Figure 11-22.—Compound curve.QUESTIONSQ1. Using the data given for the compound curveshown in figure 11-22, compute the stations atPC_{1}, PI_{1}, PCC (point of compound curvature),PI_{2}, and PT_{2}.Q2. Referring again to figure 11-22, assume that youare tasked to stakeout the compound curve usingfull stations. What deflection angles (d_{1}, d_{2}, andd) and chord lengths (C_{1}, C_{2}, and C) will you usefor the 12° curve?Q3. Assume that you are to set half stations for a400-foot symmetrical vertical curve. The tan-gents (g_{1} = + 3.2 percent, g_{2 }= –1.6 percent)intersect at Station 14 + 00. The tangent eleva-tion at the PVI is 131.20 feet. Compute the fol-lowing information for this curve:a. Elevation at the PVCb. Elevation at the PVTc .d.Grade elevation on the curve at the PVIGrade elevation on the curve at station13 + 50Station number and grade elevation on thee.curve at the turning pointQ4. Assume that you are to set half stations for a600-foot vertical curve. The tangents (g_{1 }= –3percent, g_{2 }= –8 percent) intersect at Station15 + 00, which has an elevation of 640 feet abovemean sea level. You may also assume thatl_{1 }= 400 feet and l_{2} = 200 feet. Compute thefollowing information for this curve:a. Elevation at the PVCb. Elevation at the PVTc. Grade elevation on the curve at the PVId. Grade elevation on the curve at station13 + 50e. Station number and grade elevation on thecurve at the turning point11-21

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