A W section is used as a beam without lateral support. A36 steel is used with Fy3D248 MPa. Compute the allowable bending stress(MPa) if it has a simple span of 9 m. Properties of W Section A=24709.6 mm2 d 840.74 mm tw3D14.73 mm I 2792.9 x 106 mm I, 90.74 x 106 mm S= 6653.15 x 103 mm b= 292.35 mm ty%3D21.72mm We Ar Sy 621.07 x 103 mm %3D De ry=335.28 mm Fla Ty = 60.45 mm Flar Wel Mor Sect Ime tw mm d. by

A compound steel (E = 30,000 ksi) bar is subjected to the loads shown.  Bar (1) has a cross-sectional area of A1 = 0.35 in.2 and a length of L1 = 120 in.  Bar (2) has an area of A2 = 0.35 in.2 and a length of L2 = 90 in.  Bar (3) has an area of A3 = 0.20 in.2 and a length of L3 = 45 in.  The loads and angles are P = 29 kips, α = 32°, Q = 11 kips, β = 57°, and R = 14 kips.  Determine the vertical deflection of end A. A downwards deflection is positive, while an upwards deflection is negative.

Find the allowable bending stress for the following shapes. Assume adequate lateral support for the compression flange. a.) W30 x132 of A36 Steel