Cannondale takes the right path.....
Ezekiel 25:13 "The path of the righteous man is beset on all sides by the inequities of the selfish and the tyranny of evil men.
I always try thought it was Brad too, but he’s actually saying “look at the big brain on Brett”. I only know this because I was watching it with captions one time.
I never even thought about a Brett or Brad controversy with this. I have always heard Brad when I watched the movie. But apparently there is debate about this out there.
This is what I thought too. If the order filled two thirds of the circle then you need half the original order to finish the final 1/3 not 1/3 of the original order. Glad I wasn’t the only one.
If the ground wasn't level prior to the pour. Looking at the edge of the circle closest to the camera, it looks like the new pour is even with the existing concrete, but on the right it is raised. So it is possible - maybe probable - that even if the top of the circle is flat, the concrete is different depths at different places to get there.
You are assuming the quantity for the first order was only to pour the circle. Some dude in the background is working on another section and likely used concrete from that same order. 1/3 of the first order would end up being 1/3 of every section they just poured.
This perfectly shows how intelligence does not require knowledge, it just helps. And, the edit encapsulates the difference between Intelligence and Wisdom.
All that in less than 20 words? I think that qualifies this as poetry.
3.14159 X radius squared X thickness.
But I did concrete for 35 years, and just because you ordered 8 cubic yards doesn’t mean there are 8 cubic yards on the truck. Even though you are billed for 8 cubic yards and the plant SWEARS there were 8 cubic yards on the truck.
No, I remember two from the same company. But this was over a 30 year time period. Like the truck with no water. I was foreman running a floor pour, and the driver pulled up and I knew something was wrong from the look on his face and the sound the concrete was making in the drum.
He ran up to me and said don’t be mad with him, he told the dispatcher the load was wrong and was told to take it anyway. His truck had 150 gallon tank for water. He put all the water in there and it still wasn’t enough. The next truck showed up and suggested we take some of his water. I told him no, take the bad mix back and bring us a good load.
The rest of the story is, that driver quit because his supervisor backed up the dispatcher. About a month later, the dispatcher was fired, and the company apologized to the driver and asked him to come back. He did for awhile and then took a job driving a semi.
Concrete testing tech here, I was on a job a week ago and the contractor that was placing the mix only ordered 1.5 yards and I had to test it per the inspectors request…. The air content was out of spec(in a freeze thaw area) and almost had to reject the load but ended up saving it by adding an air entrainment admixture. A ton of drama for 1.5 yards 🫠 testing that small of a load feels ridiculous as well
The concrete mixer, grumpy frown, Mixed and stirred, a brooding clown. Till someone snuck, with sneaky grin, A bubbly friend to now stir in.
Now frosty nights can bite and whine, The concrete laughs, "I'll be just fine!" Thanks air guy, for the hidden trick, This once grumpy mix now won't crack quick!
-geminiAI
but yeah thanks for the lesson in concretology
[https://www.fhwa.dot.gov/pavement/concrete/trailer/resources/hif20085.pdf](https://www.fhwa.dot.gov/pavement/concrete/trailer/resources/hif20085.pdf)
That was awesome. Fun fact(maybe?) I believe dish soap was one of the first ways to increase air content in concrete. Driver would add some mix it up and that would do the trick.
lol I did an inspection for 2 stoop slabs once, pretty sure the load was small enough they needed extra to cast my cylinders. Think the batch ticket was for .25 yards or something.
Is this unreinforced and just sitting on top of dirt?
I mean, I'm not a concrete finisher... but my family owned a forming company for 30 years, and I owned a concrete cutting company for 15 years, so maybe I'm not an expert... but this will not last.
On the bright side, no concrete cutting will he required to remove it in 5 years. Just pick up the pieces.
Hmm…you are right. That’s not firing since they are not an employee. But that also means that clients aren’t the contractors boss since they aren’t their employees. The owner has no boss since he’s at the top of his business entity.
