For the statically indeterminate truss shown in Figure 1, use the stiffness method to: a) Determine the element stiffness matrix, K; for each element b) Assemble the structural stiffness matrix K for entire truss. c) Using the stiffness method, solve for the nodal displacement, D. d) Calculate the reaction forces, Q. e) Recover the forces, qi in each element. It is given that AE = 9500KN for all elements.

Q: Note: Pi= 1000 lb and P:= 500 lb 4 ft 4 ft 4 ft 666 239 222

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Members with compression and bending

Compression members are structural elements that carry compressive axial force. They are the vertical members of a building that support beams and their design, which is governed by buckling and strength. Columns are known as struct or compression members, which are subjected to compressive forces. These members provide stiffness to the building and avoid any imperfection regarding the transfer of axial load. For instance, webs in a truss, braces in a framed structure, tiers, and so on.