STS Industrial - Bolts & Screws

 

STRONG BOLT® 2 WEDGE ANCHOR FOR CRACKED AND UNCRACKED CONCRETE

AUTHORIZED SIMPSON STRONG-TIE DISTRIBUTOR

Code Listed for Cracked Concrete

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 2009 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 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.

The Strong-Bolt 2 wedge anchor in type 316 stainless steel also offers optimum performance in both cracked and uncracked concrete, meeting 2009 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.

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.

Strong Bolt 2 Anchor Installation

Strong Bolt 2 Anchor Marking

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

  • STRONG-BOLT 2 ANCHOR PRODUCT DATA

    Strong Bolt 2 Anchor Product Data

    Length Identification Head Marks on Strong Bolt 2 Anchors

    (corresponds to length of anchor – inches).

    Strong Bolt 2 Anchor Length Identification Markings

  • MATERIAL SPECIFICATIONS:

    Strong Bolt 2 Anchor Material Specifications

    1. Zinc meets ASTM B 633, Class SC 1 (Fe / Zn 5), Type III.

    Strong Bolt 2 Anchor Material Specifications

  • INSTALLATION:
    • Do not use an impact wrench to set or tighten the Strong-Bolt Anchor.
    • Drill a hole in the base material using a carbide drill bit the same diameter as the nominal diameter of the anchor to be installed. Drill the hole to the specified embedment depth and blow it clean using compressed air. Overhead installations need not be blown clean. Alternatively, drill the hole deep enough to accommodate embedment depth and dust from drilling.
    • Assemble the anchor with nut and washer so the top of the nut is flush with the top of the anchor. Place the anchor in the fixture and drive into the hole until washer and nut are tight against fixture.
    • Tighten to the required installation torque.

    Caution: Oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor’s load capacity.

    Strong Bolt 2 Anchor Installation Sequence

    Strong-Bolt® Anchor Additional Installation Data¹
    Carbon Steel Strong-Bolt® 2 Wedge Anchor Installation Information¹

    Strong Bolt 2 Anchor 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.
    4. For the 2003 IBC, fut replaces futa.
    Stainless Steel Strong-Bolt® 2 Wedge Anchor Installation Information¹

    Strong Bolt 2 Anchor 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.
    4. For the 2003 IBC, fut replaces futa.
  • CODE REPORTS:
    • ICC-ES ESR-3037 (carbon and stainless steel – in cracked and uncracked concrete)
    • IAPMO UES ER-240 (carbon steel in CMU)
    • Florida Statewide Product Approval FL15731
    • City of Los Angeles RR 25891 (carbon and stainless steel – in cracked and uncracked concrete)
    • City of Los Angeles RR 25936 (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

Sources: ASTM Standards for Mechanical Fasteners and Related Processes 2nd Edition, Inch Fastener Standards 8th Edition, Simpson Strong-Tie Anchoring and Fastening Systems for Concrete and Masonry, StrongTie.com

Note: All material included on this page is informational only, and should not be used as one’s sole source for design purposes. STS Industrial, Inc. and its affiliates do not guarantee the accuracy of the information on this site, and retain no liability for the use or misuse of the information contained on this site.