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In Germany (on the island Sylt) they recently removed all of these structures again after decades of them being a staple on Sylt's beaches. They were found to h
by walski 2mo ago
In Germany (on the island Sylt) they recently removed all of these structures again after decades of them being a staple on Sylt's beaches. They were found to have no positive effect on protecting their shores.
I'm having a hard time to find a good source to quote but look for: "sylt tetrapoden" if you want to dive deeper.
- walski 2mo agoOk I stand corrected these are NOT tetrapods. Sorry for the confusion
- gilleain 2mo agoWell, confusingly, the last picture on the blogpost look (to my untrained eye) to be tetrapods. Those are 'tetrahedral' (ish) shapes. In contrast, the https://en.wikipedia.org/wiki/Dolos https://en.wikipedia.org/wiki/Dolos (plural 'Dolosse') are two tapering cylinders at right angles to each other. They have the same symmetry, but a different structure. Does that make any difference to how effective they are? No idea! edit: When I said the "same symmetry" of course I should have said the dolos has some of the symmetries of the tetrapod (subgroup?).
- s03nk3 2mo agoMaybe the form variations were just for patent circumvention.
- Havoc 2mo agoI find it hard to believe they have not protective effect. You can throw pretty much anything hard with an irregular shape down and it’ll help scatter energy
- bix6 2mo agoThey don’t prevent erosion though which is the primary issue