how to find cubic yards

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PYCHUNG

New User

• Mar 28, 2010

• #1

I hope i r not too old to learn //

 

Greg_Ky

Member

• Mar 28, 2010

• #1

What are you trying to find the cubic yardage of?

 

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Anonymous-0

Well-known Member

• Mar 28, 2010

• #1

Length x Width x Depth all in feet devided by 27=cubic yards

 

Greg_Ky

Member

• Mar 28, 2010

• #1

Acubic yard

27 cubic feet
46656 cubic inches

pouring concrete?
81 square feet 4 inches thick per yard
54 square feet 6 inches thick per yard

 

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Russ from MN

Well-known Member

Location

Bemidji MN

• Mar 28, 2010

• #1

Length x width x height in ft. divide by 27. Spheres, cones, and cylinders require formulas that you should look up, maybe in (engineers edge).

 

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old

Well-known Member

Location

Camdenton Missouri

• Mar 28, 2010

• #1

A cubic yard if a box 3 ft square or 27 square feet. Say you have a cement floor that is 12 inches thick and 3 foot wide then it would be 27 foot long if I am figuring right which I may not be but think I am with out putting it on paper that is

 

Greg_Ky

Member

• Mar 28, 2010

• #1

Hey Rich that floor would take three cubic yards. 12 inches thick x 12inches wide x 27 feet long would be 81cubic feet or 3 cubic yards.

 

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old

Well-known Member

Location

Camdenton Missouri

• Mar 28, 2010

• #1

Well as I said I did not put in on paper so I knew I could be wrong since I did it in my head which any more does not calculate like it once did LOL

 

Greg_Ky

Member

• Mar 28, 2010

• #1

Can't type today that should have said 12 inches thick x 36 inches wide x 27 feet long = 81 cubic feet or 3 cubic yards

 

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old

Well-known Member

Location

Camdenton Missouri

• Mar 28, 2010

• #1

LOL see we both goofed on that but at least the guy is getting the idea even if he has to read 3 or 4 posts to get it correct LOL So it should be 1 foot thick by 1 foot wide by 27 foot long to be correct RIGHT?

 

Greg_Ky

Member

• Mar 28, 2010

• #1

And my fingers do not always type what my mind is thinking. LOL!!! ( if they did I would most likely be in a lot more trouble)

 

Greg_Ky

Member

• Mar 28, 2010

• #1

Yeah, using this Iphone is not helping either, I have got to get the computer back up and running.

 

MarkB_MI

Well-known Member

Location

Motown USA

• Mar 28, 2010

• #1

It would be helpful to know where you're starting from. Cubic feet, cubic inches, gallons, liters and bushels can all be converted into cubic yards.

Now, if I'm trying to figure out how many yards it takes to pour a slab, I start with the square feet. Multiply that number by the thickness of the slab in feet. (In other words, a four-inch slab is one-third of a foot, and a six-inch slab is half a foot thick. So divide by 3 if it's a four inch slab, divide by two if it's a six inch slab). Then divide the result by 27. I do it this way because I can do the calculation quickly in my head.

Example: A slab 30 x 40 feet, four inches thick:

30 x 40 = 1200 sq ft.
1200 divided by 3 = 400 cubic ft.
400 divided by 27 is about 15 cubic yards.

See, you can do it all in your head, don't even need a pencil. (Actually the exact answer is 14.8, but if you're calculating it in your head you'll be close enough if you round off to the closest whole number.)

 

OP

OP

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PYCHUNG

New User

• Mar 28, 2010

• #1

Dump truck

 

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ericlb

Well-known Member

• Mar 28, 2010

• #1

describe the dump truck, ie number of axles, length and height of dump body ect, be advised on some dump trucks with extra long bodys the number of cubic yards it can hold and the number of cubic yards it can haul on the road are not the same

 

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WNY Charlie

New User

• Mar 28, 2010

• #1

Dump truck example.

Body is 12 feet long, 3 feet deep, 8 feet wide. Level full. Contains 10 2/3 yards of material.

