New pond build

Discussion in 'Pond Construction & Equipment' started by Jbad87, Oct 17, 2017.

  1. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Hello all,


    I am almost complete with my latest build. My background is almost 10yrs of pond keeping. I was a member on here years ago during my first two builds. I have since forgotten my login info and had to create a new account. Last year rodents ate into my liner while I was on a two week trip. Unfortunately they continued to eat the liner down to access the water until they created holes low enough the pump ran dry and the system crashed. This happened in the middle of the summer. I lost my three eight year old koi but their one offspring made it. I did not lose a single goldfish. I was so upset with the loss I almost called the quits for pond keeping. My wife talked me into building another. My previous pond was a natural in ground design. It looked great but did not go with our yard. This time we decided on a formal all above ground build using both wood and metal to match a planter box we built.

    The pond is on top of a preexisting 10.5’ X 10.5’ X 4” deep cement slab that used to have a shed sitting on it. The ponds total dimensions are, L X W X H, 10.5’ X 10.5’ X 30” filling to just shy of 2100 gallons. The pond is stocked with far too many goldfish and one Koi. If anyone lives in the Sacramento area and would like some goldfish please let me know. The pond utilizes a Dreampond in pond 3” bottom drain connected to a 2” bulkhead. The filtration is handled by a Sequence 750 4200 connected to a TSE Koi ABF 2. The water makes its way back into the pond through two total Pond 14” lite spillways. There is also an Oase AquaSkim 40 in pond skimmer teed into the drain line. Currently the pump does not pull enough water for the skimmer to function properly so I will tee in an external little giant 4000gph into the drain line and run it a few hours a day. The bottom drain has a diffuser incorporated into the top which is fed by a 560gph air pump.

    The pond is built using15 5’ 4x4 posts buried in 2’ of cement. The corners are 6x6 buried to 2.5’, cemented as well. To ensure there are no failures of the posts there is a ¼” vinyl covered steel rope belly band 3.5” down from the top of the posts. All the 4x4’s and cap wood is redwood and the rest is pressure treated Doug fir. The sides of the pond are made up of 2x6 redwood stacked, the aft is ¾ ply, and the front is corrugated metal backed with ¾ ply. The rear wall will eventually continue all the way to the top with the same 2 X 8 pressure treat that is being used. Also a shade will fill in the top of the structure. The pond sits in shade for the vast majority of the day with the maximum amount of area impacted by the sun being ½.

    So far everything is running great and I am going to let the system mature before making adjustments to the filtration system, if required. I plan to move half of the goldfish out, if I can find a good safe home for them. I will continue to post updates through the completion. If anyone has any questions please ask. I consulted a friend of mine that is a structural engineer prior to the build to ensure all the design and materials would endure the weight of the water. I have completed all the work myself or with my best buddy.


    Break down of materials and cost:

    Building materials

    50 X 50lbs bag cement $175

    8 X 4x4x10 Redwood $112

    4 X 2X8X12 Redwood $172

    4 X 6x6x12 Pressure treat $200

    6 X 2X8X16 Pressure treat $192

    3 X ¾”X4X8 exterior grade ply $180

    1 X Corrugated metal $36

    Fasteners $100

    Pond materials

    Liner 20x20 $260

    Plumbing $200

    Pump $360

    Filter (used) $400

    Skimmer $100

    Spillways $110

    Air pump $30

    Total build cost so far $2627
     
    Jbad87, Oct 17, 2017
    #1
    CometKeith, j.w, Tula and 2 others like this.
    1. Advertisements

  2. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Here are some pictures
     

    Attached Files:

    Jbad87, Oct 17, 2017
    #2
    DrCase, j.w, sissy and 1 other person like this.
    1. Advertisements

  3. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    One more picture from the other side.
     

