- 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).
- Values are for 8-inch wide CMU, Grade N, Type II , lightweight, medium-weight and normal-weight concrete masonry units conforming to UBC Standard 21-4 or ASTM C90.
- The masonry units must be fully grouted with grout complying with UBC Section 2103.4 or IBC section 2103.8.
- The minimum specified compressive strength of masonry, f'm, at 28 days is 1,500 psi.
- Allowable loads may be increased 33 1/3% for short-term loading due to wind or seismic forces where permitted by code.
- Grout filled CMU wall design must satisfy applicable design standards and be capable of withstanding applied design loads.
- Loads are based on anchor installed in either the web or grout filled cell opening in the top of wall.
Figure 3
Anchor installed in cell opening (top of wall)
