- The allowable loads are based on a factor of safety of 4.0.
- Allowable loads may be increased 33 1/3% for short term loading due to wind or seismic forces where permitted by code.
- The minimum anchor spacing is 15 inches.
- The minimum concrete thickness (depth) is 12 inches.
- Allowable loads may be interpolated for compressive strengths between 2,500 and 4,500 psi.
