Need help sq ft to tons

[Wendy1]

I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 18 x 63 feet = 1134 sq ft. My driveway needs to have 4" of asphalt. How may tons will that require?

[Robert Fogt]

You can calculate volume using one of the following formulas:

volume = length * width * height
volume = area * height

though both need to be in the same base unit, so convert inches to feet first.

1134 square feet * (4 inches / 12) feet = 378 cubic feet

Now to convert volume such as cubic feet to weight such as tons, it depends on the density of the substance. If you let me know the substance I may be able to look up the density.

For example, sand would have a different conversion than gravel.

[Unregistered]

hi Robert fogt,

pls help for the above.

Thanks.

Robert Oseghale

You can calculate volume using one of the following formulas:

volume = length * width * height
volume = area * height

though both need to be in the same base unit, so convert inches to feet first.

1134 square feet * (4 inches / 12) feet = 378 cubic feet

Now to convert volume such as cubic feet to weight such as tons, it depends on the density of the substance. If you let me know the substance I may be able to look up the density.

For example, sand would have a different conversion than gravel.

[Robert Fogt]

Crushed asphalt is 45 pounds/cubic foot

378 cubic foot * 45 pounds/cubic foot = 17010 pounds

17010 pounds / 2000 = 8.5 tons

[Jack]

[My parking lot is 6,500 sq. ft. 1 1/2 inches thick of asphalt How any tons are required?

[Robert Fogt]

6500 square foot * (1.5 inches / 12) foot = 812.5 cubic foot

812.5 cubic foot * 45 pounds/cubic foot = 36562.5 pounds

36562.5 pounds / 2000 = 18.28 tons

[DARREL]

i WOULD LIKE SOMEONE TO SHOW ME HOW TO CONVERT 224,046 SQUARE FEET IN TONS?

[Mrs X]

Hi, square feet is an area, which doesn't have any weight. To work out what weight you need or have, you need two more parameters. You need the depth of the area you are interested in, and you need the density of the substance you want to remove (or fill it with).

Density is the weight for volume of a particular material. As you can see from the above posts, crushed ashphalt is 45 pounds per cubic foot.

This means if you have a box of ashpahlt which is 12" x 12" x 12", then the ashphalt will weigh 45 pounds. A cubic foot of a different material will probably weigh a different amount.

To answer your question, work out how many cubic feet you need, then work out how much that many cubic feet will weigh.

[neutle2]

I would like to find how many tons of crusher run I would need for my drive 10' x 450' x 3" any help in this area would be greatly appreciated. And how you figure it.

Thanks.
wizard of math, I'm not

[Unregistered]

360' x 1080' x 2" deep is how many tons

[Unregistered]

360' x 1080' x 2" deep is how many tons
(length x width x thickness divided by 27) x 2 should give you a close amount. Making sure all units are the same. 2" is about 1.66'. About 47,808 tons or about 1,992 loads of 24 tons each.

[Unregistered]

I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 18 x 63 feet = 1134 sq ft. My driveway needs to have 4" of asphalt. How may tons will that require?
Approx.28 ton

[Unregistered]

360' x 1080' x 2" deep is how many tons
(length x width x thickness divided by 27) x 2 should give you a close amount. Making sure all units are the same. 2" is about .166'. About 4,780.8tons or about 199.2 loads of 24 tons each. UPDATE

[Unregistered]

I am trying to convert sq feet to tons for sediment in a stream. Any ideas on density?

Thanks!

[Unregistered]

That's the weight conversion I was looking for! Thanks so much! --Maria

[Unregistered]

need to figure tons for a utility cut measuring 1200' x 1' x 2" deep using cold mix

[Unregistered]

I have an area 8400 sq ft. need to know how many tons of millings i would need

[hi aug0502]

rich ,my driveway is 64 ft. long by 25 ft. wide how much graded base material would I need to cover that area by tons 2 inches deep and 4 inches deep .

[Flintstone]

To get an exact number use the following;

1134/10.76 = 105.40 m^2

1" = 2.54cm

4"*2.54 = 10.16cm

10.16/100 = .11

now that you have the SQFT in square meters and the depth in centimeter you can finish the formular

105.40*.11 = 10.70

10.70*1.7 = 18.2 AMERICAN TON

[waysee]

i WOULD LIKE SOMEONE TO SHOW ME HOW TO CONVERT 1220,046 SQUARE FEET IN TONS?

