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AT High Strength Acrylic-Tie® Anchoring Adhesive
Tension and Shear Loads for Threaded Rod Anchors
in 6 and 8-Inch Normal-Weight Grout Filled CMU
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Figure 1: Allowable anchor placement in grouted CMU face shell
Figure 2: Anchor placement in grouted CMU mortar "T" joint
Tension and Shear Loads for Threaded Rod Anchors in 6 and 8-Inch Normal-Weight Grout-Filled CMU
See Notes 1-7 Below
Tension and Shear Loads for Threaded Rod Anchors in 6 and 8-Inch Normal-Weight Grout-Filled CMU
- Threaded rods must comply with ASTM A 307 minimum.
- Values for 6 and 8-inch wide CMU Grade N, Type II concrete masonry units conforming to UBC Standard 21-4 or ASTM C90. The masonry units, when grouted, must be fully grouted with grout complying with UBC Section 2103.4, or IBC Section 2103.12. Mortar is prepared in accordance with Section 2103.3 of the UBC and UBC Standard 21-15, or IBC Section 2103.8. The minimum specified compressive strength of masonry, f'm, at 28 days is 1,500 psi.
- Embedment depth is measured from the outside face of the concrete masonry unit for installations through a face shell.
- Allowable loads may not be increased for short-term loading due to wind or seismic forces.
- Refer to In-Service Temperature Sensitivity chart for allowable load adjustment for temperature.
- The tabulated allowable loads are based on a safety factor of 5.0 for installations under the IBC and IRC. For installations under the UBC use a safety factor of 4.0 (multiply the tabulated allowable loads by 1.25).
- Anchors must be spaced a minimum distance of four times the anchor embedment.
- Shear load applied perpendicular to edge of CMU wall.
- Shear load applied parallel to edge of CMU wall.
Figure 3: Anchor installed in cell opening (top of wall)
