A beam having a tee-shaped cross section is subjected to equal 7 kN-m bending moments, as...

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A beam having a tee-shaped cross section is subjected to equal 7 kN-m bending moments, as shown. Assume b= 110 mm, t+= 25 mm, d = 150 mm, tw = 35 mm. The cross-sectional dimensions of the beam are also shown. Determine (a) the centroid location (measured upward from the bottom), the moment of inertia about the z axis, and the controlling section modulus about the z axis. (b) the bending stress at point H (positive if tensile and negative if compressive). (c) the maximum bending stress (positive if tensile and negative if compressive) produced in the cross section. bf M Answers: (a) y = i √₂ = "N i S = i M H mm Cross section (106) mm4 (103) mm³ (b) σ = i MPa (c) Omax= i MPa A beam having a tee-shaped cross section is subjected to equal 7 kN-m bending moments, as shown. Assume b= 110 mm, t+= 25 mm, d = 150 mm, tw = 35 mm. The cross-sectional dimensions of the beam are also shown. Determine (a) the centroid location (measured upward from the bottom), the moment of inertia about the z axis, and the controlling section modulus about the z axis. (b) the bending stress at point H (positive if tensile and negative if compressive). (c) the maximum bending stress (positive if tensile and negative if compressive) produced in the cross section. bf M Answers: (a) y = i √₂ = "N i S = i M H mm Cross section (106) mm4 (103) mm³ (b) σ = i MPa (c) Omax= i MPa