You are watching: How many cubic feet in a 94 pound bag of portland cement

### AuthorTopic: Volume that concrete indigenous one bag of Portland cement (Read 61404 times)

n74tgSenior MemberPosts: 576Hot Springs, AR
I'm do the efforts to figure how numerous bags the Portland come buy come mix the concrete for my front porch. I need right at 14 cft of concrete. I'm utilizing a 3:2:1 mix (rock, sand, Portland). As 3+2+1 = 6 and also I need roughly twice that in volume, I'm figuring around 2.5 cft of cement. The concern is "how numerous cubic feet" that Portland (Type 1) in a 92 lb bag. I discovered two various numbers on the internet. One says Portland weighs 1506 kg/m3 (cubic meter), which converts to 93.85 lbs/cft, therefore a 92 lb bag is best at 1 cft of Portland. The various other number states Portland is 3150 kg/m3, which is about twice the very first number. Everyone got any type of experience with this. Maybe another method to asking this is one bag of Portland, if utilizing a 3:2:1 mix returns how plenty of cft the concrete. Thanks
If you walk to Decks.com and click on the calculator tabs in ~ the top, you can do part figuring there. It gives calcs for 60 and 80 pound bags. But it additionally gives volume.I plugged in and a cubic yard will certainly require just over 40 bags of 80 lb bags. Then if you plugin a cubic foot, that will call for 1.5 bags the the 80 lb concrete. The volume is .04 cu yard.I execute not understand if this help or not.mt
Thanks Mike, but that website gives me the information I currently have; in other words volume the concrete needed. The variety of 40 or 80 lb bags is because that premix concrete (already consists of sand and gravel). Ns mix mine from raw ingredients due to the fact that it is considerably cheaper the way.
I remember hear the concrete plant owner try to describe to me what the different mixes were. Something to the effect that a 4 bag mix to be 2,000 PSI, 5 bag
2500 and each bag included ups the PSI by 500. That was because that a Cu yd. Ns think gravel or aggregate constitues around 60 % mix with water adding around 15% the the mix. Give your regional redy mix plant a call and maybe get some answers. Our is real beneficial well at the very least to me anyway as I have probably bouight 150-200 yards in the critical 10 year or so. Tiny stuff I usually mix my own. Don't really have the numbers as i just have actually the three significant components and also mix what i need. Much more of a guestimate really. However nothing yes, really goes come waste.I am choose you . I Googled some for the prize by basickly they to be sponsered through pre-mix and not cement plus various other portions come make.

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