Elementary Surveying, Global Edition
14th Edition
ISBN: 9781292060491
Author: Charles D. Ghilani, Paul Wolf
Publisher: PEARSON
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Chapter 13, Problem 13.5P
To determine
The duration for the GPS satellite signal to reach a receiver on earth.
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A traffic signal has a 60-second cycle length (Red time + Green time). For the travel direction
of interest, the red and green times are 30 seconds each, the arrival rate is constant at 20
[veh/min] and the saturation flow (i.e., the departure rate) is 1 [veh/sec].
a. Calculate the average delay (for all vehicles) for the travel direction of interest.
b. Assume a work zone on the street downstream of the intersection so that only 25 [veh/min]
(in the direction of interest) can pass. Calculate the average delay caused by the work zone
to a vehicle leaving the intersection. Assume that the queue at the work zone never backs-
up into the intersection.
c. Discuss qualitatively the implications of queue spillback from the work zone on the delay
of the system.
Traffic Direction
(a)
Traffic Direction
(b)
Attached pics is a sample problem, can you compute it for me, I just want to compare my answer. Thank you.
Problem 2: The Douglas fir beam below supports uniform live (WL) and dead loads (WD) as shown
below. Assume the total distributed load is 700 lb/ft.
WD=300#/PT. W₁ = 400#
W₁ = 400#/FT-
J J J J I J J J
L=161
a) Assuming an alllowable deflection of L/360, compute the magnitude of the allowable deflection.
b) Using an 8"x12" timber beam (see Table A1-b on page 567 of your text for properties) compute
the actual deflection. Assume E = 1.6 x 100 psi.
c) Based on your answers for parts a and b, determine if an 8"x12" timber beam is safe for this
application
Chapter 13 Solutions
Elementary Surveying, Global Edition
Ch. 13 - Prob. 13.1PCh. 13 - Prob. 13.2PCh. 13 - Prob. 13.3PCh. 13 - Prob. 13.4PCh. 13 - Prob. 13.5PCh. 13 - Prob. 13.6PCh. 13 - Prob. 13.7PCh. 13 - Prob. 13.8PCh. 13 - Prob. 13.9PCh. 13 - Prob. 13.10P
Ch. 13 - Prob. 13.11PCh. 13 - Prob. 13.12PCh. 13 - Prob. 13.13PCh. 13 - Prob. 13.14PCh. 13 - Prob. 13.15PCh. 13 - Prob. 13.16PCh. 13 - Prob. 13.17PCh. 13 - Prob. 13.18PCh. 13 - Prob. 13.19PCh. 13 - Prob. 13.20PCh. 13 - Prob. 13.21PCh. 13 - Prob. 13.22PCh. 13 - Prob. 13.23PCh. 13 - Prob. 13.24PCh. 13 - Prob. 13.25PCh. 13 - Prob. 13.26PCh. 13 - Prob. 13.27PCh. 13 - Prob. 13.28PCh. 13 - Prob. 13.29PCh. 13 - Prob. 13.30PCh. 13 - Prob. 13.31PCh. 13 - Prob. 13.32PCh. 13 - Prob. 13.33PCh. 13 - Prob. 13.34P
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