Pregunta de entrevista de CHEP

Why is a man hole round?

Respuestas de entrevistas

Anónimo

1 oct 2013

cover will not damage tires, and easily moved

Anónimo

5 nov 2014

A round manhole cover cannot fall through its circular opening, whereas a square manhole cover may fall in if it were inserted diagonally in the hole. The existence of a "lip" holding up the lid means that the underlying hole is smaller than the cover, so that other shapes might suffice