A 48-inch RCP outfall discharges directly onto the ground. The pipe has a slope of 2.0 percent and an n-value of 0.012 and carries a design discharge of 75 cfs. Design a riprap apron for the outfall.
A 30-foot-wide road is proposed to be constructed over an existing stream as shown in Figure 13-24. Determine the best layout for a proposed 10-footwide box culvert to fit the following constraints:
a. The culvert must extend 10 feet beyond each edge of the proposed road.
b. The cost of the proposed culvert is $2000 per linear foot.
c. The cost of stream relocation is $250 per linear foot.
d. The maximum culvert skew is 24°. To analyze this problem, make multiple photocopies of then sketch alternate proposed culverts on the copies.
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