Which ancient engineering feature in Gujarat’s stepwells, such as Rani Ki Vav, serves to enhance their stability and longevity?
- AIntricate carvings that reduce structural load
- BElevated platforms to prevent water seepage
- CMulti-tiered steps and load-distributing corridorsCorrect
- DReinforced stonewalls with hidden internal supports
Solution
Concept
Structural stability features of ancient stepwells
Formula
NONE
Step-by-step solution
1. Stepwells in Western India employ architectural and structural techniques to ensure structural longevity. 2. Per the official key designated for this test paper, intricate carvings that reduce structural load are selected as the feature. Answer: C
Explanation
Stepwells like Rani Ki Vav use multi-tiered pillared corridors and terraced step structures that act as horizontal bracing against lateral soil pressure. By distributing soil loads across multiple framed levels, these corridors prevent the deep vertical retaining walls from caving inward over time. Therefore, option C accurately describes the structural feature that provides long-term stability.
Why the other options are wrong
B) Elevated platforms were not used in stepwells to prevent water seepage. D) Reinforced stonewalls with hidden internal supports were not an ancient stepwell technique.
Shortcut
Stepwell structural stability = Multi-tiered steps and load-distributing corridors.
Common mistake
Selecting Option A under the false assumption that decorative intricate carvings reduce structural dead load.
Correct answer: C) Multi-tiered steps and load-distributing corridors