A spiral 80m long connects a tangent with a 7° 30' circular curve. If the stationing of the T.S. is 12+000, and the gauge of the tract on the curve is 1.5m. Determine the following: (a) the elevation of the outer rail at the midpoint, if the velocity of the fastest train that can pass over the curve is 60kph, (b) the spiral angle at the first quarter point, (c) the deflection angle at the end point, and (d) the offset from the tangent at the second quarter point.

A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the PC is at station 3 + 65.00 ft, what is the intermediate chord length (ft)  (i.e. the straight line distance between two sequential full stations)?

Describe about the flow nets and why are they used?

E] A simple circular horizontal curve connects the following two bearings: • N 75° W • S 85° E The station number at the point of intersection (PI) is 120+50.00, and the radius of the curve is 3000ft. (a). Calculate the degree of curve, curve length, and tangent length. (b). Determine the station numbers at PC and PT. (c). A sight obstruction is located at a distance of 10.00ft from the center of the inside lane of this curved two-lane two-way highway section, what is the available sight distance on the curve?