[Unregistered]

I have a two mile section of driveway that is 24 feet wide, and we are placing a 2 inch overlay. What would be a good estimate on tons of HMA needed?

[Joe Zach]

Area of driveway = 1134 s.f; 1134s.f / 9 = 126 S.Y

1 MT of asphalt will cover 18 S.Y. of area with 1 inch thick.

Tons required = {126 /18} x 1 inch thick = 7 Tons for 1 inch thick

For 4 inch thick = 7 MT x 4 inches = 28 Tons (total)

[Please note you do not need 4 inch thick asphalt if it is a normal usage home driveway.
Put 4 inch sub-base and 2 inch asphalt.
Together it should cost you $3.00 per s.f. = 1134 x $3.00/s.f = $3400.00 for both sub-base and asphalt.]

[Dirtman]

I have a two mile section of driveway that is 24 feet wide, and we are placing a 2 inch overlay. What would be a good estimate on tons of HMA needed?

I’m assuming you are the owner of this driveway, as any HMA contractor asking about quantities on an Internet forum would be the one NOT to use! A 2” overlay, 2 miles long and 24’ wide will cost a few dollars!

10560’ long * 24’ wide = 253440 ft2
2” / 12” = 0.1667’, so 253440 ft2 * 0.1667 ft = 42240 ft3
42240 ft3 / 27 ft3 * 2.025 tons/cy3 = 3168 tons HMA needed (approximate)

I know nothing of your project but before you proceed, address the reasons why you believe an overlay is needed. If sub-grade problems exist, take steps to repair them first. It will save you a lot of money in the future. Distress and failure of existing asphalt will migrate to the new asphalt over time.

There are less expensive ways to repair your existing road if the structural integrity of the existing pavement and sub-grade is sound.

Before you proceed, I suggest you read through the following website, especially under the tab “Maint and Rehab”, at: http://www.asphaltwa.com/wapa_web/index.htm (http://www.asphaltwa.com/wapa_web/index.htm) Another excellent site is NAPA at: http://www.hotmix.org/index.php (http://www.hotmix.org/index.php)

[Unregistered]

How do i calculate the volume of aggregates(crusher stones) measuring 2mmto5mm,10mmto15mm,20mmto25mm and 35mmto 40mm.how do i calculate in tons & cft.
How do i convert them from tons to cft & cft to tons

[Unregistered]

my chem teacher gave us a problem where we have to find the volume of a cruise ship (no dimensions) and only have us the density (1.89g/cm^3) and that it was 130000 tons....how do u find the density???!!!!

[JohnS]

my chem teacher gave us a problem where we have to find the volume of a cruise ship (no dimensions) and only have us the density (1.89g/cm^3) and that it was 130000 tons....how do u find the density???!!!!

Problem #1: The density of fresh water is 1 g/cm³, salt water 1.025 g/cm³, so your teacher gave you an anchor, not a ship. The ship's average density must be less than that of water to float.

Problem #2: What kind of tonnage. Reguister tons are actually a volume (100 cu ft) of cargo capacity. Displacement tons are the weight of water the ship displaces. Deadweight tons are the the weight of cargo, crew, fuel, etc, everything except the empty ship.

Problem 3 what kind of tons, long (2240 lb, short (2000 lb) or metric (1000 kg).

[Unregistered]

Need to convert 120lbs/cft to tons/cyd.

[JohnS]

Need to convert 120lbs/cft to tons/cyd.

120 lb/ft³ x 27 ft³/yd³ x 1 ton/2000 lb = 1.62 ton/yd³

[Unregistered]

I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 18 x 63 feet = 1134 sq ft. My driveway needs to have 4" of asphalt. How may tons will that require?

Square yard x depth x .0563
1134/9 x 4 x .0563
126 x 4 x .0563
28 tns

[Unregistered]

Hi I'm wondering how to convert short tons (ST=2000 pounds) to MSF (thousand square feet). Basically, my question is how to convert $713.57/ST to dollars per MSF.

Thank you

[JohnS]

Hi I'm wondering how to convert short tons (ST=2000 pounds) to MSF (thousand square feet). Basically, my question is how to convert $713.57/ST to dollars per MSF.

Thank you

It depends on what you are trying to apply:

*Agricultural product like fertilizer: You would have to know the application rate, pounds per square foot, or tons per acre or something.

Stone, cement, and the like: You would have to know the density to convert weight to volume, and the thickness you want to convert volume to area.

