Division 13-10-011
Resource and Slope Design Criteria

Sections:

13-10-011-0001    Resource and Slope Design Criteria

13-10-011-0001 Resource and Slope Design Criteria

A.    Tree and shrub resources located in existing or proposed right-of-way or easements granted or to be granted to the City of Flagstaff shall be considered in the civil design. The resources shall be saved and integrated into the design. Prior to the start of construction, resources shall be fenced, as required, so as to protect them during the construction process.

B.    Roadway design criteria shall consider existing topography so as to minimize cuts and fills. Except as provided herein respecting maximum slope criteria, roadways shall follow existing topography as best as possible. Slope protection shall be provided pursuant to the City of Flagstaff Stormwater Design Manual (Chapter 10). If retaining walls are warranted, the design shall meet the following criteria:

1.    Walls shall blend with the natural features of the setting by the use of native rock or other materials that convey a scale, color, and texture similar to that of traditional rock (split face block and scored and textured concrete are examples).

2.    Limit the height of a retaining wall to five (5) feet or less when feasible.

3.    Where greater heights are necessary, use a series of terraced or stepped walls with the width of the terrace no less than three (3) feet. (Ord. 2017-22, Rep&ReEn, 07/05/2017; Ord. 2024-13, Amended, 4/16/2024 (Res. 2024-15))