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Thread: Help Calculating Volume (Odd Shape)

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    Question Help Calculating Volume (Odd Shape)

    Okay I am ready to take this project on, and I am having a hard time due to sittings areas and angled corners. This pool has a circular sitting area on the shallow end with a curved bench, and another sitting area on the deep end.





    This is a schematic I made of the dimensions, I hope everyone is able to read it. Measurements written is black, circled, with "ft" inside are depths. The shallow end is 3' and the deep end is 5' with the sittings areas being 1' and 1.5' deep. The wall lengths are written in green along the sides. My thought was combining/merging some of these numbers? For instance the 2' long angled corners, should they be divided by 2 and then added to the adjoining wall lengths? For example: the deep end has a 12' long wall, so if I took 1' from each corner I could make the deep end 14' wide rather than 12' then add 1' to the 23' making that length 24' which squares off the corners. If I followed this method I would take the 20' length, and add 2', 3', and 1' of the corner for a total of 26' long. I thought about just rounding things too such as removing the deep end sitting area from the equation and just factoring that into the stairs by removing the volume consumed by the stairs themselves and making the stair corner just a 3' deep squared corner....I actually think I could use both the deep sitting area water volume added to the shallow sitting areas bench displacement and that would equal the stair displacment.



    So if I measure from the two areas circled in red, I get a total of 26' so if I build off this theory I can add 1' of that corner to make a total of 27' from the deep end to the stairs right?



    Then if I am able to just calculate the volume of this deep end sitting area @ 1' deep I can take this volume, put it aside and add it back to my squared off pool volume right??



    15,000 Gallon Heated Diamond Brite Plaster Pool
    200 Gallon Hot Springs Jetsetter Spa
    Outdoors Partial Tree Shaded Lanai
    Taylor K2006 Test + SpeedStir

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    Mod Squad mknauss's Avatar
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    Re: Help Calculating Volume (Odd Shape)

    16 x 25 x 4 = 12000 gallons.

    Good enough to start.
    6000 Gallon IG Fiberglass with integrated Spa;Pentair CCP240 Cartridge Filter with Pentair Intelliflo VS Pump and HTR250 heater. IC40 SWG. EasyTouch 4. Dolphin Active20 Robot "Roadrunner", TF 100 Test Kit w/SpeedStir!
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    Marty

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    Re: Help Calculating Volume (Odd Shape)

    Quote Originally Posted by mknauss View Post
    16 x 25 x 4 = 12000 gallons.

    Good enough to start.
    Thanks, then if I use the poolmath calculator and my test results show up slightly lower or higher I can play with dialing in the volume that way? Either rounding the gallons down or up until my test results match my predicted target?
    15,000 Gallon Heated Diamond Brite Plaster Pool
    200 Gallon Hot Springs Jetsetter Spa
    Outdoors Partial Tree Shaded Lanai
    Taylor K2006 Test + SpeedStir

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    Teald024's Avatar
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    Re: Help Calculating Volume (Odd Shape)

    Iíll guesstimate around 13,500 gallons.

    Once you start using you own chems, you can adjust the volume to closer match your test results. If you always find that you are over shooting or undershooting your predicted amounts, adjust the pool volume to compensate for that. You should be able to see a trend.



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    Mod Squad YippeeSkippy's Avatar
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    Re: Help Calculating Volume (Odd Shape)

    Everyone has you covered on the volume, but I just wanted to add that that's a nice looking pool and deck. The water looks very inviting!

    Maddie
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    PoolDummiesWV's Avatar
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    Re: Help Calculating Volume (Odd Shape)

    my thoughts exactly Maddie...whatever the size its beautiful!!
    Rob~n~Darlene, West Virginia
    Inground, 67 years old, 22K Gallon
    Stainless Steel with Concrete Bottom
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    Re: Help Calculating Volume (Odd Shape)

    I have been dosing based on 12,000G and it comes in short, responds much better to the calculator when dosed at 15,000G.

