Laserfiche WebLink
14-7 <br />2) Identify potential sites. <br />3) Select design recurrence intervals. <br />4) Select design particle size and settling efficiency. <br />5) Determine design flows and the volume of the settling zone. <br />6) Design the inlet zone. <br />7) Determine settling zone geometry. <br />8) Determine volume of the sediment storage zone. <br />9) Design the outlet zone. <br />The preceeding process, in an appropriately abbreviated and more general <br />form, is also applicable to planning of one or more SB. <br />The nine step SB design process is presented in the following sections <br />of this unit. A simplification of an actual designed and constructed <br />permanent SB is used to illustrate some aspects of the design process. <br />The example SB, the west SB shown in Figure 14.3, was designed for and <br />subsequently constructed in the town of Madison, WI. (Donohue, 1981; <br />Raasch, 1982). The primary purpose of the SB was to intercept suspended <br />solids and buoyant debris from a 225 acre urban and urbanizing area and <br />thereby pcevent the materials fraun entering and being deposited in an <br />arboretum, an environmentally sensitive natural area. Construction of <br />