STS Industrial - Bolts & Screws

 

AT HIGH STRENGTH ANCHORING ADHESIVE

AUTHORIZED SIMPSON STRONG-TIE DISTRIBUTOR

AT is a two-component, high-solids, 10:1 ratio, acrylic-based adhesive for use as a high strength, anchor-grouting material. Formulated for use in all types of weather, AT is designed to dispense easily and cure at temperatures down to 0°F. Resin and initiator are dispensed and mixed simultaneously through the mixing nozzle. AT meets the physical requirements of ASTM C881, Type I & IV, Grade 3, Classes A, B & C, except AT is a non-epoxy product formulated for fast cure time.

at cartridge systems

  1. Cartridge estimation guide available to right.
  2. Detailed information on dispensing tools, mixing nozzles and other adhesive accessories is available under the “Accessories” tab.
  3. Use only appropriate Simpson Strong-Tie mixing nozzle in accordance with Simpson Strong-Tie instructions. Modification or improper use of mixing nozzle may impair performance.

AT High Strength Anchoring Adhesive

Simpson Adhesive Cartridge Estimator ACE

 

 

  • CURE SCHEDULE:

    at cure schedule

    IN-SERVICE TEMPERATURE SENSITIVITY

    at temps

    1. Refer to in-service temperature sensitivity chart for allowable bond strength reduction for in-service temperature. SeeSupplemental Topics – Adhesive Anchors for more information.
    2. Tinst is the base material temperature during installation and curing of the adhesive.
    3. Percent allowable load for Tinst = 0°F (-18°C) is to be used for Tinst between 0°F (-18°C) and 70°F (21°C).
    4. Percent allowable load may be linearly interpolated for intermediate base material in-service temperatures.
    5. °C = (°F – 32) / 1.8
    CHEMICAL RESISTANCE:

    Very good to excellent against distilled water and inorganic acids. Fair to good against organic acids and alkalis, inorganic alkalis, and many organic solvents. Poor against ketones. For more detailed information, see Technical Bulletin T-SAS-CHEMRES.

    The performance of this product results from its unique formulation which is proprietary to Simpson Strong-Tie. The product may also be protected by one or more of U.S. Pats. 5,643,994; 5,965,635; 6,228,207, licensed from ITW.

    STORAGE:

    For best results store between 32°F – 80°F. Shelf life is 12 months from the date of manufacture. Partially used cartridges can be stored for a limited time by leaving nozzle in place. To re-use, attach new nozzle.

    COLOR:

    Resin — white, initiator — black When properly mixed, adhesive will be a uniform gray color.

    CLEAN UP:

    Uncured material – Wipe up with cotton cloths. If desired, scrub area with abrasive, waterbased cleaner and flush with water. If approved, solvents such as ketones (MEK, acetone, etc.), lacquer thinner or adhesive remover can be used. DO NOT USE SOLVENTS TO CLEAN ADHESIVE FROM SKIN. Take appropriate precautions when handling flammable solvents. Solvents may damage surfaces to which they are applied. Cured Material – chip or grind off surface.

  • LOAD TABLES:
    • THREADED ROD (NORMAL-WEIGHT CONCRETE)

      TENSION LOADS FOR THREADED ROD IN NORMAL-WEIGHT CONCRETE

      at load adjustments - tension loads for threaded rod anchors

      at load adjustments - tension loads for threaded rod anchors

      1.Reference Supplemental Topics for Adhesive Anchors for oversize holes.
      2.Allowable load must be the lesser of the bond or steel strength.
      3.The allowable loads listed under allowable bond are based on a safety factor of 4.0.
      4.Refer to allowable load-adjustment factors for spacing and edge distance.
      5.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      6.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
      7.Anchors are not permitted to resist tension forces in overhead or wall installations unless proper consideration is given to fire-exposure and elevated-temperature conditions.

      SHEAR LOADS FOR THREADED ROD IN NORMAL-WEIGHT CONCRETE

      at load adjustments - shear loads for threaded rod anchors

      1.Allowable load must be the lesser of the load based on concrete edge distance or steel strength.
      2.The allowable loads based on concrete edge distance are based on a safety factor of 4.0.
      3.Refer to allowable load-adjustment factors for spacing and edge distance.
      4.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      5.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.

