Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 17 of 17

Thread: How to calculate amount of pea gravel/rock needed around pool

  1. Back To Top    #1
    Taylorbay's Avatar
    Join Date
    Jun 2014
    Location
    Heiskell, TN
    Posts
    17

    How to calculate amount of pea gravel/rock needed around pool

    We are about to enjoy our 2nd summer of our AG pool, last year we had it professionally installed and decided to do the landscaping ourselves, which we never got around to doing last year. i had some ideas but they didn't work out

    So... have a couple questions --

    1. pea gravel? river rock? or sand?

    2. how to calculatte amound needed for around pool, for instance i have a quote of 1 bobcat scoop of pea gravel = 4/5 of a cubic yard, the pool is 24' round

    help!




    pool - finished r.jpg
    24' x 52" Artesian Heritage AG / 15,000 Gal
    19" Sand Filter, 1 H.P. Pump Combo
    Installed: June 2014
    Frog System, Hard Plumbed

  2. Back To Top    #2

    Join Date
    Aug 2014
    Location
    Shallotte, NC
    Posts
    693

    Re: How to calculate amount of pea gravel/rock needed around pool

    How wide and how deep will the gravel be?

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How to calculate amount of pea gravel/rock needed around pool

    How wide of a circle around the pool to you want the gravel? How thick?

    If you want 3' all the way around and 3" thick ... that would be 63.6 cubic feet .. which is 2.36 yards ... about 3 "scoops"
    Last edited by jblizzle; 04-07-2015 at 04:38 PM. Reason: Fixed my math
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: How to calculate amount of pea gravel/rock needed around pool

    here is a link

    http://www.calculatorsoup.com/calcul...calculator.php

    figure out the area of your outer circle then subtract the area of your pool from that to get what the border is. Although that link above calculates a circle border for you.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  5. Back To Top    #5
    Taylorbay's Avatar
    Join Date
    Jun 2014
    Location
    Heiskell, TN
    Posts
    17

    Re: How to calculate amount of pea gravel/rock needed around pool

    good questions lol

    I would estimate 2 - 3 feet, as far as dept, I'm not sure, what is normal?
    24' x 52" Artesian Heritage AG / 15,000 Gal
    19" Sand Filter, 1 H.P. Pump Combo
    Installed: June 2014
    Frog System, Hard Plumbed

  6. Back To Top    #6

    Join Date
    Aug 2014
    Location
    Shallotte, NC
    Posts
    693

    Re: How to calculate amount of pea gravel/rock needed around pool

    You might want some sort of coping at the bottom of the slope, or you are going to be slinging gravel everywhere with the lawn mower....

  7. Back To Top    #7
    sargent's Avatar
    Join Date
    Aug 2013
    Location
    Tulsa, OK
    Posts
    291

    Re: How to calculate amount of pea gravel/rock needed around pool

    1. River rock. Pea gravel will stick to your feet.

    2. v = pi(a^2-b^2)c

    where v = volume of rock
    pi = 3.14 or so
    a = radius to outer edge of rock
    b = radius to edge of pool
    c = depth of rock

    so, for a 24' diameter pool with 2 foot width of rock, 3 inches deep, a = 14', b= 12', c = 1/4'
    v = 3.14 x (14^2 - 12^2) x 1/4 = 40.8 cubic feet = 1.51 cubic yards (edited to correct typo)

    That's pretty close to two bobcat scoops. Adjust your numbers if you want a wider border or more depth. Use landscape fabric under rock to block weeds.
    14k gal IG vinyl, Jandy Flopro 1 hp up-rated, 2 spd pump, Hayward 325 sq ft cartridge filter, Circupool Si-40 SWCG

  8. Back To Top    #8
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: How to calculate amount of pea gravel/rock needed around pool

    Quote Originally Posted by Taylorbay View Post
    good questions lol

    I would estimate 2 - 3 feet, as far as dept, I'm not sure, what is normal?
    Usually 4"-6"
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  9. Back To Top    #9
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: How to calculate amount of pea gravel/rock needed around pool

    Quote Originally Posted by sargent View Post
    1. River rock. Pea gravel will stick to your feet.

    2. v = pi(a^2-b^2)c

    where v = volume of rock
    pi = 3.14 or so
    a = radius to outer edge of rock
    b = radius to edge of pool
    c = depth of rock

    so, for a 24' diameter pool with 2 foot width of rock, 3 inches deep, a = 14', b= 12', c = 1/4'
    v = 3.14 x (13^2 - 12^2) x 1/4 = 40.8 cubic feet = 1.51 cubic yards

    That's pretty close to two bobcat scoops. Adjust your numbers if you want a wider border or more depth. Use landscape fabric under rock to block weeds.
    Close, but not quite... typo there. 82.9 cu ft. 3 cubic yards.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  10. Back To Top    #10
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: How to calculate amount of pea gravel/rock needed around pool

    Quote Originally Posted by Richard320 View Post
    Close, but not quite... typo there. 82.9 cu ft. 3 cubic yards.
    Actually the 13' was the typo but the math was done with 14' ... the 40.8 cubic feet is correct.

    - - - Updated - - -

    Just use the calculator that pooldv posted and forget about the math that apparently we are all going to mess up
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  11. Back To Top    #11
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: How to calculate amount of pea gravel/rock needed around pool

    Right!!!
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  12. Back To Top    #12
    Taylorbay's Avatar
    Join Date
    Jun 2014
    Location
    Heiskell, TN
    Posts
    17

    Re: How to calculate amount of pea gravel/rock needed around pool

    thanks everyone! I think now I actually have an idea of how much to get!
    24' x 52" Artesian Heritage AG / 15,000 Gal
    19" Sand Filter, 1 H.P. Pump Combo
    Installed: June 2014
    Frog System, Hard Plumbed

  13. Back To Top    #13

    Join Date
    Feb 2015
    Location
    Bardstown KY
    Posts
    139

    Re: How to calculate amount of pea gravel/rock needed around pool

    If I may ask, how much were you quoted for river rock? We need to get some for our landscaping as well but I'm not sure what a good price might be. (Realizing this will vary some by area)

    And nice to see a fellow Steelers fan.

  14. Back To Top    #14
    elwood58's Avatar
    Join Date
    May 2012
    Location
    Sun City West Arizona (2nd Home)
    Posts
    639

    Re: How to calculate amount of pea gravel/rock needed around pool

    I vote River Rock over Pea Gravel. River Rock stays where you put it. Pea Gravel wanders around the yard while you are not looking
    19204 Gallon L Shape with a 10X10 2nd Step Baja Ledge. Intellichlor IC-40, IntellipH, Cartridge Filter, Pentair Heater/Chiller (Heat Pump). Tons of Deck with Deck Jets. Construction Complete 6/5/17.

    "If you don't measure it, you can't manage it!"

  15. Back To Top    #15

    Join Date
    Mar 2013
    Location
    CT
    Posts
    294

    Re: How to calculate amount of pea gravel/rock needed around pool

    Quote Originally Posted by elwood58 View Post
    I vote River Rock over Pea Gravel. River Rock stays where you put it. Pea Gravel wanders around the yard while you are not looking
    What he said...
    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

  16. Back To Top    #16
    Divin Dave's Avatar
    Join Date
    Oct 2013
    Location
    Longview, Texas
    Posts
    4,926

    Re: How to calculate amount of pea gravel/rock needed around pool

    RIVER ROCK!

    Pea Gravel will stick to your feet and the weed eather and lawnmower shoots out them like .22 bullets! They hurt when they hit you. Bad!
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

  17. Back To Top    #17
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Re: How to calculate amount of pea gravel/rock needed around pool

    Quote Originally Posted by Divin Dave View Post
    RIVER ROCK!

    Pea Gravel will stick to your feet and the weed eather and lawnmower shoots out them like .22 bullets! They hurt when they hit you. Bad!
    Yes. Pea gravel = bad. Hurts like crazy on the next step when they stick on your feet. I broke a nice storm door one time with pea gravel with the weed eater just above idle. Glad it was tempered glass. Whatever you get, make sure you do a good border to hold it where it belongs.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •