CIVE 512 - Quiz 3 - Solution - 2018.pdf - Q1 Whitmore width L r lamda Cr 661.9 400 2.887 1.110 952.5 mm mm mm kN Q2 E delta t h s 200000 0.03 12 75 38.4

# CIVE 512 - Quiz 3 - Solution - 2018.pdf - Q1 Whitmore width...

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Q1: Whitmore width 661.9 mm L 400 mm r 2.887 mm lamda 1.110 Cr 952.5 kN

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Q2: E 200000 200000 MPa delta 0.03 0.0151 mm t 12 12 mm h 75 75 mm s 38.4 19.328 MPa gamma 3.61E+11 3.61E+11 MPa, mm m 3 3 N 6.38E+06 5.00E+07 Cycles N 12.75 100.0 Years Q3: CS1 CS2 CS3 CS4 CS5 CS1 0.800 0.200 0.000 0.000 0.000 CS2 0.000 0.800 0.200 0.000 0.000 CS3 0.000 0.000 0.800 0.200 0.000 CS4 0.000 0.000 0.000 0.800 0.200 CS5 0.000 0.000 0.000 0.000 1.000 5 6 7 0.32768 0.262144 0.209715 0.4096 0.393216 0.367002 0.2048 0.24576 0.275251 0.0512 0.08192 0.114688 0.00672 0.01696 0.033344 \$ 20006 (= 0.03334 * \$600,000)
Q4: Q5: a) pullout, concrete cone failure, steel anchor fracture b) i) removes surface defects and reduces stress concentration factor, ii) introduces compressive residual stresses, which keep micocracks closed during all or part of the load cycle c) Heat straightening takes advantage of plastic deformation during heating and elastic rebound during cooling to change the shape of a steel plate. It is often used to repair impact damage. It

Unformatted text preview: requires heat cycles and a restraint or jacking force to be effective. d) Average condition state, probability of failure, and life-cycle cost metrics do not consider the impacts of decisions on all stakeholders. While these metrics are understood by engineers, they do not effectively address the main concerns of politicians and the general public. e) Shorter elements tend to experience a load cycle with each axle passage, where as larger elements tend to experience a single large cycle with each train passage. f) Weaker – since mortar is easier to repair. Fy0 250 MPa Fyn 350 MPa p 275 mm A0 63700 mm 2 An 35750 mm 2 q 65 mm phi 0.9 phi 0.9 d 427 mm n 1.34 n 1.34 kx 1 kx 1 ky 1 ky 1 rx0 163 mm rxn 246 mm ry0 88 mm ry0 79.38566 mm L 7500 mm L 7500 mm E 200000 MPa E 200000 MPa lamdax0 0.51782 lamdaxn 0.405971 lamday0 0.959144 lamday0 1.258022 Crx0 12737 kN Crxn 10565 kN Crx 23302 kN Cry0 8898 kN Cry0 5154 kN Cry 14052 kN...
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