SSTB® Anchor Bolts

Installation

View step-by-step installation instructions

The SSTB is designed for maximum performance as an anchor bolt for holdowns and Strong-Wall® shearwalls. Extensive SSTB testing has been done to determine the design load capacity at a common application, the garage stem wall. Design loads are based on a series of five tests, with a three-times reduction factor. SSTB14 is a 5/8" diameter anchor bolt designed and tested specifically for shallow foundation installations.

The Simpson Strong-Tie™ SSTB™ anchor bolts are now code listed by ICC-ES under the 2006 and 2009 IBC® and IRC® to meet the requirements of the new ICC-ES acceptance criteria – AC 399. ICC-ES ESR-2611 is the industry’s first code report issued for proprietary anchor bolts evaluated to the criteria of AC 399.

Additionally, Simpson Strong-Tie has tested the SSTB anchor bolts per AC 399 for higher loads in slab-on-grade and stemwall-into-the-footing foundations.

Special Features:

Rolled threads for higher tensile capacity.
Offset angle reduces side-bursting, provides more concrete cover.
Stamped embedment line aids installation.
Configuration results in minimum rebar interference.

Material: ASTM A36

Finish: None. May be ordered HDG; Contact Simpson Strong-Tie.

Installation:

SSTB is used for monolithic and two-pour installations.
Nuts and washers 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 (Simpson NUT5/8-OST, NUT7/8-OST, CNW5/8-5/8OST, CNW7/8-7/8OST).
Reinforced Concrete Foundation:
- Install SSTB before the concrete pour using AnchorMates®. Install the SSTB per installation details. Install one #4 rebar 3" to 5" (may be foundation rebar not post-tension cable) from the top of the foundation.
- The SSTB does not need to be tied to the rebar.
- Minimum concrete compression strength is 2500 psi. Unless noted otherwise, no special inspection is required for foundation concrete when the structural design is based on concrete no greater than 2500 psi (IBC Section 1704.4).
- Unless otherwise noted, do NOT install where: (a) a horizontal cold joint exists within the embedment depth between the slab and foundation wall or footing beneath, unless provisions are made to transfer the load, or the slab is designed to resist the load imposed by the anchor; or (b) slabs are poured over concrete block foundation walls.
Reinforced Concrete Block:
- Before concrete pour, install diagonally at approx. 45° in the cell per installation details.
- Horizontal #4 rebar (minimum 56" long centered about the anchor bolt) - approx. one rebar 12" from the top and two rebars approx. 28" from the top. Vertical #4 rebar (minimum 24" long) - install with maximum 24" o.c. spacing.
- Grout all cells with minimum 2000 psi concrete. Vibrate the grout per the IBC, Section 2104.1.
SSTB14:
- Install before the concrete pour using AnchorMates and Anchor Bolt Stabilizers
- Install per installation details
- Use one #4 rebar, 3 to 5 inches from top of foundation
  Note: not for use where a horizontal cold joint exists within the embedment depth of the bolt.

roll over images below to see larger image

Identification on the bolt head showing embedment angle and model.

SSTB16L (others similar, see footnote #6 below)	SSTB16 (others similar see footnote #7 below)	SSTB14 (others similar)	SSTB14 Installation Detail

U.S. Patent 5,317,850


Typical SSTB Installation in Concrete Foundation Maintain minimum rebar cover, per ACI-318 concrete code requirements	Typical SSTB Installation with Mudsill and Holdown	Two Pour Installation (SSTB20, 24 and 34)	Typical SSTB Installation in Grouted Concrete Block

topPlan view of SSTB Placement in Concrete:

roll over images below to see larger image


Corner Installation (Install with arrow on top of the bolt oriented as shown)		Non-Corner Installation (Bolt may be installed @ 45° to 135° as shown)		Corner Installation (Install with arrow on top of the bolt oriented as shown)

topTypical Plan Views of Rebar Installation:

roll over images below to see larger image





Corner Installation	Continuous Stemwall	End Wall (See footnote 4)

