# How to calculate amount of dirt to be removed?

#### icex

##### LawnSite Senior Member
I've been trying to figure out how to get the exact amount of dirt that is to be removed. I saw the formula posted awhile back but can't remember who posted it or what thread it was under.

The project is to remove some hillside to expand the property. It is 50 foot long and he wants to dig back 10 feet. The height is about 5ft.

What is the formula to figure this out? Thanks

#### Gilmore.Landscaping

##### LawnSite Senior Member
Wow....simple math, How have you estimated jobs in the past?

5H X 10D / 2 = 25 sq.ft. The Area of a triangle

25sq.ft x 50 feet long = 1250 cu.ft. Amount of soil to remove.

22 Yards per dump truck (This can vary, just an example)

27 cu.ft. = 1 cu.yd.

1250 / 27 = 46 loads (this represents compacted soil)

Got a Shovel?

OP
I

#### icex

##### LawnSite Senior Member
Wow....simple math, How have you estimated jobs in the past?

5H X 10D / 2 = 25 sq.ft. The Area of a triangle

25sq.ft x 50 feet long = 1250 cu.ft. Amount of soil to remove.

22 Yards per dump truck (This can vary, just an example)

27 cu.ft. = 1 cu.yd.

1250 / 27 = 46 loads (this represents compacted soil)

Got a Shovel?
Nope, I've calcuated rock and gabion baskets for creek bank restorations because that's what I usualy deal with. Never have had to load dirt out into a dump truck. First for everything.

#### Gilmore.Landscaping

##### LawnSite Senior Member
What I am saying is its a simple area/volume calc. Its the same as calculating rock/soil/mulch/gravel.

OP
I

#### icex

##### LawnSite Senior Member
What I am saying is its a simple area/volume calc. Its the same as calculating rock/soil/mulch/gravel.
I'm not good at math, at all. Once I'm shown how to do it though I get the hang of it.

#### jwilkes

##### LawnSite Member
Wow....simple math, How have you estimated jobs in the past?

5H X 10D / 2 = 25 sq.ft. The Area of a triangle

25sq.ft x 50 feet long = 1250 cu.ft. Amount of soil to remove.

22 Yards per dump truck (This can vary, just an example)

27 cu.ft. = 1 cu.yd.

1250 / 27 = 46 loads (this represents compacted soil)

Got a Shovel?
I'm glad you don't estimate for me I came up with about 46 yards figure swell depending on dirt I would say 50 to 55 yards at about 12 to 14 yards per truck 5 loads at the most

#### Gilmore.Landscaping

##### LawnSite Senior Member
I'm glad you don't estimate for me I came up with about 46 yards figure swell depending on dirt I would say 50 to 55 yards at about 12 to 14 yards per truck 5 loads at the most
haha, your right....whiskey and Math don't mix. That was supposed to be 46 yards not 46 trucks, haha.

Yea so 46 yards is like 3 trucks more likely.

OP
I

#### icex

##### LawnSite Senior Member
haha, your right....whiskey and Math don't mix. That was supposed to be 46 yards not 46 trucks, haha.

Yea so 46 yards is like 3 trucks more likely.
Yeah.. after thinking about it I only see about 5-6 truckloads there because the hill gets steeper and the height increases as it goes back.

#### 4 seasons lawn&land

##### LawnSite Gold Member
Guys, its tuesday. Hitting the sauce a little early arent we?

length x width x height = cubic feet

cubic feet divided by 27 = yards

Thats 92 yards. Dont know how your getting 46

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