Midterm B - Civ E 270 Midterm Examination Time: 2.0 Hours...

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Civ E 270 Midterm Examination Time: 2.0 Hours 26 October, 2004 7:00 PM – 9:00 PM Question 1 For the figure below: a. Determine the reactions and draw a FBD: b. Draw the shear force and bending moment diagram for the beam. c. Derive an expression for the moment for the mid-section, A-B. (Note that x begins at the left hand end of the beam.) Question 2 A soil sample under compression gave the data below. The specimen dimensions are Diameter = 37.5 mm, Length = 75 mm. Load (N) Displacement (mm) Stress (MPa) Strain (mm/mm) 0.0 0.00 214 0.38 456 1.13 709 2.03 933 3.00 1080 3.75 1256 5.63 1307 7.50 1309 9.38 1258 11.25 a. Calculate and plot the axial stress versus strain. b. Determine the secant modulus (in MPa) to 5% strain. c. Determine the tangent modulus (in MPa) at 5% strain d. Determine the ultimate stress during the test. Remember for a soil specimen the corrected area A = Ao/(1- ! )
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Question 3 A steel plate 100 mm by 150 mm by 10 mm is subjected to uniformly distributed stresses along its edges, as shown in the figure. (a)
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Midterm B - Civ E 270 Midterm Examination Time: 2.0 Hours...

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