QUOTE(ozak @ Oct 21 2011, 03:32 PM)
Ain't it easy to crack when bury a big clay urns/vases ?
I already plan a bigger hole around the vases so as not to have compressed earth acting on the ceramic walls, plus it will be in close proximity to each other, which should reduce a singular compressive packing of earth on an urn. And not burying them up fully to the rim of the clay urns should help in reducing cracking potential by downward compressive force from packed earth (despite the fact that it would be relatively shallow from the curved edge of any urn rim to the soil above). Even as the earth around the vases settle, I don't think there will be much force acting on the walls, if I get the correct sizes (too deep and thin walls; and it will crack in months or years).
Added on October 21, 2011, 7:20 pmQUOTE(kelvyn @ Oct 21 2011, 03:28 PM)
For larger size, and since you are planning to bury them, can use those fibre glass water tanks. cheaper as well.
I still can't get it out of my system of not using fibre-glass, PE or plastic water containers for this project. Maybe environmentally conscious? Heck, clay pots aren't really 'bio-degradable' but if you do shatter and grind them enough it really is soil in the end (though digging up the hole, and still finding old pot shards (and plastic whiskers from those plastic brush brooms) brings it to perspective).
Oh. And I forgot. I think I also prefer the look of a clay wall as opposed to any plastics.
This post has been edited by trencher10: Oct 21 2011, 08:18 PM