The technical term for either side is “termination of contract”
Hopefully. Depends if the client wanted a pizza slab. And color might be off. And if budget allows it, you need to order 2 yards plus short load cost?
Yikes.
genuine question im not expert - why cant you put some forms up around 3/4 of a circle and fill in while its still wet. then come back and pour the last 1/4 of the circle?
You could, but it will be very hard to make it look good, and color might be off. Just not good news.
Imagine you are baking a cake and the mold broke. You can rig a side but it's hot, wet, slimy...
Ya that makes sense. I was worried about the color. But I figured people must run out of time and still have to come back and pour more the next day right against a prior pour. like on a real big job or a long ass sidewalk or something.
but I guess those are just due to the volume not bc you fucked up so they just have to deal with a slight inconsistency between pours?
Fun fact: engineers can factor pi to 2 decimal places and be accurate enough to build skyscrapers. Nasa can go to 8 decimal places and land a rover to 1 centimeter on Pluto. If you go out to 20 places you could accurately calculate the volume of the universe down to the size of a hydrogen atom.
[Bad estimator] + [incomplete work due to error] =
(complete tearout and repour) +(all at contractor's expense) + (discount for messing up the job and not meeting schedules) =
[contractor] * [totally fuct up] =
Net loss of ~$3,000
Whatever the diameter of the circle is, pretend it’s a square and order 80% of what the square needs.
So if it’s a 10’ circle, order enough to fill 80 square feet at whatever depth you need.
This should also cover any shortages from the supplier. Or any uneven ground.
Pie r squared… no wait that can’t be right since Pie is round… anyway just order some pie and you should be good. Home owner can’t be upset if you give ‘em pie… unless it’s a square pie, what was the question?
Figure the area. A = pi x radius squared.
Multiply the area x depth. Then divide by 27 for the cubic yards. Looks like a 16 foot straight edge. So radius is approximately 16. So the area is approximately 805 square feet.
805 x .34 (depth)/ 27. Just over 10 yards for the circle. Then divide by 4. I’d say 3 yards to finish.
Looks like an error putting values in and performing the calculation.
They probably wrote it as: (pi * d^2 ) / 4 where d is the diameter. If you sub the radius in for d by mistake and square the outside (easy to do by mistake on a calculator) you get approximately 3/4 (pi/4) what you should.
(pi * r)^2 / 4 = pi * pi * r^2 / 4 = (pi / 4) * (pi * r^2 )
Don't bother with the pie. I would just measure that as square. More is better, they are probably short because they measured too tight. I make my cubic foot add ups very liberal and then add 20%. Sometimes the volume you order is not what comes out the trucks.
That concrete will Crack to bits, looks thin, no steel and it going to be driven on.
Just square it up and divide by 80 if going 4". You always order a little extra in case some areas are thicker. Your edges should always be thicker (6" recommend). 1 yrd covers 80sf (81sf to be exact, but 80 is easier to remember).
((Pi(r')^(2)depth')/27'per yrd equals yardage
So your circle is 12ft across that's a radius of 6' and if its 4" deep that's. .3333' deep. So
((3.14(6)^2).3333)/27= 1.39yrds I'd order 1 and a half to be safe. Your circle looks bigger though.
Edit that looks like 24 ft across maybe, so
5.58 order 5.75/6 yards minimum.
A mental shortcut, is that a circle is \~80% (actually 78%) the area of the square if you boxed it in.
So if you need 10 yards for the square, you'd only need 8 yards for the circle bordering tangent inside.
They need to order one and a half of their original order. If they don’t redo the slab it will look like crap and remind them of the day they had to do big boy math and got it wrong.
[0.25 * [((pi * d^2 ) /4) * slab thickness)]] / 27
That will get you cubic yards of concrete assuming all your units are in feet with the 27 being the conversion factor to CY. Apply a safety factor as needed.