    I was able to find the old owners records at a local pool store, and they had it calculated @ 13,500 so Teald024 takes the cake on this one.
    15,000 Gallon Heated Diamond Brite Plaster Pool
    200 Gallon Hot Springs Jetsetter Spa
    Outdoors Partial Tree Shaded Lanai
    Taylor K2006 Test + SpeedStir

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    Re: Help Calculating Volume (Odd Shape)

    Quote Originally Posted by pinkfloydeffect View Post
    I have been dosing based on 12,000G and it comes in short, responds much better to the calculator when dosed at 15,000G.

    I was able to find the old owners records at a local pool store, and they had it calculated @ 13,500 so Teald024 takes the cake on this one.



    If the 15k number gets you the anticipated results, then go with that and keep tweaking as needed.

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    Re: Help Calculating Volume (Odd Shape)

    Thank you man, within about a week I will make up my mind on what I want to list my pool volume as. Likely going to go with 15,000G

    A little off topic but we have been having an issue here in FL the live oak trees are throwing off billions of seed pods that make it through the screen and all over the pool surface and stick to the walls of the pool. They make a surfactant that will allow all this to drop to the bottom and then vac it up but we use a robotic vac and it says with cartridge filters you need to vac to waste....which is a waste with the robot since it climbs walls and goes over the same spots multiple times. I do not have time to manually vac the bottom so we are now looking at floating skimmer boxes that attach to your vac port.
    15,000 Gallon Heated Diamond Brite Plaster Pool
    200 Gallon Hot Springs Jetsetter Spa
    Outdoors Partial Tree Shaded Lanai
    Taylor K2006 Test + SpeedStir

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    Re: Help Calculating Volume (Odd Shape)

    Quote Originally Posted by pinkfloydeffect View Post
    A little off topic but we have been having an issue here in FL the live oak trees are throwing off billions of seed pods that make it through the screen and all over the pool surface and stick to the walls of the pool. They make a surfactant that will allow all this to drop to the bottom and then vac it up but we use a robotic vac and it says with cartridge filters you need to vac to waste....which is a waste with the robot since it climbs walls and goes over the same spots multiple times. I do not have time to manually vac the bottom so we are now looking at floating skimmer boxes that attach to your vac port.
    Is your pool skimmer(s) not able to handle the gunk? There are many here that use hairnets in the skimmers to keep the stuff out of the filter. They are disposable and could be cleaned regularly.
    I would agree that your shouldn't use the pool potions.

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    Re: Help Calculating Volume (Odd Shape)

    I have a single skimmer, with a sock in it. The sock fills instantly, even though it still has flow it can not keep up with the load and they end up stuck to the side walls.

    The potion to make things sink could work with our robotic vac if we connected it to the skimmer basket and sock with a cap rather than the sidewall vac port.
    15,000 Gallon Heated Diamond Brite Plaster Pool
    200 Gallon Hot Springs Jetsetter Spa
    Outdoors Partial Tree Shaded Lanai
    Taylor K2006 Test + SpeedStir

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    Mod Squad YippeeSkippy's Avatar
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    Re: Help Calculating Volume (Odd Shape)

    The potion to make things sink could work with our robotic vac if we connected it to the skimmer basket and sock with a cap rather than the sidewall vac port.
    ...or it could gum up your filter which would be a pain. Which is why we don't recommend potions as a rule.

    Maddie
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    Re: Help Calculating Volume (Odd Shape)

    Quote Originally Posted by YippeeSkippy View Post
    ...or it could gum up your filter which would be a pain. Which is why we don't recommend potions as a rule.

    Maddie
    I will stay away from it, thank you.
    15,000 Gallon Heated Diamond Brite Plaster Pool
    200 Gallon Hot Springs Jetsetter Spa
    Outdoors Partial Tree Shaded Lanai
    Taylor K2006 Test + SpeedStir

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    JoyfulNoise's Avatar
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    Re: Help Calculating Volume (Odd Shape)

    For those that must know their exact pool volume to the nearest micro-gallon -

    A Chemical Way of Calculating Pool Volume
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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