SLB Interview Question: Why are man-hole covers round? | Glassdoor

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SLB

SLB Field Engineer interview

SLB Interview Question

Field Engineer Interview

Why are man-hole covers round?

Interview Answers

Anonymous

Dec 18, 2010

So they can't fall into the hole.

1

Anonymous

Jan 12, 2011

The hole is round. A non-round cover wouldn't fit

Anonymous

Feb 10, 2011

I've seen square manholes covers

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