volume of quickcrete bag?

[goaliedad]

how much volume will a bag of quickcrete make? pouring footings for my deck- I need to know how many bags to buy.

I think I am going to use 16 inch tubes, setting 6x6 posts- this will take more work and concrete, but allows for more adjustment of post placement.

16 inch diameter, 6 inches thick- how many bags of quickcrete per post?

I looked at several websites, and am not seeing the information I want. Plus you guys are much faster than me searching for the answer.

Thanks in advance

[jppierson]

how much volume will a bag of quickcrete make? pouring footings for my deck- I need to know how many bags to buy.

I think I am going to use 16 inch tubes, setting 6x6 posts- this will take more work and concrete, but allows for more adjustment of post placement.

16 inch diameter, 6 inches thick- how many bags of quickcrete per post?

I looked at several websites, and am not seeing the information I want. Plus you guys are much faster than me searching for the answer.

Thanks in advance

There is a chart here to assist in calculating your needs...
https://www.homedepot.com/p/Quikrete-80-.../100318511

So pi * 8^2 (radius of your footing) in inches divided by 144 to get square feet each pad is 1.4 sq ft for each pad. The chart says for each 2 sqft you will need 2ea 60lb bags, or 1.5ea 80lb bag. Hope this helps.

[goaliedad]

Thank you!!!!..........!!!!!!!

[EightFingers]

Shouldn’t that be cubic feet?

[carwashguy]

16 inch diameter, 6 inches thick- how many bags of quickcrete per post?

6" thick?   You don't have to go below the frost line in Michigan?   My footings have to be 48" here in Massachusetts.

[K. L. McReynolds]

I poured a back deck step extension and used that chart. I was half a bag short. Use the chart, but allow for needing more.

[Roly]

I poured a back deck step extension and used that chart. I was half a bag short. Use the chart, but allow for needing more.

 If you use the info they supply for the volume of a bag,  0.45 cu ft for 60 lb & 0.6 cu ft for 80 lb bag it will be short for the chart also.  As you say add some if using the chart.   Roly

[goaliedad]

car wash guy the footing will poured in the bottom of a 54 inch deep hole. 48 inches of a 6x6 will be buried, setting on top of the footing.
The deck will be about 10 feet above grade- the buried portion will give the posts good stability