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DBR/SBR Spacer Bracers

DBR/SBR

Simpson Strong-Tie introduces the SBR and DBR spacer bracers for cold-formed steel construction. These spacer bracers reduce the installed cost of cold-formed steel stud walls by enabling faster stud layout while minimizing the need for bridging clips.

The DBR is used for interior walls to allow for quicker drywall attachment, while the SBR is designed for structural exterior walls. Both products provide bracing along the length of the stud, and for head-of-wall slip conditions. The SBR and DBR also come with prepunched slots that eliminate the need to use bridging clips with on-module studs.

The SBR and DBR spacer bracers come with bracing load data based on assembly testing, thus mitigating risk for designers and maximizing confidence in design specs. In fact, the SBR and DBR are the only spacer bracers on the market with tabulated design values based on assembly tests.

Key Features

  • SBR and DBR have patent-pending precision-engineered prepunched slots strategically located to enable 12", 16" and 24" on-center stud spacing and can be used to space the studs without having to mark the top track for layout
  • The SBR will accommodate 3 5/8" and 6" studs in thicknesses of 33 mil (20 ga.) thru 68 mil (14 ga.)
  • The DBR will accommodate 2 1/2", 3 5/8" and 6" studs in thicknesses of 15 mil (25 ga. EQ) through 33 mil (20 ga.)
  • Prepunched holes in the SBR provide rapid screw installation when spacer bracer splices are needed for axial load-bearing studs
  • In off-layout or end-of run conditions, the hat-section profiles enable clip attachments to the stud with Simpson Strong-Tie® LSSC or RCA connectors

Installation

  • Spacer bracers are fed through the stud knockout at a 90-degree angle until studs align with spacer bracer slots. With the slots engaging the stud web, the spacer bracer is then rotated back to the flat position so that the slotted flanges are on the bottom.
  • For off-layout or end-of-run studs where a spacer bracer slot does not engage a stud, manually snip the spacer bracer flanges with a 1/2" deep slot and secure the spacer bracer to the stud with Simpson Strong-Tie LSSC or RCA connectors. Use all specified fasteners.
  • Wear gloves while handling and installing spacer bracers.

Ordering Information

  • SBR/43-R20 (Box of 20)
  • DBR/30-R20 (Box of 20)

