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Wind Bracing SystemsWind Bracing Systems

22

Wind Bracing SystemsWind Bracing Systems

HOWBRACING

WORKS

33

Wind Bracing SystemsWind Bracing SystemsWind Bracing Systems

Load Dispersal

The WIND load on Endwall panels...44


Load Dispersal

is dispersed through Endwall framing...

55


Load Dispersal

into the Continuous Purlin system.66


Load Dispersal

The Purlins transfer the load...

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Load Dispersal

into the Buildings foundation.1414

Standard EP LocationStandard EP Location

1515

Roof Rods Break at Endpost(s)Roof Rods Break at Endpost(s)

1616

Wind BracingWind Bracing

If possible, keepIf possible, keep endpostendpost spacingspacing

similarsimilar at each endwall for a moreat each endwall for a moreefficient bracing pattern.efficient bracing pattern.

1717


StandardStandardBracingBracingMethodsMethods

1818

Diagonal BracingDiagonal BracingDiagonal Bracing

VP standard bracing utilizes DiagonalVP standard bracing utilizes DiagonalBracing in the Roof and Walls.Bracing in the Roof and Walls.

The bracing design is determined by:The bracing design is determined by: Building Loads & CodeBuilding Loads & Code

Building SizeBuilding Size

Building LocationBuilding Location

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Diagonal Rod BracingDiagonal Rod BracingDiagonal Rod Bracing

Slightly more expensive thanSlightly more expensive thancable bracingcable bracing

StiffestStiffest bracing systembracing systemavailableavailable Eave

Floor

Notes about Diagonal Rod Bracing:

2020

Diagonal RodsDiagonal Rods

2121


2222


2323

Diagonal Rod Bracing OptionsDiagonal Rod Bracing OptionsDiagonal Rod Bracing Options

Eave

Floor

2/3 bay space minimum

2424

Brace Rod to FloorBrace Rod to Floor

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Alternative Bracing MethodsAlternative Bracing MethodsAlternative Bracing Methods

InexpensiveInexpensive Maximum building width of 50Maximum building width of 50

Maximum eave height of 18Maximum eave height of 18

100 mph maximum wind speed100 mph maximum wind speed

Minimum 3 baysMinimum 3 bays Call your Service Center ifCall your Service Center ifcloseclose to theseto theseparametersparameters

Notes About Torsional Bracing

3333


Portal BracingPortal Brace Includes:

Portal BeamPortal BeamKnee BracesKnee BracesAdditional columnAdditional column

supportsupport

Clips, bolts & nutsClips, bolts & nuts

3434

Portal BracingPortal Bracing

3535


More expensive than rodsMore expensive than rods

Flexible, not as stiff asFlexible, not as stiff asdiagonal bracingdiagonal bracing

Maximum eave height of 20Maximum eave height of 20

Special clearances possibleSpecial clearances possible

Notes About Portal Bracing

3636


3737


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3939

Portal Bracing???Portal Bracing???

4040


Portal Frame Includes:

Portal Frames

Portal Frame BeamPortal Frame Beam Portal Frame ColumnsPortal Frame Columns Load Transfer BracketsLoad Transfer Brackets

or Clipsor Clips

Bolts and NutsBolts and Nuts

4141

Portal FramePortal Frame

4242


More expensive than rodsMore expensive than rods Relatively stiffRelatively stiff

Special clearancesSpecial clearancespossiblepossible

Notes About Portal Frames

4343

Portal Frame

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Portal FramePortal Frame((typtyp. Anchor Bolt Detail). Anchor Bolt Detail)

4545


Eave

Floor

May be more economical in someMay be more economical in somecasescases

Combination of Rods and Portal Frame

4646

Partial Height Portal FramePartial Height Portal Frame

4747

Bracing ComparisonsBracing Comparisons(Building Size = 200 x 300 x 19, 99BOCA, 80(Building Size = 200 x 300 x 19, 99BOCA, 80

MPH WindMPH Wind -- Book Price Shown)Book Price Shown)

$0

$1,000

$2,000

$3,000

$4,000

$5,000

$6,000

$7,000

$8,000

Bracing Type

Rods

Portal Brace

Portal Frame

4848

Strut Bracing at WallStrut Bracing at Wall

4949

Caution!Caution!Caution!

Bracing types may not be mixed in

any single plane...however, it is OK

to mix them within the same bay

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Rod Bracing at Truss FrameRod Bracing at Truss Frame

5151

Rod Bracing at Truss FrameRod Bracing at Truss Frame

5252

Rod Bracing at CraneRod Bracing at Crane

5353

Rod Bracing at FacadeRod Bracing at Facade

5454

No Bracing?!?!?!No Bracing?!?!?!No Bracing?!?!?!

As erection proceeds all Brace Rods,As erection proceeds all Brace Rods,

Flange Braces, Struts, Purlin/Girt LapsFlange Braces, Struts, Purlin/Girt Laps

should be installed before proceeding.should be installed before proceeding.

All buildings will require someAll buildings will require some

temporary bracing until all erection istemporary bracing until all erection is

complete !complete ! Do NOT take any chances !Do NOT take any chances !

5555

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What Wind Can Do!What Wind Can Do!

5858

Bracing TipsBracing Tips

nn Bracing most effective atBracing most effective at 45 degree45 degreeangleangle

nn XX--bracingbracing always most economicalalways most economical

nn ConsiderConsider Int.ColInt.Col. Bracing. Bracing at wideat widebuildingsbuildings

nn Consider Consider shear wallsshear walls with masonry, with masonry,etc.etc.

5959

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