Question

Question 8: Given the following plan set, identify the following for the mainline centerline proposed alignment: a) Stationing for the PC: b) Stationing for the PT: c) Radius of the Curve: d) Intersection Angle: ENTERSUC 78390100300 BARRETT CINDY A 21.390000100 7882020400 LIMITED PARTNERSHIP DONALD PS CONSTRUCTION "DWY-1" LINE SEE DRIVEWAY PLANS SURVEY CONTROL POINT 22 N-600196 07 E1118591.955: FL-312-94 0 ORDWAY DR SE 28980300000 SWEET CLOVER PC 3-2119 MILLIS DONALD CONSTRUCTION DWY-LINE SEE DRIVEWAY PLANS TRANSMISSION TOWER L391.97 4-08139'59" R=275.00 PT 7.13.16 22718430200 RIVAS DANIEL FRED 5017627 CONSTRUCTION "A" LINE-

Answer 1

8) a) Stationing of the PC = 3+21.19

b) Stationing of the PT = 7+13.16

c) Radius of the curve = 275.00 ft

d) Intersection angle = 081^o 39' 59"

9) a) External distance = $R(sec(\Delta/2)-1)$ = 275 (sec(081^o 39' 59"/2) - 1) = 88.46 ft

b) Length of the tangent of the curve = $Rtan(\Delta/2)$ = 275 tan(081^o 39' 59"/2) = 237.652 ft

c) Length of the curve = 391.97 ft

d) Length of the middle ordinate = $R(1-cos(\Delta/2))$ = 275 (1 - cos(081^o 39' 59"/2)) = 66.9305 ft