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Wall Bridging

BuckleBridge
* Image of BuckleBridge®

TSN's bridging connections work together with almost any stud spacing to resist weak axis buckling and torsional rotation of members. Used in both interior and exterior applications, TSN's line of bridging products can save hours of installation time and thousands of dollars in a single project.

Quality:

  • Load-rated positive mechanical attachment at each stud
  • Utilizes only certified, 50ksi steel
  • Accommodate most wall stud spacing, including 8", 12", 16" & 24" centers

Value:

  • Fast installation, where no clamping or welding is required
  • Guide holes provided for quick and accurate fastener placement
  • TSN's bridging products work flawlessly together as a system
Downloads Download Technical data Tech Sheet |
Product Information

Bridging for load bearing studs is needed to resist the following forces:

  1. Weak axis buckling induced by axial compression load.
  2. Torsion induced by wind load.

AISI Wall Stud Design Standard (S211-07) and AISI Specification (S100-07) provide the load and stiffness requirements for bracing members due to the effects of axial compression load and wind load as given in the on the following tab. Contact TSN Technical Support (888) 474-4876 if further information is needed regarding wall bridging design.

Fig1
As axial compression and lateral wind loads are applied, wall studs react with weak axis buckling and torsional rotation. To offset these forces, a form of bridging is incorporated into the wall system. Bridging loads accumulate over the run of the wall, requiring transfer of lateral forces in bridging at columns or to the floor slab into the structural load path to the foundation.
Bridging Requirements
AISI Wall Stud Design Standard (S211-07) AISI Specification (S100-07)
Stud Axial Compression Load Capacity:
Bracing Load PBrace* = 0.02 x Stud Axial Strength (PStud) x # of studs braced.
Load Capacity:
Bracing Load PBrace* = 0.01 x Stud Axial Strength (PStud) x # of studs braced.

Stiffness Capacity:
Lateral Stiffness βBrace = 4 x Stud Nominal Axial Strength / Unbraced Length (for one row of bridging).

Lateral Stiffness βBrace = 6 x Stud Nominal Axial Strength / Unbraced Length (for two rows of bridging).

Wind Load Capacity:
Twist Load PL = 1.5 x Wind Load x Bridging Spacing x Stud Spacing x m(Shear Center Distance) / Stud Depth. Twist Moment M1 = PL x Stud Depth.
* Bracing forces accumulate over the run of the wall until anchored.
 
Bridging load bearing studs against torsion by wind.
Ref1
Ref3
 
Bridging load bearing studs against weak axis buckling.
Ref2
Ref4
Channel / Clip Bridging Chart: Design Wind Pressure and Unsupported Wall Height
Section 10psf* 20psf 25psf
10' 12' 10' 12' 14' 16' 10' 12' 14' 16'
600S162-33, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC1 (2) BB / BC1 (2) BB / BC1 N/A BB / BC1 (2) BB / BC1 (2) BB / BC1 N/A
600S162-43, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC1 (2) BB / BC1 (2) BB / BC1 (3) BB / BC1 BB / BC1 (2) BB / BC1 (2) BB / BC1 (3) BB / BC1
600S162-54, 50 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC1 (2) BB / BC1 (2) BB / BC1 (3) BB / BC1 BB / BC1 (2) BB / BC1 (2) BB / BC1 (3) BB / BC1
600S162-68, 50 ksi CRC / BC1 CRC / BC1 CRC / BC1 (2) CRC / BC1 (2) CRC / BC1 (3) CRC / BC1 CRC / BC1 (2) CRC / BC1 (2) CRC / BC1 (3) CRC / BC1
600S162-97, 50 ksi CRC / BC1 CRC / BC1 CRC / BC1 (2) CRC / BC1 (2) CRC / BC1 (3) CRC / BC1 CRC / BC1 (2) CRC / BC1 (2) CRC / BC1 (3) CRC / BC1
800S162-33, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S162-43, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S162-54, 50 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S162-68, 50 ksi CRC / BC800 CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
800S162-97, 50 ksi CRC / BC800 CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
600S200-33, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC1 (2) BB / BC3 (2) BB / BC3 (3) BB / BC3 BB / BC3 (2) BB / BC3 (2) BB / BC3 N/A
600S200-43, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC1 (2) BB / BC1 (2) BB / BC1 (3) BB / BC1 BB / BC3 (2) BB / BC3 (2) BB / BC3 (3) BB / BC3
600S200-54, 50 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC1 (2) BB / BC1 (2) BB / BC1 (3) BB / BC1 BB / BC3 (2) BB / BC3 (2) BB / BC3 (3) BB / BC3
600S200-68, 50 ksi CRC / BC1 CRC / BC1 CRC / BC1 (2) CRC / BC1 (2) CRC / BC1 (3) CRC / BC1 CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3
600S200-97, 50 ksi CRC / BC1 CRC / BC1 CRC / BC1 (2) CRC / BC1 (2) CRC / BC1 (3) CRC / BC1 CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3
800S200-33, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S200-43, 33 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S200-54, 50 ksi BB or
CRC / BC1
(2) BB or
(2) BB / BC1
BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S200-68, 50 ksi CRC / BC800 CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
800S200-97, 50 ksi CRC / BC800 CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
 
Channel / Clip Bridging Chart: Design Wind Pressure and Unsupported Wall Height
Section 30psf 40psf 50psf
10' 12' 14' 16' 10' 12' 14' 16' 10' 12' 14' 16'
600S162-33, 33 ksi BB / BC3 (2) BB / BC3 N/A N/A BB / BC3 N/A N/A N/A BB / BC3 N/A N/A N/A
600S162-43, 33 ksi BB / BC3 (2) BB / BC3 (2) BB / BC3 N/A BB / BC3 (2) BB / BC3 N/A N/A BB / BC3 (2) BB / BC3 N/A N/A
600S162-54, 50 ksi BB / BC3 (2) BB / BC3 (2) BB / BC3 (3) BB / BC3 BB / BC3 (2) BB / BC3 (2) BB / BC3 N/A BB / BC3 (2) BB / BC3 N/A N/A
600S162-68, 50 ksi CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3 CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3 CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 N/A
600S162-97, 50 ksi CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3 CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3 CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3
800S162-33, 33 ksi BB / BC800 (2) BB / BC800 (2) BB / BC800 N/A BB / BC800 (2) BB / BC800 N/A N/A BB / BC800 N/A N/A N/A
800S162-43, 33 ksi BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 N/A BB / BC800 (2) BB / BC800 N/A N/A
800S162-54, 50 ksi BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 N/A
800S162-68, 50 ksi CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
800S162-97, 50 ksi CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
600S200-33, 33 ksi BB / BC3 (2) BB / BC3 N/A N/A BB / BC600 (2) BB / BC600 N/A N/A BB / BC600 N/A N/A N/A
600S200-43, 33 ksi BB / BC3 (2) BB / BC3 (2) BB / BC3 (3) BB / BC3 BB / BC600 (2) BB / BC600 (2) BB / BC600 N/A BB / BC600 (2) BB / BC600 N/A N/A
600S200-54, 50 ksi BB / BC3 (2) BB / BC3 (2) BB / BC3 (3) BB / BC3 BB / BC600 (2) BB / BC600 (2) BB / BC600 N/A BB / BC600 (2) BB / BC600 (2) BB / BC600 N/A
600S200-68, 50 ksi CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3 CRC / BC600 (2) CRC / BC600 (2) CRC / BC600 (3) CRC / BC600 CRC / BC600 (2) CRC / BC600 (2) CRC / BC600 N/A
600S200-97, 50 ksi CRC / BC3 (2) CRC / BC3 (2) CRC / BC3 (3) CRC / BC3 CRC / BC600 (2) CRC / BC600 (2) CRC / BC600 (3) CRC / BC600 CRC / BC600 (2) CRC / BC600 (2) CRC / BC600 (3) CRC / BC600
800S200-33, 33 ksi BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 N/A N/A BB / BC800 (2) BB / BC800 N/A N/A
800S200-43, 33 ksi BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 N/A BB / BC800 (2) BB / BC800 (2) BB / BC800 N/A
800S200-54, 50 ksi BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800 BB / BC800 (2) BB / BC800 (2) BB / BC800 (3) BB / BC800
800S200-68, 50 ksi CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
800S200-97, 50 ksi CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800 CRC / BC800 (2) CRC / BC800 (2) CRC / BC800 (3) CRC / BC800
Notes:
  • See also Curtain Wall BuckleBridge chart.
  • Stud spacing is fixed at 16". Bridging spacing for Channel / Clip Bridging is 5 ft. max.
  • Allowable pressure limited by flexural stength of stud calculated with torsional bracing assumed at the bridging spacing and kφ = 0.
  • Allowable pressure limited by stud deflection calculated with deflection limit equal to l/360. Listed wind pressures except 10 psf have been reduced by 0.70 as allowed by the IBC code.
  • BB and CRC allowable pressure limited by flexural strength of bridging member calculated as:
    Mall / (1.5 x Bridging Spacing x Stud Spacing x m (distance from stud web to shear center)).
  • Listed wind pressures represent calculated design wind pressures (1.0W based on IBC 2009 or 0.6W based on IBC 2012).
* For 10 psf wind pressure, it is assumed that gypsum board is installed on both sides of wall. The stud spacing here can be up to 24"
 
