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P12.4. (a) Draw the influence lines for reactions MA, RA, and Rc of the beam in Figure P12.4. (b) Assuming that the span can be loaded with a 1.2 kips/ft uniform load of variable length, determine the maximum positive and negative values of the reactions. G MA |A RA k 8'— B hinge + P12,4 6'- C Rc 3² D

P12.4. (a) Draw the influence lines for reactions MA, RA, and Rc of the beam in Figure P12.4. (b) Assuming that the span can be loaded with a 1.2 kips/ft uniform load of variable length, determine the maximum positive and negative values of the reactions. G MA |A RA k 8'— B hinge + P12,4 6'- C Rc 3² D

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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### Problem P12.4 #### Part (a) - **Task**: Draw the influence lines for reactions \( M_A \), \( R_A \), and \( R_C \) of the beam in Figure P12.4. #### Part (b) - **Task**: Assuming that the span can be loaded with a 1.2 kips/ft uniform load of variable length, determine the maximum positive and negative values of the reactions. #### Diagram Description: - **Figure P12.4**: A structural beam is illustrated. - The beam begins at point \( A \) and ends at point \( D \). - Point \( A \) has two reaction components: a moment \( M_A \) and a vertical reaction \( R_A \). - Point \( B \) contains a hinge. - At point \( C \), there is a vertical reaction \( R_C \). - The beam extends to point \( D \) with no additional reactions shown. - The span from \( A \) to \( B \) is 8 feet, from \( B \) to \( C \) is 6 feet, and from \( C \) to \( D \) is 3 feet.
Transcribed Image Text:### Problem P12.4 #### Part (a) - **Task**: Draw the influence lines for reactions \( M_A \), \( R_A \), and \( R_C \) of the beam in Figure P12.4. #### Part (b) - **Task**: Assuming that the span can be loaded with a 1.2 kips/ft uniform load of variable length, determine the maximum positive and negative values of the reactions. #### Diagram Description: - **Figure P12.4**: A structural beam is illustrated. - The beam begins at point \( A \) and ends at point \( D \). - Point \( A \) has two reaction components: a moment \( M_A \) and a vertical reaction \( R_A \). - Point \( B \) contains a hinge. - At point \( C \), there is a vertical reaction \( R_C \). - The beam extends to point \( D \) with no additional reactions shown. - The span from \( A \) to \( B \) is 8 feet, from \( B \) to \( C \) is 6 feet, and from \( C \) to \( D \) is 3 feet.
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