[Unregistered]

I have an area that is 120 X 100 and needs about 4 inches of dirt. What does that convert to in tons?

[Dirtman]

I have an area that is 120 X 100 and needs about 4 inches of dirt. What does that convert to in tons?

120 ft * 100 ft * (4"/12") = 120 ft * 100 ft * 0.333 ft = 3996 ft3. To obtain yd3, divide ft3by 27, which = 148 yd3.

Weight is another matter, which is dependent on the type of material wanted or needed, admixtures, moisture content and compaction.

An exact weight is impossible but before we can even give a range to work with, additional information is needed. What type of 'dirt' and what is the end product for this 'dirt'? Sub-base for concrete? Garden or planting medium? Building foundation?

[LZ021168AZ]

:cool::eek:I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 21 x 48 feet = 1008 sq ft. My driveway needs to have 2" of asphalt. How may tons will that require?

[LZ021168AZ]

I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 18 x 63 feet = 1134 sq ft. My driveway needs to have 4" of asphalt. How may tons will that require?

[QUOTE=LZ021168AZ;69473] my driveway is 21x48 feet x 2" ticker how may tons requiered

[LZ021168AZ]

please i need some one help me calculate my driveway is 21x48 feet = 1008 square feet with 2" asphalt how may tons requiered

[Dirtman]

please i need some one help me calculate my driveway is 21x48 feet = 1008 square feet with 2" asphalt how may tons requiered

21 ft * 48 ft * (2 in / 12 in/ft) = 21 ft * 48 ft * 0.167 ft = 168.34 ft3

The weight of HMA (hot mix asphalt) depends on the compacted density but it should approach 150 lb/ft3.

168.34 ft3 * 150 lb/ft3 = 25 251 lbs / 2000 lbs/ton = 12.63 tons

[Unregistered]

I need help with converting square feet to tons of sand and of decomposed granite. I'm seeing different equations from different sources. It's for a corral and will be packed somewhat and watered.

[JohnS]

I need help with converting square feet to tons of sand and of decomposed granite. I'm seeing different equations from different sources. It's for a corral and will be packed somewhat and watered.

If it is zero feet thick, you don't need any, so the square footage is not enough information. You must multiple by the thickness to get volume. Usually volumes of materials are specified in cubic yards. If you have an area in square feet, and a thickness in inches, then volume is
V = (A/9)* (T/36) = A*T/324 cubic yards
(the factors convert area to square yards and thickness to yards)

The density of materials depends on how loose it is, precise composition, and moisture content. To account for looseness when delivered, multiply above volume by 1.2 to determine how many cubic yards to order. If ordered in tons, assume about 1.5 ton/yd for dry sand/gravel, may be up to 1.7 ton/yd for wet.

The volume calculation is exact, but the packing factor and density are approximations for typical materials. You may encounter some variation.

[Unregistered]

2875 sq. feet 1/4 i

nch gravel for drive way 1/2 inch deep how many tons needed

[Dirtman]

2875 sq. feet 1/4 inch gravel for drive way 1/2 inch deep how many tons needed

Approximately 7 tons. Although it's dependent of the base rock, average densities for screened gravel run in the neighborhood of 105.5 lb/ft3 (dry) to 125.9 lb/ft3 (wet).

Using an average of 115 lb/ft3: 2875 ft2 * (0.5 in / 12 in) ft * 115 lb/ft3 / 2000 lb/ton = 6.88 tons

[Unregistered]

800 square metres how much stone would i need in tonnes

[Unregistered]

Help Please!!!!!

Flagstone patio material....360 sq ft. how many tons will I need???? Thanks so much!!!

[Dirtman]

Help Please!!!!!

Flagstone patio material....360 sq ft. how many tons will I need???? Thanks so much!!!

Depends on the density of the flagstone (which is a generic term for any flat, natural stone such as slate, bluestone, etc) and how thick the slabs are, which you don't provide.

Density can range from 140 lbs/ft3 to over 180 lbs/ft3. I suggest you call a company that deals with the type of flagstone pavers you want and talk to them.

[Unregistered]

I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 18 x 63 feet = 1134 sq ft. My driveway needs to have 4" of asphalt. How may tons will that require?

