A car is traveling up a 1.25% grade of a crest curve with a design speed of 65 mph. The descending grade is -2.75%. What is the required length of curve for minimum proper stopping sight distance?
A car is traveling up a 1.25% grade of a crest curve with a design speed of 65 mph. The descending grade is -2.75%. What is the required length of curve for minimum proper stopping sight distance?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:A car is traveling up a 1.25% grade of a crest
curve with a design speed of 65 mph. The
descending grade is -2.75%. What is the
required length of curve for minimum proper
stopping sight distance?
AASHTO Minimum Stopping Sight Distances on Level Roadways (based on braking distance)
stopping sight distance
design speed
(mph)
braking distance
on level
(ft)
design
(ft)
(m)
brake reaction distance
calculated
(km/h)
(ft)
(m)
(m)
(ft)
(m)
(20)
(30)
(40)
(50)
(60)
(70)
(80)
(90)
(100)
(110)
(120)
(130)
(13.9)
(20.9)
(27.8)
(34.8)
(41.7)
(48.7)
(55.6)
(62.6)
(69.5)
(76.5)
(83.4)
(90.4)
(4.6)
(10.3)
(18.4)
(28.7)
(41.3)
(56.2)
(73.4)
(92.9)
(114.7)
(138.8)
(165.2)
(193.8)
(18.5)
(31.2)
(46.2)
(63.5)
(83.0)
(104.9)
(129.0)
(155.5)
(184.2)
(215.3)
(248.6)
(284.2)
(20)
(35)
(50)
(65)
(85)
(105)
(130)
(160)
(185)
(220)
(250)
(285)
15
55.1
21.6
76.7
80
20
73.5
38.4
111.9
115
25
91.9
60.0
151.9
155
30
110.3
86.4
196.7
200
35
128.6
117.6
246.2
250
40
147.0
153.6
300.6
305
359.8
423.8
45
165.4
194.4
360
50
183.8
240.0
425
55
202.1
290.3
492.4
495
60
220.5
345.5
566.0
570
65
238.9
405.5
644.4
645
470.3
539.9
70
257.3
727.6
730
75
275.6
815.5
820
80
294.0
614.3
908.3
910
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 1 images
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.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning