3.1 A 6-lane, divided, highway is planned in a north African country. The cross-sectional dimensions are required as fol

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3 1 A 6 Lane Divided Highway Is Planned In A North African Country The Cross Sectional Dimensions Are Required As Fol 1 (60.04 KiB) Viewed 24 times

3.1 A 6-lane, divided, highway is planned in a north African country. The cross-sectional dimensions are required as follows: depressed median of 9.0 m width, lane width = 3.6 m, inner shoulder width = 0.8 m, and outer shoulder width = 2.0 m. The estimated current ADT = 35000 veh/day, k factor = 0.10, annual traffic growth is 5%, directional distribution factor of 0.5, 3.1.1 Briefly explain how river basin maps, obtained during desk study, are useful in terms of the highway location. (3) 3.1.2 Calculate the widths of the carriageway and travelled way. (4) 3.1.3 Determine the directional design hourly volume after 10 years. (5)