See Typical Plan Views of Rebar Installation: for installation details

Loads may not be increased for short-term loading. Loads apply to earthquake and wind loading.
Minimum anchor center-to-center spacing is 2l_e for anchors acting in tension at the same time for full load.
The SSTB was tested in a stem wall with a minimum amount of concrete cover.
Use full table load when installed 24" from the end or installed in a corner condition (see illustrations). When used 5" from the end of a concrete foundation (see end wall graphic), the maximum allowable load is 9045 lbs. for SSTB28, 9585 lbs. for SSTB34 and 36 bolts, and table loads for all other models (these loads are not Code listed - Contact Simpson Strong-Tie for test data).
HDU and HTT minimum end distance is 4 3/8".
Order the SSTBL models (ex. SSTB24L) for longer thread length (16L = 5 1/2", 20L = 6 1/2", 24L = 6", 28L = 6 1/2"). SSTBL and SSTB loads are the same. Not available on SSTB14.
SSTB34 has 4 1/2" of thread and SSTB36 has 6 1/2". These two models are not available in SSTBL versions.
Use 90% of the table load for 2000 psi concrete.
Allowable load for SSTB14 is 5020 lbs. when f'_c = 3000 psi.
Minimum end distance required to achieve table loads is l_e.
Testing to new ICC-ES acceptance criteria to be completed in 2009. Reference this web site for latest loads and information.

SSTBL models are recommended for HDU, HDQ8, and HD holdowns on 2-2x and 3x sill plates. Where SSTB14’s are specified for these products, use SSTB16L.
No cold joint within embedment depth unless provisions are made to transfer the load.
The design engineer may specify an alternate anchorage system, provided the anchor diameter is the same.
Increase the embedment depth 2 1/2" to accommodate the HDC standoff block.
Where noted the allowable load for this application is limited to 4600 lbs. which is less than the published loads for these holdowns.
Where noted the allowable load for single pour is limited to 5175 lbs. which is less than the published loads for these holdowns.
SSTB14 can be used for this application with a 9" stemwall width.
Where noted SSTB20 may be used on 1 1/2", 2" and 3" (post) wood member thicknesses. See (post) wood member thickness info
Where noted SSTB28 may be used on 3" (post) wood member thickness

					Legacy Reports
	IAPMO ES ER	ICC-ES ESR	CITY OF LOS ANGELES	STATE OF FLORIDA	ICC-ES NER	ICC-ES ER	ICC-ES ES
SSTB	See specific model numbers for code listings.
SSTB14	No code listing: Please contact us for test data.
SSTB16		ESR-2611	RR25827	FL13628		ER-4935
SSTB16L		ESR-2611	RR25827			ER-4935
SSTB20		ESR-2611	RR25827	FL13628		ER-4935
SSTB20L		ESR-2611	RR25827	FL13628		ER-4935
SSTB24		ESR-2611	RR25827	FL13628		ER-4935
SSTB24L		ESR-2611	RR25827	FL13628		ER-4935
SSTB28		ESR-2611	RR25827	FL13628		ER-4935
SSTB28L		ESR-2611	RR25827	FL13628		ER-4935
SSTB34		ESR-2611	RR25827	FL13628		ER-4935
SSTB34L	No code listing: Please contact us for test data.
SSTB36		ESR-2611	RR25827	FL13628		ER-4935
SSTB36L	No code listing: Please contact us for test data.
SSTBL	No code listing: Please contact us for test data.

Download the Simpson AutoCad Menu, which allows you to insert Ortho views directly into your AutoCAD drawing.

	ORTHOGRAPHIC	PERSPECTIVE
SSTB	None for this model	BP and SSTB: DWG \| DXF HD5A with SSTB: DWG \| DXF Shear Load Parallel to Edge: DWG \| DXF SSTB View 1: DWG \| DXF SSTB View 2: DWG \| DXF SSTB View 3: DWG \| DXF SSTB View 4: DWG \| DXF
SSTB14	SSTB14: DWG \| DXF SSTB14 front view: DWG \| DXF SSTB14 top view: DWG \| DXF	None for this model
SSTB16	SSTB16: DWG \| DXF SSTB16 front view: DWG \| DXF SSTB16 top view: DWG \| DXF	None for this model
SSTB16L	None for this model	None for this model
SSTB20	SSTB20: DWG \| DXF SSTB20 front view: DWG \| DXF SSTB20 top view: DWG \| DXF	None for this model
SSTB20L	None for this model	None for this model
SSTB24	SSTB24: DWG \| DXF SSTB24 front view: DWG \| DXF SSTB24 top view: DWG \| DXF	None for this model
SSTB24L	None for this model	None for this model
SSTB28	SSTB28: DWG \| DXF SSTB28 front view: DWG \| DXF SSTB28 top view: DWG \| DXF	None for this model
SSTB28L	None for this model	None for this model
SSTB34	SSTB34: DWG \| DXF SSTB34 front view: DWG \| DXF SSTB34 top view: DWG \| DXF	None for this model
SSTB34L	None for this model	None for this model
SSTB36	SSTB36: DWG \| DXF SSTB36 front view: DWG \| DXF SSTB36 top view: DWG \| DXF	None for this model
SSTB36L	None for this model	None for this model
SSTBL	None for this model	None for this model