[Closed] CAD Cheapskates - Swimming Pool Volume

I think sketchup will do this but probably only the pro version if you are importing a cad file?

Might be just as quick or quicker to just use Simpsons rule if you're not familiar with CAD. Should give a fairly good estimate.

Fusion 360 will automatically calculate the volume of a 3D extrusion. It’s a proper, full CAD/CAM package but there’s a free licence for personal use. There’s also a reasonably steep learning curve if this is just a one-off job! Feel free to whiz me over the data if you like & I’ll have a look at it later.

Do you have the 2d Topo as a dwg? Assume 2d Topo in that xy has the coords, but z is just text next to the point?

Bloody annoying to get a Topo like that... Olympic 2012 park grumble grumble..

Anyway someone wrote a little routine to add the z text to the point. Called text2point.lsp or something. Then create a surface do Calc's in autocad.. or

if you get old free sketchup you can import the dwg and play there.

Isn’t it just a truncated conic section? If you know the surface area and the regular slope, then an average depth will suffice. Print it out, cut around and weigh compared to a 10x10 cm reference piece, then multiply by the average depth.

CAD, smad, You can probably print out the surface area from google maps with a reference length.

@zilog6128 that is an amazing offer. I currently have the topo in GIS form with heights as point data. It’s in QGIS and I think I can export as DWG. I’m half dead from a 10 mile run but if still ok will pm you later.

Get a 1 litre jug and count how many it takes to empty the pool.

Assume 2d Topo in that xy has the coords, but z is just text next to the point?

Haha. Civil 3D? Does my nut in too. We spec our suveys pretty watertightly to try and eliminate it. Amazing how many surveyors seem to not understand 3D

I can also do this for you if needed.

perchypanther
Free Member

Get a 1 litre jug and count how many it takes to empty the pool

Won’t work as I need to know gallons 😀

Get a 1 litre jug and count how many it takes to empty the pool

Won’t work - he won’t be able to scoop up a full jug once the water level gets low. What he needs to do is empty it first and count how many jug fulls it takes to fill it again.

If he needs gallons, use a pint glass and divide by 8

HTH

Get a gallon bucket....

Just count every 4full jugs then a half jug

You could just go for a rough* guess?

As a highly trained construction professional that’s what I’d do.

* Measure it exactly, add 15% and tell the client that, deduct 20% and tell the subcontractors that, less retention and discount obviously. I’m not an idiot. 😉

Perchy at which point do you convert it to bricks for your calcs?

If you get stuck fire it over and I’ll model it for you when I’m in work tomorrow.

Perchy, at which point do you convert it to bricks for your calcs

As soon as I know how many pint glasses it took to empty it.

This is from my GIS package. I cannot show internal angles and cannot export as DWG only separate DXF layers. A virtual pint (followed by many real ones post lockdown) to anyone who can give me a nearly accurate volume figure in litres

5/8 of an Olympic swimming pool. That’s an SI unit isn’t it?

Ps. Are your depths correct? Looks a bit shallow....

It's a sea water pool filled by overspill of the tide the shallow end is for paddling about. The deep end can't be much deeper a the tide would not get over the wall.

Those depths are correct.

22cm at the deep end?

Would be quite tricky swimming in that, your knees would hit the floor

Ah yes units are wrong they are cm not mm, damn it QGIS stealth edit of image done but it's being cached

ok, I have had a crack at it! Caveat: not a CAD professional, self taught etc so could have made some kind of balls-up 🙂 Will double check the dimensions in a bit!

[img] [/img]
1.529 million litres... does that sound plausible?

does that sound plausible?

Fairly I'd say. 2.5 million in an Olympic swimming pool (50m x 25m x 2m)

See. 5/8th

Thanks zilog that sounds pretty close to me.

See. 5/8th

🙂

Out of interest where is it? Basically every village on the coast of Fife used one. Mist of them are still there but in varying states of disrepair it would be ace to see them being used.

Also why do you need the volume?

If you send me the topo and you depths. I'll build you a 3D model for future work/planning etc. A nice little addition to the asset management.

joshvegas.

It's in Brixham, Devon ..you can see it live here https://shoalstonepool.com/webcam/

It is a massive challenge to keep it going as it is hammered by the sea. On Friday we were taking cores on the pool deck and found voiding underneath which is going to need sorting. I also need to get the sea wall fixed and a load of other stuff done before we open.

I need the volume as we add chlorine in the summer to keep algae down and we need to know that we have the concentration within safe levels. That's a really kind offer, if you can PM me your email address I send you links to all we have.

wow thats quite an operation! looks great though... if a little chilly. mind you its probably significantly warmer than the north sea 😀

PM sent

DavidB,

I don't use Shoalstone pool, because I live Up North (Paignton).
However, talking with friends from Brixham, I do know you are doing a great service for the community - thank you and well done!
You may have been too modest to mention the website, so I will for you: https://shoalstonepool.com/about-us/

Jingle

Thank you Jingle. I took on the role of volunteer Ops Director earlier this year and have become firmly attached to the pool. It’s pretty unique in its mechanics and an integral part of the Brixham community. Sadly covid did for us this year but we hope to open in May 2021 in better shape than ever. A glance on the webcam in daytime will show you that we have a lot to do. You can also see the dormant cruise ships hanging out in the bay 😀

I have just done a quick calculation using cad & I arrived at 1522mts3. That won't be 100% accurate though as I assumed the vertical lines were at 90° to the base line & they aren't. Very close to zilog's answer though.

For contrast this is a typical Fife pool

Here

Its a great concept, would be ace to seem more in use.