For the single-story EBF shown in the figure to this problem:
(a) Determine if a W14 × 48 link beam has adequate strength to resist the externally applied 100 kips seismic ultimate lateral load Fu (divided into two equal 50 kips load as shown in the figure following).
(b) Indicate whether the same W14 × 48 link beam meets the appropriate compactness requirements for the intended purpose. (c) Assuming that an elastic computer analysis of this frame gives a drift δe = 0.129 in, determine the expected corresponding plastic link rotation angle. Assume Cd = 4.0 and I = 1.0.
(d) Using capacity design, determine if the W14 × 48 beam outside of the link has adequate strength for the expected combination of axial and bending forces in that member. Assume an unbraced length of beam outside the link of 6ft 0 in.
(e) Indicate whether the W14 × 48 beam outside of the link meets the appropriate compactness requirements for the intended purpose.
(f) Using capacity design, size the diagonal braces using the most economical W10 shape.
(g) Indicate whether the braces sized in part (f) above meets the appropriate compactness requirements for the intended purpose.
