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Anchorage Adhesives

Typically rod runs will terminate at the foundation, using the dead load of the concrete to ultimately resist the uplift demands. The building code does, however, allow the Designer of Record to use a percentage of the dead load expected to exist during a wind event (with the percentage based on load combinations for either Strength or Allowable Stress Design). Consequently, if the uplift loads are low enough and dead loads are high enough, it is possible to terminate the rod runs under upper wood floors.

AC391 Criteria Section AC391 Requirement
6.2.4.5 and 6.3.3.5 Design of the anchorage is the responsibility of the design professional and must be performed in accordance with the applicable code.
Wood-Beam Plate Detail
Wood-Beam Plate Detail
Concrete Anchorage Detail
Concrete Anchorage Detail
Steel Beam Detail
Steel Beam Detail

SET-3G™ High-Strength Epoxy Adhesive

SET-3G is the latest innovation in epoxy anchoring adhesives from Simpson Strong-Tie. Formulated to provide superior performance in cracked and uncracked concrete at elevated temperatures, SET-3G installs and performs in a variety of environmental conditions and temperature extremes. The exceptional bond strength of SET-3G results in high design strengths at shallow embedment depths.

SET-3G™ High-Strength Epoxy Adhesive
SET-3G Adhesive

AT-XP® Fast-Curing Anchoring Adhesives

AT-XP anchoring adhesive from Simpson Strong-Tie has been formulated for high-strength anchorage of threaded rod and rebar into concrete under a wide range of conditions, such as cold weather installations. Code listed per IAPMO UES ER-263 in accordance with ICC-ES AC308, ACC355.4 and IBC 2012 requirements for cracked and uncracked concrete in static or seismic conditions, AT-XP anchoring adhesive has demonstrated superior performance in reduced-temperature testing (14°F (–10°C)).

AT-XP® Fast-Curing Anchoring Adhesives
AT-XP Adhesive

Allowable (ASD) Tension Loads for Post-Installed Anchors into Uncracked Concrete for Wind Loads

Allowable (ASD) Tension Loads for Post-Installed Anchors into Uncracked Concrete for Wind Loads
  1. Allowable tension loads are based on the Strength Design provisions of ACI 318-14 and have been converted to Allowable Stress Design (ASD) levels by applying a 0.6 factor for Wind loads.
  2. Tabluated values are applicable to the conditions listed below. Refer to the Simpson Strong-Tie Anchor Designer™ software for other conditions.
    1. Minimum concrete compressive strength = 2,500 psi
    2. Uncracked concrete
    3. Dry concrete
    4. Periodic special inspection
    5. Maximum short-term temperature = 150°F
    6. Maximum long-term temperature = 110°F
  3. Tabulated values apply to design tension loads consisting of 100% wind loads.
Interior Thickened Slab
Interior Thickened Slab
Turned-Down Slab (shown) or Stem Wall
Turned-Down Slab (shown) or Stem Wall
Elevated Slab Edge
Elevated Slab Edge

Technical Data

SD Adhesive Anchor Tension Capacities for Wind
Anchor Diam. (in.) Center of Interior Thickened Slab Edge of Turned Down Slab or Stemwall Edge of Elevated Slab
Embed. Depth (in.) Min. End Dist. (in.) Min. Concrete Thick. (in.) SET-XP AT-XP Embed. Depth (in.) Min. Concrete Thick. (in.) Min. End Dist. (in.) SET-XP AT-XP Embed. Depth (in.) Min. Concrete Thick. (in.) Min. End Dist. (in.) SET-XP AT-XP
1¾ Edge Dist. 2¾ Edge Dist. 1¾ Edge Dist. 2¾ Edge Dist. 1¾ Edge Dist. 2¾ Edge Dist. 1¾ Edge Dist. 2¾ Edge Dist.
3/8 3 8 4.875 2,006 2,109 7 8.875 8 2,605 2,733 2,605 2,733 6 10 8 2,359 3,002 2,461 3,122
5 8 6.875 3,299 3,394 7 8.875 12 2,871 3,035 2,871 3,035 7 12 12 2,753 3,502 2,871 3,642
1/2 4 8 6.500 2,617 3,568 8.5 11.000 8 2,605 2,605 2,605 2,733 6 10 8 2,250 2,660 2,727 3,273
5 8 7.500 3,271 4,460 8.5 11.000 12 3,099 3,204 3,099 3,204 7 12 12 2,625 3,103 3,181 3,819
5/8 5 8 8.125 2,753 3,786 9.5 12.625 8 2,605 2,733 2,605 2,733 6 10 8 2,270 2,622 2,982 3,460
6 8 9.125 3,304 4,544 9.5 12.625 12 3,099 3,204 3,099 3,204 8 12 12 3,042 3,514 3,976 4,613
3/4 6 8 9.750 2,807 3,813 10.5 14.250 8 2,605 2,733 2,605 2,733 6 10 8 2,183 2,482 3,039 3,448
8 8 11.750 3,743 4,721 10.5 14.250 12 3,099 3,102 3,099 3,204 8 12 12 3,127 3,556 4,403 4,994
Allowable Adhesive Anchor Tension Loads for Wind
Anchor Diam. (in.) Center of Interior Thickened Slab Edge of Turned Down Slab or Stemwall Edge of Elevated Slab
Embed. Depth (in.) Min. End Dist. (in.) Min. Concrete Thick. (in.) SET-XP AT-XP Embed. Depth (in.) Min. Concrete Thick. (in.) Min. End Dist. (in.) SET-XP AT-XP Embed. Depth (in.) Min. Concrete Thick. (in.) Min. End Dist. (in.) SET-XP AT-XP
1¾ Edge Dist. 2¾ Edge Dist. 1¾ Edge Dist. 2¾ Edge Dist. 1¾ Edge Dist. 2¾ Edge Dist. 1¾ Edge Dist. 2¾ Edge Dist.
3/8 3 8 4 7/8 1,979 1,265 7 8 7/8 8 1,565 1,640 1,565 1,640 6 10 8 1,415 1,800 1,475 1,875
5 8 6 7/8 3,299 2,035 7 8 7/8 12 1,725 1,820 1,725 1,820 7 12 12 1,650 2,100 1,725 2,185
1/2 4 8 6 1/2 1,570 2,140 8 1/2 11 8 1,565 1,565 1,565 1,640 6 10 8 1,350 1,595 1,635 1,965
5 8 7 1/2 1,965 2,675 8 1/2 11 12 1,860 1,920 1,860 1,920 7 12 12 1,575 1,860 1,910 2,290
5/8 5 8 8 1/8 1,650 2,270 9 1/2 12 5/8 8 1,565 1,640 1,565 1,640 6 10 8 1,360 1,575 1,790 2,075
6 8 9 1/8 1,980 2,725 9 1/2 12 5/8 12 1,860 1,920 1,860 1,920 8 12 12 1,825 2,110 2,385 2,770
3/4 6 8 9 3/4 1,685 2,290 10 1/2 14 1/4 8 1,565 1,640 1,565 1,640 6 10 8 1,310 1,490 1,825 2,070
8 8 11 3/4 2,245 2,835 10 1/2 14 1/4 12 1,860 1,860 1,860 1,920 8 12 12 1,875 2,135 2,640 2,995