    • THREADED ROD (LIGHTWEIGHT CONCRETE)

      TENSION LOADS FOR THREADED ROD IN SAND-LIGHTWEIGHT CONCRETE

      at load adjustments - tension loads for threaded rod anchors in lightweight concrete

      1.Oversize holes may reduce load capacity.
      2.Allowable load must be the lesser of the bond or steel strength.
      3.100% of the allowable load is permitted at critical spacing. No reduction in spacing is allowed.
      4.Refer to allowable load-adjustment factors for edge distance.
      5.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      6.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
      7.Anchors are not permitted to resist tension forces in overhead or wall installations unless proper consideration is given to fire-exposure and elevated-temperature conditions.
      8.The allowable loads listed under allowable bond are based on a safety factor of 4.0.

      SHEAR LOADS FOR THREADED ROD IN SAND-LIGHTWEIGHT CONCRETE

      at load adjustments - shear loads for threaded rod anchors in lightweight concrete

      1.Allowable load must be the lesser of the load based on concrete edge distance or steel strength.
      2.The allowable loads based on concrete edge distance are based on a safety factor of 4.0.
      3.Refer to allowable load-adjustment factors for edge distance.
      4.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      5.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
      6.100% of the allowable load is permitted at critical spacing. No reduction in spacing is allowed.

    • THREADED ROD (STEMWALL)

       TENSION LOADS FOR THREADED ROD IN NORMAL-WEIGHT CONCRETE STEMWALL

      Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete Stemwall

      1.Allowable load must be the lesser of the bond or steel strength.
      2.The allowable loads listed under allowable bond are based on a safety factor of 4.0.
      3.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      4.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.

      Edge and end distances for threaded rod in concrete foundation stemwall corner installation

      Stemwall

    • THREADED ROD (CMU)

      TENSION AND SHEAR LOADS FOR THREADED ROD IN 6 AND 8″ NORMAL-WEIGHT GROUT-FILLED CMU (Fig 1 & 2)

      Tension and Shear Loads for Threaded Rod Anchors in 6 and 8-Inch Normal-Weight Grout-Filled CMU

      1.Threaded rods must comply with ASTM F1554 Grade 36 minimum.
      2.Values for 6- and 8-inch wide concrete masonry units (CMU) with a minimum specified compressive strength of masonry, f’m, at 28 days is 1500 psi.
      3.Embedment depth is measured from the outside face of the concrete masonry unit for installations through a face shell.
      4.Allowable loads may be increased 33 1/3% for short-term loading due to wind or seismic forces where permitted by code.
      5.Refer to in-service temperature sensitivity chart (“Product Data”) for allowable load adjustment for temperature.
      6.The tabulated allowable loads are based on a safety factor of 5.0 for installations under the IBC and IRC.
      7.Anchors must be spaced a minimum distance of four times the anchor embedment.

      Figure 1: Allowable anchor placement in grouted CMU face shell

      allowable anchor placement in grouted cmu face shell

      Figure 2: Anchor placement in grouted CMU mortar “T” joint

      anchor placement in grouted cmu mortar 't' joint

      TENSION AND SHEAR LOADS FOR THREADED ROD IN 6 AND 8″ NORMAL-WEIGHT GROUT-FILLED CMU (Fig 3)

      Tension and Shear Loads for Threaded Rod Anchors in 6 and 8-Inch Normal-Weight Grout-Filled CMU

      1.Threaded rods must comply with ASTM F1554 Grade 36 minimum.
      2.Values for 6- and 8-inch wide concrete masonry units (CMU) with a minimum specified compressive strength of masonry, f’m, at 28 days is 1500 psi.
      3.Embedment depth is measured from the outside face of the concrete masonry unit for installations through a face shell.
      4.Allowable loads may be increased 33 1/3% for short-term loading due to wind or seismic forces where permitted by code.
      5.Refer to in-service temperature sensitivity chart (“Product Data”) for allowable load adjustment for temperature.
      6.The tabulated allowable loads are based on a safety factor of 5.0 for installations under the IBC and IRC.
      7.Anchors must be spaced a minimum distance of four times the anchor embedment.
      8.Shear load applied perpendicular to edge of CMU wall.
      9.Shear load applied parallel to edge of CMU wall.

