In which type of construction is a high plinth level recommended?

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  1. Desert regions
  2. Seismic zones
  3. Industrial buildings
  4. Flood-prone areas

Answer (Detailed Solution Below)

Option 4 : Flood-prone areas
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Explanation:
A plinth is the part of a structure between the ground level and the floor level. Raising the plinth is a common practice in areas with specific environmental or structural challenges.

  • In flood-prone regions, raising the plinth ensures that water from heavy rains or overflowing rivers does not enter the building. It acts as a physical barrier to prevent internal water damage.
  • A higher plinth helps avoid prolonged water contact with the base of walls and foundations. This reduces the risk of moisture ingress, which can cause mold, mildew, and weakening of structural materials.
  • By keeping the foundation above the flood level, the structure is less likely to experience erosion, scouring, or saturation that can weaken it over time.
  • In flooded areas, ground-level water can carry waste and contaminants. A raised plinth helps keep living areas clean and reduces health risks.

  • Local building codes in flood-prone regions often mandate a minimum plinth height to reduce disaster-related losses.

Additional InformationFactors considered while constructing buildings

  • Before construction begins, the soil's type and strength are evaluated. Stable, well-compacted soils with high bearing capacity support heavier loads and reduce the risk of foundation settlement or structural failure. Poor soil conditions may require special foundations like piles or rafts to ensure safety and durability.
  • Design and material choices depend heavily on local climate. In hot, dry regions, materials that offer insulation and thermal comfort are prioritized. In coastal or high-rainfall areas, corrosion-resistant materials and adequate drainage systems are incorporated to ensure long-term performance and safety.
  • In earthquake-prone areas, buildings are designed with seismic-resistance features like shear walls, bracings, and flexible joints. In regions with high wind speeds or cyclone risk, aerodynamic shapes and wind-resistant anchoring are used to reduce uplift and lateral forces on the structure.
  • The slope and features of the land influence drainage, accessibility, and layout. Flat terrain simplifies construction, while hilly areas may require cutting, filling, or terracing. The proximity to roads, utilities, and water sources also affects design and cost efficiency.
  • Structures are designed based on their intended use—residential, commercial, or industrial. Load requirements, safety norms, ventilation needs, and space utilization vary with occupancy type. A school building, for example, will have different structural and safety provisions than a warehouse.
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