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You said it - CRAZY!! I like the pool net idea. I grew up with a pool and have been swimming since I can ever remember - it made me a WAY better swimmer as a result.
The wife approved this?? Abort.......Abort........Abort |
My cavalier view - I would not be that concerned about earthquake damage, because it is not an inhabited structure. The odds of people standing on the deck during a big earthquake are very low, the odds of people being under the deck at that time are pretty nil. And after the big earthquake, a damaged or collapsed pool deck will probably be the least of Wayne's worries.
To me, the main thing is for the structure to hold up to people running, dancing, jumping, partying, etc. If needed, seems you could have steel brackets made to support the ends of the beams on the lip of the pool. Sort of like big joist hangers, in concept. That way, the downward force would be distributed to the concrete lip, not all on the posts/footings. Also stabilizes deck horizontally. Probably something you could do after the deck is built, if necessary. |
We went the pool net route when our daughter was little. Sure beat dividing up our small backyard with a fence. Our pool is an odd shape, the deck has different elevations, and there's a rock waterfall. The net works fine with all that.
Fences can be scaled and gates can be left unlatched. If the net is on the pool there's no way a kid is getting in there. http://www.katchakid.com/ |
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Bill: I used one of those nets on a pool at a previous home. I had great luck with it and it was surprisingly easy to deploy and remove! Best, |
You could have put some cooling coils in it and had a place to play hockey year round.;)
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How about this?
Line the empty pool with a waterproof membrane and add an independent sump pump in the deep end. Now fill the pool with gravel flush to the surrounding grade. Now build your deck over the gravel. You won't have the structural concerns of a suspended deck and if you ever want the pool back you can just remove the gravel, sump and membrane. Plus. It's NEVER a bad idea to teach your kids to swim asap. You can make your home safe but you never know when your going to be at a freinds house or birthday party or whatever. It's just a good thing to do. |
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The deck looks really nice, but I think I would have preferred the flexibility of a net. Who knows what condition an empty pool will be after 3+ years of being empty, especially in a seismic zone. |
Just add a bilge pump like a boat. You can set the water level on most of them. Have it pump to a grass area.
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Pool net from a previous home, about 5 years ago:
http://forums.pelicanparts.com/uploa...1214327982.jpg |
I agree with the comments above, I think this direction is a mistake. Furthermore, I'd be willing to bet that the pool will need significant maintenance and repair when you decide to re-open. You have empty water pipes with standing (stagnant) water in them. A pump that isn't pumping. A pool designed to be full of water (and pressue) standing empty. Then large point loads on a relatively thin concrete surface not designed to carry a load. It's a very creative project, but misguided.
To continue to beat the dead horse, why? Fence or safety cover is just as effective, and still allows you to enjoy that very nice pool. Furthermore, any kid old enough to be in your backyard unsupervised should know how to swim. As my son's swimming teacher liked to say, swimming is the only sport that could save your life. |
I would grout the cement supports to secure them and to distribute the load.
But, has anyone here seen Wayne do something without thinking it through? And some of your 'failure scenarios' are somewhat unlikely. A lot less likely than a one year old drowning in a pool, even one covered by a net. Personally, it's not the way I would go, obviously from the title he knows it's 'a bit radical'. |
I enrolled my oldest daughter into swimming classes when she was an infant(under one year old). The act of swimming is a reflex action more than a learned action. And for some reason babies do not swallow when their face is submerged. It is only when they panic that these natural instincts are abandoned and tragedy occures.
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I knew someone that did this, he developed a mold issue on the porous walls of the pool and inside the pipes, made his whole family sick and required demolition of the pool. He was going to have it cleaned and filled, however the deck supports had cracked the floor and the repair was going to be costly. Pools are only really usable for two months or so here in Colorado so he thought, what the heck? I'll just build over it.
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I think there is a company that makes custom clear floors that freespan the width of pools. The big thing now is to have a party outside and use the pool as a dance floor.
