Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
Post-tensioned AASHTO Type III girders are to be used to support a deck with unsupported span equal to 90 feet. One level of Grade 270, 10 x 0.6" Ø 7-wire strand are used to tension the girders. The girder is simply supported at both ends. The anchors are located 2" from the neutral axis at the supports while the eccentricity is measured at 14" at the midspan. Use maximum values for ranges (table values). The tendons are encased in flexible metal sheathing. Assume and loadings are placed immediately after stressing. Determine the stresses at the top and bottom of the beam, including the stress at the level of steel after three years. Given the following parameters: F'c = 5000 psi Fy = 240 ksi (Bonded, Stress-relieved) Fu = 270 ksi = Es 29,000 ksi Ec = 4,030 psi Fj = 235 ksi A = 1x0.6" 07-W.S. = 0.217 in² Yc = 140 lbs/ft³ ΔΑ = 3/8" RH = 33% Superimposed Service Load = 10 kips/ft (excluding self-weight)

Post-tensioned AASHTO Type III girders are to be used to support a deck with unsupported span equal to 90 feet. One level of Grade 270, 10 x 0.6" Ø 7-wire strand are used to tension the girders. The girder is simply supported at both ends. The anchors are located 2" from the neutral axis at the supports while the eccentricity is measured at 14" at the midspan. Use maximum values for ranges (table values). The tendons are encased in flexible metal sheathing. Assume and loadings are placed immediately after stressing. Determine the stresses at the top and bottom of the beam, including the stress at the level of steel after three years. Given the following parameters: F'c = 5000 psi Fy = 240 ksi (Bonded, Stress-relieved) Fu = 270 ksi = Es 29,000 ksi Ec = 4,030 psi Fj = 235 ksi A = 1x0.6" 07-W.S. = 0.217 in² Yc = 140 lbs/ft³ ΔΑ = 3/8" RH = 33% Superimposed Service Load = 10 kips/ft (excluding self-weight)

Steel Design (Activate Learning with these NEW titles from Engineering!)
Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN:9781337094740
Author:Segui, William T.
Publisher:Segui, William T.
Chapter5: Beams
Section: Chapter Questions
Problem 5.11.9P
See similar textbooks
icon
Related questions
Question
Post-tensioned AASHTO Type III girders are to be used to support a deck with unsupported span equal to 90 feet. One level of Grade 270, 10 x 0.6" Ø 7-wire strand are used to tension the girders. The girder is simply supported at both ends. The anchors are located 2" from the neutral axis at the supports while the eccentricity is measured at 14" at the midspan. Use maximum values for ranges (table values). The tendons are encased in flexible metal sheathing. Assume and loadings are placed immediately after stressing. Determine the stresses at the top and bottom of the beam, including the stress at the level of steel after three years. Given the following parameters: F'c = 5000 psi Fy = 240 ksi (Bonded, Stress-relieved) Fu = 270 ksi = Es 29,000 ksi Ec = 4,030 psi Fj = 235 ksi A = 1x0.6" 07-W.S. = 0.217 in² Yc = 140 lbs/ft³ ΔΑ = 3/8" RH = 33% Superimposed Service Load = 10 kips/ft (excluding self-weight)
Transcribed Image Text:Post-tensioned AASHTO Type III girders are to be used to support a deck with unsupported span equal to 90 feet. One level of Grade 270, 10 x 0.6" Ø 7-wire strand are used to tension the girders. The girder is simply supported at both ends. The anchors are located 2" from the neutral axis at the supports while the eccentricity is measured at 14" at the midspan. Use maximum values for ranges (table values). The tendons are encased in flexible metal sheathing. Assume and loadings are placed immediately after stressing. Determine the stresses at the top and bottom of the beam, including the stress at the level of steel after three years. Given the following parameters: F'c = 5000 psi Fy = 240 ksi (Bonded, Stress-relieved) Fu = 270 ksi = Es 29,000 ksi Ec = 4,030 psi Fj = 235 ksi A = 1x0.6" 07-W.S. = 0.217 in² Yc = 140 lbs/ft³ ΔΑ = 3/8" RH = 33% Superimposed Service Load = 10 kips/ft (excluding self-weight)
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
Steel Design (Activate Learning with these NEW ti…
Steel Design (Activate Learning with these NEW ti…
Civil Engineering
ISBN:
9781337094740
Author:
Segui, William T.
Publisher:
Cengage Learning
Architectural Drafting and Design (MindTap Course…
Architectural Drafting and Design (MindTap Course…
Civil Engineering
ISBN:
9781285165738
Author:
Alan Jefferis, David A. Madsen, David P. Madsen
Publisher:
Cengage Learning
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
SEE MORE TEXTBOOKS