# base calculator

Discussion in 'Hardscaping' started by clcare2, Nov 15, 2010.

1. ### clcare2LawnSite Memberfrom indianaPosts: 224

Is there a calculator available for base and sand??

2. ### DVS HardscaperLawnSite Fanaticfrom County JailPosts: 6,412

if you have Microsoft Excel, you can make your own.

1 ton of concrete sand will cover 200 SF at 1-inch depth.

For aggregate, lets say 5" depth - I use this:

LxWxD/12/27*1.2*1.5

So if you have a 20x20 patio with a 5" base it'll look like this:

20x20x5 = 2000 divided by 12 (converts the inches) divided by 27 (converts to cu yds) = 6.17 x 1.2 (converts to tons) x 1.5 (to factor for compaction) = 11.11 tons

A formula my estimating system uses. been doin it this way from day one. works for us

,

3. ### SVA_ConcreteLawnSite Senior MemberPosts: 467

Construction Master calculators are pretty helpful as well.

they can convert feet to inches and yards, square and cubic. areas of circles etc etc. all the math functions built in. as well as the Pythagorean theorem for squaring up.

check home depot or amazon.

4. ### AztlanLCLawnSite Bronze Memberfrom Highland, NYPosts: 1,043

this is my formula it has always worked almost perfect for me.

Length x width x inches of base / 240 if you want tons multiplied by 1.5 this accounts for compaction

5. ### clcare2LawnSite Memberfrom indianaPosts: 224

the 1.5 for compaction was the issue. Thanks.