The 'crane girder' (overhead travelling crane beam) is designed for:
Choose the correct answer
Only dead load of the crane itself
Fatigue (repeated cycles), biaxial bending (vertical + lateral surge), local web bearing, and impact factor (25%)
Only horizontal wind loads on the building
Static wheel load with no impact or fatigue
Correct Answer
B. Fatigue (repeated cycles), biaxial bending (vertical + lateral surge), local web bearing, and impact factor (25%)
Why is this the answer?
Crane girder: supports overhead crane wheels. Special considerations: (1) Fatigue loading (repeated wheel passes — IS 807 classifies cranes M1 to M8, IS 800 Cl. 13); (2) Biaxial bending (vertical wheel load → vertical bending; lateral surge force from crane → lateral bending on top flange); (3) Local web crippling under concentrated wheel load; (4) Impact factor: typically 25% added to static wheel load. Worst combination: maximum vertical + lateral surge. Dynamic analysis needed for heavy cranes.
Related Steel Structures MCQs
More solved Steel Structures questions for AE/JE Civil Engineering exams.
- The 'residual stresses' in hot-rolled steel sections arise from:
- The 'effective slenderness ratio' for a single angle compression member (IS 800)...
- 'Fatigue failure' in steel structures occurs under:
- The 'tension field action' in a plate girder web after buckling means:
- Bolts in 'slip-critical' (HSFG) connections resist load by:
- The 'portal frame analysis' approximation for multi-storey frames under horizontal load...
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.