Structural Analysis, 5th Edition
5th Edition
ISBN: 9788131520444
Author: Aslam Kassimali
Publisher: Cengage Learning
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Question
Chapter 7, Problem 65P
To determine
Find the vertical deflection at joint C of the frame using Castigliano’s second theorem.
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An observer standing beside a one-lane road counted in 5 minutes 20 cars traveling at 30 mph, 30 cars
traveling at 50 mph and 10 cars traveling at 60 mph.
(a) What is the space and time-mean speeds of the observed cars?
(b) What is the average headway of the cars? [
2.20 A driver is traveling at 90 mi/h down a 3%
grade on good, wet pavement. An accident
investigation team noted that braking skid marks
started 410 ft before a parked car was hit at an
estimated 45 mi/h. Ignoring air resistance, and using
theoretical stopping distance, what was the braking
efficiency of the car?
5.2 Assume that you are an observer standing at a
point along a three-lane roadway. All vehicles in lane
1 are traveling at 30 mi/h, all vehicles in lane 2 are
traveling at 45 mi/h, and all vehicles in lane 3 are
traveling at 60 mi/h. There is also a constant spacing
of 0.5 mile between vehicles. If you collect spot speed
data for all vehicles as they cross your observation
point, for 30 minutes, what will be the time-mean
speed and space-mean speed for this traffic stream?
Chapter 7 Solutions
Structural Analysis, 5th Edition
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