A running track in a gymnasium is hung from the roof trusses by steel rods, each of which supports a tensile load of 14,600 lb. The round rods have a diameter of 7โ8 in. with the larger ends made by forging. This upset allows the full cross-sectional area of the rod to be utilized. If the allowable unit tensile stress for steel is 30,000 psi, investigate this design to determine whether it is safe or not? (ฯ = 3.14)
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