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Customer questions and answers for
Quikrete 60 lb. Concrete Mix

The Quikrete 60 lb. Concrete Mix can be used building or repairing foundation walls, sidewalks, curbs, steps and ramps. For pouring concrete 2 in. thick or more, this concrete mix consists of a uniformly blended, properly proportioned mixture of stone, gravel, sand, and Portland cement.
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Customer questions and answers for Quikrete 60 lb. Concrete Mix

Question

How many 60 pound bags of concrete mix do I need for a 21 foot diameter circle x 3 inches thick?

Asked by
cbbuilder
chatsworth, california
about 60 lb. Concrete Mix on
April 5, 2014
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answer 1
Asked by
QUIKRETEProductExpert
April 14, 2014
A 60 lb. bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. A circular area having a 21 foot diameter (10.5 foot radius) is 346 square feet. To cover with 0.25 feet (3 inches) of concrete will require approximately 86.5 cubic feet, or approximately 192 60 lb bags of concrete. Note that a standard slab is 4 inches thick, which would require approximately 118 cubic feet, or approximately 262 60 lb bags of Concrete Mix. Yields are approximate, and will be affected by waste, uneven sub-grade, etc.
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answer 2
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
194.7 bags.
Here's the calculation
You've got 86 cubic feet x 135lb of concrete per cubic foot = 11,683lb
11,683lb divided by 60lb per bag nets 194 bags. I hope you have help.
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Question

Can I use this project on a particle board?

Asked by
Linnea
Hollywood
about 60 lb. Concrete Mix on
March 1, 2014
Can I use this project on a particle board that used to be covered w. laminate (functioning as a kitchen counter top)?
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Your question is very vague. You can pour concrete on top of particle board, but why?
If it is a form, make sure it is properly supported. If you are making a concrete kitchen counter top, I recommend a book on concrete kitchen counter tops, You will have to search for it, but it has some very good information about pouring your own. Hope this helped.
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answer 2
Asked by
QUIKRETEProductExpert
March 6, 2014
QUIKRETE Concrete Mix may be applied over plywood if a metal lath is first installed to allow a mechanical bond to form, as the Concrete Mix could not bond directly to the plywood. QUIKRETE Concrete Mix should NOT be applied over particle board as the particle board may swell, deform, and lose strength if exposed to high levels of moisture. Concrete will also not form a bond with particle board. Depending upon the ultimate surface you wish to have for the counter top, installation of a cementitious backerboard over the particle board may allow greater flexibility in regards to the final surface you can apply. Note that it is not advisable to drive nails or screws into particle board, as they can provide an inlet for moisture, and / or cause the particle board to lose its shape when indentations are made on its surface. The use of QUIKRETE Polyurethane Construction Adhesive to adhere cementitious backerboard to the particleboard may be an option. You may wish to obtain further technical support directly from QUIKRETE at 1-800-282-5828.
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answer 3
Asked by
Freddiefixer
Texas, USA
March 4, 2014
I would not, moisture and particle board do not go together. I would use treated plywood.
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answer 4
Asked by
Trouble
Las Vegas, NV, USA
Home Improvement Profile: DIYer
March 3, 2014
If the question is "Can I use particle board as a temporary form for concrete" the answer is yes.
If the question is "Can I pour this type of concrete on top of particle board" the answer is no.

There is a lot of moisture in the concrete mix and if it is under the concrete the moisture and the weight of the concrete could weaken the particle board to the point of failure.

Using the particleboard a temporary form for curves etc can work if it is properly braced.
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Question

How many 4x4 fence posts will one bag cover? Like 1 ft. deep, regular size fence post holes?

Asked by
Cristi
Springfield, OR
about 60 lb. Concrete Mix on
March 4, 2014
I need to put in about 8 fence posts and don't know how much concrete I need to buy. Thanks!
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Calculate your cubic feet and multiply by 135lb per cubic foot of concrete.
Divide by the weight of each bag.
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answer 2
Asked by
Boog
Tulsa
April 1, 2014
I used (1) 60lb bag on an 18" deep x 8" dia. hole with a 4x6 Pole and it was 4" short of filling to the top. Your hole will probably be 12" depth x 6" dia. which would take ~3/4 of a 60lb Bag.
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answer 3
Asked by
QUIKRETEProductExpert
March 10, 2014
When placing fence posts, the depth of the post hole should be one-half of the above-ground post height, for example: For a 4' above ground post, use a post with an overall height of 6 feet and place 2 feet (24”) in the ground. For holes that are 24” deep, with a 12” diameter, and a 4” x 4” square post placed within, a single hole would require approximately three 60# bags of mixed QUIKRETE Concrete Mix. 8 posts will require approximately 24 bags. These are estimates and will vary based upon waste, uneven subgrade, etc. Note that the QUIKRETE Concrete Mix must be blended with water before being added to the hole.
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answer 4
Asked by
BigE
Forest, VA, USA
March 7, 2014
If you're setting 4x4 posts, you're gonna want to dig your holes deeper than 1 foot. The Quikrete folks will tell you to dig a hole half as deep as the height of your post out of the ground. (e.g., for a 6 foot high post you would need a 9 foot long 4x4 with 3 feet of it being buried in the hole). While that will certainly be sturdy, I would go with 8 foot posts and bury them in 2 foot holes. Having said that, a 60lb. bag would do one hole and then some - maybe 3 bags for 4 holes - assuming the holes are about 9-10 inches in diameter. The Quikrete website has a good quantity calculator on it. Good luck.
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Question

how many bags of Quickcrete will I need to do a 4'x8'x3" slab?

Asked by
cookie
pomona ca
about 60 lb. Concrete Mix on
February 14, 2014
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Calculate your cubic feet and multiply by 135lb per cubic foot of concrete.
Divide by the weight of each bag.
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answer 2
Asked by
QUIKRETEProductExpert
February 24, 2014
A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. A 4 foot x 8 foot x 0.25 foot (3 inches) will require approximately 8 cubic feet of concrete, or approximately 18 60 lb bags. Note that slabs are typically 0.34 feet (4 inches) thick. A 4 inch thick slab of the same area would require approximately 11 cubic feet of concrete, or approximately 24-25 60 lb bags. All yields are approximate and will vary based upon waste, uneven sub-grade, etc.
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answer 3
Asked by
BigE
Forest, VA, USA
February 15, 2014
There is a simple to use concrete calculator on Quikrete's website.
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answer 4
Asked by
krstphrgreen
Pawtucket, RI, USA
Home Improvement Profile: DIYer
February 15, 2014
That would be 8 cubic feet. From what I see Portland cement weighs about 145l/ft3. I would verify that number as it varies due to mixture aggregate, dry and chemical mixtures and the like. The density is variable due to the amount of water and air trapped inside. This is by design. I would say you need ABOUT 19 60# bags. 19.3 using 145lbs as reference.
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Question

How many bags of concrete will I need for a sidewalk 50 feet by 3 feet?

Asked by
a8200
vallonia indiana
about 60 lb. Concrete Mix on
February 22, 2014
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Calculate your cubic feet and multiply by 135lb per cubic foot of concrete.
Divide by the weight of each bag.
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answer 2
Asked by
CaponeMI
Dearborn, MI, USA
March 25, 2014
If you go 3 inches thick, you would need 63 80lb bags or 84 60lb bags
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answer 3
Asked by
QUIKRETEProductExpert
February 24, 2014
One 60 lb. bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet when placed. A sidewalk having dimensions of 50 ft x 3 ft x 4 inches (or 0.34 ft) requires approximately 51 cubic feet of concrete, or 113 60 lb. bags. This is an estimate and will be affected by uneven sub grade, waste, etc.
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answer 4
Asked by
BigE
Forest, VA, USA
February 24, 2014
Quikrete has an easy-to-use calculator on their website.
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Question

