







Calculating volume of concrete, dirt, sand, anything. 
20061117 

From Debbie: [This article contains a special calculator to help you find the volume (for example, the cubic yards) of material required to fill (or empty) a space if you know the length, width and depth.]
We are wanting to pour a 24'x30' slab that is 5" deep. How many cubic yards of cement do we need? Answered by Penny Nom. 





A concrete driveway 
20140803 

From Jonathan: How many 90 pound bags of concrete will fill in a 3 inch deep, 20 foot long, 12 feet wide driveway? Answered by Harley Weston. 





A formula for determining concrete volume in cu. yd. 
20140319 

From Steven: I know a couple of formulas for determining concrete volume in cu.yd. the one I use most frequently is length in feet x width in feet x thickness in inch. Divided by 324. It works every time. Where does the number 324 come from. Answered by Penny Nom. 





An extension using concrete blocks 
20131030 

From david: hi how many concrete blocks would i need for an extension 50 ft long ,20 ft wide and 12ft height Answered by Penny Nom. 





A sloped concrete wall 
20131030 

From Brad: We are planning on pouring concrete in a wall form that is sloped. One end is 73 inches tall, and it tapers to 24 inches tall over a distance of 348 inches. It is flat on bottom and sides and is 12 inches thick. Thanks. Answered by Penny Nom. 





A concrete walk around a pool 
20130918 

From poornima: circular Swimming pool is surrounded by a concrete walk 4 feet wide, if the area of the walk is 11/25 of the area of the pool, then the radius of the pool in feet is Answered by Penny Nom. 





1,990 cubic yards in gallons 
20130716 

From Tayler: You have 1,990 cubic yards of concrete to pour.
If the average swimming pool holds 25,000 gallons, how many pools can
Be poured with the 1,990 cubic yards of concrete.
1 cubic yard= 27 cubic feet Answered by Penny Nom. 





Surrounding a pipe with concrete 
20130611 

From jeanne: I need 2 inches of cement around a 20 inch pipe that is 20 feet long. Thank you. Answered by Penny Nom. 





Bags of premixed concrete 
20130412 

From Bruce: Hello there,
I need two cubic yards of concrete for a playgound I am
installing for my kids. That much i have figured out. I am stumped
over the number of 25kg bags of premixed concrete i will need
to accomplish my goal.
Your help would be greatly appreciated.
Thanks
Bruce Answered by Harley Weston. 





Gravel, sand, cement and an equilateral triangle 
20120321 

From saheed: how many tonnes of gravel and sand,bags of cements will be required to concrete 5feet depth/deep of 4feet equilateral triangle? Answered by Harley Weston. 





Blocks in a wall 
20110912 

From JOHN: HOW MANY BLOCK WILL IT TAKE TO BUILD A 28*48 HOME, ON A FOOTER THAT IS DONE ALREADY, I WANT TO GO TEN HIGH. Answered by Harley Weston. 





Volume of concrete 
20110403 

From john: I have 1200 square foot that i need to fill at 4 inches deep. how many cubic yards of concrete will i need? and how do I figure this? Answered by Penny Nom. 





Disposing of some concrete 
20100812 

From Kathy: We are needing to dispose of concrete that we are tearing out of our
backyard and I need to figure the dimensions and weight.
I figured we have approx. 419 sq ft of concrete at 4" thick.
Could you tell me the how much that comes to in cubic ft,
cubic yards and weight. So I can get some estimates on pricing to
haul off and dispose of. thank you Answered by Harley Weston and Tyler Wood. 





How much concrete do I order? 
20100501 

From Carol: We are having a block foundation installed under our house that measures 80ftX28ft and I need to know how to figure out how much concrete to order. The footer will be 12 inches wide and 4 inches deep all the way around the house. How do I figure the square footage of my house? I know area = LxW but do I double that since there 4 sides to my house? Answered by Penny Nom. 





The length of a sidewalk 
20100119 

From Les: I have a sidewalk 4"thick,4ft. wide,and I have 2cubic yards of concrete. What is the length of my sidewalk? Answered by Penny Nom. 





A concrete slab 
20091210 

From Mark: there are 30 cubic yards of concrete, how many feet will it cover with a 4" slab? Answered by Penny Nom. 





