How to building a water garden – Outdoor Concrete Plywood
The appearance of pre-formed ponds and butyl liners tend to make the construction of the basin-specific solutions that are less common, but if you want a formal pond, does not consider the use of concrete, because the material, with good strong durable, waterproof finish. Creating a concrete pool is a tough business, and requires special knowledge to create much more than with a boat or swimming pool pre-formed. Remember also that once built, the concrete pool will be difficult to remove if you decide that you do not like or feel in the wrong place.
PLANNING
Check the ground where you want to put a swimming pool is really stable. If not, you may have to sleep in the pool layer of compacted hardcore. For an informal ponds, deep part of the basin, where fish and water lilies should be rectangular or square, and should have access to the tilt angle direction about 20 degrees to reduce the pressure as the ice expands in the winter, which is the cause of the crack-General. The remaining pool, including the edge of the landing may be the form you want, but at least an additional 15 cm (6 inches) to depth and to all parties is the minimum thickness of concrete that will be needed to build a strong pool. In a formal pond, where it is more likely that you want to party, to be completely vertical, you must be willing to take concrete is about 20 cm (8 inches) thick.
More swimming pool, the more important is that you include a heavy steel wire mesh reinforcing or redundant, and it is very important that the concrete completely fills the hole and that there is no space around the net. Very large pond will require strengthening of steel rods.
The most problematic part of a large building that formal, concrete pool is the need for formwork, which is used to hold concrete in place during the set. No shuttering, there is a risk that the concrete will slide down the wall, making them thinner at the top, but convex at the bottom. Decking that windows made of wood topless and smaller in all dimensions with the thickness of concrete, built into the pool when the foundation was completed.
Pool building
Make the bottom of the pool, having put the first layer of concrete poured on top hardcore. Turn on the grid between two layers of concrete, and leave to set. Decking should be constructed on so well in fact, tough and easy to disassemble. Assembling formwork and mesh inserts on the side, and then add the concrete. When dry remove the concrete formwork and coat sides and bottom of the pool with its own waterproof sealant.
If the mixture is not so, the share of cement, sand and aggregate properly or if the material is mixed together before water is added, the pool will leak. Cracks can also occur if the foundation to subside.
Concrete is easy to operate, and would have been made in the correct sequence. Its main drawback is that it should be fully prepared so that the concrete used on the day of delivery. You also need to think about access and how you will carry the goods of specific whence he was sent to the location of the pool. If you decide to create your own concrete, 
and can not do this if you build a small pond, it is important that you get the right proportions. Use a good quality of cement, sand and clean builders or serious abrupt ballast (aggregates) in the proportions 1:02:03 by volume (not weight). Do not add too much water, leaving puddles of water in the mix: your goal is to get a smooth consistency. Add waterproofing agent, which will increase the strength and impermeability of concrete. Using the mixer, which can be rented for a day, will provide concrete mixes and will be applicable to you.
Lily concrete, unfortunately, are prone to cracking. Even if you do not build your own pond with concrete, you can derive a new pond in the park, and you must find your pool leak, least of all short-term impact of errors.
Once you have found a loophole to use thin stone chisel and club hammer to expand it. Press slowly and gently. Clear all debris with a stiff brush. Mix the mortar and use a shovel to fill the cracks. Allow to dry for at least 48 hours. Apply a layer of sealant pool exclusively for loopholes to prevent the leakage of toxins into the water. Patrick J. Smith