how many 60 lbs. bags would I need

Asked by
cbbuilder
about 60 lb. Concrete Mix on
March 4, 2014
to fill a circle with a inside diameter of 36" , outside diameter of 48" (6" wide between each tube), x 25" deep"
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Calculate your cubic feet and multiply by 135lb per cubic foot of concrete.
Divide by the weight of each bag.
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answer 2
Asked by
CaponeMI
Dearborn, MI, USA
March 25, 2014
To fill in 36 inches wide 25" deep you need 35 bags of 60#
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answer 3
Asked by
QUIKRETEProductExpert
March 10, 2014
A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. To fill a single 25” (2.1 ft) deep hole having an outer diameter of 48” [radius = 24” (2 ft)] and an inner diameter of 36” [radius = 18” (1.5 ft)] will require approximately 11.6 cubic feet of concrete, or 25-26 60 lb bags of concrete. Yields are approximate and will vary based upon waste, uneven sub-grade, etc. Note: It is unclear how the ‘6” wide between each tube’ fits into the scenario. You may wish to obtain further technical support directly from QUIKRETE at 1-800-282-5828.
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Question

i will be pouring a 12 inch width by 6 inch deep by 20 feet long how many 80 lb bags Im need ?

Asked by
greengarden2012
new jersey
about 60 lb. Concrete Mix on
March 24, 2014
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Calculate your cubic feet and multiply by 135lb per cubic foot of concrete.
Divide by the weight of each bag.
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answer 2
Asked by
Boog
Tulsa
April 1, 2014
About (10) 60Lb Bags or (7.5) 80Lb Bags
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answer 3
Asked by
QUIKRETEProductExpert
March 25, 2014
A pour that is 1 foot x 0.5 foot x 20 feet will require approximately 10 cubic feet of concrete. A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete, while an 80 lb bag of QUIKRETE Concrete Mix yields approximately 0.6 cubic feet of concrete. Approximately twenty-three 60 lb bags, or seventeen 80 lb bags will be required. All yields are estimates and will vary based upon waste, uneven sub-grade, etc.
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Question

14 X 14 patio 4" thick with a 30" fire pit in the center. How many bags? (I knew I should have paid more attention in math class)

Asked by
MathematicallyChallenged
about 60 lb. Concrete Mix on
April 3, 2014
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
April 8, 2014
Need more information. Is the fire pit round, square or other?
Here's the calculation, figure out the cubic feet.
Concrete weighs 135lb per cubic foot, so calculate the weight you will need.
Divide the total weight of your slab by the weight of each bag.
Or, just take the cubic feet and multiply by 2.25 for the number of bags.
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answer 2
Asked by
QUIKRETEProductExpert
April 4, 2014
A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. A 14 ft x 14 ft x 0.34 ft (4”) patio minus a circular “gap” left for a fire pit of radius 1 ¼ ft (15 inches), would require approximately 66 2/3 cubic feet of concrete MINUS approximately 1 2/3 cubic feet of concrete for the fire pit gap, which will total approximately 65 cubic feet, or approximately 144 60 lb. bags. Yields are approximately, and will vary based upon waste, uneven sub-grade, etc.
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answer 3
Asked by
Trouble
Las Vegas, NV, USA
Home Improvement Profile: DIYer
April 3, 2014
Each bag is approximately .5 Cubic Feet

The math goes

14 feet X 14 feet = 196 square feet
196 square feet / 3 = 66 cubic feet (Note: Divide by 3 accounts for the 4 inch thickness)
66 cubic feet * 2 bags/ cubic foot = 132 bags

132 Bags - Note I did not account for the fire pit and I would recommend that you don't either. This gives you a few extra bags to allow for errors (dropped bags, uneven base, stuff on your shoes and clothing) and any left overs you can take back to the nice folks at Home Depot.
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Question

how many 60 lbs bags saccrete for pour that is 4 inches thick 9 inches wide 144 inches long

Asked by
gregg
bowie arizona
about 60 lb. Concrete Mix on
January 27, 2014
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answer 1
Asked by
QUIKRETEProductExpert
February 3, 2014
A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. A pour that is 0.34 feet (4 inches) x 0.75 feet (9 inches) x 12 feet (144 inches) will require approximately 3 cubic feet of concrete, or approximately seven 60 lb bags of QUIKRETE Concrete Mix. Yields are approximate, and will vary based upon waste, uneven sub-grade, etc.
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answer 2
Asked by
Anonymous
California
Home Improvement Profile: DIYer
January 28, 2014
That's 5184 cubic inches or 3 cubic feet. Each cubic foot of concrete weighs 135lb, so you need 405lb of concrete. 60lb per bag, better buy 7 or 8. Home Depot is good about returns and you wouldn't want to run out if your depth varies.
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Question

What are the dimensions of the 60# bag

Asked by
Bsbobup
Moran,Mi
about 60 lb. Concrete Mix on
November 23, 2013
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
January 28, 2014
The bag is about 4" x 10" x 18". It holds 0.444 cubic feet.
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answer 2
Asked by
QUIKRETEProductExpert
November 27, 2013
QUIKRETE Concrete Mix is not intended to be used for purposes other than as a blended concrete. If stacked bags of product are needed for an erosion control or similar project, please utilize QUIKRETE Rip Rap which is designed specifically for this purpose. See www.quikrete.com for project advice. Concrete Mix bags will not cure properly in stacks. A 60 lb bag of QUIKRETE Concrete Mix as stacked on the pallet is approximately 12 ¾ x 17 ¾ x 4 ½ inches. This will vary regionally based upon raw materials, as well as the amount of handling an individual bag has incurred.
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Question

how many bags 60lbs. need for to do 9 sq.feet and 6 inches depth

Asked by
concreteready
miami
about 60 lb. Concrete Mix on
November 21, 2013
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
January 28, 2014
That's 4.5 cubic feet. You need 135lb of concrete mix for every cubic foot. You need 607.5lb of concrete, or just over 10 bags. Buy 11 and if you don't use the last one, return it. You don't want to run out.
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answer 2
Asked by
QUIKRETEProductExpert
November 22, 2013
A 60 lb. bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. For a 9 square foot area that is 6 inches (0.5 feet) deep, approximately 9 x 0.5 = 4.5 cubic feet of concrete or 10 60 lb. bags of concrete will be required. Yields are approximate and will vary based upon waste, uneven sub-grade, etc.
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answer 3
Asked by
KenHDOC
Orange, Ca.
Home Improvement Profile: Other
November 21, 2013
Hi Concreteready, I used the Quikrete calculator. The calculator shows you will need 10 bags of 60 pound quikrete.

Hope that answered your question.
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Question

how many bags for 17 cubic feet ?

Asked by
Aces
Indio, CA
about 60 lb. Concrete Mix on
December 12, 2013
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
January 28, 2014
Each cubic foot of concrete takes 135lb of mix. Sounds like you need 2295lb or 38.25 bags, if you use 60lb bags. Always buy more than you need, Home Depot will glady take back the unused bags.
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answer 2
Asked by
PizzaEater
January 23, 2014
A cubic foot of concrete weighs 135lb. 17 cubic feet weigh 2295lb. You will need 38 bags. Buy extra since you don't want to come up short and Home Depot will take back the ones you don't use
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answer 3
Asked by
pbro
CA
December 27, 2013
There is approximately 0.6 cu. ft. per 60# bag. So 17 cu. ft. requires about 28 bags.
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answer 4
Asked by
QUIKRETEProductExpert
December 19, 2013
A 60 lb. bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet of concrete. 17 cubic feet will require approximately 38 bags. This is an estimate and will vary based upon waste, uneven sub-grade, etc.
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Question

How much water is needed to add per sack ( The mix ratio) to acheive 4000psi?

