The truss shown below is a statically determinate model of a braced frame with two single diagonal braces and design lateral loads.
(a) Use equilibrium equations of the entire stucture to find the external reactions. Draw a free body diagram of the structure with the magnitude and correct direction of each reaction.
Answers: 0 kip , 52 kip (downward), 40 kip (left) , 52 kip (upward)
(b) Use the method of sections to find the axial force in each brace (B1-B2). Report the magnitude and sense of the axial force (Tension or Compression) for each
brace in the table below.
Answers: 56.57 kip (C), 20 kip (T)
(c) Use the method joints to find the axial force in the column and girder members (C1-C4 and G1-G2). Report the magnitude and sense of the axial force (Tension or Compression) for each column and girder member in the table below.
