A. Minimum Setbacks: The setback from a rockery wall to a building or structure shall meet all setback requirements as outlined in the International Building Code. Foundation clearance from slopes or the setback from a rockery wall shall be a minimum of the height of the rockery wall.

B. Separate Rockery Walls Considered One (1) Wall: For height and setback restrictions separate rockery walls shall be considered one (1) wall, unless separated by a horizontal distance greater than the vertical height of the lower wall. The distance shall be measured from the outside of the foundation of the structure to the exposed face of the rockery wall. This provision applies to building or structures at the low and high side of the wall.

C. Terraced Rockery Walls: Multiple rockery walls, designed as terraced retaining walls, shall be separated a minimum distance of one-half (½) the height of the lower rockery wall to another rockery wall. The height of an upper wall shall not exceed the height of a lower wall. The total combined height of all rockery walls shall not exceed sixteen feet (16').

D. Rockery Walls in Utility Easements: Rockery walls shall not be constructed within utility easements without prior written permission in a form acceptable to the city from each affected utility. Notwithstanding any written permission, the city reserves the right to deny a permit for a wall within, or over, a utility easement. Rock walls shall be limited to a height of three feet (3') within the street-frontage utility easement. (Ord. 2019-10-002, 10-10-2019)