Nomenclature:
  • BB - BridgeBar 150 without clip to stud
  • CRC - Cold Rolled Channel
  • BB / BC1 - BridgeBar 150 and BridgeClip with (1) #10 screw fastener into BridgeBar 150 only
  • BB / BC3 - BridgeBar 150 & BridgeClip with (1) #10 screw fastener into BridgeBar 150 & (2) #10 screw fasteners into the web of the stud
  • BB / BC600 - BridgeBar 150 & BC600 with (2) #10 screw fasteners into BridgeBar 150 & (2) #10 screw fasteners into the web of the stud
  • BB / BC800 - BridgeBar 150 & BC800 with (2) #10 screw fasteners into BridgeBar 150 & (2) #10 screw fasteners into the web of the stud
  • BB (BridgeBar 150) is an alternative for Cold-Rolled Channel (CRC), which may also be used with TSN's bridging clips.
  • N/A indicates stud section is insufficient.
  • (2) or (3) preceding product indicates number of rows of bridging. If no number is shown, then (1) bridging row only.
BuckleBridge® Bridging Chart: Design Wind Pressure and Bridging Spacing
Section 20psf 25psf 30psf
10' 12' 14' 16' 10' 12' 14' 16' 10' 12' 14' 16'
600S162-33, 33 ksi BKB BKB (2) BKB N/A BKB BKB (2) BKB N/A BKB (2) BKB N/A N/A
600S162-43, 33 ksi BKB BKB BKB (2) BKB BKB BKB (2) BKB (3) BKB BKB BKB (2) BKB N/A
600S162-54, 50 ksi BKB BKB BKB (2) BKB BKB BKB BKB (2) BKB BKB BKB (2) BKB (2) BKB
600S162-68, 50 ksi BKB BKB BKB BKB BKB BKB BKB (2) BKB BKB BKB BKB (2) BKB
600S162-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
800S162-33, 33 ksi BKB BKB BKB (2) BKB BKB BKB (2) BKB (3) BKB BKB BKB (2) BKB N/A
800S162-43, 33 ksi BKB BKB BKB (2) BKB BKB BKB BKB (2) BKB BKB BKB  BKB (3) BKB
800S162-54, 50 ksi BKB BKB BKB BKB BKB BKB BKB (2) BKB BKB BKB BKB (2) BKB
800S162-68, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
800S162-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
600S200-33, 33 ksi BKB BKB BKB (2) BKB BKB BKB BKB N/A BKB BKB N/A N/A
600S200-43, 33 ksi BKB BKB BKB BKB BKB BKB BKB (2) BKB BKB BKB BKB (3) BKB
600S200-54, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
600S200-68, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
600S200-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
800S200-33, 33 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB (3) BKB
800S200-43, 33 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
800S200-54, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
800S200-68, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
800S200-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB BKB
 