I would like someone to hepl me to convert 80 ft x 80ft x 4" thk of Decomposed Granite into how many tons

[Dirtman]

I would like someone to hepl me to convert 80 ft x 80ft x 4" thk of Decomposed Granite into how many tons

Properly compacted DG can reach 133 lbs/ft3 or slightly higher. Using 133 lbs/ft3:

80 ft * 80 ft * 0.333 ft = 2131 ft3 * 133 lbs/ft3 / 2000 lbs/ton = 141.7 tons

FWIW, if you're thinking about making a driveway out of it, I doubt you'll be happy with it when it rains.

[Unregistered]

i need ti figure out how many ons of pea gravel i need to shade 4inches on bottom and 4inches on top my trench is 60 feet long 2 feet wide with a 15 inch pipe in it how many tons of pea gravel do i need??

[Dirtman]

i need ti figure out how many ons of pea gravel i need to shade 4inches on bottom and 4inches on top my trench is 60 feet long 2 feet wide with a 15 inch pipe in it how many tons of pea gravel do i need??

(Cross-section of total fill – cross-section of pipe) * length * density of gravel.

Convert measurements to like units:
(15”+8”)/12” = 1.92 ft
15”/12” = 1.25 ft

Cross-section of fill area in ft3: 1.92 ft * 2 ft = 3.84 ft2
Cross-section of 15” dia. pipe (displacement): 1.252 ft * PI/4 = 1.2272 ft2

3.84 ft2 – 1.2272 ft2 = 2.6128 ft2 * 60 ft = 156.768 ft3

Density of wet pea gravel (bank density) is approximately 129.6 lbs/ft3, so: 156.8 ft3 * 129.6 lbs/ft3 / 2000 lbs/ton = 10.15 tons.

As trench sides are seldom uniform, I would add 10% to be safe (having to order an extra ton of gravel, along with related trucking costs isn’t cheap).

[Unregistered]

Hello

I have a french drain whole dug up 30' long by 1' wide and 2' deep. The gravel is 3/4inch clean. How many tons would i need to fill it? Thanks.

[JohnS]

Hello

I have a french drain whole dug up 30' long by 1' wide and 2' deep. The gravel is 3/4inch clean. How many tons would i need to fill it? Thanks.

30' x 1' x 2' = 60 ft³
It is delivered loose. Allow say 15% for compaction, 60 ft³ x 1.15 = 69 ft³
1 yd³ is 27 ft³, so 2.6 yd³, and dry gravel is about 1.3 ton/yd³, so about 3.3 tons.

[Guest]

Hi, I have a 10,200 square feet driveway that I want to cover with 2 inches of crushed stone. Can you please help me calculate how stone to get? Thanks!

[Robert Fogt]

Hi, I have a 10,200 square feet driveway that I want to cover with 2 inches of crushed stone. Can you please help me calculate how stone to get? Thanks!

2 inches / 12 = 0.1667 feet

10200 square feet * 0.1667 feet = 1700.34 cubic feet

If you can find the crushed stone in cubic feet, you're all set. To purchase by the ton you'd need to know the density which differs by the type and size of the stone.

[Unregistered]

Have a 100ft x200ftx3in how many tons of rock do I need the rock is 2inx1.5in also 15ftx350ft driveway how many ton at 3in deep

[Unregistered]

i need to fill a garage floor 1200 sqft with gravel to pour concrete how many tons of gravel will i need?

[Unregistered]

How to convert 12 feet to tons, and 1.5 ton to feet

[Unregistered]

i have a 45ft tank with 30ft diameter the thickness of the tank is 2inches. The density of the material is 0.29lbs/ft3. How much does this tank weight?

[Unregistered]

I would like someone to help me find out how to go from square feet to number of tons needed: For example my driveway is 18 x 63 feet = 1134 sq ft. My driveway needs to have 4" of asphalt. How may tons will that require?

Someone wanting to pay £800 per ton for some Used Clothes in a 2 x 40ft Containers.

How much will they pay?

Thanks

[Unregistered]

I need to do my drive way which is 5743.47 SF 4" of asphalt how many tons do i need ?

[Unregistered]

Need sand 30 ft diameter circle 2 inches deep how many tons?

[Unregistered]

i need to cover 30 feet by 20 feet by about 2 ins thick what would that be in cube

[Unregistered]

I need to convert to tons for sand for an 18'x18'x2" area

[JohnS]

I need to convert to tons for sand for an 18'x18'x2" area

Convert the 2" to ft (divide by 12)
18 ft x 18 ft x (2/12) ft = 54 ft³
Sand is about 100 lb/ft³, and a ton is 2000 lb, so 2.7 tons.

