Engineering Fundamentals
6th Edition
ISBN: 9780357112144
Author: Saeed Moaveni
Publisher: MISC PUBS
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Chapter 15, Problem 27P
To determine
Find the equation that best fits the following data points and compare the actual and predicted
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A semicircular 40 ft diameter− − tunnel is to be built under a150 ft deep− − , 800 ft long− − lake,
as shown below.
a) Determine the horizontal, vertical, and resulting hydrostatic forces acting on this tunnel.
(Answer: 8 8 8
1.398 10 , 2.596 10 , 2.64 10H y netF lbf F lbf F lbf= × = × = × )
b) Calculate the hydrostatic force on the bottom of the lake if the tunnel was not there, and
compare it with the total (resulting) hydrostatic force that you calculated in part (a).
(Answer: 8
2.995 10VF lbf= × )
c) As the design engineer of this tunnel would you take the hydrostatic force on the bottom
of the lake as a rough estimate of the resulting hydrostatic force acting on this tunnel.
Discuss your decision.
3.2 Consi
parabolic equation (Eq. 3.1)
3.3 Again consider Example 3.4. Does this curve
provide sufficient stopping sight distance for a speed of
60 mi/h?
-tangent
grade with a -1% final
mi/h. The station of the
1203 ft. What is the elev
3.4 An equal-tangent crest vertical curve is designed
for 70 mi/h. The high point is at elevation 1011.4 ft. The
initial grade is +2% and the final grade is -1%. What is
the elevation of the PVT?
+00?
3.10 An equal-tangent w
2012 (to 2011 AASHTO
of 70 mi/h to connec
-2.1%. The curve is
design speed in th
technology has adv
design deceleration
value used to dev
percentage of ol
design reaction
vehicles have b
height is assun
roadway obje
3.5 An equal-tangent crest curve has been designed for
70 mi/h to connect a +2% initial grade and a -1% final
grade for a new vehicle that has a 3 ft driver's eye
height; the curve was designed to avoid an object that is
1 ft high. Standard practical stopping distance design
was used but, unlike current design standards,…
Chapter 15 Solutions
Engineering Fundamentals
Ch. 15.1 - Prob. 1BYGCh. 15.1 - Prob. 2BYGCh. 15.1 - Prob. 3BYGCh. 15.1 - Prob. 4BYGCh. 15.1 - Prob. 5BYGCh. 15.2 - Prob. 1BYGCh. 15.2 - Prob. 2BYGCh. 15.2 - Prob. 3BYGCh. 15.2 - What is an M-file?Ch. 15.5 - Prob. 1BYG
Ch. 15.5 - Prob. 2BYGCh. 15.5 - Prob. 3BYGCh. 15.5 - Prob. 4BYGCh. 15.5 - Prob. 5BYGCh. 15 - Prob. 1PCh. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Prob. 5PCh. 15 - Prob. 6PCh. 15 - Prob. 7PCh. 15 - Prob. 8PCh. 15 - Prob. 9PCh. 15 - Prob. 10PCh. 15 - Prob. 11PCh. 15 - Prob. 12PCh. 15 - Prob. 13PCh. 15 - Prob. 14PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - Prob. 24PCh. 15 - Prob. 25PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - Prob. 29PCh. 15 - Prob. 30PCh. 15 - Prob. 31PCh. 15 - The Body Mass Index (BMI) is a way of determining...Ch. 15 - Prob. 33PCh. 15 - Prob. 34PCh. 15 - Prob. 35PCh. 15 - Prob. 36PCh. 15 - Prob. 37PCh. 15 - Prob. 38PCh. 15 - Prob. 39PCh. 15 - Prob. 40P
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