Knowing that the average normal stress in member EF of the Pratt bridge truss shown must not exceed 8.99 ksi for the given loading, determine the cross-sectional area (in są. in) of this member that will yield the most economical and safe design if h = 11.7 ft and P = 92.21 kips. Round off the answer to five decimal places. %3D 010.png ... В D F Hy C E G +9 ft--9 ft→- P P P
Knowing that the average normal stress in member EF of the Pratt bridge truss shown must not exceed 8.99 ksi for the given loading, determine the cross-sectional area (in są. in) of this member that will yield the most economical and safe design if h = 11.7 ft and P = 92.21 kips. Round off the answer to five decimal places. %3D 010.png ... В D F Hy C E G +9 ft--9 ft→- P P P
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
![Knowing that the average normal stress in member EF of the Pratt bridge truss shown must not exceed 8.99 ksi for the given
loading, determine the cross-sectional area (in sq. in) of this member that will yield the most economical and safe design if h =
11.7 ft and P = 92.21 kips. Round off the answer to five decimal places.
010.png
В
D
F
h
H
C
E
G
-on--
9 ft→9 ft→9 ft→-9 ft-
P
P](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faec0975a-f953-4378-b33d-f0b592769731%2F93a3f9a1-2fab-4064-8ba7-47942ef367ae%2F6xjufaj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Knowing that the average normal stress in member EF of the Pratt bridge truss shown must not exceed 8.99 ksi for the given
loading, determine the cross-sectional area (in sq. in) of this member that will yield the most economical and safe design if h =
11.7 ft and P = 92.21 kips. Round off the answer to five decimal places.
010.png
В
D
F
h
H
C
E
G
-on--
9 ft→9 ft→9 ft→-9 ft-
P
P
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