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Harappan Town Planning & Architecture






πŸ“Œ Topic 03 of 6 Β· Chapter 02 Β· Prehistoric India & IVC

Harappan Town Planning & Architecture

Grid pattern streets, Great Bath, granaries, drainage system, citadel vs lower town β€” IVC urban planning excellence.

πŸ™οΈ Harappan Town Planning β€” A Marvel of the Ancient World

The Harappan Civilisation had the most sophisticated urban planning of the ancient world. Their cities were planned with a grid pattern, excellent drainage, and clear zoning β€” features that modern cities still aspire to.

⭐ Key Achievement: The Harappan drainage system was the world’s first planned urban drainage system. Every house had drains connected to covered street drains β€” a level of sanitation not seen again in the world until the 19th century CE.

πŸ“ Grid Pattern Town Planning

  • Cities were laid out in a grid pattern β€” streets running north-south and east-west at right angles
  • Main streets were wide (9–10 metres); side lanes were narrower
  • Streets were well-lit β€” evidence of street lamps (lamp posts found)
  • Cities were divided into two parts: Citadel (upper town) and Lower Town

πŸ›οΈ Citadel vs Lower Town

FeatureCitadel (Upper Town)Lower Town
LocationElevated platform (west)Ground level (east)
ResidentsRuling class, priestsCommon people, merchants
StructuresGreat Bath, granaries, assembly hallsResidential houses, workshops
FortificationFortified with thick wallsLess fortified
ExampleMohenjo-daro citadelMohenjo-daro lower town

πŸ› The Great Bath β€” Mohenjo-daro

  • Located in the citadel of Mohenjo-daro
  • Dimensions: 12m Γ— 7m Γ— 2.4m deep
  • Made of burnt bricks with bitumen waterproofing
  • Steps on both ends; changing rooms on sides
  • Surrounded by a corridor and rooms
  • Purpose: Ritual bathing β€” religious/ceremonial significance
  • Described by archaeologist John Marshall as “the earliest public water tank in the ancient world”

🌾 Granaries

  • Large granaries found at Harappa and Mohenjo-daro β€” evidence of centralised food storage
  • Harappa granary: Located near the river for easy loading/unloading
  • Evidence of state control over food distribution
  • Air ducts in granary floors β€” to prevent grain from rotting

🚿 Drainage System β€” World’s First

  • Every house had a bathroom and toilet connected to drains
  • House drains connected to covered street drains
  • Street drains had manholes for cleaning
  • Drains made of burnt bricks β€” durable and hygienic
  • Wastewater flowed to soakage pits outside the city
  • This drainage system was far superior to contemporary civilisations in Egypt and Mesopotamia

🏠 Houses & Architecture

  • Houses made of standardised burnt bricks (ratio 1:2:4 β€” width:height:length)
  • Most houses were two-storey with flat roofs
  • Houses had courtyards in the centre
  • Doors and windows opened onto side lanes, not main streets (for privacy)
  • Evidence of wells in houses β€” private water supply
  • No temples found β€” suggests religion was practised at home
πŸ“ Exam Tip:
β€’ Great Bath β†’ Mohenjo-daro β†’ ritual bathing
β€’ Dockyard β†’ Lothal β†’ trade
β€’ Fire altars β†’ Kalibangan and Lothal β†’ religious rituals
β€’ Standardised bricks β†’ ratio 1:2:4 β†’ evidence of central authority
β€’ No temples found in IVC β€” unlike Egypt and Mesopotamia