Mathematicians? - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

Lounge For casual talk about things unrelated to General Motors. In other words, off-topic stuff. And anything else that does not fit Section Description.

Mathematicians?

Old 05-06-2014, 05:00 PM
  #1  
Senior Administrator



Certified Car Nut
Thread Starter
 
Join Date: Jul 2003
Location: Dark Side, NY
Posts: 16,343
Thanked 1,273 Times in 949 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default Mathematicians?

Here'* a math problem for people that like math. Say you have a pipe that is 12 points 9 inches inside diameter... 3000 feet of it is filled with liquid and needs to be drained through two 3/4 quarter inch lines. what is the total volume of liquid that will be drained and how long will it take using only gravity.
__________________
Weather Underground PWS KNYHORSE11
Mike is offline  
Old 05-06-2014, 05:10 PM
  #2  
Senior Member
True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,808
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

20,367 gallons
7.462 hours
2kg4u is offline  
Old 05-06-2014, 05:17 PM
  #3  
Senior Member
True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,808
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

(12.9/2/12)**2 x 3.14159 x 3000 = 2722.9 cubic feet
x 7.48 gallons per cubic foot = 20,367 gallons

The time is just a number I made up. It can't be calculated since you don't know the slope of the pipe. If it is sitting perfectly flat it will never completely drain. If you stand it straight up it will drain in 2 minutes.
2kg4u is offline  
Old 05-06-2014, 05:18 PM
  #4  
Senior Member
True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,808
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

And by the way, you need an engineer, not a mathematician.
2kg4u is offline  
Old 05-06-2014, 05:23 PM
  #5  
Senior Administrator



Certified Car Nut
Thread Starter
 
Join Date: Jul 2003
Location: Dark Side, NY
Posts: 16,343
Thanked 1,273 Times in 949 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Your saying a 3000ft pipe standing straight up filled with water will drain in 2 minutes out of (2ea) 3/4" holes?
__________________
Weather Underground PWS KNYHORSE11
Mike is offline  
Old 05-06-2014, 05:50 PM
  #6  
Senior Member
True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,808
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

Originally Posted by Mike1995 View Post
Your saying a 3000ft pipe standing straight up filled with water will drain in 2 minutes out of (2ea) 3/4" holes?

I'm saying you need to know the slope of the pipe to know how long it will take to drain.
2kg4u is offline  
Old 05-06-2014, 06:14 PM
  #7  
Senior Administrator



Certified Car Nut
Thread Starter
 
Join Date: Jul 2003
Location: Dark Side, NY
Posts: 16,343
Thanked 1,273 Times in 949 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

I wasn't exactly given that info, but lets say for practical purposes, the pipe is vertical and the 2 holes are equal distant at the bottom.
__________________
Weather Underground PWS KNYHORSE11
Mike is offline  

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.