Use Virtual Work Method to answer the questions below considering the truss shown. Use the cross-sectional areas (A, in²) specified in the figure, E = 30 ksi and a 20 x 106/°F. "a" is hinge supported and "c" is roller supported. 80k (7.5) (4) 20' (3) (7.5) 20⁰ 10 15 1. Select the answer that most nearly gives the axial force on member cb from the real structure in kips. Put (-) negative sign if its under compression. [Select] 2. Select the answer that most nearly gives the absolute value of axial force on member ab from the virtual structure for horizontal displacement of joint d. [Select] 3. Select the answer that most nearly gives the absolute value of axial force on member bd from the virtual structure for horizontal displacement of joint d. [Select]
Use Virtual Work Method to answer the questions below considering the truss shown. Use the cross-sectional areas (A, in²) specified in the figure, E = 30 ksi and a 20 x 106/°F. "a" is hinge supported and "c" is roller supported. 80k (7.5) (4) 20' (3) (7.5) 20⁰ 10 15 1. Select the answer that most nearly gives the axial force on member cb from the real structure in kips. Put (-) negative sign if its under compression. [Select] 2. Select the answer that most nearly gives the absolute value of axial force on member ab from the virtual structure for horizontal displacement of joint d. [Select] 3. Select the answer that most nearly gives the absolute value of axial force on member bd from the virtual structure for horizontal displacement of joint d. [Select]
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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