Consider the following statements regarding the maintenance of the advanced Harappan street drainage networks:
1. The main street drains were fully covered using large brick or stone slabs that could be easily lifted for periodic cleaning.
2. Brick-lined sumps or silt traps were incorporated at regular intervals along the grid to collect heavy solid waste and prevent clogging.
Which of the statements given above is/are correct?

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Accepted Answer

The civic sense of Harappans is unmatched. Drains were not left open to cause health hazards; they were systematically sheltered under loose masonry blocks. Silt traps allowed sand and garbage to settle down at the bottom of the sumps, which civic workers routinely cleared out via inspection manholes.

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