Question: PROBLEMS 361 3.24. Find and sketch the probability density function of vertical support reaction Y of a large radome during a windstorm when Y =

PROBLEMS 361 3.24. Find and sketch the probability density function of vertical support reaction Y of a large radome during a windstorm when Y = 3000 - 100X where X is a measure of the magnitude of the wind causing the uplift. X is log- normally distributed with parameters mx and oin X. 3.25. A structural engineer believes the yield stress S in mild steel reinforcing bars to be lognormally distributed with parameters ms = 40.0 ksi and in s = 0.1, while the bar areas A of nominal g-in.-diameter bars ("no. 9" bars) are lognormally dis- tributed with mean 1.0 in. and standard deviation 0.05 in. Find the distribution of the yield force F = SA, assuming independence of S and A. Sketch this density function and find P[F
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