Asked by
STANDARD
CA
about 60 lb. Concrete Mix on
October 15, 2013
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
January 28, 2014
It takes about a gallon per 60lb bag. Make it look like oatmeal. Add water slowly, there is a tendancy to add to much water because it helps if mixing by hand. If mixing by mixer, add only until the mix is flowing off the sides as the mixer turns. If you hear it falling off in clumps, it needs more water.
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answer 2
Asked by
QUIKRETEProductExpert
October 17, 2013
For a single 60 lb bag of QUIKRETE Concrete Mix, begin with 4 pints of water per bag. Add water as needed to achieve a 2 – 3 inch slump. Do not exceed more than 7 pints per bag. This product has a typical strength of 4000 PSI when mixed to a 2 – 3 inch slump.
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Question

after setting concrete for posting, what happen if it rains 12 hours later

Asked by
neet
fort worth texas
about 60 lb. Concrete Mix on
November 4, 2013
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answer 1
Asked by
Anonymous
California
Home Improvement Profile: DIYer
January 28, 2014
Don't worry about it, the concrete has set up and won't accept any more water.
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answer 2
Asked by
QUIKRETEProductExpert
November 8, 2013
QUIKRETE Concrete Mix is a standard setting concrete, so it will have a typical set time of approximately 4 to 6 hours if the temperature is approximately 70 degrees F. At higher temperatures, the set time will be somewhat faster, while at cooler temperatures, it will be slower. Since the QUIKRETE Concrete Mix should have achieved its set prior to it being rained on approximately 12 hours after being placed, no detrimental results from the rain are anticipated – check to see that the material is hard to the touch, and the post is firm.
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Question

I have a area 9' by 9' 4" thick

Asked by
Larry
SanTan Valley,AZ
about 60 lb. Concrete Mix on
September 21, 2013
How many bags of cement mix do I need if 1 bag Weighs 60lb?
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answer 1
Asked by
QUIKRETEProductExpert
September 30, 2013
A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet. A 9 foot x 9 foot x 0.34 foot (4 inch) application will require approximately 27 - 28 cubic feet of concrete, or 60 – 63 60 lb bags. This is an estimate and will vary based upon waste, uneven sub-grade, etc.
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answer 2
Asked by
Stan
PA
September 23, 2013
Total cubic feet of concrete that you need is 9 x 9 x .333, or 27 cu. ft.
Each bag of 60# mix will produce about .45 cu ft of concrete, which means that you will need about 60 bags.
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answer 3
Asked by
The Hungry Engineer
California
September 23, 2013
Here is how to figure that out.
Calculate the cubic feet, a cubic foot of concrete weighs 135 lb.
You have 27 cubic feet. 27 times 135 = 3645lb.
3645lb divided by 60lb per bag = 60.75 bags. I'd round it up and buy 4 or 5 more in case your depth varies. Home Depot is very good about taking back items that you don't use.
A quick way to calculate the number of bags ONLY if your slab is 4" thick, is square feet times 3/4.
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Question

I have a 12" Thick x 44" Diameter Pad I am getting ready to build, How many 60 lb Bags of concrete will I need? What is the formula?

