 |
|
|
|
|
|||||||||||||||||||||||||||
 |
|||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||
 |
|||||||||||||||||||||||||||||||
|
|
|
|
|
|
||
 |
|||||||
|
|||||||
 |
|||||||
|
General Frequently Asked Questions can be found here Volume is the amount of three dimensional space occupied by an object. For our purposes we deal with water and the most common question relating to volume is what is the volume of my water feature. Firstly we need to know what type of shape we are dealing with, is it a square pond, a rectangular pond, a circular pond or an uneven shape such as a kidney type shape. Then we need to know its measurements, such as length, width, depth if square or radius. Lets start with the volume of cube shapes like square or rectangular ponds. The volume a cube or cuboid is the length multiplied by the width multiplied by the depth often described as L x W x H Its best to stick to metric system using meters as it makes measurements much simpler. For example a pond 2 meters long, 4 meters wide and 0.5 meters depth has a volume of 2 x 4 x 0.5 = 4 cubic meters = 4000 litres of water. As one cubic meter has a volume of 1000 litres , then 4 cubic meters has a volume of 4 x 1000 = 4000 litres Interestingly one cubic meter of water weighs one thousand kilos so we also know the weight of water in the above example is 4000 kilograms. So one litre of water weighs one kilogram. With the above in mind we can simply calculate the volume of any cube shape. We basicaly just get the area (lenght by width) and then multiply by the depth (height) to calculate the volume. Here is another example. My rectangular pond is 2.5 meters wide, 6 meters long and 1 meter deep. Which filter do I need? Firstly we get the volume being 2.5 x 6 x 1 =15 cubic meter Then we translate this into litres by multiplying by 1000 so 15 x 1000 =15,000 litres of water. Now we know the volume of the pond we can calculate the filter requirement. Unfortunately we need to ask a few more questions to work out the correctly sized filter but nothing to strenuous. Basic question is are there fish in the pond and if so are the Koi or goldfish. The reason is we fish create waste and some more than others so to size your filter we need to have an idea of the pond fish type. At its very simplest a filter designed for 10,000 litres of water is generally designed for a pond with no fish and just a few plants, that same filter may only be suitable for a pond of 5000 litres with goldfish and 2500 with Koi. If the filter is undersized it wont be capable of cleaning the pond and providing clear water to view your fish. Don’t worry though as we have several types of filters and many can be simply upgraded to provide more cleaning potential.
Getting back to Volume, lets say we have a cylinder shape, ie a round pond. The the volume is 3.124 multiplied by the radius squared. (The radius of a circle is the distance from the side to the center). For example a pond 2 meters diameter and 1 meter deep has a volume of 3.142 multiplied by 2 multiplied by 2 multiplied by 1 (3.142 x 2 x 2 x1) = 12.568 cubic meters = 12,568 litres. Wondering where the 3.142 came into play, well that’s 22/7 or pie. Pie is the ratio of a circle's circumference to its diameter in Euclidean geometry, and has many uses in mathematics, physics, and engineering. That’s why we call this section Jargon. Its extremely useful information but we are happy to make the calculations for you. Even if you prefer the old feet and inches (known as the imperial system, and still widely used in the UK and USA) we will convert it for you and make all the right calculations to size your water feature correctly. We will deal more with irregular shapes in the future but as a rough guide the volume of a kidney shaped pond with sloping sides is calculated by imaging it as a rectangular shape, calculating the volume for this then subtracting one third. You could also just fill your pond with a hose and time how long it takes to fill. if you know it takes say 40 minutes to fill a pond and the same hose fills a 10 litre bucket in one minute then your pond is the same as 40 ten litre buckets or 40x10 =400 litres.
|
|||||||
