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Information on this page has been updated since the printing of the C-SAS-2012 catalog.
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STRONG-BOLT® 2Wedge Anchor for Cracked and Uncracked Concrete

Code Listed for Cracked Concrete Code Listed for
Cracked Concrete
Read more about Cracked Concrete
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Strong-Bolt® 2

CODE LISTED

ICC-ES ESR-3037 (Cracked and Uncracked Concrete)
IAPMO UES ER-240 (CMU)

The Strong-Bolt® 2 wedge anchor is the next-generation solution for cracked and uncracked concrete. Following rigorous testing according to ICC-ES acceptance criteria, the Strong-Bolt 2 anchor received classification as a Category 1 anchor*, the highest attainable anchor category for performance in cracked concrete under static and seismic loading. Available in stainless steel, it is code-listed by ICC-ES under the 2012 IBC requirements for post-installed anchors in cracked and uncracked concrete.

Available in the popular 3/8" diameter, the Strong-Bolt 2 anchor is ideal for MEP applications in cracked concrete, such as hanging pipes, struts, equipment anchorage and other fixtures overhead. The anchor is also effective for lightweight- concrete applications, including concrete-over-metal decking.

The Strong-Bolt 2 wedge anchor in type 316 stainless steel** also offers optimum performance in both cracked and uncracked concrete, meeting 2012 IBC standards for post-installed anchors. This wedge anchor is ideal for corrosive environments, including construction in coastal areas, wastewater and sewage treatment facilities, food processing facilities, pulp and paper mills, and other high-exposure environments.

* the 1" diameter is classified as Category 2
** 1/4" diameter Strong-Bolt 2 are also available in type 304 stainless steel

GALLERY: roll over images below to see larger image

Strong-Bolt® 2 wedge anchor
The proprietary design of the tri-segmented clip has dual undercutting embossments on each segment, which enable secondary or "followup" expansion if a crack forms and intersects the anchor location. This significantly increases the ability of the Strong-Bolt® 2 wedge anchor to carry load if the hole expands as a result of the crack.

Head Stamp
The head is stamped with the length identification letter.


FEATURES

  • Category 1 anchor classification: The Strong-Bolt 2 anchor received classification as a Category 1 anchor, which is established by performance in reliability tests in accordance with AC193 and ACI355.2 test criteria. Category 1 is the highest attainable anchor category for reliability.
  • Tri-segmented clip: Each segment adjusts independently, increasing follow-up expansion should the hole increase in size as a result of a crack.
  • Dual embossments on each clip segment: Enables clip to undercut into the concrete thereby increasing follow-up expansion should a crack occur.
  • The 3/8" anchor solution approved for 3 ¼" concrete thickness: The Strong-Bolt 2 anchor can be installed in cracked concrete with a minimum thickness of 3 ¼", including concrete-over-metal decking.
  • High-strength alloy clip on carbon-steel anchors: This special alloy clip offers improved performance.
  • Standard (ANSI) fractional anchor: Fits most fixtures and installs with common drill bit sizes and tools.
  • Type 316 stainless-steel clip on stainless steel anchors: In addition to superior corrosion resistance, a stainless-steel clip offers "memory" that contributes to the anchor's performance if the hole increases in size because of a crack.

MATERIAL

Carbon-steel stud with special alloy clip; stainless-steel stud with stainless-steel clip.

FINISH

Zinc-plated (carbon-steel)

CODE REPORTS

  • ICC-ES ESR-3037 (PDF) (carbon and stainless steel - in cracked and uncracked concrete)
  • IAPMO UES ER-240 (PDF) (carbon steel in CMU)
  • Florida Statewide Product Approval FL15731
  • City of Los Angeles RR 25891 (PDF) (carbon and stainless steel - in cracked and uncracked concrete)
  • City of Los Angeles RR 25936 (PDF) (carbon steel in CMU)
  • Underwriters Laboratories FIle Ex3605
  • Factory Mutual 3043442 and 3047639

TEST CRITERIA

The Strong-Bolt 2 wedge anchor has been tested in accordance with the ICC-ES Acceptance Criteria for Mechanical Anchors in Concrete Elements (AC 193) and ACI 355.2 for the following:

  • Static tension and shear loading in cracked and uncracked concrete
  • Seismic and wind loading in cracked and uncracked concrete
  • Performance in cracked concrete
  • Performance in lightweight concrete over metal deck
 
Material Specifications
Carbon Steel - Zinc Plated1
Component Materials
Anchor Body Nut Washer Clip
Carbon Steel Carbon Steel, ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568
  1. Zinc meets ASTM B 633, Class SC 1 (Fe / Zn 5), Type III.
Type 316 Stainless Steel
Component Materials
Anchor Body Nut Washer Clip
Type 316
Stainless Steel
Type 316
Stainless Steel
Type 316
Stainless Steel
Type 316
Stainless Steel

 

Type 304 Stainless Steel (1/4-inch-diameter model only)
Component Materials
Anchor Body Nut Washer Clip
Type 304
Stainless Steel
Type 304
Stainless Steel
Type 304
Stainless Steel
Type 316
Stainless Steel

 

Length Identification Head Marks on Strong-Bolt® 2 Wedge Anchors
(corresponds to length of anchor – inches)
Length ID
 
 
Strong-Bolt® 2 Anchor Product Data
Size Carbon Steel 316 Stainless Steel 304 Stainless Steel Drill Bit
Dia.
Thread Length Quantity
(in.) Model No. Model No. Model No. (in.) (in.) Box Carton
1/4 x 1 3/4 STB2-25134 STB2-251346SS STB2-251344SS 1/4 15/16 100 500
1/4 x 2 1/4 STB2-25214 STB2-252146SS STB2-252144SS 1/4 17/16 100 500
1/4 x 3 1/4 STB2-25314 STB2-253146SS STB2-253144SS 1/4 2  7/16 100 500
3/8 x 2 3/4 STB2-37234 STB2-372346SS - 3/8 1  5/16 50 250
3/8 x 3 STB2-37300 STB2-373006SS - 3/8 1  9/16 50 250
3/8 x 3 1/2 STB2-37312 STB2-373126SS - 3/8 2  1/16 50 250
3/8 x 3 3/4 STB2-37334 STB2-373346SS - 3/8 2  5/16 50 250
3/8 x 5 STB2-37500 STB2-375006SS - 3/8 3  9/16 50 200
3/8 x 7 STB2-37700 STB2-377006SS - 3/8 5  9/16 50 200
1/2 x 3 3/4 STB2-50334 STB2-503346SS - 1/2 2  1/16 25 125
1/2 x 4 1/4 STB2-50414 STB2-504146SS - 1/2 2  9/16 25 100
1/2 x 4 3/4 STB2-50434 STB2-504346SS - 1/2 3  1/16 25 100
1/2 x 5 1/2 STB2-50512 STB2-505126SS - 1/2 3 13/16 25 100
1/2 x 7 STB2-50700 STB2-507006SS - 1/2 5  5/16 25 100
1/2 x 8 1/2 STB2-50812 STB2-508126SS - 1/2 6 25 50
1/2 x 10 STB2-50100 STB2-501006SS - 1/2 6 25 50
5/8 x 4 1/2 STB2-62412 STB2-624126SS - 5/8 2  7/16 20 80
5/8 x 5 STB2-62500 STB2-625006SS - 5/8 2 15/16 20 80
5/8 x 6 STB2-62600 STB2-626006SS - 5/8 3 15/16 20 80
5/8 x 7 STB2-62700 STB2-627006SS - 5/8 4 15/16 20 80
5/8 x 8 1/2 STB2-62812 STB2-628126SS - 5/8 6 20 40
5/8 x 10 STB2-62100 STB2-621006SS - 5/8 6 10 20
3/4 x 5 1/2 STB2-75512 STB2-755126SS - 3/4 3  3/16 10 40
3/4 x 6 1/4 STB2-75614 STB2-756146SS - 3/4 3 15/16 10 40
3/4 x 7 STB2-75700 STB2-757006SS - 3/4 4 11/16 10 40
3/4 x 8 1/2 STB2-75812 STB2-758126SS - 3/4 6 10 20
3/4 x 10 STB2-75100 STB2-751006SS - 3/4 6 10 20
1 x 7 STB2-100700 - - 1 3 1/2 5 20
1 x 10 STB2-1001000 - - 1 3 1/2 5 10
1 X 13 STB2-1001300 - - 1 3 1/2 5 10

 

 
Carbon Steel Strong-Bolt® 2 Wedge Anchor Installation Information1
Installation Information and Additional Data
  1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318 Appendix D.
  2. The clearance must comply with applicable code requirements for the connected element.
  3. For the 2006 IBC do replaces da, Ase,N replaces Ase.
  4. For the 2003 IBC fut replaces futa.
  5. The tabulated value of β for 1/4-inch-diameter carbon steel Strong-Bolt® 2 anchor is for installations in uncracked concrete only.
  6. The 1/4-inch-diameter anchor may be installed in the top of uncracked normal-weight and sand-lightweight concrete over profile steel deck where concrete thickness above upper flute meets the minimum thicknesses specified in this table.
  7. The 3/8-inch- through 1-inch-diameter anchor may be installed in the top of cracked and uncracked normal-weight and sand-lightweight concrete over profile steel deck where concrete thickness above upper flute meets the minimum thicknesses specified in this table.
Stainless Steel Strong-Bolt® 2 Wedge Anchor Installation Information1
Installation Information and Additional Data
  1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318 Appendix D.
  2. The clearance must comply with applicable code requirements for the connected element.

  3. For the 2006 IBC do replaces da , Ase,N replaces Ase.
  4. For the 2003 IBC fut replaces futa.
  5. The tabulated value of β for 1/4-inch-diameter carbon steel Strong-Bolt® 2 anchor is for installations in uncracked concrete only.
  6. The 1/4-inch-diameter anchor may be installed in the top of uncracked normal-weight and sand-lightweight concrete over profile steel deck where concrete thickness above upper flute meets the minimum thicknesses specified in this table.
  7. The 3/8-inch- through 3/4-inch-diameter anchor may be installed in the top of cracked and uncracked normal-weight and sand-lightweight concrete over profile steel deck where concrete thickness above upper flute meets the minimum thicknesses specified in this table.

 

 
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