Laserfiche WebLink
• Section 816.153(b) Continued. <br />The roadway drainage has been previously described in Section 816.153 <br />(a)(1). The road sections have been designed in accordance with the <br />above standards to provide good drainage and to control erosion <br />whether in a cut or fill situation. (See Figure 25, Existing Class <br />I Road - Typical Sections.; and Figure 26, Proposed Class I Road - <br />Typical Sections.) <br />Drainage control for Class I roads has been designed for the 10-year, <br />24-hour precipitation event, as required. Ditches are proposed on <br />both sides of cut sections and on the uphill side of cut-and-fill <br />sections, as shown in Figure 25, Existing Class I Roads - Typical <br />Sections, and Figure 26, Proposed Class I Roads - Typical Sections. <br />In some cases roads have been regraded to drain all runoff to a <br />single, uphill side ditch. The roadside ditches are specified as <br />triangular in shape, with 2:1 slopes and one foot minimum depth. <br />These specifications are more than adequate to handle the design <br />flow, as demonstrated in the designs provided in Exhibit 42, Drainage <br />and Sediment Control Plan. <br />(c) Culverts and bridges. (1j(i) Culverts with an end area of 35 square <br />feet or less shall be designed to safely pass the 10-year, 24- <br /> <br />816-191 aaR <br />Revised - January, 1991 <br />