A path around a pond 
20091031 

From adeniji: find the area of a concrete path 2m wide surrounding a circular pond 12m in diameter Answered by Penny Nom. 





Cubic feet of concrete 
20090924 

From aLAN: How many CF of concrete does it take to pour a 1000 SF area with concrete at 4" thick?
I would like to see the steps and how you approach this too...thanks Answered by Penny Nom. 





Number of Concrete Blocks 
20090806 

From Simone: Hi there,
I have a quote to complete and I need to figure out the formula that will tell me how many concrete blocks I need to cover a certain area.
Blocks can either be 8in or 12in. The area that I am looking to cover with blocks is 30182 sq ft.
Thank you for your assistance. Answered by Janice Cotcher and Stephen La Rocque. 





A concrete slab 
20090423 

From Robin: how much concrete will i need for a slab that is 14' x 18' and 4 inches thick..tried
but still can not figure it out. what i really need to know is how much of each will i need, cement, gravel and sand.
Thanks robin Answered by Harley Weston. 





310,000 cubic yards of concrete 
20090331 

From Mary: I am interested in getting a good, general analogy for 310,000 cubic yards of concrete 
ideally as a length (miles) or distance between two US cities. Thanks! Answered by Penny Nom. 





Concrete around a pipe 
20090114 

From Doug: How much concrete will i need for a hole that is 20 feet deep 20 inches in
diameter with a 8inch pipe in it. I need to know how much concrete
on the outside of the 8inch pipe. Answered by Penny Nom. 





5 yards of concrete 
20090108 

From jon: To mix 5 yards of concrete, how many loads will I need to mix in a 4.5 cubic
feet mixer? Thanks, jon Answered by Robert Dawson. 





100 yds of concrete 
20081228 

From Carol: how much money is a 100 yds of concrete @ $80cy? Answered by Penny Nom. 





A cubic yard of concrete 
20081228 

From David: assuming that one cubic yard of concrete is 4” thick and 3’ long, how many square feet does it cover?
the answer is 27 but im not sure how. i spent a lot of time and i still can't figure it out. thank you! Answered by Penny Nom. 





The cost of a foundation 
20081208 

From carl: Hi, I need to work out the cost of a foundation.
The foundation is 1m deep x 500mm wide and is 6.3 meters long.
The cost per cubic meter for concrete is 1000 rand
escuvation of earth will be 100 rand per cubic meter and back filling wil also be
100 rand per cubic meter.
What will the cost be Answered by Harley Weston. 





Concrete around a pipe 
20081008 

From mick: i am trying to find the area of concrete to be placed around a concrete pipe! Dimensions can be 12m wide by 5m wide by 7m deep and pipe been 8m by 600mm radius... Answered by Stephen La Rocque. 





The weight of a concrete cylinder 
20080918 

From Curtis: I am trying to calculate the weight of a concrete cylinder. The diameter is 56" and the thickness or depth is 24". Can anyone help me? If possible I would like to see the formula as to how the answer was derived. Thank you Answered by Harley Weston. 





A concrete spectator area 
20080629 

From Paige: an area of the school courts is 58.5m x 60.4m,
The spectator area is to be 2m wide and the concrete has to be 10cm deep
Please can you calculate the volume of concrete needs for the spectator area? Answered by Penny Nom. 





Concrete blocks 
20080618 

From marvin: How many cement blocks do i need to build a 8 ft. tall wall x 1,300 ft. long? Answered by Harley Weston. 





How many yards of concrete will I need? 
20080612 

From Ron: I am putting up a flag pole, and I am trying to fiqure out how much concrete I need for the job. I have a round cardboard cement tube which is 18" across and 24" tall. The bottom of the tube will be filled with 3" of gravel and 3" of sand and the rest will be filled with concrete. Could you tell me how many yards of concrete I need. Answered by Harley Weston. 





The weight of concrete 
20080611 

From Daniel: I need to calculate the weight of Concrete in a slab that measures 2' x 4' x 4" thick.
I am pricing out a job and have two different size stones to work with, the second stone measures
2' x 2' x 4". Answered by Harley Weston. 





