What is the required thickness t of the steel plates
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A simple beam of length L = 3.2m is subjected to a uniform load of 70 kN/m. The beam (see figure), made up of wood flanges and steel side plates, has the ff dimensions: wood flanges 75mm x 100 mm, and steel plates are 300 mm deep. Take the moduli of elasticity for the steel and wood to be 210 GPa and 10 GPa, respectively.
What is the required thickness t of the steel plates if the allowable stresses are 120 MPa for the steel and 6.5MPa for the wood? Hint: transform steel into wood. (Express your answer in mm, up to 1 decimal place)
Transcribed Image Text:75 mm
300 mm
75 mm
100 mm
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