AT High-Strength Anchoring Adhesive
Tension and Shear Loads for Threaded Rod Anchors in
Lightweight, Medium-Weight and Normal-Weight Hollow CMU
Anchor Installed in Face Shell with Stainless-Steel Screen Tube (see figure 4)
- Threaded rods must comply with ASTM F1554 Grade 36 minimum.
- 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.
- Embedment depth is measured from the outside face of the concrete masonry unit for installations through a face shell.
- 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.
- Anchors must be spaced a minimum distance of four times the anchor embedment.
- Set drill to rotation only mode when drilling into hollow CMU.
- Allowable loads may not be increased for short-term loading due to wind or seismic forces.
Figure 4: Anchor installed in face shell with
screen tube in hollow cell
Anchor Installed in Face Shell with ATSP (Plastic) Screen Tube
- Threaded rods must comply with ASTM F1554 Grade 36 minimum.
- The tabulated allowable loads are based on a safety factor of 5.0 for installations under the IBC and IRC.
- Edge distances may be reduced to 4" with a corresponding 37% reduction in tension capacity. Shear capacity is unaffected.
- Values for 8-inch wide, lightweight, medium-weight and normal-weight concrete masonry units with min. compressive strength of 1,900 psi and 1 1/4" thick face shell.
- Embedment depth is measured from the outside face of the concrete masonry unit.
- Refer to in-service temperature sensitivity chart for allowable load adjustment for temperature.
- Allowable loads may not be increased for short-term loading due to wind or seismic forces. Wall design must satisfy applicable design standards and be capable of withstanding applied loads.
- Set drill to rotation only mode when drilling into hollow CMU.
Anchor Installed in Face Shell with ATSP (Plastic) Screen Tube