Transportation Systems 1
1. A rural arterial located in a mountainous terrain is designed as a two way two-lane highway to carry a design hour volume of 1000 veh/hr. Determine the following:
(a) a suitable design speed
(b) lane and usable shoulder widths
(c) min. of radius of horizontal curve
(d) max. desirable grade.
(e) min. length of crest curve for the max grade
(f) min. length of sag curve for the max grade
Draw the cross section if a mixed cut/fill area with all necessary elements.
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9:381 LTE Problem 1 A crest vertical curve is to be designed to join a +2% grade with a-2% at a s...
9:381 LTE Problem 1 A crest vertical curve is to be designed to join a +2% grade with a-2% at a section of a two-lane highway. Determine the minimum length of the curve if the design speed of the highway is 60 mph and SL. Assume that a-9.34 ftsec' and that the perception-reaction time is 2.5 sec. Problem2 A crest vertical curve is to be designed to join a +3% grade with a-2% grade at a section of a two-lane...
a) a 200 m vertical crest curve is designed to connect a +4.5% tangent with a...
a) a 200 m vertical crest curve is designed to connect a +4.5% tangent with a -2% tangent. What should the design speed be to provide ample stopping sight distance? SSD t Pra) [10 marks) b) A 300 m sag parabolic vertical curve has a PVC at station 2+600.000 and elevation 320.000 m. the initial grade is -4.0% and the final grade is +1.0%. Determine the stationing and elevation of PVI, PVT and the lowest point on the curve. Also...
A 5 degree curve (measured at the centerline of the inside lane) is being designed for...
A 5 degree curve (measured at the centerline of the inside lane) is being designed for a highway with a design speed of 60 mph. What is the closest any roadside object may be placed to the centerline of the inside lane of the roadway while maintaining adequate stopping sight distance? Assume lane widths are 12 feet. 3) A 520-ft long equal tangent crest vertical curve connects tangents that intersect at station 340+00 and elevation 1325 ft. The initial grade...
1)A horizontal curve connects two tangents that deflect at an angle of 45o on a two...
1)A horizontal curve connects two tangents that deflect at an angle of 45o on a two lane rural collector highway. The point of intersection of the tangents is located at station (658 + 16.13). If the design speed of the highway is 70 km/h and max. allowable superelevation rate is used. Determine the length of curve, degree of curve, point of curvature, point of tangency, and the ordinates. 2)For the information given in question 1above, and if the highway enters...
Q1. A +2 percent grade on an arterial highway intersects with a -1 percent grade at...
Q1. A +2 percent grade on an arterial highway intersects with a -1 percent grade at station (5+357.28) at an elevation of 90m. If the design speed of the highway is 100 Km/h, determine the stations and elevations of the BVC and EVC, the elevation of each 30-m station, and the higlh point Q2. Determine the minimum length of a vertical curve if the grades are +4% and-200. Design speed is 120 km/hr. State assumptions used in solving this problem....
highway geometric Q1) A. What are the Principal elements of the highway cross section? Draw the...
highway geometric
Q1) A. What are the Principal elements of the highway cross section? Draw the typical cross sections for a two-lane highway. (5 Points) B. Briefly discuss the various indirect design factors to be considered for geometric design of highway. (10 Points) Q2) A. What is Road Alignment? Briefly describe the requirements of an ideal alignment. (5 Points) B. An equal-tangent sag vertical curve has the initial grade is -3.2% and the final grade is +1.8%, PVI at 30+30...
6:47 1 4 Search <Back Hw#3-2019.doc 15- 10. A horizontal curve is designed for a two-lane...
6:47 1 4 Search <Back Hw#3-2019.doc 15- 10. A horizontal curve is designed for a two-lane road in mountainous terrain. The following data are known. Intersection angle: 40 degrees Tangent length: 436.76 feet Station of Pl: 2700+10.65 fs- 0.12 e- 0.08 Determine the following. (a) Design speed (b) Station of the PC (c) Station of the PT (d) Deflection angle and chord length to the first even 100 ft station. 15-11. A proposed highway has two tangents of bearings N...
Problem 1 (15vpts) A proposed highway has two tangents of bearings N 75° 54' 36" E...
