A wood beam 200 mm wide by 240 mm deep is reinforced with 2-200 mm by 10mm thick steel plates at the top and bottom. The allowable bending stresses are 120 MPa for steel and 8 MPa for wood. Use Es/Ew = 20. Determine the maximum bending moment that can be carried safely by the beam. Convert wood to steel. a. Locate the NA from the bottom in mm ( Ÿ ) b. Find the Moment of Inertia of the composite section in mm4 ( INA ) c. Find the max moment capacity of the section in kN-m
A wood beam 200 mm wide by 240 mm deep is reinforced with 2-200 mm by 10mm thick steel plates at the top and bottom. The allowable bending stresses are 120 MPa for steel and 8 MPa for wood. Use Es/Ew = 20. Determine the maximum bending moment that can be carried safely by the beam. Convert wood to steel. a. Locate the NA from the bottom in mm ( Ÿ ) b. Find the Moment of Inertia of the composite section in mm4 ( INA ) c. Find the max moment capacity of the section in kN-m
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A wood beam 200 mm wide by 240 mm deep is reinforced with 2-200 mm by 10mm thick steel plates at the top and bottom. The allowable bending stresses are 120 MPa for steel and 8 MPa for wood. Use Es/Ew = 20. Determine the maximum bending moment that can be carried safely by the beam. Convert wood to steel.
a. Locate the NA from the bottom in mm ( Ÿ )
b. Find the Moment of Inertia of the composite section in mm4 ( INA )
c. Find the max moment capacity of the section in kN-m
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