Welcome to OnlineConversion.com Forums 

Convert and Calculate Post any conversion related questions and discussions here. If you're having trouble converting something, this is where you should post. * Guest Posting is allowed. 

Thread Tools  Display Modes 
#1




linear feet to cubic yards
I need to convert 221 linear feet of concrete into cubic yards, but I have a 18' X 8" in dia. pipe inside the concrete the thickness of the concrete is 2' 9" in thickness.........Please help!!!!!!!!

#2




Re: linear feet to cubic yards
you have to calculate the volume of the concrete, then subtract the volume of the pipe that is inside the volume of concrete
to calculate the volume, you multiply the width, by the depth, by the height and to get the volume of the pipe you do ((((diameter/2)^2)*pi[3.1415926535897932384626433832795])*length. if the pipe is only partially submerged in the concrete, then the calculation would be different, more complex
__________________
duct tape duct tape it's better than glue fixes stuff just like new be prepared throughout your life keep a roll beneath your pillow at night 
#3




Re: linear feet to cubic yards
Can you provide a bit more information? If I understand you correctly, you would do something like this:
linear feet * width in feet * thickness in feet = cubic feet Now you will need to subtract the volume of the pipe. 18 feet * (Pi * (4/12) * (4/12)) = 6.28 cubic feet cubic feet of cement  6.28 cubic feet = total cubic feet 
#4




Re: linear feet to cubic yards
I guess I just type too much slower than gubment_cheez.

#5




Re: linear feet to cubic yards
Quote:
I had a dream that we hold these truths to be self evident that all men are created equal, and unique. Ask not what your forum can do for you. Ask what you can do for your forum.
__________________
duct tape duct tape it's better than glue fixes stuff just like new be prepared throughout your life keep a roll beneath your pillow at night 
#6




Re: linear feet to cubic yards
Quote:
I still don't understand.......what is Pi and why (4/12) what does this mean? 
#7




Re: linear feet to cubic yards
Quote:
4 is inches, and 4/12 is a quick way to convert it to feet. Since all units need to be the same, for example cant multiply feet by inches, only feet by feet. 4 inches / 12 = 4/12 = 0.333 feet 18 feet * (3.14 * 0.333 feet * 0.333 feet) = 6.28 cubic feet But that is only the volume of the pipe. You subtract that volume from the volume of the cement, and you cant calculate that until you know the width. 
Thread Tools  
Display Modes  

