My thought was that with a central wheelbase going over the pool, you would be able to use the same cover you have today. You should be able to lift the wheelbase and place it over the pool before pulling over the cover. I would spontaneously think a U-beam would be the best.
It absolutely shouldn't be there when you are swimming. The neighbors need never see it
…but if price is not an issue, it can certainly be solved with a stainless steel beam.
Here is a beam about one-third of what you need:
[image]
Lifting 87 kilos off and on every time the pool is to be used is unfortunately not realistic. Then the beam would have to be about 420 cm long, which would be closer to 200 kg.
But the beam that I mean for you to lay over the pool can be a rather slender beam. It will bend like a banana (if you take a slender one) but it will serve as a track for the side to slide over the pool edge.
But of course much more elegant to replace one short side with a steel beam.
No worries, I agree that everything should be solved with the app, but if you can put 30k on it, you'll reach the goal.
Forget about rostfri... I read somewhere that steel rusts at 0.1mm per year. Paint it with rust protection and clad the outside in wood.
Use some common beam like HEA or IPE.
I've got a dimension of 250 mm high needed for the HEA beam. And the weight was insane! It must be lifted in with a crane truck. Then I'll likely need to rebuild the foundations and reinforce the terrace otherwise. Also, replace my motor that handles 3 tons. (Now I'll probably have to change the entire frame around to rostfritt.
I had contact with, among others, Montano.se on that matter. But honestly, it doesn't feel like any suppliers are completely sure about what the stiffness will be. They are good at selling.
Lifting 87 kilos on and off every time the pool is to be used is unfortunately not realistic. Then the beam in such a case must be about 420 cm long, which will be closer to 200 kg.
Motorized beam that lifts from a recess in the pool to the right height? But the easiest solution must still be transverse beams on the roof that glide on wheels on the pool's short sides.
If you want to follow the beam track and keep deflection to a minimum with a somewhat sleek construction, as mentioned, an elevated beam is an option. I have no idea what such a beam would cost… it might open up for stainless steel if you can get a blacksmith to weld one together with a reasonable amount of material. Rolling a standard beam to the right curvature is probably not an option unless you own a shipyard or something.
If you can calculate business economics, you can calculate beam bending too . It's the load Q and the moment of inertia I that you need to work with in the formula. Q is your estimated weight that rests on the beam (half the pool roof) + the beam's own weight. And I is chosen from tables or calculated with the link I sent if it's a custom-made beam.
But the beam I'm suggesting you place over the pool can be a rather slim beam. It will bend like a banana (if you choose a slim one), but it will serve as a track for the side to roll over the pool edge.
However, it's certainly much more elegant to replace one of the short sides with a steel beam.
The short sides today don’t sway. They are 420 cm and are supported by 3 double wheels each. It's the long sides that are the damn problem. So after considering "stainless steel" or maybe corten again around the entire pool edge/frame by placing a type 250 cm beam in each corner between the short and long side and a corresponding beam between the long sides in the middle, I imagine without really knowing... that the stiffness would be good! If, for example, I use 4mm corten plate to create the dimensions, say a 100*45 rectangular beam.
What do you think about that? Can anyone help me calculate how much such a beam would withstand without bending down?
The short sides today do not sway. They are 420 cm and are supported by 3 double wheels each. It is the long sides that are the damn problem. So after considering "stainless steel" or maybe corten again around the entire edge/pool frame by placing a type 250 cm beam in each corner between the short and long sides and a corresponding beam between the long sides in the middle, then I imagine without knowing..... that the rigidity would be good! If I use, for example, 4mm corten plate to create the dimensions, say a 100*45 rectangular beam.
What do you think about that? Can someone help me calculate how much such a beam would be able to handle without bending down?
I don't quite understand your description, can you make a sketch?
If you want to use the beam track and keep deflection to a minimum with a somewhat sleek construction, as mentioned, an elevated beam is an option. I have no idea what such a thing costs... it might open the possibility for stainless steel if you can get a blacksmith to weld one together with a reasonable amount of material. Rolling a standard beam to the right curvature is probably not an option unless you own a shipyard or something.
[image]
If you can calculate business economics, you can calculate beam bending too . It's the load Q and the moment of inertia I you need to work with in the formula. Q is your estimated weight resting on the beam (half the pool cover) + the beam's own weight. And I is selected from tables or calculated with the link I sent if it's a DIY beam.
You might have already found it, but here you can find, for example, inertias for common cross-sections:
[link]
Super!!! Thanks! Business economics is so far from this. Partly because I don't know the technical terms in metals like yield point, stiffness, etc, etc. But now I might have a chance to solve it... You don't have the calculation in Excel, do you?
I'm not quite following your description, could you make a sketch?
I have understood that the problem is when 1 should pass over 2. Then the support beam (1) hits the edge of the pool due to the span which is just over 8m.
I have perceived that the problem is when 1 is going to go over 2. Then the carrying beam (1) hits the edge of the pool due to the span which is just over 8m. [image]
Yes, me too, it was the solution in #37 that I didn't quite understand. It sounded like something other than just reinforcing the long side's carrying beam.
I have understood that the problem is when 1 is supposed to go over 2. Then the bearer (1) hits the pool edge due to the span which is over 8m. [image]
Yes, that's right! Then it also sags in the middle, which makes it sag even more the further it is pushed out over the pool.
Now let's see... I've made a number of attempts at "drawings"... But here are the two alternatives that I might believe in but need verified by calculating the construction.
My idea is then to replace the frames with stainless steel or steel, welded as a rectangular beam, with a thickness of 3-4 mm. (A bit concerned about the weight...) The dashed lines are the same metal but welded to the frame to lift up/make the long beam that goes over the pool rigid. It is only the beam that goes over the pool that doesn't have support from wheels & rails.
When, for example, Aqvisdeck.se builds these, they always divide them into two 4-meter sections that slide out over the short sides. They build in aluminum.
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