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Surveying A Kidney Swimming Pool.
by Francis Lowe(4)
http://www.poolwarehouseuk.com/
To get the best use from pool covers, it is essential that they fit well, so they must be measured accurately. A correctly fitting cover will reduce your pool chemicals usage and time commitment to cleaning. Ill fitting covers will also suffer wear and tear much more quickly and have to be replaced sooner.
Simple shapes such as a rectangle are easy to measure, but more complex shapes, for example a kidney, require some expertise. A variety of different methods exist, but this is our preferred method and has produced well fitting covers time after time. We recommend the Triangulation Method, where a number of points are marked around the edge and distances recorded to them from two other points A and B. These points, when put together, will give us an accurate plan.
The first step is to mark, using chalk, all the points that we will measure to. Start with 1, and then mark points clockwise around the edge approximately 18" apart, finishing just before your original point 1. On reasonably straight stretches they can be further apart, but on curved areas they may need to be closer. On most pools you are likely to have marked about 30 to 35 points when you come back to the start.
The next step is to mark the A and B reference points. Ideally these should be to one side of the pool, approximately 10 feet from the edge, and slightly wider apart than the pool is long. Mark one as point A, and the other as point B.
Now, starting from point A record the distances from A to each point around the pool starting with 1, and marking them down as A1, A2, A3, etc. Repeat this process using point B. It is essential that the end of the tape is held securely. Any movement of the end of the tape will cause inaccuracies in the survey. It is possible that you will need someone to hold the end of the tape, or possibly secure with a stake or something similar. Another thing to look out for is making sure that the tape is held tight and straight at all times and does not become bent around any obstructions such as planters or diving boards.
If there are any obstructions that the cover manufacturer needs to be made aware of, then these should also be recorded on the sheet, again with measurements from A and B and a note to say what they are. For example if a ladder is fixed, the position of all the uprights need to be recorded in order for the manufacturer to put appropriate slits in the cover.
Finally, on the sheet on which you have recorded all your data, draw a rough sketch and show roughly where points A and B are in relation to the pool.
Francis Lowe is a leading expert in swimming pool maintenance with a huge wealth of experience developed from 40 years in the industry.
To see a full range of pool equipment, including swimming pool covers and solar covers please see the website of specialist supplier poolwarehouseuk.com
Article submitted Wednesday, November 30, 2011 & read 14 times.
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