urbanite construction and raised beds
Our backyard used to be a parking lot, and there's still a lot of concrete back there. At a work party recently, we busted up another 10'x10' square. With that busted concrete, I built a retaining wall for the raised beds that also serves as a bench for the social area around the swing. I was really surprised how well it turned out.
I learned a few things while doing this, which hopefully I, or you, can use in future urbanite construction.
My wall is rather narrow, which is preferable for a host of reasons - aesthetic, space conserving - but it's only put together with dirt, no mortar or cob or nothin'. So while it feels really stable right now, I'm not sure about its longevity.
Besides just making it thicker, or using cob under the top layer, I think it could be made to be sturdier if I hadn't made it flat at each level. Here's an illustration of what I mean:
If I was to do it again, I would make each level slant in toward the dirt, and only make the top pieces level. Or, if it was a stand-alone wall, I would make it lean in on itself, each cross section looking like a very shallow "V." Basically, as Kevin (one of my Grovers) pointed out, the cross section would be a modified (filled in) arch. This way it would better resist any lateral pressures.
Okay. So I mentioned that we made raised beds, but I didn't show any pictures yet. We used a basket-weaving technique with a lot of the trimmings from trees in our yard and on the street. Here's a couple of pictures.
a close up.
and now, an overhead:
Bob van de Walle, one of the Grovers, keeps a blog where he also mentions the raised beds. His pics might give you another idea of what they look like (tho his are during construction).
He also mentions the sprouting of some of the stakes that we used to build the raised beds. This is a concern, but we're monitoring it to make sure it doesn't get out of hand.
I learned a few things while doing this, which hopefully I, or you, can use in future urbanite construction.
My wall is rather narrow, which is preferable for a host of reasons - aesthetic, space conserving - but it's only put together with dirt, no mortar or cob or nothin'. So while it feels really stable right now, I'm not sure about its longevity.
Besides just making it thicker, or using cob under the top layer, I think it could be made to be sturdier if I hadn't made it flat at each level. Here's an illustration of what I mean:
If I was to do it again, I would make each level slant in toward the dirt, and only make the top pieces level. Or, if it was a stand-alone wall, I would make it lean in on itself, each cross section looking like a very shallow "V." Basically, as Kevin (one of my Grovers) pointed out, the cross section would be a modified (filled in) arch. This way it would better resist any lateral pressures.
Okay. So I mentioned that we made raised beds, but I didn't show any pictures yet. We used a basket-weaving technique with a lot of the trimmings from trees in our yard and on the street. Here's a couple of pictures.
a close up.
and now, an overhead:
Bob van de Walle, one of the Grovers, keeps a blog where he also mentions the raised beds. His pics might give you another idea of what they look like (tho his are during construction).
He also mentions the sprouting of some of the stakes that we used to build the raised beds. This is a concern, but we're monitoring it to make sure it doesn't get out of hand.
posted by aaron at 4/15/2008 12:09:00 AM
2 Comments:
Beautiful garden pictures. I volunteer at a school garden that has themes for their raised beds that I thought your readers might find fun. The name of the school garden is Woodward Gardens and it is located in Tigard, Oregon. http://www.betterlivingshow.org/WoodwardGardensraisedbeds.asp
Just an update on the wall construction:
Six months in, and the wall/bench has received normal use and has not needed any maintenance. I extended it slightly when we installed soaker hoses and replanted the bed. I still think the filled in arch construction is a good idea, but apparently the flat construction is fairly sturdy on its own.
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