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Question: two brackets are bolted together with a pattern of n4...

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Two brackets are bolted together with a pattern of N-4 equally sized bolts which are 2.25 long. The bolts are to be coarse thread (UNC), SAE grade 2, and zinc- plated. Assume this is a permanent connection. Given: 1.5 2.25 Select a minimum size for the bolts (from Table 8-2) that will withstand an external separating force (P) of 6,900 lbs. with a load factor n-2. Select a new minimum bolt size if the bolts are upgraded to SAE grade 5. The grip length () is increased to 2.25. Using the bolt size from Prob. 2, how long must the bolts be to make the joint work? (bolt lengths are available in V length increments)

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