810 slabs of concrete 
20080401 

From Wesley: I'm making a 4" x 4" x 2" (Inches) concrete slab (approximately 750 of them, I'm going to plan for 810 for extra material). I'm trying to find out how many bags of cement I need. Each 60 lbs bag makes approximately .5 cu/ft. Answered by Harley Weston. 





How many bags of cement do I need 
20080330 

From Joe: How many bags of cement do I need if I want to extend my carport 6 inches all around?
The carport is 15ft. x 15ft. and the existing slab is 4 inches thick. Answered by Harley Weston. 





A car tire full of concrete 
20080327 

From robert: I want to build a volleyball net support. I am using a car tire 24"odx16"id filled with concrete. how much will this weigh? thanks Answered by Penny Nom. 





The volume of a countertop 
20080308 

From Matthew: I need to calculate volume down to cubic feet. I pour concrete countertops
and cant figure out the formula to convert inches and feet. If I have a 2.5 inch
by 2 foot by 16 foot concrete countertop how do I convert it to cubic feet
and hence know how many bags of concrete at .6 cubic feet per bag I will need.
I am trying to input the formula into a spreadsheet. thank you so much Matt Answered by Penny Nom. 





Belledout pier 
20080128 

From Gina: I need to know how to find the total yards needed to fill a concrete pier that is 54"/ 108" and 26' deep.
That is...54" @ the top of the pier belled to 108" @ the bottom...26' deep. Answered by Stephen La Rocque. 





A large concrete shape 
20080116 

From Keith: what is the cubic yards of an area that is not a perfect 1/4 circle?
The dimensions are 100ft. x 60ft. x 125ft. curcumferal arch x 3ft. depth? Answered by Stephen La Rocque. 





Bags of concrete 
20071206 

From Chris: I need 1 and one half yards of concrete for a project. If one bag is equal
to 0.38 cubic feet, how many bags will I need? Answered by Penny Nom. 





20 tubes of concrete 
20071014 

From Fred: I have 20 8” concrete tubes to fill with 8'of concrete.
How much concrete will I need to order Answered by Stephen La Rocque. 





Mixing cement 
20071009 

From Sandra: How many bags of cement do I need for a floor for a house that is 8meters long, 8meters wide and 50cm deep. Answered by Stephen La Rocque. 





400 square yards of sidewalk 
20070927 

From Vanessa: I am having a small problem being a subcontractor
I'll having trouble calculating how much concrete it will take to pour a 400 square yard sidewalk 5' wide 4" depth can you show me the equation to figure out how many yards of concrete i will need. Can you help me please?
Thank you very much and have a wonderful day. Answered by Penny Nom. 





How many cubic yards of concrete? 
20070831 

From Teresa: How many cubic yards of concrete are required for the structure with a bottom piece that is 8" high by 72" by 72", a side that is 8" by 72" by 60", another side that is 8" by 72" by 60 ", a side that is 8" by 72" by 60" with a circle cut out that has a radius of 18", and finally another side that is 8" by 72" by 60" that has a circle cut out that has a radius of 12". Answered by Stephen La Rocque. 





An irrigation ditch 
20070731 

From Kevin: I would like to know how many cubic yards of concrete I would need to fill a section of irrigation ditch that measures 12 inches on the bottom, 40 inches on top, 16 inches high and 20 feet long with a 18 inch diameter, 20 foot long culvert sitting in the ditch (to remain open). I am trying to build a roadway across the irrigation ditch. Thanks very much. Answered by Penny Nom. 





Tons of concrete 
20070703 

From Trey: I have 300,000 square feet of concrete and want to know how to convert this to tons? Answered by Harley Weston. 





A cylindrical slab of concrete 
20070630 

From Kenn: I have a tank that needs a base of cement put in it. I dont know how to do this. The tank is 8 feet across and I want the cement to be 5 or 6 inches deep. Can you please tell me how much cement I need to do this. Answered by Harley Weston. 





A round pool 
20070612 

From Gene: How many yards of concrete to put a 28' round pool...it is to be 4 inches deep Answered by Penny Nom. 