      Figure 3: Anchor installed in cell opening (top of wall)

      Anchor installed in cell opening

    • THREADED ROD (BRICK MASONRY)

      TENSION AND SHEAR LOADS FOR THREADED ROD IN UNREINFORCED BRICK MASONRY WALLS MINIMUM URM WALL THICKNESS IS 13″ (3 WYTHES THICK)

      Tension and Shear Loads for Installations in Unreinforced Brick Masonry Walls Minimum URM Wall Thickness is 13"

      1.Threaded rods must comply with ASTM F1554 Grade 36 minimum.
      2.All holes are drilled with a 1″ diameter carbide-tipped drill bit with the drill set in the rotation-only mode.
      3.The unreinforced brick walls must have a minimum thickness of 13 inches (three wythes of brick).
      4.The allowable load is applicable only where in-place shear tests indicate minimum net mortar strength of 50 psi.
      5.The allowable load for Configuration B and C anchors subjected to a combined tension and shear load is determined by assuming a straight-line relationship between allowable tension and shear.
      6.The anchors installed in unreinforced brick walls are limited to resisting seismic or wind forces only.
      7.Configuration A has a straight threaded rod or rebar embedded 8 inches into the wall with a 31/32″ diameter by 8-inch long screen tube (part # ATS758 or ATS758P). This configuration is designed to resist shear loads only.
      8.Configuration B has a 3/4″ threaded rod bent and installed at a 22.5-degree angle and installed 13 inches into the wall, to within 1-inch (maximum) of the exterior wall surface. This configuration is designed to resist tension and shear loads. The pre-bent threaded rod is installed with a 31/32″ diameter by 13-inch long screen tube (part # ATS7513 or ATS7513P).
      9.Configuration C is designed to resist tension and shear forces. It consists of a 5/8″ diameter, ASTM F1554 Grade 36 threaded rod and an 8″ long steel sleeve (part # AST800) and a 31/32″ diameter by 8-inch long screen tube (part # ATS758). The steel sleeve has a plastic plug in one end. A 6″ by 6″ by 3/8″ thick ASTM A 36 steel plate is located on the back face of the wall.
      10.Special inspection requirements are determined by local jurisdiction and must be confirmed by the local building official.
      11.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.

    • REBAR (NORMAL-WEIGHT CONCRETE)

      TENSION LOADS FOR REBAR IN NORMAL-WEIGHT CONCRETE

      at load adjustments - tension loads for rebar

      1.Oversize holes may reduce load capacity.
      2.Allowable load must be the lesser of the bond or steel strength.
      3.The allowable loads listed under allowable bond are based on a safety factor of 4.0.
      4.Refer to allowable load-adjustment factors for spacing and edge distance.
      5.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      6.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
      7.Anchors are not permitted to resist tension forces in overhead or wall installations unless proper consideration is given to fire-exposure and elevated-temperature conditions

       

      SHEAR LOADS FOR REBAR IN NORMAL-WEIGHT CONCRETE

      at load adjustments - shear loads rebar dowels

      1.Allowable load must be the lesser of the load based on concrete edge distance or steel strength.
      2.The allowable loads based on concrete edge distance are based on a safety factor of 4.0.
      3.Refer to allowable load-adjustment factors for spacing and edge distance.
      4.Refer to in-service temperature sensitivity chart (“Product Data” tab) for allowable load adjustment for temperature.
      5.Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.

  • Surfaces to receive adhesive must be clean and free of frost. The base material temperature must be 0°F or above at the time of installation. For information on installations below 0°F contact Simpson Strong-Tie. Mixed material in nozzle can harden in 5–7 minutes. For installations in or through standing water, see Supplemental Topics – Adhesive Anchors for details.

    When the concrete temperature is at or below freezing, ensure any holes drilled in advance are free of frost or ice.

    HOLE PREPARATION: Horizontal, Vertical, and Overhead Applications

    1. Drill hole to specified diameter and depth.

    2 - Blow

    2. Remove dust from hole with oil-free compressed air for a minimum of 4 seconds. Compressed air nozzle must reach the bottom of the hole.

    3 - Brush

    3. Clean with a nylon brush for a minimum of 4 cycles. Brush should provide resistance to insertion. If no resistance is felt, the brush is worn and must be replaced.

    4 - Blow

    4. Remove dust from hole with oil-free compressed air for a minimum of 4 seconds. Compressed air nozzle must reach the bottom of the hole.

    CARTRIDGE PREPARATION:

    1. Check expiration date on product label. Do not use expired product.Product is usable until end of printed expiration month.

