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Wall thickness on raised pond

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  • Wall thickness on raised pond

    Hi all,

    I'm about to begin buying materials to construct a raised pond. I have no idea what thickness the wood should be.

    The pond will measure approximately 11ft x 5ft. It will be partially submerged with depths of between 4ft and 3 ft. 2.5 ft will be above ground. I hope that makes sense. So, the question is, how thick does the above ground wood need to be?
  • #2

    Wood? Instead consider a poured concrete floor with block walls. Plan so that the walls go around 24" above grade to provide a nice seating area and keep out wind blown debris, mud, and any yard chemicals from getting in the pond. Also helps to keep 2 and 4 legged animals out of the pond. Suggested depth 6-8' with 2' above grade and the rest in ground.
    Koi keeping is not a belief system; it is applied science with a touch of artistry.

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    • #3

      Where are you located? If in a warm climate, having only 1.5 to 0.5 feet below the ground surface might work. (But, water could get very warm in summer.) If in a locale with true winter, pond may not be useable for several months of the year.

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      • #4

        I'm in The UK and raised wooden pools are fairly common.

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        • #5

          Originally posted by Happyclapper View Post
          I'm in The UK and raised wooden pools are fairly common.
          If you are building a frame for the liner made out of wood, I'd recommend that you use 2" thick by 6" wide or what we refer to as 2x6 board in the US. Make sure that you connect these to 4x4 posts that are anchored with cement to keep them in place and don't exceed 2 feet above ground if you keep the water level 4-6 inches from the top.
          Brian Sousa
          Koi-Bito Forum

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          • #6

            Thank you Brian, very much appreciated!

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            • #7

              Wall thickness

              Originally posted by Happyclapper View Post
              Hi all, I'm about to begin buying materials to construct a raised pond. I have no idea what thickness the wood should be. The pond will measure approximately 11ft x 5ft. It will be partially submerged with depths of between 4ft and 3 ft. 2.5 ft will be above ground. I hope that makes sense. So, the question is, how thick does the above ground wood need to be?

              Comment

              • #8

                Railway sleepers are a good option,laid on their flat. Be sure to buy new sleepers as used ones are treated with all sorts of chemicals which you would not want leaching into your pond.

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                • #9

                  Agree about concrete walls. I just used bamboo with some added elements as a face of the pond. So, it seems like the pond is buitl with bamboo and stones, but there are blocks inside

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