QUESTION 1: VERTICAL AND HORIZONTAL ALIGNMENT 1.1 The rate of vertical curvature K is used in vertical curves to determi

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Question 1 Vertical And Horizontal Alignment 1 1 The Rate Of Vertical Curvature K Is Used In Vertical Curves To Determi 1 (60.12 KiB) Viewed 22 times

QUESTION 1: VERTICAL AND HORIZONTAL ALIGNMENT 1.1 The rate of vertical curvature K is used in vertical curves to determine sight distance viability on a crest curve. To calculate vertical curve elevations, we therefore utilize this value defined as K Now calculate the value of A for curve located on a road that has an initial downward gradient of 2% followed by another downward gradient of 4.5%. (2) 1.2 Design the center line levels required for a road which has a Vertical curve. Indicate the centerline road levels in a table form and show the VC drawing and descriptions of the position of the VC next to the SV's. The data available is as follows: • The road starts at SV 0 and ends at SV180 and has SV intervals of 20m. • The Pl of the road is located at SV 100 and the length of the VC is 120m • The road starts at a level of 54.565 with an upward gradient of +2.5% and ends at a road level of 59.865. (10) (2) 1.3 Why should Horizontal curves be improved by the application of transitions curves. 1.4 Explain what happens to the crossfall of the road when the initial crossfall is a camber and the road turns to the right-hand side along a curve. (Also make a sketch) (4) QUESTION 2: PARKING [18] (1) 2.1 What is the known pre-measurement area normally allowed for a parking space? 2.2 A local authority has identified a section of land where a medical clinic will be constructed. There will be 25 beds available. Make sure there is also allowance for handicapped parking when you 1| Page