All properties are required to maintain drainage on their own property or to an approved drainage easement and to the public way. No water can find its way onto adjoining properties beyond the easement. Sloping lots will require special grading attention, including V-ditches, swales and rock/masonry walls. Slope cannot be greater than 2:1 (two horizontal to one vertical). Rock/masonry walls are required to be installed when slopes exceed 2:1.

Requirements for submitting a permit application for a rock/masonry wall

1. Rock/Masonry Wall Permit Application
2. Site plan (see sample Site Plan diagram) showing where on the property the wall will be placed using small circles. Note the type of wall(s), height and length of wall(s) and the valuation of the project. Show how drainage will flow with arrows. Also be sure to include drawings of any structures or other items on your lot or neighboring properties that may be within the surcharge area of a wall (see surcharge information below).
   Surcharges: Any structure (or other item in the list above) within the 45-degree plane of a rock wall causes a surcharge on that wall, which may cause the failure of the wall (as shown in the second diagram above). Any wall holding a surcharge, regardless of height, will require engineering to prevent failure (see item #3).
3. Engineering from a Utah state licensed geotechnical engineer with electronic engineer’s stamp.
4. Special Inspection Agreement (except when building a block or poured-in-place concrete wall, in which case, Herriman Building Inspectors will do the footing and foundation or bond beam inspections).
5. If wall(s) will be constructed in a public utility easement, first obtain easement waiver from all Utilities (see Public Utility Easements) and submit copies with your permit application.