INSTRUCTOR'S SOLUTIONS MANUAL
TO ACCOMPANY
Structural Analysis
Sixth Edition, SI Edition
ASLAM KASSIMALI
Southern Illinois University—Carbondale
, Contents
Chapter 2............................................................................................................................. 1
Chapter 3........................................................................................................................... 18
Chapter 4........................................................................................................................... 62
Chapter 5......................................................................................................................... 117
Chapter 6......................................................................................................................... 200
Chapter 7......................................................................................................................... 281
Chapter 8......................................................................................................................... 362
Chapter 9......................................................................................................................... 423
Chapter 10....................................................................................................................... 447
Chapter 12....................................................................................................................... 478
Chapter 13....................................................................................................................... 508
Chapter 14....................................................................................................................... 599
Chapter 15....................................................................................................................... 631
Chapter 16....................................................................................................................... 685
Chapter 17....................................................................................................................... 728
Appendix B ...................................................................................................................... 751
Appendix C ...................................................................................................................... 761
Appendix D ...................................................................................................................... 762
, Chapter 3
3.1
(a) The beam is supported by three reactions pr “ 3q, all of which are parallel. Therefore, it
is geometrically unstable.
(b) Internally stable with r “ 3. It is statically determinate.
(c) Internally stable with r “ 5. It is statically indeterminate. i e “ 5 ´ 3 “ 2.
(d) Internally unstable with r “ 6 and ec “ 2. As r ą 3`ec , the frame is statically indeterminate.
i e “ 6 ´ p3 ` 2q “ 1.
18
®
© 2020 Cengage Learning . All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
, 3.2
(a) Internally unstable with r “ 3 and ec “ 1. As r ă 3 ` ec , the beam is statically unstable.
(b) Internally unstable with r “ 4 and ec “ 1. As r “ 3`ec , the beam is statically determinate.
(c) Internally unstable with r “ 4 and ec “ 2. As r ă 3 ` ec , the frame is statically unstable.
(d) Internally unstable, r “ 4 and ec “ 1. As r “ 3 ` ec , the arch is statically determinate.
19
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
TO ACCOMPANY
Structural Analysis
Sixth Edition, SI Edition
ASLAM KASSIMALI
Southern Illinois University—Carbondale
, Contents
Chapter 2............................................................................................................................. 1
Chapter 3........................................................................................................................... 18
Chapter 4........................................................................................................................... 62
Chapter 5......................................................................................................................... 117
Chapter 6......................................................................................................................... 200
Chapter 7......................................................................................................................... 281
Chapter 8......................................................................................................................... 362
Chapter 9......................................................................................................................... 423
Chapter 10....................................................................................................................... 447
Chapter 12....................................................................................................................... 478
Chapter 13....................................................................................................................... 508
Chapter 14....................................................................................................................... 599
Chapter 15....................................................................................................................... 631
Chapter 16....................................................................................................................... 685
Chapter 17....................................................................................................................... 728
Appendix B ...................................................................................................................... 751
Appendix C ...................................................................................................................... 761
Appendix D ...................................................................................................................... 762
, Chapter 3
3.1
(a) The beam is supported by three reactions pr “ 3q, all of which are parallel. Therefore, it
is geometrically unstable.
(b) Internally stable with r “ 3. It is statically determinate.
(c) Internally stable with r “ 5. It is statically indeterminate. i e “ 5 ´ 3 “ 2.
(d) Internally unstable with r “ 6 and ec “ 2. As r ą 3`ec , the frame is statically indeterminate.
i e “ 6 ´ p3 ` 2q “ 1.
18
®
© 2020 Cengage Learning . All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
, 3.2
(a) Internally unstable with r “ 3 and ec “ 1. As r ă 3 ` ec , the beam is statically unstable.
(b) Internally unstable with r “ 4 and ec “ 1. As r “ 3`ec , the beam is statically determinate.
(c) Internally unstable with r “ 4 and ec “ 2. As r ă 3 ` ec , the frame is statically unstable.
(d) Internally unstable, r “ 4 and ec “ 1. As r “ 3 ` ec , the arch is statically determinate.
19
© 2020 Cengage Learning®. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website,
in whole or in part.