Asked by
Curt
Wyoming
about 60 lb. Concrete Mix on
August 23, 2013
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answer 1
Asked by
QUIKRETEProductExpert
August 27, 2013
Radius = diameter / 2 = 44 inches / 2 = 22 inches = 1.83 feet. Thickness = 12 inches = 1 foot. The formula to use to calculate the approximate required volume of concrete is (Pi) x (radius) x (radius) x (thickness) = 3.14 x 1.83 x 1.83 x 1 = 10.5 cubic feet of concrete. A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet, so 10.5 cubic feet will require approximately 22 ¼ 60 lb bags of concrete mix. This will vary based upon waste, uneven sub-grade, etc.
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answer 2
Asked by
The Hungry Engineer
California
August 23, 2013
A cubic foot of concrete weighs 135lb.
Multiply the number of cubic feet by 135lb to get the weight of the concrete, and divide by the pounds in each bag.
For your pour, use the area of a circle, pi times the radius squared.
3.14 x 22" x 22" x 12" deep is 18237 cubic inches.
18237 divided by 1728 is 10.55 cubic feet,
10.55 cubic feet times 135lb is 1424lb.
1424lb divided by 60lb equals 24 bags.
Buy a few extra, Home Depot has a good return policy.
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answer 3
Asked by
Coots
Le Roy, NY 14482, USA
August 23, 2013
The volume of a cylinder is its height multiplied by the area of the circle. The area of a circle is Pi times its radius squared. Therefore: 3.14 times 484 ( this is 22 squared) = approximately 1520. Multiply 1520 times the height of 12" and you get 18,240 cubic inches. To convert cubic inches to cubic feet divide by 1728 since there are 1728 cubic inches in a cubic foot. 18240 divided by 1728 is 10.55....
A 60 pound bag contains .45 cubic feet of product. Divide 10.55 by .45 and the result is that you need 23.44 bags. Buy 24.
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Question

How many bags in a 10 inch tube 5 foot deep

Asked by
Roger
about 60 lb. Concrete Mix on
August 6, 2013
10". Diameter tube
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answer 1
Asked by
The Hungry Engineer
California
August 23, 2013
You have 2.72 cubic feet.
2.72 cubic feet times 135lb per cubic foot of concrete is 368lb of concrete needed.
If you buy 60lb bags of concrete, you will need a bit more than 6.
You could always stuff some more rocks in the wet concrete so you don't have to buy a full bag.
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answer 2
Asked by
Trouble
Las Vegas, NV, USA
August 21, 2013
About 7 bags.... The tube contains about 2.8 cubic feet and each 60 lb bag is .45 cubic feet.

Hope this helps
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answer 3
Asked by
QUIKRETEProductExpert
August 9, 2013
Each foot of a 10 inch diameter QUIK-TUBE requires approximately 1.3 60 lb bags to fill it. 5 feet will require approximately 6 1/2 60 lb bags.
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answer 4
Asked by
Coots
Le Roy, NY 14482, USA
August 7, 2013
The area of a circle is Pi times r squared, so 3.14 times 5 squared or 3.14 times 25 = 78.5 square inches.
Multiply the area by the height (60 inches). 78.5 X 60 = 4710 cubic inches.
There are 1728 cubic inches in a cubic foot. Divide 4710 by 1728 and we have 2.73 cubic feet.
I use 0.45 cubic feet per bag to calculate necessary volume. I suspect that the 60 pound bag was intended to approximate a half cubic foot, but 0.45 cubic feet is more conservative and works out in practice. So: 2.73 cu. ft. divided by 0.45 = 6.06 bags. 6 bags should be OK if you are careful. Be sure to vibrate or tamp and reinforce properly.
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answer 5
Asked by
Stan
PA
August 6, 2013
Volume would be Pi rsquared x h...radius is 5" or .42 ft...
So, volume would be 2.75 cuft...@ .45 cu ft/bag that would be about 6 bags (if my hs geometry memory is still valid...)
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Question

Can this product be used to pour into molds for making a concrete bench?

