength of Trus Joist Form Beamspermits wider joist and waler spacings. Verifythe adequacy of the plywood deck and coilbolt hangers. Refer to the formwork drawingsfor proper joist orientation.

A

TYPICAL BRIDGE DECK FORMWORK SYSTEMS

Form Beam joists and double Form Beamwalers suspended from pre-cast concretebridge girders by coil bolt hangers. Refer tothe formwork drawings for waler and joistspacings. The high strength of Trus JoistForm Beams permits wider joist and walerspacings. Verify the adequacy of the plywooddeck and coil bolt hangers. Refer to the form-work drawings for proper joist orientation.

Form Beam joists supported by two sets ofdouble Form Beam walers and adjustablesteel supports. Refer to the formwork draw-ings for waler and joist spacings. The highstrength of Trus Joist Form Beams permitswider joist and waler spacings. Verify theadequacy of the plywood deck and adjustablesteel supports. Refer to the formwork draw-ings for proper joist orientation.

Form Beam joists suspended from steel orpre-cast concrete bridge girders by adjustablehangers. Refer to the formwork drawings for

joist spacing. The high strength of Trus JoistForm Beams permits wider joist spacings.Verify the adequacy of the plywood deck andadjustable hangers.

B

C

D

5

SEE DETAIL SECTION A

FORM BEAM JOISTby TRUS JOIST

PLYWOOD

SEE DETAIL SECTION B


PLYWOOD

DOUBLE FORM BEAM WALER by TRUS JOIST

COIL BOLT HANGER

DOUBLE FORM BEAM WALER by TRUS JOIST

COIL BOLT HANGER

PRE-CAST CONCRETE GIRDER


FORM BEAM JOIST by TRUS JOIST

ADJUSTABLE HANGER

PLYWOOD

DOUBLE FORM BEAM WALERby TRUS JOIST

PRE-CAST CONCRETE GIRDERS


STEEL GIRDER

ADJUSTABLE STEEL SUPPORTS

STEEL GIRDER

SEE DETAIL SECTION C

PLYWOODSEE DETAIL SECTION D


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TRUS JOIST FORM BEAM DETAILS

DETAIL A1 DETAIL B1 DETAIL B2

DETAIL B3 DETAIL B4 DETAIL C1

DOUBLE FORM BEAM WALER ASSEMBLYDETAIL D1

6

COIL BOLT HANGER

STEEL GIRDER

DOUBLE FORM BEAMWALER by TRUS JOIST


FORM BEAM by TRUS JOIST

CUT CANNOT EXTEND PASTINSIDE FACE OF BEARINGUNLESS SHOWN ON APPROVEDFORMWORK DRAWINGS ORAPPROVED BY THE FORMWORKDESIGNER.

COIL BOLT HANGER


SAWN LUMBER SLEEPER


COIL BOLT HANGER

PLATE WASHER

PRE-CAST CONCRETE GIRDER PLATE WASHER




ADJUSTABLE STEEL COLUMNSUPPORT CANNOT BE PLACEDOUTSIDE A DISTANCE d(DEPTH OF DOUBLE SUPPORT)FROM THE INSIDE FACE OFBEARING, UNLESS SHOWN ONAPPROVED FORMWORK DRAW-INGS AND/OR APPROVED BYTHE FORMWORK DESIGNER.

FORM BEAM by TRUS JOIST

COIL BOLT HANGER

FORM BEAM WALER

by TRUS JOIST


COIL BOLT HANGER

PLATE WASHER


ADJUSTABLE HANGER

WOOD BLOCK

STEEL GIRDER


PLATE WASHER



WALER MUST BEARFULLY ON GIRDER

TWO ROWS OF16d COMMON AT 12 O.C.

WOOD SPACER STRIPS: THICKNESS EQUAL TO COIL BOLT DIAMETER 8 WIDE OR AS REQUIRED TO AVOID SPLITTING RECESSED FROM THE ENDS OF THE WALER TO

ACCOMODATE THE COIL BOLTS


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Notes:1. Bearing length requirements are calculated on the basis of an allowable compression perpendicular-to-grain design value, Fc!, equal to

638 psi. The minimum requirement is 1".

2. Bearing across the full width of the member must be provided.

3. The supporting member is assumed to be adequate.

Minimum Lateral Restraint Requirements:

Joists: Depth to width ratio " 2 to 1; none required.

2 to 1 " depth to width ratio < 4 to 1; all points of bearing (e.g.,

solid blocking).

Depth to width ratio # 4 to 1; 24" on-center along the loaded

edge of the member (typically provided by attachment to ply-

wood sheathing with minimum 8d nails).

Walers: Both points of bearing and at mid-span.

General: Lateral restraint requirements for a particular project may bemore stringent. Consult the formwork drawings for particular

requirements and means of providing lateral restraint.

WARNING

Formwork is unstable until laterally braced as required to prevent buckling

or roll-over.

Lateral bracing must be tied to a rigid element in the structure.

Do not allow workers to walk on unbraced formwork. SERIOUS INJURY

MAY RESULT!

Do not stack materials on unbraced formwork.

Lateral Restraint of FORM BEAM walers

Bearing Length Requirements

3000 lbs Reaction 6000 lbs Reaction 9000 lbs Reaction

Double 1" Form Beam Walers 1" 3" 4"

1000 lbs Reaction 2000 lbs Reaction 3000 lbs Reaction

1" Form Beam Joists 1" 2" 3"



Depth

Width

Applied Load

7

GENERALNOTES

Applied Load

TOE NAIL IN SUCH A MANNERAS NOT TO SPLIT FORM BEAM

SPECIAL CLEATS CAN BE USED


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WOOD THIS GOOD DOESNT GROW ON TREES

Trus Joists selection of concrete formwork products includesMicrollam LVL Form Beams and Form-IJoists. For design andapplication efficiency, contact your Trus Joist Representative

or call 1-800-441-4852 for additional information.

Microllam LVL is a precision-engineered laminated veneer lumber manufactured by Trus Joist.Veneers are laid up with grain parallel and bonded together under heat and pressure to produce a high quality

lumber up to three times more consistent than conventional sawn lumber. Wood this good doesnt grow on trees.

Reorder 3421July 2001

, Microllam, Parallam and TJ-Beam are registered trademarks and Form-I and Trus Joist are trademarks of Trus Joist, A Weyerhaeuser Business, Boise, Idaho.Copyright 2001 by Trus Joist

200 E. Mallard Drive Boise, ID 83706(208) 364-3600

1-800-423-5808

Documents

Bridge Deck Formwork