SUBH Bridging Connectors
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Product Details
Simplified Design and Installation Through Innovation
Simpson Strong-Tie® SUBH and MSUBH wall stud bridging connectors for cold-formed steel (CFS) framing offer a compact profile that allows standard 1 5/8" studs to be sistered directly against adjacent studs. The LSUBH connector provides the same installation benefits of the SUBH/MSUBH connectors, and is suitable for many wind- and load-bearing situations where the load demand is light to moderate. Many applications require only one screw, greatly reducing labor costs and increasing productivity.
Key Features
- Tested to include stud-web strength and stiffness in the tabulated design values
- Design values ensure compliance with AISI S100 Sections D3.2.1 and D3.3 for axially and laterally loaded studs
- Flexible design solutions for web thicknesses of 33 mil (20 ga.) through 97 mil (12 ga.) and stud sizes from 3 5/8" to 8"
- MSUBH accommodates back-to-back built-up members ranging from 33 mil (20 ga.) to 54 mil (16 ga.)
Material
- LSUBH3.25 — 33 mil (20 ga.); SUBH3.25 — 43 mil (18 ga.); MSUBH3.25 — 68 mil (14 ga.)
Finish
- Galvanized (G90)
Installation
- See gallery for installation images and video
Ordering Information
- LSUBH3.25 and SUBH3.25-R150 (Bucket of 150); MSUBH3.25-R100 (Bucket of 100)
Related Literature
Load Tables
SUBH Bridge Clip Connector – Strength and Stiffness
- Allowable loads are for use when utilizing Allowable Stress Design methology. For LRFD loads multiply the ASD tabulated values by 1.6.
- Allowable brace strengths are based on ultimate test load divided by a safety factor. Serviceability limit is not considered, as brace stiffness requirements are given in section D3.3 of AISI S100-2012. Contact Simpson Strong-Tie if nominal brace strength is required.
- Tabulated stiffness values apply to both ASD and LRFD designs.
- Allowable loads consider bridging connection only. It is responsibility of the Designer to verify the strength and serviceability of the framing members.
- "Min." fastener quantity and tabulated values — fill round hole (one screw total); "Max." fastener quantity and tabulated values — fill round and triangle holes (two screws total).
LSUBH – Maximum Vertical Spacing for Rows of U-Channel Bridging (ft.)
- See General Information and Notes.
- Tabulated solutions are for ASD lateral pressure. Contact Simpson Strong-Tie for LRFD solutions.
- Lateral pressure shall be determined based on load combinations of the applicable code. For designs in accordance with the 2009 IBC and earlier, wind pressures are at working stress level and may be used directly. For designs in accordance with the 2012 IBC and later, wind pressures are at strength level and must be multiplied by 0.6 for ASD load combinations.
- "Min." designates a solution with the minimum number of fasteners ((1) #10 screw installed in round hole). "Max." designates a solution requiring the maximum number of fasteners ((2) #10 screws; fill both round and triangle holes). Blank areas designate conditions where the LSUBH does not offer a solution.
SUBH – Maximum Vertical Spacing for Rows of U-Channel Bridging (ft.)
- See General Information and Notes.
- Tabulated solutions are for ASD lateral pressure. Contact Simpson Strong-Tie for LRFD solutions.
- Lateral pressure shall be determined based on load combinations of the applicable code. For designs in accordance with the 2009 IBC and earlier, wind pressures are at working stress level and may be used directly. For designs in accordance with the 2012 IBC and later, wind pressures are at strength level and must be multiplied by 0.6 for ASD load combinations.
- "Min." designates a solution with the minimum number of fasteners ((1) #10 screw installed in round hole). "Max." designates a solution requiring the maximum number of fasteners ((2) #10 screws; fill both round and triangle holes). Blank areas designate conditions where the SUBH does not offer a solution.
MSUBH – Maximum Vertical Spacing for Rows of U-Channel Bridging (ft.)
- See General Information and Notes.
- Tabulated solutions are for ASD lateral pressure. Contact Simpson Strong-Tie for LRFD solutions.
- Lateral pressure shall be determined based on load combinations of the applicable code. For designs in accordance with the 2009 IBC and earlier, wind pressures are at working stress level and may be used directly. For designs in accordance with the 2012 IBC and later, wind pressures are at strength level and must be multiplied by 0.6 for ASD load combinations.
- "Min." designates a solution with the minimum number of fasteners ((1) #10 screw installed in round hole). "Max." designates a solution requiring the maximum number of fasteners ((2) #10 screws; fill both round and triangle holes). Blank areas designate conditions where the MSUBH does not offer a solution.
MSUBH – Maximum Vertical Spacing for Rows of U-Channel Bridging (ft.) (cont.)
- See General Information and Notes.
- Tabulated solutions are for ASD lateral pressure. Contact Simpson Strong-Tie for LRFD solutions.
- Lateral pressure shall be determined based on load combinations of the applicable code. For designs in accordance with the 2009 IBC and earlier, wind pressures are at working stress level and may be used directly. For designs in accordance with the 2012 IBC and later, wind pressures are at strength level and must be multiplied by 0.6 for ASD load combinations.
- "Min." designates a solution with the minimum number of fasteners ((1) #10 screw installed in round hole). "Max." designates a solution requiring the maximum number of fasteners ((2) #10 screws; fill both round and triangle holes). Blank areas designate conditions where the MSUBH does not offer a solution.
How to Use Bridging Connector Allowable Load Table
The tabulated strength and stiffness values are for use with Sections D3.2.1 and D3.3 of the 2012 edition of AISI North American Specification for the Design of Cold-Formed Steel Structural Members (AISI S100-2012) as follows:
Bracing Design for Laterally Loaded C-Studs
- Step 1: Calculate required bracing force for each flange using equation D3.2.1-3
- Step 2: Multiply result by stud depth to obtain torsional moment
- Step 3: Select connector with tabulated allowable torsional moment that exceeds torsional moment from Step 2 for the stud depth and gauge required
Bracing Design for Axially Loaded C-Studs
- Step 1: Calculate required brace strength using equation D3.3-1
- Step 2: Calculate required brace stiffness using equation D3.3-2a
- Step 3: Select connector with tabulated allowable brace strength that exceeds strength from Step 1 and tabulated brace stiffness that exceeds stiffness from Step 2 for the stud depth and gauge required
Laterally loaded C-stud
Axially loaded C-stud
Code Reports
| Part | IAPMO UES ER | ICC-ES ESR | City of Los Angeles | State of Florida |
|---|---|---|---|---|
| LSUBH3.25 | ER-102 ER-124 | |||
| MSUBH3.25 | ER-102 ER-124 | RR25489 | ||
| SUBH3.25 | ER-102 ER-124 | RR25489 |
Drawings
| Part | Orthographic | Perspective |
|---|---|---|
| MSUBH3.25-R100 | None | |
| SUBH3.25-R150 | None |
