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Swimming pools' length tolerance
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 2008-07-05 9:51 AM |
Expert  1027   Zürich, Switzerland |  Subject: Swimming pools' length toleranceI wonder if you notice differences in your lap times when you move from one pool to another one. I train usually always in the same pool but sometimes I go in a 50meters and in another 25meters pool. My 100meters repeats are very different: in my everyday pool I have around 1'50"/100m while in the other 25m I have 1'42"/100m and in the 50meters around 1'58"/100m.
Is there a tolerance when engineers design a swimming pool like football pitches? It should not be because of the world records... I searched over internet and I found some pools specifying the length: some are 51.20 meters, some 50.0, etc... |
| 2008-07-05 10:21 AM in reply to: #1509158 |
Elite 3020 Bay Area, CA | Subject: RE: Swimming pools' length tolerance Are you POSITIVE that 25 m pool is not really 25 YARDS? It might be the push off the wall, but 16 seconds seems like a big difference to me. |
| 2008-07-05 11:00 AM in reply to: #1509158 |
Expert 784  Computerland | Subject: RE: Swimming pools' length tolerance Swimming pool lengths definately have a lot to do with your lap times. I have swam swim meets in a 25 yard pool, a 25 meter pool, and a 50 meter pool. In each pool, my swimming times have been different. A good example of this is that in a swim meet in a 25 yard pool, my best 100 free time is 1:21. In a 50 meter pool, my best 100 free time is 1:37. Big difference! Edited by amyro1234 2008-07-05 11:01 AM |
| 2008-07-05 11:08 AM in reply to: #1509244 |
Champion 9060 Charlottesville, Virginia | Subject: RE: Swimming pools' length tolerance 1 meter = 1.0936133 Yards 25 Meters = 27.3403325 Yards Really not much difference there. I swear the pool I swim in every day is longer than any other pool I have swam in. I went to a local HS the other day and swam and was 10 seconds faster per 50 and both advertised as the same length. |
| 2008-07-05 11:10 AM in reply to: #1509158 |
Champion 23360 Taser-World | Subject: RE: Swimming pools' length tolerance I see that you're not in the USA. Here, we have some pool that are yards, and others that are meters. So that would account for differences in time. However, I'd assume that in Europe, they'd use meters (not yards). If you're sure that all 3 of your pools are in meters, some of the time differences might be due to the wall (or lack thereof). Depending upon your technique, the turn might slow you down, or pushing off the wall might increase your speed.... As for pool length "requirements," yes, if records can be set, the pool must be a specific length. ... But if the pool you're swimming in didn't care about "records," then perhaps they might have just built it so the length fit their property or allotted space? Can you ask someone who works at the facility? They might be able to tell you the actual length of the pool. Edited by D001 2008-07-05 11:11 AM |
| 2008-07-05 11:23 AM in reply to: #1509250 |
Champion 23360 Taser-World | Subject: RE: Swimming pools' length tolerance dalessit - 2008-07-05 12:08 PM 1 meter = 1.0936133 Yards 25 Meters = 27.3403325 Yards Really not much difference there..... Oh, I beg to differ.... There may not be a huge time or effort difference on a SINGLE lap, but repeat those laps over and over... and the time difference, as well as the amount of effort that you expend, will become noticeably different! After 20 laps, for example: 25 yard pool --> 500 yards 25 meter pool --> 500 meters = 546.8 yards So swimming 20 laps in a 25m pool is getting pretty close to doing 22 laps in a 25yard pool. And to swim one mile, you'd have to do a far different number of laps: 25 yard pool --> 70.4 laps 25 meter pool --> 64.4 laps Edited by D001 2008-07-05 11:24 AM |
| 2008-07-06 5:38 AM in reply to: #1509158 |
Champion 8766 Evergreen, Colorado | Subject: RE: Swimming pools' length tolerance I would bet that your 1:42 per 100 pool is yards. The other two look about right for the difference between a 25m and a 50m pool. I find that most 50m pools that are not built for serious collegiate or Olympic competition are slooooooooow. And as the above poster pointed out...if it wasn't certified for competition the pool could be a random odd size. I've heard of two pools like that. One pool didn't want to put up with holding competitions and thus made its pool deliberately a foot short. The other pool had a bulkhead that was a pain in the butt to remove so they just kept it at one side making the pool 49 meters instead of 50. |
| 2008-07-06 6:09 AM in reply to: #1509158 |
Expert 1027 Zürich, Switzerland | Subject: RE: Swimming pools' length tolerance In Europe, unless you go in UK, you hardly find a pool done in yards instead of meters. They are always 25 or 50 meters. Yesterday I spoke with an "expert" swimmer and he said that it is the water! I can't believe it! In Switzerland they do not use chlorine but a different chemical mix. In Italy, where I have better lap times on 25m, they use chlorine like in US.
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| 2008-07-06 11:55 AM in reply to: #1509158 |
Veteran 184 San Diego, CA | Subject: RE: Swimming pools' length tolerance Yeap... its not only the meters / yards thing, or the number of turns. The chemical makeup of the water has a small effect, but also the water temp. The really fast competitve pools are always COLD. Cheers |
| 2008-07-06 11:59 AM in reply to: #1510264 |
Expert 1027 Zürich, Switzerland | Subject: RE: Swimming pools' length tolerance griepsma - 2008-07-05 6:55 PM Yeap... its not only the meters / yards thing, or the number of turns. The chemical makeup of the water has a small effect, but also the water temp. The really fast competitve pools are always COLD. Cheers Good to know but in my case the fastest is in Italy and it is very WARM! |
| 2008-07-06 12:11 PM in reply to: #1509158 |
Elite 4344 | Subject: RE: Swimming pools' length tolerance For competitve swimmers, the difference between 100 meters in a 50 meter pool and 25 meter pool is typically 1.8 seconds with the short course being faster. Turns are faster than swimming. Here's a site that allows you to convert different strokes and distances. http://www.swimmingworldmagazine.com/results/conversions.asp
TW |
| 2008-07-06 3:57 PM in reply to: #1509158 |
Master 2491 | Subject: RE: Swimming pools' length tolerance The local pool has long course hourse in the summer, which are 50y instead of 25. I was surprised to find my splits slower, as I thought the rhythm over the stretch would outweight the stopping and starting, especially since I don't flip-turn.  |
| 2008-07-06 4:22 PM in reply to: #1509158 |
Pro 4343 Olney, MD | Subject: RE: Swimming pools' length tolerance I swam last week at a county pool different from where I always swim. My times and my stroke counts were about 20% greater. Both pools claim to be 25 meters. Obviously they can't both be, but I don't know what's what. |
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