Extracted text: The three beams shown have approximately the same cross-sectional area. Beam 1 is a W 14 x 82 with flange plates (A, = 24 in.?, hy = 14.3 in., I, = 881 in., b, = 8 in., tį = 0.52 in., bị = 10.1 in., t = 0.855 in., t = 0.51 in.); Beam 2 consists of a web plate with four angles (A. = 5.77 in.2, ca = 1.67 in., h. = 6 in., I, = 19.9 in., bz = 14 in., t = 0.675 in.); and Beam 3 is constructed of 2 C shapes with flange plates (A, = 14.7 in.?, he = 15 in., I. = 404 in., bg = 4 in., ts = 0.375 in., b? = 3.72 in., t = 0.65 in., t = 0.716 in.). Assume allowable stress values are: og = 18 ksi and T, = 11 ksi. The most economical beam is that having the largest capacity-to-weight ratio. Neglect fabrication costs in answering (c) and (d) below. 8 X 0,52 4 x 0.375 Four angles 6 x 6 X C 15 x 50 14 x 0.675 W 14 x 82 4 x 0.375 `8 × 0.52 Beam 1 Beam 2 Beam 3 (a) Which design has the largest moment capacity? -Select- v (b) Which has the largest shear capacity? |-Select- V (C) Which is the most economical in bending? -Select- v (d) Which is the most economical in shear? -Select- V