Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #21  
Old 09-26-2012, 09:11 PM
muddywater muddywater is offline
LawnSite Bronze Member
 
Join Date: Sep 2011
Posts: 1,813
Quote:
Originally Posted by 1idejim View Post
Nope, i am not an internet contractor.

Rule of thumb is 2psi per 5 ft
Posted via Mobile Device
I doubt the op had a 100 ft high mountain in the backyard he was working with. Realistically, probably a 30' rise at most whereas .06 of lb pressure isn't going to amount to didley squat. NOW if he was building a water tank in his client's back yard he just might need your expertise!

Rule of thumb is still off by .03 psi.

Cool job we are working on. I need to get a pic of all 91 heads in this sections running at once.
Attached Images
 

Last edited by muddywater; 09-26-2012 at 09:20 PM.
Reply With Quote
  #22  
Old 09-26-2012, 10:12 PM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,361
Right is right, wrong is wrong. Generally rule of thumb is where we find a sweet spot for daily use.

That doesn't excuse sleeping in class.
Posted via Mobile Device
Reply With Quote
  #23  
Old 09-26-2012, 10:17 PM
muddywater muddywater is offline
LawnSite Bronze Member
 
Join Date: Sep 2011
Posts: 1,813
Quote:
Originally Posted by 1idejim View Post
Right is right, wrong is wrong. Generally rule of thumb is where we find a sweet spot for daily use.

That doesn't excuse sleeping in class.
Posted via Mobile Device
Well if right is right and wrong is wrong then your rule of thumb is wrong. If i ever install irrigation with a poc at the bottom of a mountain, i will just google it like you did.
Reply With Quote
  #24  
Old 09-26-2012, 10:32 PM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,361
Quote:
Originally Posted by muddywater View Post
Well if right is right and wrong is wrong then your rule of thumb is wrong. If i ever install irrigation with a poc at the bottom of a mountain, i will just google it like you did.
Don't you ever call me a liar punk
Posted via Mobile Device
Reply With Quote
  #25  
Old 09-26-2012, 10:44 PM
muddywater muddywater is offline
LawnSite Bronze Member
 
Join Date: Sep 2011
Posts: 1,813
Time to pour you a liquor drink mr jim. You must have one hell of a better memory than all the rest of us. Either that or you install alot of pipe up mountains.
Reply With Quote
  #26  
Old 10-02-2012, 10:43 PM
muddywater muddywater is offline
LawnSite Bronze Member
 
Join Date: Sep 2011
Posts: 1,813
Quote:
Originally Posted by 1idejim View Post
If you are being conservative use 0.433 per ft. instead of .5

6.70 psi per hundred ft. difference
Posted via Mobile Device
Actually .5 is more conservative than .433 when going up an incline. I am banking on a 50 lb pressure loss with .5 and you are banking on a 43 lb pressure loss per 100'. 6.7 psi of gravy.
Reply With Quote
  #27  
Old 10-03-2012, 08:57 PM
txirrigation txirrigation is offline
LawnSite Senior Member
 
Join Date: Aug 2010
Location: Texas
Posts: 917
Quote:
Originally Posted by muddywater View Post
Well if right is right and wrong is wrong then your rule of thumb is wrong. If i ever install irrigation with a poc at the bottom of a mountain, i will just google it like you did.
Rule of thumb is a Jim Crow law pertaining to the size of stick you could beat your wife with; as it could be no thicker than your thumb. Therefore by saying "rule of thumb" he means a rough measurement that is quick....

.... holy crap, that was the first time I actually used my expensive degree.


In the real world of installing there are a lot of "rule of thumb" measurements made. If you would like to walk onto a commercial job site and stop everything to get scientific more power to you, but you'll go broke quick. Making quick judgement calls based on experience and knowledge you can recall quickly is what separates the Men from the Boys. Having a solid "rule of thumb" list invaluable.
Reply With Quote
  #28  
Old 10-03-2012, 11:00 PM
muddywater muddywater is offline
LawnSite Bronze Member
 
Join Date: Sep 2011
Posts: 1,813
Quote:
Originally Posted by txirrigation View Post
Rule of thumb is a Jim Crow law pertaining to the size of stick you could beat your wife with; as it could be no thicker than your thumb. Therefore by saying "rule of thumb" he means a rough measurement that is quick....

.... holy crap, that was the first time I actually used my expensive degree.


In the real world of installing there are a lot of "rule of thumb" measurements made. If you would like to walk onto a commercial job site and stop everything to get scientific more power to you, but you'll go broke quick. Making quick judgement calls based on experience and knowledge you can recall quickly is what separates the Men from the Boys. Having a solid "rule of thumb" list invaluable.
Well I agree. I doubt I will be able to get .433 out of my head for awhile now(many thanks jim), but I was always able to remember 1/2 lb per foot. And that is a more conservative number when going uphill.
Reply With Quote
  #29  
Old 10-04-2012, 12:27 AM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,361
You're welcome
Posted via Mobile Device
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump






Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 08:49 AM.

Page generated in 0.08683 seconds with 10 queries