Problem 1 (15vpts) A proposed highway has two tangents of bearings N 75° 54' 36" E and N 53° 22' 30" W. The highway design engineer, attempting to obtain the best fit for the simple circular curve to join these tangents, decides that the external ordinate is to be 78.00 ft. The Pl is at station 65+43.21. Determine: (a) The external angle of the curve (A) (b) The radius of the curve (d) The station of the PC (f) The...
Problem 4. A section of a two-lane highway has 12-ft lanes and a design speed of...
Problem 4. A section of a two-lane highway has 12-ft lanes and a design speed of 75 mi/h. The section contains a vertical curve and a horizontal curve. The vertical curve connects a-2.5% grade and a +1.5% grade. The PVT of this vertical curve is at station 36 + 50. The PC of the horizontal curve is located 294 ft before the PVC of the vertical curve. The horizontal curve has superelevation of 8% and central angle of 38 degrees....
9:381 LTE Problem 1 A crest vertical curve is to be designed to join a +2% grade with a-2% at a section of a two-lane highway. Determine the minimum length of the curve if the design speed of the highway is 60 mph and SL. Assume that a-9.34 ftsec' and that the perception-reaction time is 2.5 sec. Problem2 A crest vertical curve is to be designed to join a +3% grade with a-2% grade at a section of a two-lane...
a) a 200 m vertical crest curve is designed to connect a +4.5% tangent with a -2% tangent. What should the design speed be to provide ample stopping sight distance? SSD t Pra) [10 marks) b) A 300 m sag parabolic vertical curve has a PVC at station 2+600.000 and elevation 320.000 m. the initial grade is -4.0% and the final grade is +1.0%. Determine the stationing and elevation of PVI, PVT and the lowest point on the curve. Also...
A 5 degree curve (measured at the centerline of the inside lane) is being designed for a highway with a design speed of 60 mph. What is the closest any roadside object may be placed to the centerline of the inside lane of the roadway while maintaining adequate stopping sight distance? Assume lane widths are 12 feet. 3) A 520-ft long equal tangent crest vertical curve connects tangents that intersect at station 340+00 and elevation 1325 ft. The initial grade...
Q1. A +2 percent grade on an arterial highway intersects with a -1 percent grade at station (5+357.28) at an elevation of 90m. If the design speed of the highway is 100 Km/h, determine the stations and elevations of the BVC and EVC, the elevation of each 30-m station, and the higlh point Q2. Determine the minimum length of a vertical curve if the grades are +4% and-200. Design speed is 120 km/hr. State assumptions used in solving this problem....
highway geometric
Q1) A. What are the Principal elements of the highway cross section? Draw the typical cross sections for a two-lane highway. (5 Points) B. Briefly discuss the various indirect design factors to be considered for geometric design of highway. (10 Points) Q2) A. What is Road Alignment? Briefly describe the requirements of an ideal alignment. (5 Points) B. An equal-tangent sag vertical curve has the initial grade is -3.2% and the final grade is +1.8%, PVI at 30+30...
6:47 1 4 Search <Back Hw#3-2019.doc 15- 10. A horizontal curve is designed for a two-lane road in mountainous terrain. The following data are known. Intersection angle: 40 degrees Tangent length: 436.76 feet Station of Pl: 2700+10.65 fs- 0.12 e- 0.08 Determine the following. (a) Design speed (b) Station of the PC (c) Station of the PT (d) Deflection angle and chord length to the first even 100 ft station. 15-11. A proposed highway has two tangents of bearings N...
Problem 1 (15vpts) A proposed highway has two tangents of bearings N 75° 54' 36" E and N 53° 22' 30" W. The highway design engineer, attempting to obtain the best fit for the simple circular curve to join these tangents, decides that the external ordinate is to be 78.00 ft. The Pl is at station 65+43.21. Determine: (a) The external angle of the curve (A) (b) The radius of the curve (d) The station of the PC (f) The...
Problem 4. A section of a two-lane highway has 12-ft lanes and a design speed of 75 mi/h. The section contains a vertical curve and a horizontal curve. The vertical curve connects a-2.5% grade and a +1.5% grade. The PVT of this vertical curve is at station 36 + 50. The PC of the horizontal curve is located 294 ft before the PVC of the vertical curve. The horizontal curve has superelevation of 8% and central angle of 38 degrees....
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