Fire-Baked Brick Production Required Controlled Kiln Temperatures Above 600°C

Producing durable Harappan baked bricks required kiln temperatures exceeding 600°C across thousands of units.

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Unlike many contemporaneous cultures, the Harappans widely used baked bricks rather than sun-dried mud bricks for major structures.

Harappan builders relied heavily on kiln-fired bricks during the Mature phase between 2600 and 1900 BCE. Achieving sufficient hardness required sustained high temperatures, often above 600 degrees Celsius. Large-scale kiln operations consumed significant quantities of fuel. Standardized molds ensured uniform brick dimensions across cities. Kiln placement had to balance proximity to clay sources and urban centers. The durability of fired bricks enabled multi-story construction and drainage infrastructure. Archaeological remains include kiln sites and overfired brick fragments. Brick technology allowed architectural permanence. Heat stabilized urban ambition.

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Institutionally, mass brick production implies organized labor and resource planning. Fuel procurement required woodland management. Construction standards across distant settlements reflect shared technical knowledge. Durable materials reduced maintenance costs. Kiln operations supported continuous urban expansion. Technological consistency reinforced civic order. Fire became foundation of permanence.

For brickmakers, maintaining kiln temperature demanded constant supervision. Workers monitored airflow and fuel levels through long firing cycles. Families living near kilns experienced smoke and heat as daily realities. The bricks they produced framed homes, drains, and citadels. The physical endurance of cities relied on thermal precision. Craft labor shaped skyline. Civilization hardened in flame.

Source

Encyclopaedia Britannica - Harappa

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