STS Industrial - Bolts & Screws

 

TORQ-CUT™ SELF UNDERCUTTING ANCHOR

AUTHORIZED SIMPSON STRONG-TIE DISTRIBUTOR

Code Listed for Cracked Concrete

The Torq-Cut™ self-undercutting anchor is a heavy-duty, high-capacity anchor designed and tested for use in cracked and uncracked concrete under static and seismic loading conditions. It is designed to meet the stringent requirements of the 2006, 2009 and 2012 IBC for post-installed anchors. The built-in ring with hardened cutters expands with installation torque forming undercut grooves in the concrete. This interlocking connection between the anchor and the concrete provides superior load carrying capacity.

FEATURES:
  • Self-undercutting feature provides higher load carrying capacity than conventional mechanical anchors
  • AC193 code tested to ensure outstanding performance in both cracked and uncracked concrete
  • Excellent for resisting seismic and vibratory loads
  • Suitable for seismic applications categories A-F
  • Ductile steel rod provides consistent, reliable performance
  • Specially designed, low-friction expansion cone minimizes binding and speeds installation
  • Installs just like a conventional expansion anchor, no special tool, drill bit, or secondary drilling is required
  • The head is stamped with the Simpson Strong-Tie® “≠” sign and size identification for easy post installation verification
MATERIAL:

ASTM A193 grade B7 or B7M rod with SAE J403 grade 1144 undercut  expansion ring and expansion cone

Torq-Cut Anchor Bolt Undercutting

Torq-Cut Installed

  • Torq-Cut™ Anchor Product Data, Pre-Set Version

    1. See Pre-Set detail below.

    Torq-Cut™ Anchor Product Data, Through-Set Version

    1. See Through-Set detail below.

    Drilled Hole Depth

    1. The notation in parentheses is for the 2006 IBC.
    2. The Drilled Hole Depth is 1/2″ greater than the Nominal Embedment Depth.
    3. For the Through-Set version of the Torq-Cut anchor, if the actual Fixture Thickness (tfix) is less than the Maximum Fixture Thickness (F), the Minimum Drilled Hole Depth (A) must be increased as follows:

      Drilled Hole Depth = A + (F-tfix)

      Similarly, the Minimum Effective Embedment Depth (C) is increased as follows:

      Effective Embedment Depth = C + (F-tfix)

  • MATERIAL SPECIFICATIONS:

    For use in interior environments where low levels of moisture and corrosive chemicals are present.

    1. 3/8″ TCA uses ASTM A193 Grade B7 rod. 1/2″, 5/8″ and 3/4″ TCA uses ASTM A193 Grade B7M rod.

    TENSION STRENGTH DESIGN DATA

    Torq-Cut Anchor Bolt Tension Strength Design Data

    SHEAR STRENGTH DESIGN DATA

    Torq-Cut Anchor Bolt Shear Strength Design Data

  • Caution: Oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor’s load capacity. Do not use an impact wrench to set or tighten the Torq-Cut™ anchor.

    INSTALLATION: PRE-SET VERSION
    1. Drill a hole in the base material to the specified embedment depth using the appropriate diameter carbide drill bit specified for each diameter.
    2. Blow the hole clean using compressed air.
    3. Assemble the anchor with nut and washer and finger tighten nut so all components are snug (spacer sleeve, expansion sleeve and cone). The bottom of the threaded rod should be flush with the bottom of the cone.
    4. Place the anchor into the drilled hole and use a hammer and setting tool to drive the anchor until the washer and nut are tight against the surface of the base material.
    5. Remove the nut and washer and install the fixture. Re-assemble the nut and washer over the fixture.
    6. Tighten to the required installation torque.

    INSTALLATION: THROUGH-SET VERSION
    1. Drill a hole in the base material to the specified embedment depth using the appropriate diameter carbide drill bit specified for each diameter.
    2. Blow the hole clean using compressed air.
    3. Assemble the anchor with nut and washer and finger tighten nut so all components are snug (spacer sleeve, expansion sleeve and cone). The bottom of the threaded rod should be flush with the bottom of the cone.
    4. Place the anchor through the fixture and into the drilled hole. Use a hammer and setting tube* to drive the anchor until the washer and nut are tight against the fixture.
    5. Tighten to the required installation torque.

    TORQ-CUT™ INSTALLATION DATA

    TORQ-CUT™ INSTALLATION INFORMATION AND ADDITIONAL DATA¹

    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.

  • CODE REPORTS:

    The load tables list values based upon results from the most recent testing and may not reflect those in current code reports. Where additonal local jurisdiction requirements apply, consult the current reports for applicable load values.

  • TEST CRITERIA:

    The Torq-Cut anchor has been tested in accordance with ICC-ES’s Acceptance Criteria for Mechanical Anchors in Concrete Elements (AC193) 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

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.