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SSTB® Anchor Bolt

SSTB®

On This Page

The SSTB anchor bolt is designed for maximum performance as an anchor bolt for holdowns and Simpson Strong-Tie® Strong-Wall® shearwalls. Extensive testing has been done to determine the design load capacity of the SSTB when installed in many common applications.

The Simpson Strong-Tie SSTB anchor bolts are code listed by ICC-ES under the 2012, 2015, 2018 and 2021 IBC® and IRC®.

Key Features

  • Identification on the bolt head showing embedment angle and model
  • Offset angle reduces side bursting, and provides more concrete cover
  • Rolled thread for higher tensile capacity
  • Stamped embedment line aids installation
  • Available in HDG for additional corrosion resistance

Material

  • ASTM F-1554, Grade 36

Finish

  • None. May be ordered HDG; contact Simpson Strong-Tie.

Installation

  • SSTB is suitable for monolithic and two-pour concrete applications.
  • Nuts and washers for holdown attachment are not supplied with the SSTB; install standard nuts, couplers and/or washers as required.
  • On HDG SSTB anchors, chase the threads to use standard nuts or couplers or use overtapped products in accordance with ASTM A563, for example Simpson Strong-Tie NUT5/8-OST, NUT7/8-OST, CNW5/8-OST, CNW7/8-OST.
  • Install SSTB before the concrete pour using AnchorMate® anchor bolt holders. Install the SSTB per the plan view detail.
  • Minimum concrete compressive strength is 2,500 psi.
  • When rebar is required it does not need to be tied to the SSTB.
  • Order SSTBL models (example: SSTB16L) for longer thread length (16L = 5 1/2", 20L = 6 1/2", 24L = 6", 28L = 6 1/2"). SSTB and SSTBL load values are the same. SSTB34 and SSTB36 feature 4 1/2" and 6 1/2" of thread respectively and are not available in "L" versions.

    GFCMU (Grout-Filled Concrete Masonry Units)
  • One horizontal #4 rebar in the second course.
  • One vertical #4 rebar in adjacent cell for 5/8"-diameter SSTB.
  • One vertical #4 rebar in an adjacent cell and additional vertical #4 rebar(s) at 24" o.c. max. for 7/8"-diameter SSTBs (2 total vertical rebars for end wall corner, 3 total vertical rebars for midwall).

    For two-pour (4" slab) installation loads:
  • When using the SSTB20, use the equivalent loads of the SSTB16.
  • When using the SSTB24, use the equivalent loads of the SSTB20.
  • When using the SSTB34 or 36, use the equivalent loads of the SSTB28.

Related Literature

Wood Construction Connectors 2021-2023
C-C-2021
A catalog including new product information as well as any applicable specification and installation instructions for wood-to-wood and wood-to-concrete structural connectors.
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Conectores para la construcción con madera 2021–2023
C-C-2021SP
El catálogo incluye información sobre nuevos productos, así como especificaciones e instrucciones de instalación aplicables para conectores estructurales de madera a madera y de madera a concreto.
Catalog

Load Tables

SSTB Bolts at Stemwall

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

SSTB Anchor Bolt Load Table
  1. Rebar is required at the top of stem wall foundations, but is not required for slab-on-grade edge and garage curb, or stem wall garage front installations.
  2. Minimum end distances for SSTB bolts are as shown in graphics.
  3. To obtain LRFD values, multiply ASD seismic load values by 1.43 and wind load values by 1.67.
  4. Per Section 1613 of the IBC, detached one- and two-story dwellings in SDC C may use "Wind and SDC A&B" allowable loads.
  5. Midwall loads apply when anchor is 1.5 le or greater from the end. For bolts acting in tension simultaneously, the minimum bolt center-to-center spacing is 3 le.
  6. SSTB28, SSTB34 and SSTB36 with 3 7/8" end distance allowable loads are 6,330 lb. (Wind and SDC A&B) and 5,550 lb. (SDC C-F).

Stemwall Plan Views

SSTB Stemwall Midwall
Midwall
SSTB Corner
Corner
SSTB Endwall
End Wall
SSTB Stemwall Perspective View
Perspective View

SSTB Bolts at Stemwall: Garage Front

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

SSTB Bolts at Stemwall: Garage Front
  1. Rebar is required at the top of stem wall foundations, but is not required for slab-on-grade edge and garage curb, or stem wall garage front installations.
  2. Minimum end distances for SSTB bolts are as shown in graphics.
  3. To obtain LRFD values, multiply ASD seismic load values by 1.43 and wind load values by 1.67.
  4. Per Section 1613 of the IBC, detached one- and two-story dwellings in SDC C may use "Wind and SDC A&B" allowable loads.
  5. Midwall loads apply when anchor is 1.5 le or greater from the end. For bolts acting in tension simultaneously, the minimum bolt center-to-center spacing is 3 le.
SSTB Stemwall Garage Front
Stemwall Garage Front
SSTB Stemwall Garage Front Perspective View
Perspective View
SSTB Garage Front Plan View
Plan View

SSTB Bolts at Slab on Grade: Edge

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

SSTB Bolts at Slab on Grade: Edge
  1. Rebar is required at the top of stem wall foundations, but is not required for slab-on-grade edge and garage curb, or stem wall garage front installations.
  2. Minimum end distances for SSTB bolts are as shown in graphics.
  3. To obtain LRFD values, multiply ASD seismic load values by 1.43 and wind load values by 1.67.
  4. Per Section 1613 of the IBC, detached one- and two-story dwellings in SDC C may use "Wind and SDC A&B" allowable loads.
  5. Midwall loads apply when anchor is 1.5 le or greater from the end. For bolts acting in tension simultaneously, the minimum bolt center-to-center spacing is 3 le.
SSTB Slab Edge
Slab Edge
SSTB Slab on Grade Edge Perspective View
Perspective View
SSTB Slab on Grade Edge Plan View
Plan View

SSTB Bolts at Slab on Garage: Garage Curb

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

SSTB Bolts at Slab on Grade: Garage Curb
  1. Rebar is required at the top of stem wall foundations, but is not required for slab-on-grade edge and garage curb, or stem wall garage front installations.
  2. Minimum end distances for SSTB bolts are as shown in graphics.
  3. To obtain LRFD values, multiply ASD seismic load values by 1.43 and wind load values by 1.67.
  4. Per Section 1613 of the IBC, detached one- and two-story dwellings in SDC C may use "Wind and SDC A&B" allowable loads.
SSTB Slab Garage Curb
Slab Garage Curb
SSTB Slab on Garage Perspective View
Perspective View
SSTB Slab on Garage Plan View
Plan View

SSTB Bolts in 8" GFCMU (Grout-Filled Concrete Masonry Units)

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

SSTB Bolts in 8" GFCMU
  1. Loads are based on a minimum CMU compressive strength, f'm, of 1,500 psi.
  2. Minimum end distance required to achieve midwall table loads is 1.5 le.
  3. Minimum end distance for corner/end wall loads is 4 1/4".
  4. Loads may not be increased for duration of load.
  5. Allowable loads are based on the average ultimate load with a safety factor of 5.0 per TMS 402.
SSTB Concrete Block Installation

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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