A battened strut that is position-restrained at both ends yet free in directional rotation is assigned an effective length of________________?
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Answer: C. 1.1 L
Explanation
A battened strut position-restrained at both ends and free in directional rotation has an effective length factor assigned as one point one L. This effective length factor reflects the specific end restraint boundary conditions of the strut. Engineers use this factor to calculate the correct slenderness ratio and allowable compressive stress. Effective length accounts for how column ends are supported against rotation and lateral translation. Battened struts consist of main shafts connected by batten plates rather than continuous lacing. Boundary conditions significantly influence the theoretical Euler buckling load of compression members.
Structural designers apply effective length factors when sizing compression members in steel frames. Accurate boundary condition assessment prevents under-designing columns and truss compression chords. Standard design manuals provide tabulated effective length factors for various support conditions. An effective length of L assumes idealized pinned-pinned end boundary conditions. One point eight L represents a column fixed at one end and completely free at the other. One point five L corresponds to specific intermediate partial restraint conditions.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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