    Attached Files:

    Jbad87, Oct 17, 2017
    #3
    Lisak1, CeeJayH, sissy and 3 others like this.
  4. Jbad87

    addy1 water gardener / gold fish and shubunkins Moderator

    Joined:
    Jun 23, 2010
    Messages:
    32,301
    Likes Received:
    16,565
    Location:
    Frederick, Maryland
    Very nice! Welcome to our ponding group!
     
    addy1, Oct 17, 2017
    #4
  5. Jbad87

    Gemma

    Joined:
    Jun 8, 2016
    Messages:
    1,880
    Likes Received:
    1,514
    Sorry you lost your koi, I'm glad your wife talked you into this new built cause it looks great!
     
    Gemma, Oct 17, 2017
    #5
  6. Jbad87

    IPA

    Joined:
    Aug 9, 2017
    Messages:
    402
    Likes Received:
    244
    Location:
    63b Chesapeake-Pamlico Lowlands and Tidal Marshes
    Glad you are back, here and with ponding. Thanks for all of the details, it is very informative and I see many posts with questions which are answered with this information. It looks great!
     
    IPA, Oct 17, 2017
    #6
  7. Jbad87

    Tula

    Joined:
    Sep 14, 2013
    Messages:
    3,643
    Likes Received:
    2,730
    Location:
    Cincinnati, Ohio
    Welcome back, your new pond looks great !
     
    Tula, Oct 18, 2017
    #7
  8. Jbad87

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    29,984
    Likes Received:
    13,271
    Location:
    Axton virginia
    welcome back and been there with rodents chewing my liner also .I put down milky spore to get rid of grubs which the moles that chewed my liner were after
     
    sissy, Oct 18, 2017
    #8
  9. Jbad87

    j.w I Love my Goldies

    Joined:
    Feb 1, 2010
    Messages:
    23,863
    Likes Received:
    13,494
    Location:
    Arlington, Washington
    upload_2017-10-18_9-50-29.gif @Jbad87 That new pond is very nice (y)
     
    j.w, Oct 18, 2017
    #9
  10. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Thanks everyone! One thing I remember from this group is how very positive everyone is. I had a cinder block perimeter set up as a footing around my old pond. I had the blocks placed so that the openings faced the liner. I had a fabric barrier between the two. I would never have assumed rats would get in and destroy the liner. If I had to do it again I would have turned the blocks the other way and back filled with sand or cement. The rats made a tunnel network around the pond. When I pulled the old liner out last week six or so rats went running off. We live at the base of foothills so we always have some pests running around. I always feel bad offing little fuzzy guys but, as proven, they can create a considerable amount of damage. Those are the only fish I have ever lost so it was a total bummer. Pepole that don't love fish don't understand the connection you form with your finned family members.


    Sissy, that's crazy the moles were eating into your liner.

    One small update. One of the Total Pond spillways developed a leak from the spillway. There is no gasket between the exit and the body of the spillway. it's just plastic to plastic. I will try to tighten it but may end up swapping it out with another of the same. I really like the product and the other one is perfect.
     
    Jbad87, Oct 18, 2017
    #10
    Gemma and j.w like this.
  11. Jbad87

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    29,984
    Likes Received:
    13,271
    Location:
    Axton virginia
    yep the chewed it in several spots and my block wall were 2 layers high and solid face on inside wall but they chewed below the block . I am just guessing they figured the vibration from the water was more slugs .Could you use a plastic weld product to glue the 2 plastic pieces back together or a waterproof glue.By the way I love your pond was the metal wire put on to help hold it all together .An added measure never hurts
     
    sissy, Oct 19, 2017
    #11
  12. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Sissy, great idea on the plastic weld. I'll take a look tomorrow and see what the deal is. It's a minor leak so its not a primary concern.

