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Why are the roofs in swimming pools so high ?
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IanR




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PostPosted: Fri Dec 04, 2009 9:19 pm    Post subject: Why are the roofs in swimming pools so high ? Reply with quote

My son asked me this tonight. I waffled on about chlorine but don't know. Anyone out there who does ?
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AndyS..




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PostPosted: Fri Dec 04, 2009 9:30 pm    Post subject: Reply with quote

I would guess it's to make a volume of air above the pool sufficiently large to hold heat and not be affected by the comings and going of people or doors opening. So the pool heats the air which in turn creates a large body of warmth that retains heat better. Seeing as large things hold heat better than small things. Which is why you get polar bears and not polar mice.

Of course, that's a total guess. Very Happy
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clv101




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PostPosted: Fri Dec 04, 2009 9:35 pm    Post subject: Reply with quote

The specific heat capacity of air is way lower then water. If the room is 10m high, the air holds the same amount of heat as the top 1cm of water.
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mitten.




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PostPosted: Fri Dec 04, 2009 9:38 pm    Post subject: Reply with quote

AndyS.. wrote:
I would guess it's to make a volume of air above the pool sufficiently large to hold heat and not be affected by the comings and going of people or doors opening. So the pool heats the air which in turn creates a large body of warmth that retains heat better. Seeing as large things hold heat better than small things. Which is why you get polar bears and not polar mice.

Of course, that's a total guess. Very Happy


what about an arctic hare then ?
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markie r




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PostPosted: Fri Dec 04, 2009 9:51 pm    Post subject: Reply with quote

its so the diving board and lifegurads' chair fits.
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clv101




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PostPosted: Fri Dec 04, 2009 10:10 pm    Post subject: Reply with quote

markie r wrote:
its so the diving board and lifegurads' chair fits.

Best answer so far!
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JollyRoger




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PostPosted: Fri Dec 04, 2009 11:00 pm    Post subject: Reply with quote

Seating
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Was




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PostPosted: Fri Dec 04, 2009 11:04 pm    Post subject: Reply with quote

Yep seating no point in being eye level to watch swimmers, the angle down enables you to see the bottom of the pool and the swimmer in totality

Again another guess
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savaloy




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PostPosted: Fri Dec 04, 2009 11:08 pm    Post subject: Reply with quote

A third for seating/spectators.
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mrchopsaloty




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PostPosted: Fri Dec 04, 2009 11:30 pm    Post subject: Reply with quote

Various reasons.

All the best swimmers are tall.

You don't want splashes to hit the ceiling, get it wet and after a while have it collapse into the pool. This would mean you would have to put more water in.
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Poet




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PostPosted: Sat Dec 05, 2009 8:09 am    Post subject: Reply with quote

Seating? So why are pools without seating built with tall roofs, too?
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savaloy




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PostPosted: Sat Dec 05, 2009 8:40 am    Post subject: Reply with quote

Poet wrote:
Seating? So why are pools without seating built with tall roofs, too?


they clearly ran out of money.
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Rob_T




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PostPosted: Sat Dec 05, 2009 8:40 am    Post subject: Reply with quote

its coz giraffe's like to go swimming at night when the pool is closed to the public. but they dont like getting their ears wet so they swim breaststoke like old ladies. heads up stylee.
of course.
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coastal controller




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PostPosted: Sat Dec 05, 2009 9:37 am    Post subject: Reply with quote

They're not. There is one in North Yorks (Thirsk or somewhere iirc) with a really low roof. I'm guessing that it's a combination of all the above, plus it feels so much nicer swimming in a pool with a high roof.
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mocev




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PostPosted: Sat Dec 05, 2009 11:49 am    Post subject: Reply with quote

I'd say it was to avoid high concentrations of condensation and/or chlorides.
Chlorides are extremely corrosive. Odds on, there are stainless steel handrails at your pool and if you take a close look, you'll see lots of brown rust spots all over them. This is chlorine induced corrosion. If stainless has been used in the roof supports, it's unlikely they're kept clean and subjected to regular maintenance. The brown spots will lead to pitting and eventually, structural failure. (This happened in Switzerland a few years ago. The rood collapsed - killing over 10 people).
Excessive condensation will form mildew initally, but of course will lead to corrosion in carbon steel - and can weaken concrete and most other materials..
The pool at my gym is about 5 years old. The ceiling over the swimming pool is very low. Although the pool water isn't too hot, it feels like walking into the sauna when you leave the changing room. It's quite humid.
The ceiling is showing signs of damage from condensation.

Better start swimming with a hard-hat on....
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