On the other hand, it seems that for small covers, they are made rectangular. Maybe because they are not heavy, so it's not much pain and doesn't take long time to orientate them correctly. And making rectangular cover is easier than making circular cover, so I suppose that costs less money.
However, I can't tell you if there's any "maximum" diameter for such "small" rectangular covers when a circular cover is preferable.
The "diagonal" problem can be solved by Reuleaux triangle or other similar "polygons or curves of constant diameter. San Francisco city actually has this kind of cover. Look at maa (.) org/FoundMath/08week21.html
It worths notice that the area of Reuleaux triangle is smaller than a circle of the same "diameter" so it's lighter and needs less material.
But, of course, round covers are easier to manufacture than Reuleaux triangle. And for easy orientation issue, round covers are preferred.
why am i watching this
MrSmileyFella 5 months ago
On the other hand, it seems that for small covers, they are made rectangular. Maybe because they are not heavy, so it's not much pain and doesn't take long time to orientate them correctly. And making rectangular cover is easier than making circular cover, so I suppose that costs less money.
However, I can't tell you if there's any "maximum" diameter for such "small" rectangular covers when a circular cover is preferable.
Horinius 7 months ago
The "diagonal" problem can be solved by Reuleaux triangle or other similar "polygons or curves of constant diameter. San Francisco city actually has this kind of cover. Look at maa (.) org/FoundMath/08week21.html
It worths notice that the area of Reuleaux triangle is smaller than a circle of the same "diameter" so it's lighter and needs less material.
But, of course, round covers are easier to manufacture than Reuleaux triangle. And for easy orientation issue, round covers are preferred.
Horinius 7 months ago
Triangles with all the same sides also avoid the "diagonal" problem.
LOLatFAIL 8 months ago
@LOLatFAIL Yep! But harder to put back in place.
TyYann 8 months ago
@LOLatFAIL Actually, they don't have diagonals, but their altitude is shorter than their side, and this would cause the same problem...
TyYann 7 months ago
I thought about that, and I also think that they are easier to trasport if there are round, the workers can roll them.
mujijibu 2 years ago
Ooh, that's a good fact.
singingbanana 2 years ago