In this project I would consider biting the bullet and drill into the pool sides and bottom to properly install stress bearing anchor points. It's completely possible to patch these later on when you want to use the pool again. By then you'll need a new pump, filter, pool sweep, etc anyway to press the pool back into service. |
I would think an earthquake large enough to topple this structure would do damage to everything else, too.
How many years do you want this deck in place, Wayne? KT |
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http://www.cpsc.gov/library/foia/foia07/os/poolsub2007.pdf |
Well Wayne, clearly you have thought this through. Now tell us, what have you got in mind for the BBQ? Will it be a pit or free standing? Gas or brickette? And what time does the party start?
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2x8's, hmmm, I used 2x12's on my deck. We choose Brazillian Redwood for the decking material, so it is pretty heavy and dense wood. After everything was said and done, with a deck that is 14 feet by 36 feet, I was at about $10,000 in supplies.
I would have left it empty and just invited Tony Hawk to come over and teach your kids to skate. See then, when they are in their early teens, you can retire. You seem pretty passionate about this whole thing (probably due to the amount of work it entails), so I hope it works out for you. I am assuming you will have a building inpsector come over and inspect it after you are done, correct? Bill |
Would pulling out those rocks and pouring concrete to level it out and then using 12X12 beams for joists overrunning the sides of the pool by a couple of feet on each end worked out?
You really would not need any support from below depending on the span and distance from the joist to joist. I know flush to the concrete would look better, but this being temporary and all. Anyways, just a thought and good luck. |
Sorta like a thesis defense around here, eh Wayne?
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They're your kids and you should do what you think is in the best interests. Others may disagree, but so what?
We have used swim suits with built-in, coast guard approved, flotation whenever our kids were near the water (pools, lakes, ocean, etc..) and that's worked well. The might go under, but they pop right back up like a bobber. Good luck, hope it works out for you. |
I could've saved you tons of time/money if you would've asked!
Find out who supplies McDonald's with these and fill 'er up: http://www.basinpark.com/kids/photos/ballpit.jpg P.S. - This would've been a perfect project for Milt. Could've paid him in parts. Those piers need to be level and you need more support. Consult a span table for 2 x 10's at those lengths. http://www.mcvicker.com/resguide/page013b.htm |
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Goes to show what you miss when you only buy on-line. |
Wayne, I applaud your efforts. Thats A LOT of work for a one man crew. that would is very heavy. I built something very similiar to what you are building for my Eagle Project. My pergola just wasn't in a swimming pool. The only thing that worry me at this time are the 4 posts to support each end at this time. I read that you are going to strengthen the crap out of this thing which is good. I am sure your MIT education won't fail you now.
Diagonal bracing is your friends. Make as many triangles as you can. And if you get a picture of your truck ontop of this thing...your cajones are much bigger then mine sir. |
i also worry about the west end. only 4 posts? each post is good for something like 450psi, assuming doug fir. i would calc out how heavy it is full of people, standing shoulder to shoulder, doing the chicken dance. then brace from there. i dont like the skewed conc, bases. at that point, a large 4x12 would distribute the load better. i like everything plumb. the project looks great. what is the post spacing at the east end? 8 feet?
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A BBQ you could see form outer space... how cool would that be? |
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Next best thing to a petri dish. They are basically giant germ pits. |
Only two real issues I see is the stress on the bottom of the pool (I have no idea how thick the concrete is) and the outer stress against the sides of the pool. I think only a structural engineer could really answer those two issues. I don't see the structure collapsing, more an issue of the structural integrity of the pool should Wayne ever decide to recommission it.
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I think Wayne had it all figured out and wanted to see if we could come up with anything he didn't think of. Nice job, damn well done, and by yourself. I would have sealed it all up and made a putting green out of it. I don't think he can get a truck in there but I bet it would hold it when he's done.
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I'm envisioning a way that hole in the ground could be transformed into a stasis chamber for the 959. . .
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