[crystal]

how much sq ft make one ton

[Unregistered]

3500 sqft and 6mm thickness how much will be the weight

[Unregistered]

you can calculate volume using one of the following formulas:

Volume = length * width * height
volume = area * height

though both need to be in the same base unit, so convert inches to feet first.

1134 square feet * (4 inches / 12) feet = 378 cubic feet

now to convert volume such as cubic feet to weight such as tons, it depends on the density of the substance. If you let me know the substance i may be able to look up the density.

For example, sand would have a different conversion than gravel.

pea gravel 350 sq ft = ? Tons

[ATHENSCONCRETE]

A simple way to convert from square yards to tons of asphalt is to know that one square yard ( 3 feet x 3 feet ) of asphalt compacted to 1 inch thick will weigh 110 pounds. Two inches thick will weigh 220 pounds and three inches thick will weigh 330 pounds and so on. So if your driveway was 10feet wide and 205 feet long and you wanted 2 inch thick asphalt this is how you figure the tons need:

(10ft x205ft)/9sqft/sqyd= 228 square yards

228 sq yds x 220 pounds x 1ton/2000pound = 25.08 Tons of asphalt

(Does not change for the different mixes, the equation is the same)

or simplify = 0.0061 x ( thickness of asphalt in inches) x square feet = Tons of asphalt

This is compacted weight, so remember in order to end up with 1 inch thick asphalt you have to lay down 1.25 inches then compact. For 2 inches you lay down 2.5 inches then compact. So basically you add .25 inches for inch inch of thickness.

[Unregistered]

Please could someone tell me how many tons or kg of sand fit in 300 cu ft convert 300 cu ft

[JohnS]

Please could someone tell me how many tons or kg of sand fit in 300 cu ft convert 300 cu ft

Loose sand (as delivered) around 100 lb/ft³ so 30000 lb or 15 tons.
If you need to fill a 300 ft³ hole, note that it will compact down, and you should allow an extra 15-20% for compaction.

[Naveen]

Hi

I bought 11,890 Kilograms of Timber at the rate of 20 Per Kilogram, i want to know how to convert Kg to Cubic Feet.

[Unregistered]

Dear sir,

i am having 1 acre/43550 sq.feet cultivated lated. I am proposed to increase the land level up to 1 feet. How many tonne's soil required for 1 acre land?

S.murugarajan/india

[Mrs X]

Dear sir,

i am having 1 acre/43550 sq.feet cultivated lated. I am proposed to increase the land level up to 1 feet. How many tonne's soil required for 1 acre land?

S.murugarajan/india

Aren't you metric in India?? You have about 4000m², and you want to increase the depth by 0.3m. So 0.3 x 4000 = 1200cubic meters. If the desity of the compacted soil you are using is about 1.8, you will need about 1.8 x 1200 = ~ 2200 tonnes.

[Eugene]

Crushed asphalt is 45 pounds/cubic foot

378 cubic foot * 45 pounds/cubic foot = 17010 pounds

17010 pounds / 2000 = 8.5 tons

You are right about the way you told me how you figure out concrete on the concrete calculator on my thread but you dont figure asphalt the same like you did with this asphalt question below.

I think you are wrong 18' x 63' x 4" is not 8.2 tons it is more like 28
Here i did it my way and also did it on a asphalt web site on there calculator that is shown below


Length (feet) 63
Width (feet) 18
Thickness (inches) 4


14000cy
378.00 c ft
56700 lb
Hot Mix Ton(s) Required 28.35

[Mrs X]

You are right about the way you told me how you figure out concrete on the concrete calculator on my thread but you dont figure asphalt the same like you did with this asphalt question below.

I think you are wrong 18' x 63' x 4" is not 8.2 tons it is more like 28
Here i did it my way and also did it on a asphalt web site on there calculator that is shown below


Length (feet) 63
Width (feet) 18
Thickness (inches) 4


14000cy
378.00 c ft
56700 lb
Hot Mix Ton(s) Required 28.35

Just so no-one gets confused. :)

63 x 18 x (4/12) = 378 cubic feet.

378/27 = 14 cubic yards.

[Eugene]

Just so no-one gets confused. :)

63 x 18 x (4/12) = 378 cubic feet.

378/27 = 14 cubic yards.


