![MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)](https://s3.amazonaws.com/compass-isbn-assets/textbook_empty_images/large_textbook_empty.svg)
MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305581159
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
expand_more
expand_more
format_list_bulleted
Question
Chapter 15, Problem 21P
To determine
(a)
Minimum length of crest vertical curves
To determine
(b)
The minimum length of sag vertical curve.
To determine
(c)
Maximum super elevation.
To determine
(d)
Maximum degree of curve.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Design a horizontal curve for the highway by computing the radius and stationing
of PC and PT using the following data,
# of lanes = 2
Width per lane = 12 ft
Pl is at station 120+20
Design speed is 60 mi/h
Superelevation = 0.06 ft/ft
Central angle of the curve = 37 degrees
Show work and answer question 7 only
(b)
For the safe road design and smooth traffic flow, combination of transition and
circular curve will be constructed to combine two tangent line that have bearing of
N 70° E (entry tangent) and S 80° E (exit tangent) respectively. With the aid of
sketch, design the minimum length of transition curve and circular curve that has
the following characteristics
• Design speed = 110 km/hr
coefficient of side friction, f= 0.15
Superelevation, e = 5 %
• Radial acceleration, c = 0.9 m/s³
Chapter 15 Solutions
MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
Knowledge Booster
Similar questions
- only do question 4arrow_forwardIt is desired to replace the compound curve with a simple curve that will be tangent to the three tangent lines, and at the same time forming a reversed curve with parallel tangents and equal radii, solve for the ff: a. Common radius of the reversed curve Distance between the parallel tangents c. Stationing of the new PT b.arrow_forward5. (a) Using a well annotated diagram, present the five point permissible approximations or assumptions used for the computations related to vertical curve design and setting out. (b) A 100 metre vertical curve is to connect a downgrade of 1.75% to an upgrade of 1.25%. If the level of the intersection point of the two grades is 150m, calculate the curve levels at 20m intervals, showing the second difference check on the computation.arrow_forward
- The degree of curve of a sample curve is 5°. Compute the desired super elevation required if the design speed of a car passing thru the curve is 80kph and the skid resistance is equal to 0.12.arrow_forwardThe 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 g, 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. Note: use the Stopping sight distance to solve thiaarrow_forwardExample: A grade g1 of -2% intersects g2 of +1.6% at a vertex whose station and elevation are 87+00 and 743.24, respectively. A 400' vertical curve is to be extended back from the vertex, and a 600’ vertical curve forward to closely fit ground conditions. Compute and tabulate the curve for stakeout at full stations.arrow_forward
- Here X=6arrow_forwardA compound curve has the following data: intersection angle of the first curve I sub 1 = 28 degrees, intersection angle of the second curve I sub 2 = 31 degrees, D sub 1 = 3 degrees, and D sub 2 = 4 degrees. Find the stationing of P.C.C. Use P.I. equals 30 + 120.5.arrow_forwardplease solve the question in the picture, please post pictures of your work and do not type it.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning