Question 2 2.1 The actual grade length on a vertical alignment of a rural road is...
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Question 2 2.1 The actual grade length on a vertical alignment of a rural road is 226 m and the uphill grade is 4.5%. The design speed on the curve is 80 km/h. Determine if a climbing lane is required. (3) 2.2 A sag curve is used along 2-lane, two-way rural road section designed for a maximum safe speed of 80 km/h. The following sketch shows the curve details on the road centre line. G1 = 3.4% Parabola length = 210 m PVI ch 0+905.180 elev = 410 m G2 = 2% 2.2.1 Calculate the chainages and elevations of the beginning of the curve (BVC) and curve end (EVC) points. (8) 2.2.2 Calculate the chainage and elevation of the lowest point on the curve. (4) 2.2.3 What is the highest point on this curve? (2) 2.2.4 Calculate the elevation at chainage 0+820.180 (3) 2.2.5 Verify if the given curve length meets the minimum length vertical curvature requirements. (Hint: use TRH17 guidelines). (3) 2.2.6 Verify if the given curve length meets a minimum required stopping sight distance of 95 m. (5) 2.2.7 Explain if the given curve length meets the other lengths criteria. (2) 3 Question 2 2.1 The actual grade length on a vertical alignment of a rural road is 226 m and the uphill grade is 4.5%. The design speed on the curve is 80 km/h. Determine if a climbing lane is required. (3) 2.2 A sag curve is used along 2-lane, two-way rural road section designed for a maximum safe speed of 80 km/h. The following sketch shows the curve details on the road centre line. G1 = 3.4% Parabola length = 210 m PVI ch 0+905.180 elev = 410 m G2 = 2% 2.2.1 Calculate the chainages and elevations of the beginning of the curve (BVC) and curve end (EVC) points. (8) 2.2.2 Calculate the chainage and elevation of the lowest point on the curve. (4) 2.2.3 What is the highest point on this curve? (2) 2.2.4 Calculate the elevation at chainage 0+820.180 (3) 2.2.5 Verify if the given curve length meets the minimum length vertical curvature requirements. (Hint: use TRH17 guidelines). (3) 2.2.6 Verify if the given curve length meets a minimum required stopping sight distance of 95 m. (5) 2.2.7 Explain if the given curve length meets the other lengths criteria. (2) 3
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2 A climbing lane is not required on the section TRH17 Guidelines A climbing lane is not required for a 45 grade The given curve length of 250 m does ... View the full answer
Related Book For
Fundamentals of Advanced Accounting
ISBN: 978-0077862237
6th edition
Authors: Joe Ben Hoyle, Thomas Schaefer, Timothy Doupnik
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