A bag of concrete 
20070529 

From rick: I have a bag of concrete that will cover .525 cubic feet of space.
How many square feet will the same bag cover? Answered by Penny Nom. 





Concrete sand 
20070308 

From david: Can you tell me how much 4 cubic yards of concrete sand ways in tons? THANK YOU. Answered by Stephen La Rocque. 





A steel pipe pile 
20070308 

From Sean: Need to fill a 18" OD x 60 feet steel pipe pile with a wall thickness of 1/2" What is the amount of concrete I need in order to fill? Thank you Answered by Stephen La Rocque. 





How many yards of concrete? 
20070228 

From jeremy: I need to figure how many yards of concrete to use. I work for an asphalt company, and we are expanding into concrete. Currently we measure everything in sq. ft. So we came up with 6,960 sq ft of concrete to remove and replace. Currently there is 6" of concrete, and 2" of bedding material. We would like to replace only 4.5" of concrete, the rest in bedding. Here is how I figured, am I correct. 6,960 Sq ft (to simplify I made the Sq ft 350 X 20 ) 350 ft X 20 ft X .33 (1/3 ft or 4") = 2,310 cubic feet 2,310 cb ft / 27 = 85.55 cubic yards Is this correct? Answered by Penny Nom. 





A concrete slab in the shape of a regular hexagon 
20070219 

From Mandy: Hi, We are laying a concrete slab in the shape of a regular hexagon with each side being 2m long. The slab will be 10cm thick. How much concrete will we need? Thank you ever so much! Mandy Answered by Penny Nom. 





Concrete paving blocks 
20070129 

From Engelbert: Readmixed concrete is sold by the cubic yard. A landscape contractor wants to form concrete paving blocks that are rectangular solids with dimensions 36 inches by 36 inches by 6 inches. Assuming there is no waste, how many such blocks can she expect to make from one cubic yard of concrete? (1 yard= 36 inches) Answered by Stephen La Rocque. 





Concrete slab 
20070126 

From Cindy: How much concrete will it take to pour a slab 16ft.By 18ft. 3inches deep Answered by Penny Nom. 





A circle of concrete 
20070116 

From JoAnn: Help ! I need to know of many yards of concrete to order for a 14' circle  and 4" thick. Thanks ! Answered by Stephen La Rocque. 





Calculating "yards" 
20070113 

From Donny: I want to learn how to figure out how many tons and yard are needed to do driveways and parking lots. OK from what I've read on the net i think its length width=square feet . i think i get that but i can figure out how to do the height . i understand a 6in would be 0.5 but how bout if its 2ins or 4 in . how do I put the the fraction in to working form. Answered by Penny Nom. 





Building a corral 
20061122 

From Dennis: I'm building a corral and need to know how many holes 6"x24'' in a yard of concrete Answered by Stephen La Rocque and Penny Nom. 





Yards of concrete 
20061115 

From Tina: How many yards of concrete to cover a 20 x 100 area 4 inches deep? Answered by Penny Nom. 





Concrete tubes 
20061023 

From Rick: I have 36 18” concrete tubes to fill with 36” of concrete. How much concrete will it take to do this job Answered by Stephen La Rocque. 





A concrete foundation 
20061002 

From A homeowner: I am pouring a concrete foundation 8" X 14" X 23'. How many cubic feet of concrete do I need? Answered by Penny Nom. 





We need to know how many cubic yards of concrete to order for the job. 
20060925 

From Linda: We are pouring an additional drive way and shop in our back yard. The total square foot of all the concrete is 1200 and the concrete will be 3" deep. We need to know how many cubic yards of concrete to order for the job. Answered by Penny Nom. 





A hexagonal concrete form 
20060909 

From Lewis: How many cubic yards of cement will be required to fill a hexagonal concrete form with equal 12 foot sides that will be 3 feet thick? Answered by Penny Nom. 





How much cement would I need? 
20060907 

From Lou: At a five to one mix how much sand/gravel and how much cement would I need for a 71/2 yard pour?
What formula would I use for this calculation. My sand/gravel is in a cone shaped pile and I know how to calculate that. I need to know if I have enough and how many bags of cement I need to buy. I will be using a engine operated cement mixer Answered by Harley Weston. 





