The P.I. (point ‘V’) of a proposed compound curve lies in an inaccessible location. A point ‘A’ is chosen as the P.C. and a distance of XXXXXXXXXXfeet is measured to a point ‘X’ on the forward tangent. Other measurements are angle VAX = 45° 34’ and an angle VXA = 39° 46’. The longer radius curve has a degree of curve = 2° 30’ and starts at ‘A’. Angle IL is taken to be 46° 00’
Determine (a.) The degree of curve for the shorter radius of curve to the nearest 20 seconds; (b.) the distance and direction from point ‘X’ to the P.T.
Show all work and formulae used.
2. Given the following parts of a compound curve; determine the remaining parts(I, RL,TL,TS)
Show all work and formulae used. (30 Points)?IL = 45° 18’; IS = 44° 26’; RS = XXXXXXXXXXft; DL = 19° 05' 55"
3. Given the following spiral curve data: D = 7° 30’ 30”; LS = 175 feet; I = 36° 44’ 00”; PI = Sta XXXXXXXXXX
Determine the following spiral components ( D s, X, Y, Xo, o, LCS, ST, LT, H, and Es) and the stationing of the T.S., S.C., C.S., and S.T.
Show all work and formula used.
4. Given: A compound highway curve (arc definition) has a back tangent of N 45o E. Also IS and IL equal 45o each.
Required: What is the azimuth of the forward tangent? (10 Points)
Document Preview: 1. The P.I. (point ‘V’) of a proposed compound curve lies in an inaccessible location. A point ‘A’ is chosen as the P.C. and a distance of XXXXXXXXXXfeet is measured to a point ‘X’ on the forward tangent. Other measurements are angle VAX = 45° 34’ and an angle VXA = 39° 46’. The longer radius curve has a degree of curve = 2° 30’ and starts at ‘A’. Angle IL is taken to be 46° 00’
Determine (a.) The degree of curve for the shorter radius of curve to the nearest 20 seconds; (b.) the distance and direction from point ‘X’ to the P.T.
Show all work and formulae used.
2. Given the following parts of a compound curve; determine the remaining parts(I, RL,TL,TS)
Show all work and formulae used. (30 Points)?IL = 45° 18’; IS = 44° 26’; RS = XXXXXXXXXXft; DL = 19° 05' 55"
3. Given the following spiral curve data: D = 7° 30’ 30”; LS = 175 feet; I = 36° 44’ 00”; PI = Sta XXXXXXXXXX
Determine the following spiral components ( ??s, X, Y, Xo, o, LCS, ST, LT, H, and Es) and the stationing of the T.S., S.C., C.S., and S.T.
Show all work and formula used.
4. Given: A compound highway curve (arc definition) has a back tangent of N 45o E. Also IS and IL equal 45o each.
Required: What is the azimuth of the forward tangent? (10 Points)