    2. Open cartridge per package instructions.

    Attach

    3. Attach proper Simpson Strong-Tie® nozzle to cartridge. Do not modify nozzle.

    4 - Blow

    4. Insert cartridge into dispensing tool.

    4 - Blow

    5. Dispense adhesive to the side until properly mixed (uniform color).

    FILLING THE HOLE:
    • VERTICAL

      DRY AND DAMP HOLES:

      Fill

      1. Fill hole 1/2 – 2/3 full, starting from bottom of hole to prevent air pockets. Withdraw nozzle as hole fills up.

      Insert

      2. Insert clean, oil free anchor (threaded rod or rebar), turning slowly until the anchor contacts the bottom of the hole.

      Do not disturb

      3. Do not disturb anchor until fully cured. (See cure schedule for specific adhesive.)

      WATER FILLED HOLES:

      Fill

      1. Fill hole completely full, starting from bottom of hole to prevent water pockets. Withdraw nozzle as hole fills up.

      Insert

      2. Insert clean, oil-free anchor (threaded rod or rebar), turning slowly until the anchor contacts the bottom of the hole.

      Do not disturb

      3. Do not disturb anchor until fully cured. (See cure schedule for specific adhesive.)

    • HORIZONTAL AND OVERHEAD

      Install

      1. Install Simpson Strong-Tie® ARC adhesive retaining cap. Refer to Adhesive Retaning Caps for proper ARC size.

      Fill

      2. Fill hole 1/2 – 2/3 full, starting from bottom of hole to prevent air pockets. Withdraw nozzle as hole fills up.

      Insert

      3. Insert clean, oil-free anchor (threaded rod or rebar), turning slowly until the anchor contacts the bottom of the hole.

      Do Not Disturb

      4. Do not disturb anchor until fully cured. (See cure schedule for specific adhesive.)

    • ANCHORING WITH SCREENS

      Fill

      1. Fill screen completely. Fill from the bottom of the screen and withdraw the nozzle as the screen fills to prevent air pockets. (Opti-Mesh® screens: Close integral cap after filling.)

      Insert

      2. Insert adhesive filled screen into hole.

      Insert

      3. Insert clean, oil free anchor (threaded rod or rebar), turning slowly until the anchor contacts the bottom of the screen.

      Do Not Disturb

      4. Do not disturb anchor until fully cured. (See cure schedule for specific adhesive.)

  • ACCESSORIES FOR AT:

    ACCESSORY

    DESCRIPTION 

    AT PRODUCT 

    AMN19QAMN813 19-Element, High-Efficiency Static Mixing Nozzle for Acrylic Adhesive AT10AT13

    AT30

    CDT10SEDT22B Manual Dispensing Tool for Single Cartidge Adhesives AT10
    ADT813SADT813 Manual Dispensing Tool for 12.5 oz. Cartridges AT13
    ADT30SEDT22AP Manual Dispensing Tool for 30 oz. Cartridges AT30
    ADT30CKTEDT22CKT and charger Battery-Powered Dispensing Tool for 30 oz. Cartridges AT30
    ADTA30PADT30P Pneumatic Dispensing Tool for 30 oz. Cartridges AT30

  • TEST CRITERIA:

    Anchors installed with AT adhesive have been tested in accordance with ICC-ES’s Acceptance Criteria for Adhesive Anchors (AC58).

    In addition, anchors installed with AT adhesive have been tested in accordance with ICC-ES’s Acceptance Criteria for Unreinforced Masonry Anchors (AC60) and NSF/ANSI Standard 61, Drinking Water System Components – Health Effects.

    PROPERTY TEST METHOD RESULTS
     Consistency (77°F)  ASTM C 881  Non-sag/thixotropic paste
     Heat deflection  ASTM D 648  149°F (65°C)
     Bond strength (moist cure)  ASTM C 882  2,900 psi (2 days) 2,970 psi (14 days)
     Water absorption  ASTM D 570  0.23% (24 hours)
     Compressive yield strength  ASTM D 695  10,210 psi (7 days)
     Compressive modulus  ASTM D 695  571,000 psi (7 days)
     Gel time (77°F)  ASTM C 881  9 min – Thin film

     

     

     

     

     

  • CODE REPORTS:

    *Applies to all AT products.

    The “Load Tables” tab values based upon results from the most recent testing and may not reflect those in current code reports. Where code jurisdictions apply, consult the current reports for applicable load values

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.