BuckleBridge® Bridging Chart: Design Wind Pressure and Bridging Spacing
Section 40psf 50psf
10' 12' 14' 16' 10' 12' 14' 16'
600S162-33, 33 ksi BKB N/A N/A N/A BKB N/A N/A N/A
600S162-43, 33 ksi BKB (2) BKB N/A N/A BKB (2) BKB N/A N/A
600S162-54, 50 ksi BKB BKB (2) BKB N/A BKB (2) BKB N/A N/A
600S162-68, 50 ksi BKB BKB BKB (2) BKB BKB BKB (2) BKB N/A
600S162-97, 50 ksi BKB BKB BKB (2) BKB BKB BKB BKB (2) BKB
800S162-33, 33 ksi BKB (2) BKB N/A N/A BKB N/A N/A N/A
800S162-43, 33 ksi BKB BKB (2) BKB N/A BKB (2) BKB N/A N/A
800S162-54, 50 ksi BKB BKB BKB (2) BKB BKB BKB (2) BKB N/A
800S162-68, 50 ksi BKB BKB BKB (2) BKB BKB BKB BKB (3) BKB
800S162-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB (2) BKB
600S200-33, 33 ksi BKB (2) BKB N/A N/A BKB N/A N/A N/A
600S200-43, 33 ksi BKB BKB (2) BKB N/A BKB BKB N/A N/A
600S200-54, 50 ksi BKB BKB BKB N/A BKB BKB BKB N/A
600S200-68, 50 ksi BKB BKB BKB BKB BKB BKB BKB N/A
600S200-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB
800S200-33, 33 ksi BKB BKB N/A N/A BKB (2) BKB N/A N/A
800S200-43, 33 ksi BKB BKB BKB N/A BKB BKB BKB N/A
800S200-54, 50 ksi BKB BKB BKB BKB BKB BKB BKB (2) BKB
800S200-68, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB
800S200-97, 50 ksi BKB BKB BKB BKB BKB BKB BKB BKB
Notes:
  • Stud Spacing is fixed at 16"
  • Allowable pressure limited by flexural stength of stud calculated with torsional bracing assumed at the bridging spacing and kφ = 0.
  • Allowable pressure limited by stud deflection calculated with deflection limit equal to l/360. Listed wind pressures except 10 psf have been reduced by 0.70 as allowed by the IBC code.
  • BuckleBridge calculated twist moment (Reference AISI S100-07) is equal to:
    (1.5 x Wind Load x Bridging Spacing x Stud Spacing x m (distance from stud web to shear center)).
  • Listed wind pressures represent calculated design wind pressures (1.0W based on IBC 2009 or 0.6W based on IBC 2012).
 
Nomenclature:
  • BKB - BuckleBridge Using (1) #10 screw on alternate sides of the BuckleBridge at 3rd stud (48" o.c.) Use (2) #10 screws at end of wall run.
  • N/A indicates stud section is insufficient.
  • (2) or (3) preceding product indicates number of rows of bridging. If no number is shown, then (1) bridging row only.
BridgeBarICON

BridgeBar® (Bridging Channel)

BridgeBar® replaces cold-rolled channel (CRC) for wall bridging.

BridgeBar® Downloads: Download Technical data Tech Sheet | Download drawing file DWG | Download specification data Specs | Download BIM data BIM
 
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BridgeClip® (Secures Channel to Stud)

BridgeClip®, BC600 & BC800 secures BridgeBar® 150 or 1 ½” cold-rolled channel (CRC) to stud, resisting both lateral and twisting loads.

BridgeClip® Downloads: Download Technical data Tech Sheet | Download drawing file DWG | Download specification data Specs | Download BIM data BIM
 
BuckleBridgeICON

BuckleBridge® (Bridging Channel)

BuckleBridge® provides a solid wall stud bridging system to resist weak axis buckling and torsional rotation of members.

BuckleBridge® Downloads: Download Technical data Tech Sheet| Download drawing file DWG | Download specification data Specs | Download BIM data BIM
 
Notched Track NT

NotchTrak® NT

NotchTrak® NT provides solid wall stud bridging and/or backing systems.

NotchTrak® NT Downloads: Download Technical data Tech Sheet | Download drawing file DWG | Download specification data Specs | Download BIM data BIM

TSN's Product Catalogs are an essential resource for the design of cold formed steel. Developed by Engineers, the catalogs contain design data for members connectors, and fasteners.

TSN's Wall Bridging Product Line can be found in the following Catalogs:

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