Driveway Cost; Concrete

[MossRoad]

So let's try this again. You basically want to find the area of a rectangle that is 12' wide by 220' long.
12 x 220 = 2640 square feet
Next, you want to make that area one half of a foot deep, right?
2640 square feet X 0.5' deep = 1320 cubic feet of concrete.
Next, you want to find out how many cubic yards of concrete you will need.
There are 27 cubic feet of concrete in one cubic yard.
So, divide 1320 by 27 and you get 48.888.

I think you need 48.888 cubic yards of concrete.

Someone please show me how it would be anything different, as I am mathematically challenged, but can sure picture a rectangular box in my head pretty easily. Thanks. :thumbsup:

 

[MossRoad]

So let's try this again. You basically want to find the area of a rectangle that is 12' wide by 220' long.
12 x 220 = 2640 square feet
Next, you want to make that area one half of a foot deep, right?
2640 square feet X 0.5' deep = 1320 cubic feet of concrete.
Next, you want to find out how many cubic yards of concrete you will need.
There are 27 cubic feet of concrete in one cubic yard.
So, divide 1320 by 27 and you get 48.888.

I think you need 48.888 cubic yards of concrete.

Someone please show me how it would be anything different, as I am mathematically challenged, but can sure picture a rectangular box in my head pretty easily. Thanks. :thumbsup:

 

[pwright]

Moss - you are using 220 ft for the length and not the original 200 that everyone else is using. That's why you keep coming out larger.

 

[RDrancher]

Moss - you are using 220 ft for the length and not the original 200 that everyone else is using. That's why you keep coming out larger.

Pretty funny that no one caught it before...including me! :laughing:

 

[Dr Dave]

I have a slope of around 400' that we are going to get paved with concrete, 6" thick, 12' wide. What do you think that would cost? Thanks.

What do you guys put in your coffee? :laughing::laughing::laughing:
The Pirate has a 400'x 12'x 6" pour, 88.89 yards.

Dave

 

[RDrancher]

Pirate edited his original post. See post #8 and #17.

 

[Dr Dave]

Lots of great info, thanks. I erred on the size though, it is 400 vs. 200. Ouch.

Sorry, I missed the edit to the first post, I thought you all were drunk:laughing::laughing::laughing: Go back and read the first post again.

Dave

 

[RDrancher]

Yep, I knew it was just a matter of time.

 

[MossRoad]

Moss - you are using 220 ft for the length and not the original 200 that everyone else is using. That's why you keep coming out larger.

THANKS!!! I feel better now. :confused3:
It just wasn't making sense. Does now. :thumbsup:

 

[RobertBrown]

Sooo....... I was reading this concrete driveway thread... and....... from outta nowhere ....a math class broke out.
It was the strangest thing I'd ever seen.......
Anyway...Does anybody know how to divide fractions?

 

[meburdick]

Sooo....... I was reading this concrete driveway thread... and....... from outta nowhere ....a math class broke out.
It was the strangest thing I'd ever seen.......
Anyway...Does anybody know how to divide fractions?

Yeah... Invert the denominator and multiply it by the numerator.

 

[MossRoad]

Wasn't it something like "Ours is not to reason why, just invert and multiply"?

 

[Pirate]

Well, my options are limited unless I win the lottery. 23K for 400' slope, 6" deep. 26K for the ENTIRE mess (7 or 8 hundred feet) to be asphalted, 4" base, 2" top. I have another option. Midway up the slope, the drive takes a 35deg turn. This is where most of the problem is. People slow down on the curve, and then speed up again. Plus, the tires on the turn are digging a nice groove. I can pave the turn area, 30' before and after, which would probably solve much of the problem, or as the mud man recommends, pave the upper section (200') and the curve. That way when I come into money, I can do the bottom portion. Another man said I should spread a pug mix on the remaining gravel which would lock it up for a few years. I'm think what to do. I had the bids at 12' but I suppose I could narrow the drive way down. I even wondered about paving two "tracks" up the drive for wheels, what about that idea? Leave the rest gravel? I have a 2" deep groove in the drive now, which is now deeper than the concrete ditch/trough that runs next to the drivel. So now the water, instead of washing off the side of the drive, is staying in the drive. I would have to build that groove back up with dirt or something and then regravel to fix that. No matter what, I hate long steep gravel driveways and will never have another one once I bail out of here.

 

[Western]

Sooo....... I was reading this concrete driveway thread... and....... from outta nowhere ....a math class broke out.
It was the strangest thing I'd ever seen.......
Anyway...Does anybody know how to divide fractions?

Like going to a fight and a Hockey game breaks out!!

Answer to the question,,,cut it in two,:shocked:

 

[RobertBrown]

What size gravel are you using, that causes you so much trouble? Perhaps you need larger size gravel?
Won't paving portions of the drive cause issues as the water runs down and washes out the bottom of the slab?
Asphalt's not cheap either, it requires a proper base and it's expensive to fix and maintain. The price of asphalt fluctuates with the price of oil so it's probably pretty high right now.

 

[RobertBrown]

Wasn't it something like "Ours is not to reason why, just invert and multiply"?

Invert one fraction and multiply across.

 

[Pirate]

What size gravel are you using, that causes you so much trouble? Perhaps you need larger size gravel?
Won't paving portions of the drive cause issues as the water runs down and washes out the bottom of the slab?
Asphalt's not cheap either, it requires a proper base and it's expensive to fix and maintain. The price of asphalt fluctuates with the price of oil so it's probably pretty high right now.

Crusher run, whatever the size is, very typical for all gravel driveways here in TN. It's the sharp turn on the steep driveway that is the problem. And good question about water under the slab. I suppose if I did just the turn area, I would make it minimum 6" and perhaps 8" so large trucks could cross it later.

 

[tracter]

89 yards is the answer in Australia cannot talk about the USA , knew a concretor who could do it with 45 yards , 6" thick on the edges and about 2" thick in the middle
400x12 = 4800 sq feet
4800/9 = 533.33 sq yds
534/6 = 88.88 Cubic yards
6 is the number of sq yds at 6" thick you get out of a cubic yard
As for price the rule of thumb in Australia is double the price of the concrete and that should be pretty close to the mark , that of course includes reo , sand and labour etc for the job

 

[lhfarm]

Not to hijack the thread, but I have the same problem - steep driveway with an almost 90 degree curve that is in constant need of repair. The drive is 1400' long and I can't afford to pave or concrete the entire drive. If I, as the OP has suggested, did just a short section that included the troublesome curve, would I encounter problems maintaining the "junction" of gravel and concrete? I'm thinking specifically of plowing snow.

 

[RobertBrown]

Not to hijack the thread, but I have the same problem - steep driveway with an almost 90 degree curve that is in constant need of repair. The drive is 1400' long and I can't afford to pave or concrete the entire drive. If I, as the OP has suggested, did just a short section that included the troublesome curve, would I encounter problems maintaining the "junction" of gravel and concrete? I'm thinking specifically of plowing snow.

Snow?
What is this......snow?
This is getting complicated.
Can you dig out the base and replace witha more substantial substrate, we like limerock(crushed limestone) or crushed alsphalt here.
I have no idea how this stands up to snow removal.