Asked by
jessicatracks
Chicago
about 60 lb. Concrete Mix on
June 4, 2013
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answer 1
Asked by
Trouble
Las Vegas, NV, USA
August 21, 2013
It can if you are looking for a rocky appearance for the finished product. I saw that Home Depot was carrying a fiber reinforced mortar mix that might work better. While it says you can do away with rebar, for something like a concrete bench the more support the better.
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answer 2
Asked by
Texan
West Texas
July 31, 2013
Yes, just remember to mix it up very well and when you pour it into the mold and to mix it more to get the smoth edges. No need to buy any special tools, a short 2x4 can be used to smoth it out. Buy a cheap garden tool to mix it up with.
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answer 3
Asked by
The Hungry Engineer
California
July 20, 2013
Yes, and you can add a stain if you don't want it to be gray.
http://www.quikrete.com/ProductLines/CementColor.asp
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answer 4
Asked by
QUIKRETEProductExpert
June 14, 2013
Yes, QUIKRETE Concrete Mix may be used for creating a concrete bench. Be sure to follow the water content recommendations - Utilizing too much water could also cause excess shrinkage, which could lead to hairline shrinkage cracks as it cures. Depending upon the environment in which you live, you may consider using QUIKRETE Crack Resistant Concrete Mix, which contains fibers and air entrainment for increased durability in freeze / thaw environments. The designs you are considering will suggest reinforcing stainless steel for any portion of concrete which spans vertical supports.
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answer 5
Asked by
Coots
Le Roy, NY 14482, USA
June 5, 2013
Yes, it can be used to pour into molds. Be careful to keep the mix stiff and either vibrate it into place or use a thin rod to thoroughly agitate the material as it is placed in the mold. You probably will still have voids when pulled from the mold. Reserve a little bit of the fines (no stones), make a paste and rub it into the voids of the partially cured cast. Next day is usually OK.
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Question

how many bags for 66 sq ft@ 3 in thick??

Asked by
scut
anaheim,ca
about 60 lb. Concrete Mix on
July 6, 2013
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4 answers
Answers
answer 1
Asked by
Trouble
Las Vegas, NV, USA
August 21, 2013
Works out to about 16.5 Cubic Feet. Each 60 lb bag is .45 Cubic Feet so you would need about 37 bags. Note add a few extra bags just in case the bottom is not pefect, an oops what ever. You can take the ones you don't use back but you will screw up your project if you run out before you are done.

Hope this helps
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answer 2
Asked by
QUIKRETEProductExpert
July 26, 2013
A 60 lb bag of QUIKRETE Concrete Mix yields approximately 0.45 cubic feet. An area of 66 square feet will require ~ 16.5 cubic feet or approximately 37 60 lb bags of concrete for a 3” layer of concrete. Note that standard slabs are 4” thick, which would require ~22 cubic feet or approximately 49 60 lb bags of concrete. These are estimates and will vary based upon waste, uneven sub-grade, etc.
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answer 3
Asked by
The Hungry Engineer
California
July 20, 2013
Here's how to calculate the amount of concrete to purchase.
A cubic foot of concrete weighs 135 lb.
3" is 1/4 of a foot. 66 times 1/4 = 16.5 cubic feet.
16,5 cubic feet times 135 lb per cubic feet equals 2228 lb total.
Divide the total weight by the amount in the bag you plan to purchase.
Always buy a few extra bags as it is not good to run out, and Home Depot will gladly accept any you bring back.
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answer 4
Asked by
THD Customer Service
July 16, 2013
Dear scut,

Thank you very much for your question.

I have reached out to manufacturer for more information and here is the response.

"37 sixty pound bags or 28 eighty pound bags."
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Question

After pouring concrete, how long should it be watered

Asked by
mordi
Valley center ca
about 60 lb. Concrete Mix on
April 9, 2013
How many days after pouring concrete should continue to mater it.
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3 answers
Answers
answer 1
Asked by
Texan
West Texas
July 31, 2013
The longer you water it the longer it will help cure it as well as make it less subject to cracks.
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answer 2
Asked by
The Hungry Engineer
California
July 20, 2013
At the end of the tpouring day, put a plastic drop cloth on it and weigh down the edges so the wind cannot blow under the plastic. This will keep the concrete moist. Leave it on for a week.
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answer 3
Asked by
QUIKRETEProductExpert
April 15, 2013
Moist curing should be started as soon as possible and should continue for a period of 5 days in warm weather at 70 dF or higher or 7 days in colder weather at 50 – 70 dF.
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