Why did you us 27 that is for concrete asphalt is either / by 9 or / by 160 for tons

[Robert Fogt]

Why did you us 27 that is for concrete asphalt is either / by 9 or / by 160 for tons

There are 27 cubic feet in a cubic yard.

[Eugene]

There are 27 cubic feet in a cubic yard.

Well before i posted it again i called a asphalt place and they said for the messurments i gave them 18' X 63' x 4" and they said i would need 28.5 tons this would leave me with a little extra so your answer of 8.5 ton is wrong by 20 ton!!

[Mrs X]

Well before i posted it again i called a asphalt place and they said for the messurments i gave them 18' X 63' x 4" and they said i would need 28.5 tons this would leave me with a little extra so your answer of 8.5 ton is wrong by 20 ton!!

http://www.hotmix.org/index.php?option=com_content&task=view&id=144&Itemid=227

Hi Eugene, the link above would more or less agree with you, maybe hot mix is different from crushed. Anyway, they give the calculation on the page. :)

[kathm116@aol.com]

how many tons of 2 b stone would it take to fill an area at 17 feet wide times 71 feet long times 10 inches deep?

[JohnS]

how many tons of 2 b stone would it take to fill an area at 17 feet wide times 71 feet long times 10 inches deep?

You need to fill 17 ft x 71 ft x (10/12) ft = 1006 ft³. The rock is delivered loose and will compact somewhat. I'd allow an extra 15%, 1157 ft³.

At 27 ft³/yd³, this is about 43 yd³, and weight about 1.3 ton/yd³, assuming it is dry. Thus about 56 tons.

[Unregistered]

when the allowance for 1 tonne is 2 cubic metres when being charged in a c/kg format?

[Unregistered]

hi Robert fogt,

pls help for the above.

Thanks.

Robert Oseghale

i have 700 ft of concrete 12 inch thick.. how much ton of cocrete is?

[Wehrle]

how many tons are in 18,000 sq ft of 3/4" maple flooring

[Toe]

I need help converting 35 sq meters by 4 inches in depth of m.o.t, In to tonnage for my small driveway. Can anyone help plezz:)

[JohnS]

I need help converting 35 sq meters by 4 inches in depth of m.o.t, In to tonnage for my small driveway. Can anyone help plezz:)

Don't know what m.o.t is
4" is about 0.1 m, so you need 3.5 m³
Broken limestone is about 1.6 t/m³, so for it or any broken/crushed rock, about 5.6 t

For pavement, either asphalt or concrete, about 2.4 t/m³ or 8.4 t.

[Asphalt]

Asphalt Conversion SF X Depth X 12.5 ? 2000 will give you the tonnage needed for your area. I have been doing asphalt all my life. This is hoe its done

[Unregistered]

42x30x2" deep

[Unregistered]

i have a 22 ft round pool how much ground will 15 tons of top soil 12 ins deep

[Unregistered]

I have 50ft x 45 ft x 6ft bin of 1.5 inch limestone rock
13500 cubic ft
How many tons of rock is in it??

[JohnS]

I have 50ft x 45 ft x 6ft bin of 1.5 inch limestone rock
13500 cubic ft
How many tons of rock is in it??
Limestone is about 1.3 ton/yd³
13500 ft³ x 1 yd³/27 ft³ x 1.3 ton/yd = 650 tons

[Unregistered]

how do i take the pipe out for the amount of stone needed. what is the formula? so lets say i have a trench 29 feetlong 4 foot wide 6.5 deep with 6"pipe how do i figure this out

[JohnS]

how do i take the pipe out for the amount of stone needed. what is the formula? so lets say i have a trench 29 feetlong 4 foot wide 6.5 deep with 6"pipe how do i figure this out

Ignoring the pipe, you need 754 ft³ which you can then convert to cubic yards or tons. As it is delivered loose, you may want to add 10% for how it will compact when tamped.

The pipe is so small compared to the hole it will be within the margin of error of how the stone packs down. However it is the volume of a cylinder.
(pi/4)*D*D*L where D is the external diameter in feet, 0.5 ft, and L is the length 29 ft.

Volume to subtract is 0.785 x 0.5 x 0.5 x 29 = 5.7 ft³.

When the pipe diameter is closer to the width of the trench, it can be an important correction.

[Unregistered]

I have an area that is 6,237 sqft. I need to fill this area with 12" of #57 limestone gravel. How many tons of #57 gravel would I need to order to fill this area 12" thick?

[Unregistered]

how many tons is in 100 square feet