The 'staging' of an elevated water tank (IS 11682) is designed to resist:
Choose the correct answer
Only the weight of water (no lateral loads)
Self-weight, water weight, wind overturning, and seismic loads (impulsive + convective) per IS 11682 and IS 1893 Part 2
Only traffic loads
Only snow loads on tank roof
Correct Answer
B. Self-weight, water weight, wind overturning, and seismic loads (impulsive + convective) per IS 11682 and IS 1893 Part 2
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Elevated water tank staging: columns/braces/shafts supporting the tank. Design loads: (1) Tank dead weight + water weight (full); (2) Wind load (overturn + drift); (3) Seismic force (IS 1893 Part 2 — impulsive + convective modes); (4) Empty tank + full earthquake (different critical case). IS 11682: staging types — column staging, shaft, cone-frustum. Bracing helps resist lateral loads.
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