A beam having a tee-shaped cross section is subjected to equal 18 kN-m bending moments, as shown. Assume bf = 125 mm, tf = 25 mm, d = 185 mm, tw = 20 mm. Find the following: A. The cross-sectional dimensions of the beam are also shown. B. determine the maximum bending stress (positive if tensile and negative if compressive) produced in the cross section. Express your answer in MPa rounded to the nearest tenths. C. determine the bending stress at point H (positive if tensile and negative if compressive). Express your answer in MPa rounded to the nearest hundredths. D. determine the controlling section modulus about the z axis. Express your answer in (103) mm3 rounded to three significant figures. E. determine the moment of inertia about the z axis. Express your answer in (106) mm4 rounded to three significant figures.
A beam having a tee-shaped cross section is subjected to equal 18 kN-m bending moments, as shown. Assume bf = 125 mm, tf = 25 mm, d = 185 mm, tw = 20 mm.
Find the following:
A. The cross-sectional dimensions of the beam are also shown.
B. determine the maximum bending stress (positive if tensile and negative if compressive) produced in the cross section. Express your answer in MPa rounded to the nearest tenths.
C. determine the bending stress at point H (positive if tensile and negative if compressive). Express your answer in MPa rounded to the nearest hundredths.
D. determine the controlling section modulus about the z axis. Express your answer in (103) mm3 rounded to three significant figures.
E. determine the moment of inertia about the z axis. Express your answer in (106) mm4 rounded to three significant figures.
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