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#1
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Advice building a new pond please
Hello all,
I tried to download the latest 3000 messages to enable me to lurk a bit, but not many turned up, so here I go: We have an ugly area of solid concrete in our back garden which used to be the base of dog kennels and runs. We would like to build a fish pond on top of it. Our idea is to use breeze blocks (18 inches x 9 inches) three high (circa 28 inches high in total) and 14 foot x 11 foot. We then thought of rendering then painting the outside of the breeze blocks, leave the inside of the breeze blocks au natural and bung in a big liner. Then I thought of the weight of all that water! Will the breeze blocks remain standing or would the whole lot collapse once filled up with water (or worse still, once stocked with fish)! If anybody has any experience they could share, or head me in the direction of a useful site on this subject, I would be most grateful. Regards, -- Peter |
#2
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Advice building a new pond please
Breeze blocks????????? I have no idea what they are. Concrete blocks
(8x8x16) three high with steel rebar yes,but you should drill into the old slab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight. That would be my plan, Hank "Peter" ] wrote in message news:SFip7pEwn51+EwbM@nospamwantedherethankyouvery much.com... Hello all, I tried to download the latest 3000 messages to enable me to lurk a bit, but not many turned up, so here I go: We have an ugly area of solid concrete in our back garden which used to be the base of dog kennels and runs. We would like to build a fish pond on top of it. Our idea is to use breeze blocks (18 inches x 9 inches) three high (circa 28 inches high in total) and 14 foot x 11 foot. We then thought of rendering then painting the outside of the breeze blocks, leave the inside of the breeze blocks au natural and bung in a big liner. Then I thought of the weight of all that water! Will the breeze blocks remain standing or would the whole lot collapse once filled up with water (or worse still, once stocked with fish)! If anybody has any experience they could share, or head me in the direction of a useful site on this subject, I would be most grateful. Regards, -- Peter |
#3
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Advice building a new pond please
Hello Hank Pagel,
You wrote: Breeze blocks????????? I have no idea what they are. Concrete blocks (8x8x16) three high with steel rebar yes,but you should drill into the old slab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight. That would be my plan, Hank Sorry, Breeze Blocks is probably the wrong description, they are also called concrete blocks over here (solid). Is it really important to drill into the concrete base and why please? Regards, -- Peter |
#4
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Advice building a new pond please
Concrete blocks(8x8x16) three high with steel rebar yes,but you should drill
into the oldslab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight.That would be my plan, I agree....you NEED rebar. I don't think it absolutely necessary to drill into the base...but it would be better to do it. I think the sand inside is a good idea to cushion the bottom of the liner, especially where the block meets the bottom base. I assume you will then line it, and put more blocks on the top of liner to hold it in place.....Jerri http://www.fringeweb.com/Ponds/JerrisPond |
#5
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Advice building a new pond please
Hello Jerrispond,
You wrote: Concrete blocks(8x8x16) three high with steel rebar yes,but you should drill into the oldslab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight.That would be my plan, I agree....you NEED rebar. What is rebar please? -- Peter |
#6
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Advice building a new pond please
What is rebar please? metal bars about as big around as your finger, used to reinforce concrete. Buy at the lumber or hardware store. They come in lenghts of a few feet to over 10 feet. Jerri http://www.fringeweb.com/Ponds/JerrisPond |
#7
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Advice building a new pond please
Peter, rebar is steel rod that you put into concrete footings and is
available at most building centers. (reinforcement bar) As for the drilling into the old slab. Mortar does not adhere well to old concrete. Drilling holes and putting rebar in the holes through the first row of block will keep the weight of the water from pushing out the wall. Also the cove of sand at the base displaces much of the weight. This is also recommended for swimming pools and is why dams are thicker at the bottom. "Peter" ] wrote in message news:kxAkWpD0hM2+EwXw@nospamwantedherethankyouvery much.com... Hello Jerrispond, You wrote: Concrete blocks(8x8x16) three high with steel rebar yes,but you should drill into the oldslab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight.That would be my plan, I agree....you NEED rebar. What is rebar please? -- Peter |
#8
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Advice building a new pond please
Thanks Hank & Jerri,
All is becoming more clear now :-) -- Peter |
#9
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Advice building a new pond please
"Jerrispond" wrote in message ... Concrete blocks(8x8x16) three high with steel rebar yes,but you should drill into the oldslab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight.That would be my plan, I agree....you NEED rebar. I don't think it absolutely necessary to drill into the base...but it would be better to do it. I think the sand inside is a good idea to cushion the bottom of the liner, especially where the block meets the bottom base. I assume you will then line it, and put more blocks on the top of liner to hold it in place.....Jerri My greenhouse pond has breeze blocks 2 high with cement joining them as usuall. This was laid ontop of solid earth! with just a bit of cement to act as a kind of footings! This all makes a big rectangle. There is a pond liner on the inside to keep the water in. There are no pins or things stuck in the ground. But...... The greenhouse is screwed down to the breeze blocks with six screws. If I did it againg then I may reinforce it. If you do build it then if you have your rectangle get the liner and put it in. Buy some wood and screw it to the liner and through to the blocks. A kind of edgeing. You could also try stone. -- SEE YER.. IAN P. GARDNER SOUTH ENGLAND ISLE OF WIGHT. www.gardner44.freeserve.co.uk |
#10
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Advice building a new pond please
Remember to use a heater if there is any significant surface icing in the
winter as the water freezing will swell and exert pressure on the sidewalls. "IAN GARDNER" wrote in message ... "Jerrispond" wrote in message ... Concrete blocks(8x8x16) three high with steel rebar yes,but you should drill into the oldslab because it won't bond. Also a 6 inch cove sand around the inside before the liner goes in would support some of the weight.That would be my plan, I agree....you NEED rebar. I don't think it absolutely necessary to drill into the base...but it would be better to do it. I think the sand inside is a good idea to cushion the bottom of the liner, especially where the block meets the bottom base. I assume you will then line it, and put more blocks on the top of liner to hold it in place.....Jerri My greenhouse pond has breeze blocks 2 high with cement joining them as usuall. This was laid ontop of solid earth! with just a bit of cement to act as a kind of footings! This all makes a big rectangle. There is a pond liner on the inside to keep the water in. There are no pins or things stuck in the ground. But...... The greenhouse is screwed down to the breeze blocks with six screws. If I did it againg then I may reinforce it. If you do build it then if you have your rectangle get the liner and put it in. Buy some wood and screw it to the liner and through to the blocks. A kind of edgeing. You could also try stone. -- SEE YER.. IAN P. GARDNER SOUTH ENGLAND ISLE OF WIGHT. www.gardner44.freeserve.co.uk |
#11
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Advice building a new pond please
Peter wrote:
Hello all, Our idea is to use breeze blocks (18 inches x 9 inches) three high (circa 28 inches high in total) and 14 foot x 11 foot. We then thought of rendering then painting the outside of the breeze blocks, leave the inside of the breeze blocks au natural and bung in a big liner. At that height I'd be tempted to line the inside with 1" polystyrene foam sheet, which will both delay freezing and act as a cushion if the pond does freeze over, relieving some of the pressure on the walls. And use plenty of wall ties during building. |
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