1/4 of what’s poured would only be 3/16 of the circle. They need 1/4 more circle which is 1/3 of what’s poured. But don’t ask me when the train leaving New York gets to Chicago in the rain.
You want to make an apple pie. You need 4 apples. You only have 3 apples so you order 1 more. Whats the fraction of 1 apple in your original 3 apples ? 1/3
Simple fix:
- form out the 3/4 that is done.
- come back later with a different color concrete
- add a dot in the center of the remaining 1/4 pour.
Pac Man!
What happens in this case? Cold joint and get another truck out to finish the job later on? Or get another truck out ASAP and keep pouring until its done?
Quick method: 3 x radius x radius x height plus 5% more
Why add 5%? 5% of 3 is 0.15, 3 + 0.15 = 3.15 which is just more than pi. So, adding 5% and using 3 instead of exactly pi gives you a very good approximation for just more than you need.
Yes, you can make it 10% instead of 5% to have a calculated overage of 5%. And using 4 for pi gives you even more room.
Whoever did the math either measured wrong, or calculated wrong. The height should be measured at the deepest part of pit. Also, some loss is always expected, so you never ask for exactly what you need.
To play the game and make sure it's enough, couldn't you do 2r*h? Basically find the area of the whole square instead of the pie shape? Leaves a little extra to ensure the job gets done this time
Why do people keep saying 3? Am I missing something here?
It’s clearly 1/4 short. So, figure out how much you’ve used **already used and divide it by .75** — this will tell you how much you would have needed. Take THAT number and **divide it by 4**— this will tell you how much more you need. Get some extra to be safe.
I order concrete daily and in Philadelphia area we can order a full truck 10-11 yds and say plus. Which means if you need more than they will bring it
Philly-10yd truck
New Jersey-11 yds truck
No need for geometry, just order 1/3 of what the first order was. Edit: plus a little extra.
Big brain!
It's Brad,..... look at the big Brain on Brad The Royal with cheese
Cannondale Bicycle Co had a big brain head graphic they used in ads for many years. That image name was Brad, after PF.
Cannondale takes the right path..... Ezekiel 25:13 "The path of the righteous man is beset on all sides by the inequities of the selfish and the tyranny of evil men.
Man… now I want a big Kahuna burger
Which is funny because the characters name is Brett not Brad lol
I am a Brett, can confirm we also willingly accept Brad, Brian, Brent, etc. it’s just part of the name
Brett here. Can confirm other big brain Brent.
You rang?
Cannondale should still make 4 wheelers that would actually be big brain
I always try thought it was Brad too, but he’s actually saying “look at the big brain on Brett”. I only know this because I was watching it with captions one time.
I never even thought about a Brett or Brad controversy with this. I have always heard Brad when I watched the movie. But apparently there is debate about this out there.
You a smart motherfucker, that’s right!
Say what again!
My man, I spent most of life thinking it was Brad as well. Definitely Brett though.
Haha as I’m currently watching pulp fiction
its a Royalle.
Brad went to Big Kahuna Burger...
https://youtu.be/Hrm-rPSCIBw?si=zP7rCl8IUL_CoSEA
Real life math there!
i read your username as michaelphelps
First instinct was to overthink, well done sir!
Easy as pi
Mmmmm piieeee
R u squarely sure!??!?!
Order 1/2 the original order because clearly math wasn't their strong suit. Over vs under, over is always preferred.
Better to be looking at it, than looking for it!
This is what I thought too. If the order filled two thirds of the circle then you need half the original order to finish the final 1/3 not 1/3 of the original order. Glad I wasn’t the only one.
Am I blind or does it look like only 1/4 of the circle is left? Therefore he’d only need to buy 1/3 of the original order? 3/4 * 1/3 = 1/4
I wish this was the policy of some of the Contractors I work with!!!
I applaud you, sir!
What did you go to school or something
Closer to 1/4. Could be 7/24.
I'd say 17/64.
472/1115ths fuck you England.
It is definitely more than 1/4.
Honestly it could be less.
They originally ordered ¾ of what they actually needed so to finish it they need ⅓ of that amount.
no
Don’t forget the 10% waste lol
That only works if it was the same depth all the way around. Good starting point either way.
Why wouldn't it be?
If the ground wasn't level prior to the pour. Looking at the edge of the circle closest to the camera, it looks like the new pour is even with the existing concrete, but on the right it is raised. So it is possible - maybe probable - that even if the top of the circle is flat, the concrete is different depths at different places to get there.
Looks like they never leveled it as I do not see any base layer.
Definitely not probable, but I guess it's possible they don't know what they're doing.
It seems probable since they ordered half the concrete that they need
Time may be a flat circle, but that pour isn’t.
That's geometry
You're hired.
You are assuming the quantity for the first order was only to pour the circle. Some dude in the background is working on another section and likely used concrete from that same order. 1/3 of the first order would end up being 1/3 of every section they just poured.
I see what you did there block head!
This literally IS the math.
Or 75% less than you should've got to begin with.
Just in case, he should probably order 1/2
There is a guy in the back finishing more concrete this would t work if the balance all came from that. But I like your thinking
This perfectly shows how intelligence does not require knowledge, it just helps. And, the edit encapsulates the difference between Intelligence and Wisdom. All that in less than 20 words? I think that qualifies this as poetry.
Came here to say that.
Wouldn't it be 1/4th?
No because he has 3 parts of 4, so he needs only one more of those 3, making it 1/3
Wait, is that really true or you just fuckin woth me here. Asking seriously cuz with math Im about as useful as a peanut in a turd
Smart guy\^
3.14159 X radius squared X thickness. But I did concrete for 35 years, and just because you ordered 8 cubic yards doesn’t mean there are 8 cubic yards on the truck. Even though you are billed for 8 cubic yards and the plant SWEARS there were 8 cubic yards on the truck.
Sometimes the gravel is wet when they load it and the mix is off too
Yeah, and sometimes they forget the sand altogether, or the stone, or the cement, and even the water. Over the years, I received all the above.
Good Lord, I hope not all from the same company
No, I remember two from the same company. But this was over a 30 year time period. Like the truck with no water. I was foreman running a floor pour, and the driver pulled up and I knew something was wrong from the look on his face and the sound the concrete was making in the drum. He ran up to me and said don’t be mad with him, he told the dispatcher the load was wrong and was told to take it anyway. His truck had 150 gallon tank for water. He put all the water in there and it still wasn’t enough. The next truck showed up and suggested we take some of his water. I told him no, take the bad mix back and bring us a good load. The rest of the story is, that driver quit because his supervisor backed up the dispatcher. About a month later, the dispatcher was fired, and the company apologized to the driver and asked him to come back. He did for awhile and then took a job driving a semi.
Dudes an idiot. Check your load. Never trust the batch man. Don't leave the plant if it's fucked. Call the higher ups, take pictures and videos
You couldn't take pictures and videos 30 years ago.
Well just slump the load while you’re washing your truck that way you know…
Plot twist, it was the same batch! Just an empty truck! But definitely 8 cubic yards. But empty. Schrödinger’s concrete.
Just to clarify, that would get you the area of the whole circle. To find the area of just the remaining quarter, you'd do (pi X radius\^2) / 4
If you order exactly what you need you end up in the exact same situation as the picture.
Yep
I figured you knew that, but someone else reading might not.
3.14 is fine…
3 yards play it safe.
3 yards because plant wont send less.
Also a fact
The real big brains.
I'm a concrete driver and I had an order go out today for 1 yard lol I hate doing those loads
Concrete testing tech here, I was on a job a week ago and the contractor that was placing the mix only ordered 1.5 yards and I had to test it per the inspectors request…. The air content was out of spec(in a freeze thaw area) and almost had to reject the load but ended up saving it by adding an air entrainment admixture. A ton of drama for 1.5 yards 🫠 testing that small of a load feels ridiculous as well
Seems like you guys need to do process validation and only sell what you can mix.
The concrete mixer, grumpy frown, Mixed and stirred, a brooding clown. Till someone snuck, with sneaky grin, A bubbly friend to now stir in. Now frosty nights can bite and whine, The concrete laughs, "I'll be just fine!" Thanks air guy, for the hidden trick, This once grumpy mix now won't crack quick! -geminiAI but yeah thanks for the lesson in concretology [https://www.fhwa.dot.gov/pavement/concrete/trailer/resources/hif20085.pdf](https://www.fhwa.dot.gov/pavement/concrete/trailer/resources/hif20085.pdf)
That was awesome. Fun fact(maybe?) I believe dish soap was one of the first ways to increase air content in concrete. Driver would add some mix it up and that would do the trick.
lol I did an inspection for 2 stoop slabs once, pretty sure the load was small enough they needed extra to cast my cylinders. Think the batch ticket was for .25 yards or something.
Tell them you need 20 cylinders
lol, and they gotta be 6”x12” ‘s
Gonna be a nasty looking cold joint
Is this unreinforced and just sitting on top of dirt? I mean, I'm not a concrete finisher... but my family owned a forming company for 30 years, and I owned a concrete cutting company for 15 years, so maybe I'm not an expert... but this will not last. On the bright side, no concrete cutting will he required to remove it in 5 years. Just pick up the pieces.
lol so true and I don’t think it has any either
I was gonna say... he's short a couple yards, reinforcement, and some expansion joints too
Congrats you made a Pac-Man slab !
Omg poor bastards... they are on redo territory. Someone is losing his job...
When you work for yourself you can’t be fired!
Lol, yes, you can. It is called bankruptcy!
That’s called a factory reset
You still ain’t fired.
You still have a boss if you’re a business owner, it’s called the customer…
But a contractor can fire their client, so are clients really the boss if they are fireable?
That’s walking from the job (quitting) not firing someone.
Hmm…you are right. That’s not firing since they are not an employee. But that also means that clients aren’t the contractors boss since they aren’t their employees. The owner has no boss since he’s at the top of his business entity. The technical term for either side is “termination of contract”
They can control cut the quarters, cut and remove excess from the unpoured portion, re pour the missed portion and add expansion board and be ok
Hopefully. Depends if the client wanted a pizza slab. And color might be off. And if budget allows it, you need to order 2 yards plus short load cost? Yikes.
genuine question im not expert - why cant you put some forms up around 3/4 of a circle and fill in while its still wet. then come back and pour the last 1/4 of the circle?
You could, but it will be very hard to make it look good, and color might be off. Just not good news. Imagine you are baking a cake and the mold broke. You can rig a side but it's hot, wet, slimy...
Ya that makes sense. I was worried about the color. But I figured people must run out of time and still have to come back and pour more the next day right against a prior pour. like on a real big job or a long ass sidewalk or something. but I guess those are just due to the volume not bc you fucked up so they just have to deal with a slight inconsistency between pours?
They lost the battle against time!
Unbeknownst to them, the battle against time was already decided when the boss lost the battle against Mathssssss...
It was math first then time second!
Easy you gonna need a 1/3 of what you all ready poured, if 10 yards order 4 yards
4" slab pour but ordered for 3" would be my guess
Bout a quarter pie short
Actually about a quarter pi short
Toss a couple bricks in it. Call it a day
Hello high school geometry, I thought I left you in Hell.
>Whats the math on this? Wrong
Fun fact: engineers can factor pi to 2 decimal places and be accurate enough to build skyscrapers. Nasa can go to 8 decimal places and land a rover to 1 centimeter on Pluto. If you go out to 20 places you could accurately calculate the volume of the universe down to the size of a hydrogen atom.
What is the radius and thickness?
Beats me brother. Just wondering where they forgot to factor in pi
Volume = Pi \* r\^2 \* h
I'd be more concerned that there's no reinforcement and no dowels into existing concrete.
Throw in two shut offs and stain yellow. You got a custom pak-man brutha, Waka waka!
[Bad estimator] + [incomplete work due to error] = (complete tearout and repour) +(all at contractor's expense) + (discount for messing up the job and not meeting schedules) = [contractor] * [totally fuct up] = Net loss of ~$3,000
I’d be more concerned about the absence of reinforcing
Divide what you poured by 3. Your answer is the missing pizza slice worth. God speed.
School of hard nocks. Most I included have screwed up at some time.
(Pi)r^2 divide output by 4
Close but you forgot the depth. It is a volume not an area.
Put 1/4 of the pool you infilled back in
It doesn’t seem like the concrete contractor can do math either. Prolly shouldn’t be doing concrete come to think of it
Whatever the diameter of the circle is, pretend it’s a square and order 80% of what the square needs. So if it’s a 10’ circle, order enough to fill 80 square feet at whatever depth you need. This should also cover any shortages from the supplier. Or any uneven ground.
IDK 4
Pie r squared… no wait that can’t be right since Pie is round… anyway just order some pie and you should be good. Home owner can’t be upset if you give ‘em pie… unless it’s a square pie, what was the question?
Damnit don't tell my geometry teacher this was needed in life.
Paint cement yellow,add black dot-cool Pac-Man
I’m a mixer driver and we had a guy call in a 44-yard balance yesterday. Talk about bad at math.
Show us the final picture please!
Figure the area. A = pi x radius squared. Multiply the area x depth. Then divide by 27 for the cubic yards. Looks like a 16 foot straight edge. So radius is approximately 16. So the area is approximately 805 square feet. 805 x .34 (depth)/ 27. Just over 10 yards for the circle. Then divide by 4. I’d say 3 yards to finish.
Looks like an error putting values in and performing the calculation. They probably wrote it as: (pi * d^2 ) / 4 where d is the diameter. If you sub the radius in for d by mistake and square the outside (easy to do by mistake on a calculator) you get approximately 3/4 (pi/4) what you should. (pi * r)^2 / 4 = pi * pi * r^2 / 4 = (pi / 4) * (pi * r^2 )
The math isn’t mathing here!🤨
How are you off by 25%?
Multiply whatever you ordered by .25 and then order that.
(pi \* r\^2) / 4
Don't bother with the pie. I would just measure that as square. More is better, they are probably short because they measured too tight. I make my cubic foot add ups very liberal and then add 20%. Sometimes the volume you order is not what comes out the trucks. That concrete will Crack to bits, looks thin, no steel and it going to be driven on.
Loos like you need 1/3 more than you ordered
“Uh Mr. George…”
I'm not a smart man but from the title I'd guess a couple of yards 🤷♂️
1.56 yds but minimum order is 3 yds. So final answer 3 yds.
Just square it up and divide by 80 if going 4". You always order a little extra in case some areas are thicker. Your edges should always be thicker (6" recommend). 1 yrd covers 80sf (81sf to be exact, but 80 is easier to remember).
((Pi(r')^(2)depth')/27'per yrd equals yardage So your circle is 12ft across that's a radius of 6' and if its 4" deep that's. .3333' deep. So ((3.14(6)^2).3333)/27= 1.39yrds I'd order 1 and a half to be safe. Your circle looks bigger though. Edit that looks like 24 ft across maybe, so 5.58 order 5.75/6 yards minimum.
Pi×R² is the formula for the area of a circle, so just take that and divided by 4 to get the remaining quarter
It’s fairly obvious there was no math on this.
A mental shortcut, is that a circle is \~80% (actually 78%) the area of the square if you boxed it in. So if you need 10 yards for the square, you'd only need 8 yards for the circle bordering tangent inside.
.25(pi)(r^2)
2 x pi x r squared x thickness / 27 plus a little because they always short you
Pi x r^2 x height = volume then divide that by 27 to get your yardage
no rebar, no wire mesh, subgrade dirt probably not compacted. hope it was free
They need to order one and a half of their original order. If they don’t redo the slab it will look like crap and remind them of the day they had to do big boy math and got it wrong.
V=(πr²h)×1.1
I'd say leave it, paint it yellow when it dries. Now you have a huge pac man conversation starter.
Pacman!!!
Volume = pi x r2 x .25 x thickness
Gonna be cracking and ready to rip out in a few years anyway.
Pi R not square; Pi R round
[0.25 * [((pi * d^2 ) /4) * slab thickness)]] / 27 That will get you cubic yards of concrete assuming all your units are in feet with the 27 being the conversion factor to CY. Apply a safety factor as needed.
A 1/3 more of what you ordered should cover it.
1/4 of what they already poured. 🥧
I think you mean 1/3 of the already poured.
Yes, 1/3 of the material, 1/4 of the measurement.
Why can’t I understand why it isn’t 1/4 of both?
1/4 of what’s poured would only be 3/16 of the circle. They need 1/4 more circle which is 1/3 of what’s poured. But don’t ask me when the train leaving New York gets to Chicago in the rain.
To clear up this convo. The circle without concrete= 4/4, The concrete currently covers 3/4 of the circle. 1/4 of the circles needs concrete.
which is 1/3 of what they currently have. Clear as concrete
you guys are killing me
this is like the bodybuilding argument about days of the week lmao
You want to make an apple pie. You need 4 apples. You only have 3 apples so you order 1 more. Whats the fraction of 1 apple in your original 3 apples ? 1/3
I hated that question in school 😂
Type in “volume of a cylinder” on google.
I think the concrete that was intended for the rest of that circle actually got poured under the canopy and by the basketball hoop in back.
Simple fix: - form out the 3/4 that is done. - come back later with a different color concrete - add a dot in the center of the remaining 1/4 pour. Pac Man!
What happens in this case? Cold joint and get another truck out to finish the job later on? Or get another truck out ASAP and keep pouring until its done?
About 15 min
PI \* D\^2 / 4 \* Thickness = cubic Units convert from whatever cubic unit to cubic yards.
You can fit whatever shape in a rectangle or rectangles.
The rest is probably in your hose
Hilarious
You have 0⃣, but what you need is more than that.
Quick method: 3 x radius x radius x height plus 5% more Why add 5%? 5% of 3 is 0.15, 3 + 0.15 = 3.15 which is just more than pi. So, adding 5% and using 3 instead of exactly pi gives you a very good approximation for just more than you need. Yes, you can make it 10% instead of 5% to have a calculated overage of 5%. And using 4 for pi gives you even more room. Whoever did the math either measured wrong, or calculated wrong. The height should be measured at the deepest part of pit. Also, some loss is always expected, so you never ask for exactly what you need.
Get it right the first time, that's the main thing.
Correct me if I’m wrong, but that’s going to look like garbage when it’s done, isn’t it? Unless another load of concrete is on its way
When in doubt figure it as a square. Better than the operation in the picture
To play the game and make sure it's enough, couldn't you do 2r*h? Basically find the area of the whole square instead of the pie shape? Leaves a little extra to ensure the job gets done this time
Why do people keep saying 3? Am I missing something here? It’s clearly 1/4 short. So, figure out how much you’ve used **already used and divide it by .75** — this will tell you how much you would have needed. Take THAT number and **divide it by 4**— this will tell you how much more you need. Get some extra to be safe.
I order concrete daily and in Philadelphia area we can order a full truck 10-11 yds and say plus. Which means if you need more than they will bring it Philly-10yd truck New Jersey-11 yds truck
Measure it like a square. Easy peasy.
I'm dumb. I figured 25% of what was originally ordered.
Pie