Codes

  • Testing performed in accordance with ICC-ES AC261

Related Links

Related Literature

Product Information Tables

SBR and DBR Spacer Bracer – Connection Strength and Stiffness
Model No. Stud Depth (in.) Stud Thickness mil (ga.) Allowable Allowable Torsional Moment(in./lb.) Brace Strength (lb.) Brace Stiffness (lb./in.)
SBR/43 3 5/8 33 (20) 235 390 845
43 (18) 310 435 1,390
54 (16) 400 435 1,390
68 (14) 400 435 1,390
6 33 (20) 215 160 495
43 (18) 310 330 765
54 (16) 365 450 840
68 (14) 365 450 840
DBR/30 3 5/8 15 (25 EQ) 55
18 (25) 55
19 (20 EQ) 60
30 (20 DW) 85
33 (20 STR) 90
6 15 (25 EQ) 55
18 (25) 55
19 (20 EQ) 60
30 (20 DW) 85
33 (20 STR) 90
  1. Allowable loads are for use when utilizing the traditional Allowable Stress Design methodology. For LRFD loads multiply the ASD tabulated values by 1.6.
  2. Tabulated 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.
  3. Tabulated Brace Stiffness values apply to both ASD and LRFD designs.
  4. Allowable loads consider bridging connection only. It is the responsibility of the Designer to verify the strength and serviceability of the framing members.
  5. EQ – Equivalent, DW – Drywall, STR – Structural.
SBR and DBR Gross Properties
Model No. Design Thickness (in.) Fy (ksi) Area (in.2) lx (in.4) Sx (in.3) Rx (in.) ly (in.4) Sy (in.3) Ry (in.) Torsional Properties
Jx1,000 (in.4) Cw (in.4) Y0 (in.) m (in.) R0 (in.) β
SBR/43 0.0468 40 0.126 0.0047 0.1458 0.1936 0.0436 0.0400 0.5891 0.0916 5.56E-04 0.283 -0.017 0.681 0.828
DBR/30 0.0289 33 0.060 0.0023 0.0082 0.1936 0.0109 0.0141 0.4259 0.0167 7.05E-05 0.346 0.087 0.582 0.647
SBR and DBR Net Properties
Model No. Area (in.2) lx (in.4) Sx (in.3) Rx (in.) ly (in.4) Sy (in.3) Ry (in.) Torsional Properties
Jx1,000 (in.4) Cw (in.4) Y0 (in.) m (in.) R0 (in.) β
SBR/43 0.085 0.0028 0.0097 0.1816 0.0120 0.0184 0.3765 0.0617 3.43E-05 0.355 0.141 0.548 0.581
DBR/30 0.022 0.0001 0.0004 0.0479 0.0008 0.0027 0.1944 0.0061 1.09E-06 0.086 0.051 0.218 0.844
SBR and DBR Allowable Member Strengths
Model No. Ma (Fy) (in.-lb.) Ma (12" o.c.) (in.-lb.) Ma (16" o.c.) (in.-lb.) Ma (24" o.c.) (in.-lb.) Pa (12" o.c.) (lb.) Pa (16" o.c.) (lb.) Pa (24" o.c.) (lb.)
SBR/43 369 369 369 360 945 904 618
DBR/30 44 40 38 32
  1. Net section properties are based a section that excludes all material that is interrupted by the slots.
  2. Member strengths are based on DSM Analysis (non-prequalified section, Ω = 2.0).
  3. Cb=1.67 has been applied to Ma to account for a triangular moment diagram with zero end moment.
SBR/43 Maximum Bridging Distance (ft.)
Stud Spacing (in.) Stud Section Stud Thickness mil (ga.) Lateral Stud Pressure (psf)10
5 10 15 20 25 30 35 40 45 50
12 362S162 33 (20) 8 8 8 8 7 6 5 4 4
43 (18) 8 8 8 8 8 8 7 6 5 5
54 (16) 8 8 8 8 8 8 8 7 7 6
68 (14) 8 8 8 8 8 8 8 8 7 6
362S200 33 (20) 8 8 8 7 6 5 4
43 (18) 8 8 8 8 8 6 5 5 4 4
54 (16) 8 8 8 8 8 8 6 6 5 4
68 (14) 8 8 8 8 8 8 6 6 5 4
600S162 33 (20) 8 8 8 8 8 7 6 5 4 4
43 (18) 8 8 8 8 8 8 8 7 6 6
54 (16) 8 8 8 8 8 8 8 8 8 7
68 (14) 8 8 8 8 8 8 8 8 8 7
600S200 33 (20) 8 8 8 7 6 5 4
43 (18) 8 8 8 8 8 7 6 5 5 4
54 (16) 8 8 8 8 8 8 7 6 6 5
68 (14) 8 8 8 8 8 8 7 6 6 5
16 362S162 33 (20) 8 8 8 7 5 4 4
43 (18) 8 8 8 8 7 6 5 4 4
54 (16) 8 8 8 8 8 7 6 5 5 4
68 (14) 8 8 8 8 8 8 6 6 5 4
362S200 33 (20) 8 8 7 5 4
43 (18) 8 8 8 7 6 5 4
54 (16) 8 8 8 8 7 6 5 4 4
68 (14) 8 8 8 8 7 6 5 4 4
600S162 33 (20) 8 8 8 7 6 5 4
43 (18) 8 8 8 8 8 7 6 5 5 4
54 (16) 8 8 8 8 8 8 7 6 6 5
68 (14) 8 8 8 8 8 8 7 6 6 5
600S200 33 (20) 8 8 7 5 4
43 (18) 8 8 8 8 6 5 4 4
54 (16) 8 8 8 8 8 6 5 5 4 4
68 (14) 8 8 8 8 8 6 5 5 4 4
24 362S162 33 (20) 8 8 6 4
43 (18) 8 8 8 6 5 4
54 (16) 8 8 8 7 6 5 4
68 (14) 8 8 8 7 6 5 4
362S200 33 (20) 8 7 5
43 (18) 8 8 6 5 4
54 (16) 8 8 7 5 4
68 (14) 8 8 7 5 4
600S162 33 (20) 8 8 7 5 4
43 (18) 8 8 8 7 6 5 4
54 (16) 8 8 8 8 7 6 5 4 4
68 (14) 8 8 8 8 7 6 5 4 4
600S200 33 (20) 8 7 5
43 (18) 8 8 7 5 4
54 (16) 8 8 8 6 5 4
68 (14) 8 8 8 6 5 4
DBR/30 Maximum Bridging Distance (ft.)
Stud Spacing (in.) Stud Section Stud Thickness mils (ga.) Lateral Stud Pressure (psf)
5 10
12 362S125 15 (25 EQ) 8 5
18 (25) 8 5
19 (20 EQ) 8 5
30 (20 DW) 8 5
33 (20 STR) 8 5
600S125 15 (25 EQ) 8 6
18 (25) 8 6
19 (20 EQ) 8 6
30 (20 DW) 8 6
33 (20 STR) 8 6
16 362S125 15 (25 EQ) 7
18 (25) 7
19 (20 EQ) 7
30 (20 DW) 7
33 (20 STR) 7
600S125 15 (25 EQ) 8 4
18 (25) 8 4
19 (20 EQ) 8 4
30 (20 DW) 8 4
33 (20 STR) 8 4
24 362S125 15 (25 EQ) 4
18 (25) 4
19 (20 EQ) 4
30 (20 DW) 4
33 (20 STR) 4
600S125 15 (25 EQ) 4
18 (25) 4
19 (20 EQ) 4
30 (20 DW) 5
33 (20 STR) 5
  1. Tabulated solutions are for ASD lateral pressure. Contact Simpson Strong-Tie for LRFD solutions.
  2. Lateral pressures shall be determined based on the load combinations of the applicable building code. For designs in accordance with the 2009 IBC and earlier, wind pressures are at the working stress level and may be used directly. For designs in accordance with the 2012 and 2015 IBC, wind pressures are at the strength level and must be multiplied by 0.6 for ASD load combinations.
  3. Tabulated values are based on the minimum of the tested connection strength and the calculated SBR/DBR member strength. Studs must be checked separately for unbraced length.