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Old 08-29-2016, 06:55 PM
leahcim leahcim is offline
Join Date: Dec 2010
Location: Boulder, CO
Posts: 3,485
Originally Posted by Mangetout View Post
This is the correct answer. Wooden barrels and buckets are created by straining the staves against metal rings - if the rings were square, rather than circular, the forces acting on them would be trying to bend them toward a more circular shape.
I guess the unstated fact in this design is that the wooden slats are under constant compression by the hoops. Otherwise the bucket would leak water at the seams between the slats. A square bucket could be made more easily, but it would be harder to apply the constant force required to keep the seams closed.