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Chapter 3 Problem 16 Determine the force in each member of the roof truss. State if the members are in tension or compression. Assume there is no external load on joints J, H, and G and only the vertical load of 3k exists on joint I. Scan of Hand Calculations Joint A Joint J Joint B Joint C Joint F Joint G

Chapter 3 Problem 16 - Missouri University of Science and ...classes.mst.edu/civeng217/robot/03.016.pdf · Chapter 3 . Problem 16 . Determine the force in each member of the roof

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Page 1: Chapter 3 Problem 16 - Missouri University of Science and ...classes.mst.edu/civeng217/robot/03.016.pdf · Chapter 3 . Problem 16 . Determine the force in each member of the roof

Chapter 3

Problem 16

Determine the force in each member of the roof truss. State if the members are in tension or compression. Assume there is no external load on joints J, H, and G and only the vertical load of 3k exists on joint I.

Scan of Hand Calculations

Joint A

Joint J

Joint B

Joint C

Joint F

Joint G

Page 2: Chapter 3 Problem 16 - Missouri University of Science and ...classes.mst.edu/civeng217/robot/03.016.pdf · Chapter 3 . Problem 16 . Determine the force in each member of the roof

Model with Applied Loads

Page 3: Chapter 3 Problem 16 - Missouri University of Science and ...classes.mst.edu/civeng217/robot/03.016.pdf · Chapter 3 . Problem 16 . Determine the force in each member of the roof

Tables

(The yellow areas are in tension, while the red areas are in compression.)

Page 4: Chapter 3 Problem 16 - Missouri University of Science and ...classes.mst.edu/civeng217/robot/03.016.pdf · Chapter 3 . Problem 16 . Determine the force in each member of the roof

Results

My handwritten calculations are the same as my generated calculations.

FAB= 1.6k (Tension)

FAJ= 2.56k (Compression)

FJI= 2.56k (Compression)

FJB= 0

FBI= 0

FBC=1.6k (Tension)

FCI= 0

FCD= 1.6k (Tension)

FFG= 1.89k (Compression)

FFE= 1.6k (Tension)

FGH=1.89k (Compression)

FGE= 0

FEH= 0

FED= 1.6k (Tension)

FHI= 1.89k (Compression)

FHD= 0

FDI= 0

FDC= 1.6 (Tension)