Earthen channel side slopes shall be no steeper than 3 to 1. Flatter slopes may be required to prevent erosion and for ease of maintenance. Where channels will be lined, side slopes shall be no steeper than 1-1/2 to 1 with adequate provisions made for weep holes. Side slopes steeper than 1-1/2 to 1 may be used for lined channels, provided that the side lining and structural retaining wall are designed and constructed with provisions for live and dead load surcharge.
(Ord. 1995-10 § XII C, passed 10-13-1995)