Why is the safety factor chosen for the yield strength at the design temperature smaller as the diameter of the stud (bolt) increases?
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On page 20 of TSG21-2016, in Table 3-5 regarding the safety factor for studs (bolts), why is it that the larger the diameter of the stud (bolt), the smaller the safety factor chosen for its yield strength at the design temperature?
Article 3 on page 41 of the interpretation of standard GB150-2011: The safety factor for fasteners. There is a detailed explanation there; take a look and you’ll understand.
Thank you very much; it seems I need to take a closer look at the materials.