QUESTION 2 A 7.2% upgrade meets a 1.4% upgrade. The operating speed for the road is 100 km/h. The chainage and reduced levels 80 m after the vertical curve are 1420.00m and 96.055m respectively. (a) Determine the vertical curve length to be adopted (round your answer to the nearest 50m). (b) Calculate the RL and chainage at TP1. (c) Calculate the RL on the gradeline and curve at chainage 1287.00m.

Calculate the maximum permissible speed on curve of high speed B.G. track having the following particulars: Degree of the curve =2°, Amount of superelevation = 150 m, Max. speed of the section likely to be sanctioned = 165 kmph. = 8.0 cm, Length of transition curve

Q1. A rising gradient AB and a falling gradient BC are to be connected by a vertical curve. Based on the data given in Table Q1, design the curve at 20 metres intervals. First Grade (± %) Second Grade (± %) Sighting Distance (SSD) Driver's eye (h₂) Object height (h₂) 3.6 -1.7 150 1.05 0.3 Table Q1 (Units are in metres) RL of highest/lowest pt Chainage of highest/lowest pt 38.788 3621.191

A rising gradient AB and a falling gradient BC are to be connected by a vertical curve. Based on the data given in Table Q1, design the curve at 20 metres intervals. Table Q1 (Units are in metres) First Grade (± %) Second Grade (+ %) Sighting Distance (SSD) Driver's eye (h₁) Object height (h₂) 4.2 -1.8 145 1.05 0.3 F G RL of highest/lowest pt Chainage of highest/lowest pt| H 39.171 4048.600 K

Q1) The project speed is 100 km/h on a divided state road with a vertical curve. The driver's transition reaction time is 2.0 seconds; the friction coefficient is 0.4. Accordingly, calculate the following: a) The slopes of and g2. b) The vertical curve length (L). c) Calculate the grade line elevation of the points T1 and T2 as well every 30 meters and present them in a table format. T1 A Station 0+000 Elevation = 400 m Station 1+200 Elevation 460 m P T2 B Station 2+200 Elevation 490 m

The arterial road with a 100 km/h design speed will be constructed on the flat terrain. At one section, the equal tangent vertical curve as shown in Table 3 is proposed.   Table 3: Parameters of Vertical Alignment Length 490 m PVC station 3+700.000 PVC elevation 460 m Initial grade -3.5% Final grade 6.5%   (a) Calculate the stationing and elevation of the low point, PVI and PVT.    (b) Calculate the minimum length of curve to meet stopping sight distance requirements

C. Design a Two way - one lane Highway with the following specification. V - 90 kph e - 0.05 m. 15 m SD - 115 m wheel base - 2.25 m c- 3 Pavement is rotated at center | - 20° Determine the following: Minimum Radius Road Widening Transition Spiral (if any) Vertical Curve Tangent and Length of Curve Road Profile for horizontal alignment with station if the start station is 1 • 000

Question in Picture

There is a need for conducting a design check for a horizontal curve (flat terrain) for an intermediate speed highway in rural Victoria. Given the design speed is 80kmph and super elevation is 7%. The provided horizontal curve radius was equal to the 700 m. Would the designed curve radius will be sufficient to attain the super elevation? If not, what would be the correct radius for horizontal curve? When suggesting a new radius please check and make sure that the provide super elevation is higher (>7%) than required.

Question 2 The maximum speed of a vehicle on a 4º curve having arc length 30 m is limited to 60 kmph. Calculate the psychological widening required on the curve.