Calculate with 95% certainity the tensile strength of a garde 5 and garde 8 bolt

Question

Calculate with 95% certainity the tensile strength of a garde 5 and garde 8 bolt. calculate K for both grade bolts, calculate the maximum pre-load for a permanent connection for each grade bolt and calculate the maximum pre-load for a non-permanent connection for each bolt.

Given information: both bolts are 1/2"

Test 1: Grade 5 bolt with grade 5 nut:16200 psi

Test 2: Grade 5 bolt with grade 8 nut:17750 psi

Test 3:Grade 5 bolt with grade 8 nut:17500 psi

Test 4: Grade 8 bolt with grade 8 nut:22750 psi

Test 5: Grade 8 bolt with grade 8 nut:22900 psi

Test 6:Grade 8 bolt with grade 8 nut:13600psi- bolt wasnt fully on

Explanation / Answer

tell me the book,chapter and problem no.?if u have?i have the solutions

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