What is the total cost of a driveway ... 
20060829 

From Ismael: What is the total cost of a driveway 15' wide, 40' long and 4" thick if the concrete costs $60.00 per cubic yard and the labor costs $1.25 per square foot? Answered by Stephen La Rocque. 





A concrete floor 
20060827 

From Cecelia: We are going to pour a concrete floor for a porch and would like to know how many yards of concrete it would take.
The measurement is32 feet long and 6 feet wide with a depth of 5 inches. Could you tell me how to figure this or how many yards I will need so I will have an idea of the cost. Answered by Penny Nom. 





I am pouring cement 
20060822 

From David:
I AM POURING CEMENT
8FT. X 8 FT. X 4 INCHES
8FT. X 8FT. X 5 INCHES.
8FT. X 8FT. X 5 1/2 INCHES.
WHAT IS THE FORMULA?
Answered by Penny Nom. 





A concrete semicircle 
20060815 

From John: I have to figure out how many yards of concrete I need for a semicircle. I have a radius of 21 feet and the concrete is 4" thick. I took 3.14 x (21)^2 then divided by 40 to get how many yards of concrete but that doesn't seem right. Answered by Penny Nom. 





How many bags of concrete will we need to use? 
20060720 

From Sue: We are trying to pour some concrete
The area measures 26 ft long x 20 in wide. We want to pour the concrete 3 in thick.
One bag covers .41 cu. ft.
How many bags of concrete will we need to use? Answered by Penny Nom. 





Concrete for a chicken coop floor 
20060713 

From Chelsea: How much concrete for a chicken coop floor? The dimentions are 3 slabs, 30 feet long and 4 inches thick, 6 feet 6 inches wide. One slab is 41 feet long, 6 feet 6 inches wide, and 4 inches thick. Answered by Stephen La Rocque. 





Cement for a large patio 
20060713 

From Jim: I have a 60' by 100' patio. I am wanting to raise it 1 foot. The truck carrying the cement can only hold 10 cubic yards. How many truck loads would I need? Answered by Stephen La Rocque. 





Concrete for a porch 
20060704 

From Sherry: I'm having a porch,the measurement is 3in.deepx10ft.wide x52ft.long how many yards is that i need? the concrete truck wont deliver unless it 5yards or more. Answered by Stephen La Rocque. 





I have a trench to fill with concrete 
20060611 

From A builder: i have a trench to fill with concrete the size is [57 feet long .x 18 inches wide. x 39 inches high.]would like to know how much concrete should i order. Answered by Penny Nom. 





Putting in a sidewalk 
20060531 

From Sandra: I am putting in a sidewalk the measurements are 12 feet by22 inches ,by 4inchs how many bags of cement will I need? Answered by Penny Nom. 





A concrete driveway 
20060521 

From Diane: I am trying to estimate how many cubic yards of concrete I will need to pave my driveway. I have an area that is 30 ft wide by 25 ft long and then goes into an area that is 10 ft wide by 219 foot long. I would like to make this 4 inches thick. How many cubic yards of concrete will it take to do this? Answered by Penny Nom. 





Cubic yards of concrete 
20060321 

From Shane: I need to know how many cubic yards of concrete is needed for a 4" thick driveway and 18' wide and 27' long. What formula do I need to use? Answered by Penny. 





Cubic feet to cubic yards 
20060312 

From Sandy: We need to convert feet to cubic yards. The concrete is 45ft by 10ft by 4ft. How many cubic yards is this? Answered by Penny Nom. 





A concrete slab 
20060213 

From Cheryl: A concrete area that will be used for picnic benches will measure 20 ft on each side. The concrete slab will be 8 inches deep. How many cubic feet of concrete will be needed to construct the patio? Answered by Penny Nom. 





Concrete in a foundation 
20060208 

From Philippe: Can you please help me determine how many cubic yard of concrete I need to purchase for a foundation that is 50' by 25.5 by 8' height and how many cubic yard would I need for the slab that is 50' by 25.5 by 0.5 Answered by Penny Nom. 





Concrete tubes 
20060114 

From Paul: I have 15 tubes. Each tube measures 12in.x 48in. I have to fill each one with concrete. How do I figure how many cubic yards of concrete I will need? Answered by Penny Nom. 





