(25 pts.) A seating bench is designed using only the sizes of round dowel stock shown in the table. The legs of the benc

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25 Pts A Seating Bench Is Designed Using Only The Sizes Of Round Dowel Stock Shown In The Table The Legs Of The Benc 1 (75.15 KiB) Viewed 13 times

(25 pts.) A seating bench is designed using only the sizes of round dowel stock shown in the table. The legs of the bench are to be made of Douglas Fir. This design is for compressive failure, not yield, S. -LN [2.80, 0.2] ksi. The design is for a static load of eight 95th percentile males on the bench. (Use FERef for load and standard deviation.) There are four legs to the bench. Assume an evenly distributed axial load on each leg, no bending, no buckling. Give the load data for one leg of the bench (fill in the blanks): P-LN [ ] kip b. What is the value of z that corresponds to a reliability of 0.995 against compressive failure? c. What is the design factor associated with a reliability of 0.995 against compressive failure? d. What diameter dowel is needed for a reliability of 0.995? What size of standard dowel is needed for a minimum reliability of 0.995 against failure? Standard 3/8 7/16 1/2 5/8 3/4 7/8 1 Diameter e. f. What is the actual factor of safety?