The answer they're looking for is that with a square cover there's a risk of it falling through and crushing a hapless sewer worker (and their lives are bad enough already).
Also, they're heavy, and making them round means you can roll them to where you need them.
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timeasmymeasure
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Date: 2004-03-07 07:43 pm (UTC)Also, they're heavy, and making them round means you can roll them to where you need them.