A concrete patio 
20051206 

From Anne: If you are making a concrete patio 4 inches thick, what is the area of the largest patio you could make if you ordered 2 cubic yards of concrete? Answered by Penny Nom. 





Cubic yards of concrete 
20051106 

From Cyndi: I have a carport that is 20' x 31' and a driveway that is 12' x 18' that requires a 3" depth of concrete.
I need to now how many cubic yard it will need to complete these two areas. Answered by Penny. 





A concrete slab 
20050729 

From Armand: I am
planning to pour a concrete slab over an existing slab in my garage
which is very uneven, with a depth variation from 2 1/2 inches to 5 1/2
inches from level. I'm afraid to over estimate concrete since it will be
wasted but worse, I'm afraid to underestimate. I've broken the slab down
into four sections with the following being the four dimensions, can you
tell me how much concrete I will need please, I would very much
appreciate your help.
1 6ft/8in x 20ft x 4 1/2 in. thick
2 16ft/10in. x 20ft x 3 1/2 in. thick
3 6ft/6in. x 16in. x 5 1/2 in. thick
4 6ft/6in. x 8ft. x 4in. thick
Answered by Penny Nom. 





Cubic feet of concrete 
20050523 

From Robert:
REQUIRED CUBIC FEET OF CONCRETE TO POUR AN EXTENDED PAD
8 FEET X 8 FEET X 6 INCHES DEEP
Answered by Penny Nom. 





The cost of concrete 
20050308 

From Cathy: Compute the cost of ready mixed concrete for a driveway 70ft long, 10ft wide, 3 inches deep at a cost of $30.00 per cubic yard Answered by Penny. 





The weight of some concrete 
20050215 

From Jordan: I have 6 acres of concrete that is 3 feet thick the aprox. weight of 1 cubic yard of concrete is 4024 pounds I am trying to find out how much my 6 acres weighs. fortunately my concrete is 3 feet deep. Answered by Penny Nom. 





Cubic yards of concrete 
20040929 

From Tanya: We are starting up a new business and for the business we will be required to order concrete for various shapes. Right now we have a job that requires a concrete slab that a decagon it is 1403/4" from flat side to flat side, 74" from point to center and each flat side is 46" The pad should be 4" thick with 12"x12" continuous footing. Answered by Harley Weston. 





Cubic yards 
20040901 

From Garnet: I have the dimensions of 16 feet by 10 ft and 3 1/2 inches deep how much concrete do I need. Answered by Penny Nom. 





Cubic yards 
20040712 

From A homeowner: I would like to know how many cubic yards are in the following; 20 ft wide x 80 ft long x 4 inches thick?
I am trying to figure out how much concrete I will need to pour for a driveway. Answered by Penny Nom. 





Yards in a concrete driveway 
20040427 

From Bobbi: I am wondering how many yards of cement I need for a 49 by 45 area, 5 inches thick. I am a stay at home mom who is not very good at math and I want to pave my drive way. Also what would the yardage be for a 6 inch thick drive way with the same area. Answered by Penny Nom. 





Cubic yards in a concrete wall 
20040118 

From Danny: I am studing for my contractors exam. I am haveing truble with a few questions. I have the answer to the problems but I dont know how to get them my self. please help
How many cu. Yds. Of concrete are in a wall that is 150' long and 8'4" high an d 8' thick Answered by Penny Nom. 





Cubic yards of concrete 
20031102 

From John: The foundation is 20' X 20' and the depth is 6", there are also three footings that are 20' X 12" X 12" each. Can you show me the equation to figure out how many yards of concrete I will need to pour the footings and foundation. Answered by Harley Weston. 





Yards and cubic feet 
20030811 

From Sonya: How many cubic feet are in a yard? Answered by Penny Nom. 





Cubic yards of concrete 
20020824 

From Michael: if you have a 10" dia pipe 8' long how many cubic yards would it take to fill with concrete. how how would you go about figuring it out. and also if you would how many cubic feet, cubic inches in a cubic yard. i know you don't need to answer, seeing i am not in school, but would appreaciate it. Answered by Penny Nom. 

