Design of Steel Structure
Study the following statements. i) Top lateral bracing prevents the sidesway buckling of the chord. ii) Sway bracing keeps the rectangular shape of the bridge cross-section. iii) Sway bracing transfers the load from top of end posts to bearings. The correct answer is

both (i) and (iii)
both (i) and (ii)
all (i), (ii) and (iii)
only (i)

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Design of Steel Structure
The mechanism method and the statical method give

lower and upper bounds respectively on the strength of structure
upper bound on the strength of structure
lower bound on the strength of structure
upper and lower bounds respectively on the strength of structure

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Design of Steel Structure
The sway bracing is designed to transfer

50% of the top panel wind load to bottom bracing
10% of the top panel wind load to bottom bracing
2Vi % of the top panel wind load to bottom bracing
25% of the top panel wind load to bottom bracing

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

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