A horizontal curve on a four-lane (two lane in each direction) highway (11-ft lanes) has PC at station 124+30 and PT at station 130 + 15. The central angle is 40 degrees, the superelevation is 0.12, and 23.5 ft is cleared (for sight distance) from the inside edge of the innermost lane. Determine a maximum safe speed (assuming current design standards) to the nearest 5 mi/h.

A horizontal curve on a four-lane (two lane in each direction) highway (11-ft lanes) has PC at station 124+30 and PT at station 130 + 15. The central angle is 40 degrees, the superelevation is 0.12, and 23.5 ft is cleared (for sight distance) from the inside edge of the innermost lane. Determine a maximum safe speed (assuming current design standards) to the nearest 5 mi/h.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A vertical curve is required for a 1st class 3x3 highway section with entering and exiting grades of…

A: The entering and exiting grades of + 5.10% and -6.40%, respectively.The point of intersection of the…

Q: A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the…

Q: A horizontal curve has a radius of 650 ft, measured to the right edge of the rightmost lane. The…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A vertical curve is needed to join to tangents; G₁=0% and G₂=-5%. Assuming a level grade (0%) for…

A: Vertical curves are formed when two different gradients meet at a point. If convexity of curve is…

Q: A horizontal curve is being designed for a new four-lane roadway with 11-ft lanes. The PT is located…

Q: A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the…

Q: A vertical curve is needed to join to tangents; G₁=5% and G2=2%. Assuming the worst case scenario…

Q: A vertical curve is located along the north sound bound direction at an intersection as shown below…

A: In order to check for safety of the curve in terms of stopping sight distance we need to calculate…

Q: A vertical curve is required for a 1st class 3x3 highway section with entering and exiting grades of…

A: Given Data:Design speed Perception-reaction time Friction factor Entering grade: Exiting grade:…

Q: Determine the minimum length of a vertical curve between a -1.78% grade and a -7.8% grade for a road…

A: Answer we are given Grade G1 = -1.78% Grade G2 = -7.8% Design speed V = 110 Km/hr reaction time Rt…

Q: A 490 ft equal-tangent sag curve is currently designed for 50 mph. A CE 321 student thinks that…

Q: A horizontal curve on a two-lane highway is designed with a 610-m radius, 3.5-m lanes, and 80 kph…

Q: A vertical curve is going to be designed to join a 0% grade with a +5% grade at a section of a…

A: G1 = 0% = 0 G2 = 5% = 0.05

Q: A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the…

Q: A vertical curve is needed to join to tangents; G1=0% and G2= -5%. Assuming a level grade (0%) for…

A: Vertical curves are formed when two different gradients meet at a point. If convexity of curve is…

Question

A horizontal curve on a four-lane (two lane in each direction) highway (11-ft lanes) has PC at station 124+30 and PT at station 130 + 15. The central angle is 40
degrees, the superelevation is 0.12, and 23.5 ft is cleared (for sight distance) from the inside edge of the innermost lane. Determine a maximum safe speed
(assuming current design standards) to the nearest 5 mi/h.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A simple horizontal curve has 35 degrees of curvature and subtends an angle of 110 degrees. If the PC is at station 3 + 65.00 ft, what is the last deflection angle (degrees) (i.e. the angle subtended by the roadway between the last full station and the PT)?
A horizontal curve has 2 lanes per direction. The radius, measured to the center marking that separates the two opposing directions is 700 ft. The lane width is 14 ft. The wall of the tunnel is 10 ft from the right edge of the right travel lane. Calculate S. If vehicle A traveling at 50 mph on the right lane has just passed the PC, and vehicle B is stopped in the middle of the right lane at PT, can vehicle A stop before colliding with vehicle B? Explain your answer.
An equal-tangent vertical curve connects a +3.2 % and a -1.1 % grade. The PVI is at station 100+20 and elevation 950 ft and the PVT is at station 105+20. Answer the following 5 questions Question 3 to Question 7. The station of the PVC is at: sta 93+20 sta 95+20 sta 97+20 sta 99+20 sta 105+20
Design a vertical curve (i.e., Determine length of the curve as well as station and elevation of the vertical curve's PVC and PVT) with the given PVI (station and elevation given the figure below) to go through a future intersection location at the point at which the vertical curve is flat. Report the vertical curve's design speed to the nearest 5 miles per hour. PVC Future Intersection Station = 100+00 G1 = -2.6% PVT PVI G2 = 1.0% Station = 99+00 Elevation = 228 ft %3|
QUESTION 3 A vertical curve is needed to join to tangents; G₁-5% and G₂-2%. Assuming the worst case scenario for braking, and the AASHTO recommended values for deceleration and perception-reaction time, calculate the minimum length of curve (ft) needed to satisfy the safety criteria. The design speed is 50 mph.
A horizontal curve is being designed to connect two tangents that intersect on a rural collector road with a specified design volume of 2500 veh/day (i.c. design speed 60 mph). It is expected that, because of right-of-way restriction, a large billboard will be placed at a distance of 50 ft from the centerline of the inside lane. If the terrain can be described as level and only a minimal amount of snow is expected on the road, determine the minimum radius of curve. Assume maximum superelevation rate (e) of 0.1 and fs=0.12. Ans: 1090 ft
A+1 percent grade intersects with a-2 percent grade at station (535+ 24.25) at an elevation of 300 t. (a) if the design speed is 65 mi/h, determine the minimum length (in t) of vertical curve using the rate of vertical curvature. (Assume the stopping sight distance is less than the length of the curve.) it (b) Using the length found in part (a), find the stations and elevations (in R) of the BVC and EVC and the elevation (in t) of each 100 t station. (In the table below, the first row corresponds to the BVC and the last row corresponds to the EVC. Round your elevations to at least one decimal place.) Station Elevation (t) 533 + 00 534 + 00 535 + 00 536 + 00 537 + 00 538 + 00 (c) Using the length found in part (a), find the station and elevation (in t) of the highpoint. station nlevation
A vertical curve is needed to join to tangents; G1=1% and G2=4%. Assuming a level grade (0%) for braking, and the AASHTO recommended values for deceleration and perception-reaction time, calculate the minimum length of curve (ft) needed to satisfy the safety criteria. The design speed is 60 mph.
A section of a two-lane highway (one lane in each direction) (12-ft lanes) is designed for 55 mi/h. At one point a vertical curve connects a -2.9% and +1.8% grade. The PVT of this curve is at station 38 + 50. It is known that a horizontal curve starts (has PC) 247 ft before the vertical curve's PVC. If the superelevation of the horizontal curve is 0.08 and the central angle is 39 degrees, what is the station of the PT (express station in the format 0.00, for example, station 10+50 must be expressed as 10.5)?
A horizontal curve is to be designed to connect two tangents on a rural principal arterial with a design speed of 110 km/h. The station of the BC is 545+13.65. It is expected that an existing building will be located at a distance of 15 m from the centerline of the inside lane. Determine the minimum radius that will satisfy the sight distance and superelevation requirements.
A vertical curve is needed to join to tangents; G₁=2% and G2-5%. Assuming the worst case scenario for braking, and the AASHTO recommended values for deceleration and perception-reaction time, calculate the minimum length of curve (ft) needed to satisfy the comfort criteria. The design speed is 50 mph. Response Feedback: G2-G₁ is positive, therefore a sag curve. A=3 Lmin-AV²146.5