    The metal band increased the load bearing capacity of the posts significantly past their load requirements for the pond. It wasn't required but is good insurance. I will butcher what my buddy said and any engineers please correct me. The total water weight is a little less than 18000lbs. Water is evenly distributed so the pond is considered with 5 walls, the ground being the 5th. 18000/5 = 3600. Considering the 4 vertical walls 3600x4 = 14400. Divide that by the number of posts, 19 = about 760 lbs of water weight per post equalling about 26psi on the post with the maximum force exerted furthest from the bend point where the post enters the cement. I had a great chart that showed the shear strength of 4x4 and 6x6 posts in various woods but now I cannot find it. The failure weight with a safety factor of 2 or 4, can't remember, was something like 1200lbs for the 4x4s and way higher for the 6x6. The minimum failure weight on the steel rope is near 5500lbs. Was it required? No, but makes for good peace of mind.
     
    Jbad87, Oct 19, 2017
    #12
  13. Jbad87

    CometKeith

    Joined:
    Nov 11, 2010
    Messages:
    3,055
    Likes Received:
    2,312
    Location:
    Chicago Area
    Hi and welcome back! What was your old name? The one thing I noticed that you may need to verify is that you mentioned the water is evenly distributed on the 5 walls of the liner. I have read that the pressure of water is much greater lower down on a wall than higher up.
     
    CometKeith, Oct 19, 2017
    #13
    sissy likes this.
  14. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Thanks CometKeith! I don't recall but probably something with koi or goldfish in it. Absolutely true about the greater force being near the lowest portion of the body of water. The lowest portion of the post is also the strongest with it decreasing as the lever increases. If the post was 2 feet in cement and 1 foot exposed you couldn't move it manually. Increase the exposed height to 10 feet and you might be able to manually work the post out of the ground. You being correct can be seen in soft sided above ground pools like Intex brand pools where the bottom bellies out. There is no concern for the water crushing the posts. The only concern is the lever force on the location that meets the cement.
     
    Jbad87, Oct 19, 2017
    #14
    CometKeith likes this.
  15. Jbad87

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    29,984
    Likes Received:
    13,271
    Location:
    Axton virginia
    Not sure where you live but have you considered winter a freeze .The water may get a lot colder being all exposed .The parts of my pond above ground have the pink foam insulation on the outside of the concrete blocks .I live on the southside of VA and we get cold weather around Jan. and into March
     
    sissy, Oct 19, 2017
    #15
  16. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Sissy, we are in California, between planting zone 9b and 10. We discussed cold with the guy we got our filter from. He lives in San Jose and runs a pond construction and maintenance company. He said it wouldn't be a factor with our weather. He maintains multiple 2 foot deep exposed fiberglass breeders without insulation or heat and he said his koi do great through the winter. They are closer to the bay than us but our weather stay extremely fair through winter with only a couple frost days and no snow ever, except once in 1996 for a few minutes.
     
    Jbad87, Oct 19, 2017
    #16
  17. Jbad87

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    29,984
    Likes Received:
    13,271
    Location:
    Axton virginia
    Then your only concern would be heat in the summer and the lack of oxygen .I have my stock tanks on wheels so I can move them
     
    sissy, Oct 19, 2017
    #17
  18. Jbad87

    Jbad87

    Joined:
    Oct 4, 2017
    Messages:
    9
    Likes Received:
    20
    Absolutely, heat in the summer. That's my primary weather concern. It is shaded until 4ish. I used a thermal barrier between the metal and wood in front. The rest will never see direct light. I have an aerator in there and the bottom drain so I'm thinking the oxygen levels will be good. I'm also hoping to thin back the number of goldies.
     
    Jbad87, Oct 19, 2017
    #18
  19. Jbad87

    Gemma

    Joined:
    Jun 8, 2016
    Messages:
    1,880
    Likes Received:
    1,514
    Very true! I know I wasn't this into it when we first built the pond, I got more and more involved, and selective in choosing the fish with time
    .... I'm gonna miss my fish when the top of the pond freezes, and I don't see them for months! smcrying.gif
     
    Gemma, Oct 19, 2017
    #19
    j.w likes this.
  20. Jbad87

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    29,984
    Likes Received:
    13,271
    Location:
    Axton virginia
    Reason I don't like goldfish they breed to much
     
    sissy, Oct 19, 2017
    #20
    Gemma likes this.
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.