Design of Steel Structure
When the bolts are subjected to reversal of stresses, the most suitable type of bolt is

turned and fitted bolt
high strength bolt
black bolt
ordinary unfinished bolt

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Design of Steel Structure
The elastic strain for steel is about

1/12 of strain at the initiation of strain hardening and about 1/120 of maximum strain
1/2 of strain at the initiation of strain hardening and about 1/12 of maximum strain
1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain
1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain

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