Mecklenburg County Common Code Defects Commercial- Building Code Defects • Random rock location in bottom of footer trench and left in place for footer inspection. Code Description Section 1805.4.1 “Footings shall be so designed that the allowable bearing capacity of the soil is not exceeded, and that differential settlement is minimized”. Possible Options: The differential settlement that can be created by a rock left in a footer trench must be evaluated by a soil engineer or removed from footer trench. Disclaimer: There may be other ways to comply with the Code. If so, you are not required to use this method to comply with the Code. You may want to investigate other options, or consult with a design professional identifying an equally code compliant solution.