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28 pedestrians per cycle (both directions combined) use a crosswalk to cross a 72-ft wide street. The width of the crosswalk is 11 ft. If the walking speed is 3.5 ft/s, how much τi,ps should be allocated so that the pedestrians can safely cross? Group of answer choices 31.0 sec 21.2 sec 56 sec 52.8 sec

28 pedestrians per cycle (both directions combined) use a crosswalk to cross a 72-ft wide street. The width of the crosswalk is 11 ft. If the walking speed is 3.5 ft/s, how much τi,ps should be allocated so that the pedestrians can safely cross? Group of answer choices 31.0 sec 21.2 sec 56 sec 52.8 sec

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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28 pedestrians per cycle (both directions combined) use a crosswalk to cross a 72-ft wide street. The width of the crosswalk is 11 ft. If the walking speed is 3.5 ft/s, how much τi,ps should be allocated so that the pedestrians can safely cross?

Group of answer choices
31.0 sec
21.2 sec
56 sec
52.8 sec
Expert Solution
Step 1 Introduction

Given:

  1. Number of pedestrians using crosswalk in given interval =28.
  2. Effective width of crosswalk =11ft.
  3. Length of crosswalk=72ft.
  4. Walking Speed of Pedestrian =3.5ft/sec.
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