As previously stated:
length in feet x width in feet x depth in feet divided by 27 = cubic yards

Hope this helps.

 

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Old Roy

Well-known Member

• Mar 28, 2010

• #1

try this, just add the measurements and calculate
Untitled URL Link

 

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S2710

Well-known Member

• Mar 28, 2010

• #1

you multiply the length in feet by the width in feet by the height in feet and devide by 27 and you will have cubic yards. Example 10 long by 8 wide equals 80 by 4 foot high equals 320 cubic feet. Now devide 320 by 27 and you get 11.8cubic yards. Hope this helps.
Bob

 

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daman

Member

• Mar 28, 2010

• #1

what about if you need inches for a floor pour?

Ft x Ft x inches

 

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scot in pa

Member

• Mar 28, 2010

• #1

There aren't a whole lot of trucks that can carry a full box of any kind of dirt without having some weight issues. Now something like sawdust you can.

 

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Mark - IN.

Well-known Member

• Mar 28, 2010

• #1

Well, don't make a mistake because when the concrete guy drives his mixer up with the 3 yards or whatever was ordered, he's dumping all of it, even if it turns out that only 2 yards was needed and framed for. He's leaving minus what was ordered because once its mixed, there aint no way of putting the genie back in its bottle, even if it means pointing and saying to the fella, "Dump the rest over there". Its being delivered and not staying in that mixer to harden. Catch my drift?

Mark

 

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Anonymous-0

Well-known Member

• Mar 28, 2010

• #1

A tandem gravel truck will usually haul 12 yds. of black dirt but only 10 yds. of sand or road crush. It could vary a bit a bit depending on the truck. Dave

 

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PJH

Well-known Member

• Mar 28, 2010

• #1

Daman - the formula is still the same, only you must convert the inches to feet. 6 inches equals .5 feet for instance.

Formula:
feet X feet X inches divided by 12 equals cubic feet

cubic feet divided by 27 equals cubic yards

Remember - for using form calculations to order concrete - order extra.
Some of it sticks to the drum - measurements may be short - labor costs by the hour - concrete is easier to finish if it's all the same "age".
If the driver leaves with a little in the truck, you've figgered well. If he runs out - you screwed up.
It's pretty hard and very risky to figure it exact.

Paul

 

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GA Dave

Well-known Member

• Mar 28, 2010

• #1

http://www.concretenetwork.com/concrete/howmuch/calculator.htm

 

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kyplowboy

Well-known Member

• Mar 29, 2010

• #1

Around here trucks do not and will not take it back with them. It's going some where. Every time I have done a concrete project after I figrue how much I am going to need, I then find a mud hole some where close that needs filling for the extra.

Dave

 

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Anonymous-0

Well-known Member

• Mar 29, 2010

• #1

divide the inches by 12 to get a decimal. e.g
4 div/by 12 = point 333333 , one third.

 

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daman

Member

• Mar 29, 2010

• #1

(quoted from post at 02:45:47 03/29/10) Daman - the formula is still the same, only you must convert the inches to feet. 6 inches equals .5 feet for instance.

Formula:
feet X feet X inches divided by 12 equals cubic feet

cubic feet divided by 27 equals cubic yards

Remember - for using form calculations to order concrete - order extra.
Some of it sticks to the drum - measurements may be short - labor costs by the hour - concrete is easier to finish if it's all the same "age".
If the driver leaves with a little in the truck, you've figgered well. If he runs out - you screwed up.
It's pretty hard and very risky to figure it exact.

Paul

Click to expand...

thanks Paul

(quoted from post at 03:07:40 03/29/10) http://www.concretenetwork.com/concrete/howmuch/calculator.htm

Click to expand...

very handy thanks!!, I'm pretty much going to be doing a square pour(16X30) so it should come out close.



brings up another question,pouring this slab i na pole shed i put up last fall the heaviest thing going in there will be my 4500 TLB thats weighs around 10,000 lbs or so would 5" concrete be good enough or should i go 6" ???