Suggestions for Drain and sewage lines installation

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  #1  
Old 12-04-12, 02:12 AM
S
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Smile Suggestions for Drain and sewage lines installation

Dear Sir,
It is a big job and not possible to do it yourself. I will hire a plumber to do this job. But I like your recommendations for installation of drainage system and rain water drain for my home to have and idea and to get the job in right way.
It will be a two story home. 4 Bath rooms and 1 kitchen on each floor and one Bath at roof top. So total 9 bathrooms and 2 kitchens and 2 washing machines. Covered area is 60 feet x 45 feet. Municipal sewage line is passing about 6 feet deep on the road side.


  1. Do I need to install two Separate drain lines. One for gray water (Kitchen, shower, basin) and the other for toilet sewage line or only one will do the job satisfactorly.

  1. Size of the Drain lines.

  1. Some people say slope ¼ inch per foot and some people recommend 1/8 inch per foot. Please suggest the best slope gradient.
  2. Root of the drainage will be as below.
From Kitchen to back side 45 feet long, The turn to left and run up to
to the corner 35 feet. There are 3 toilets in this run. Now again turn to
left and run is 85 feet and it will join to main sewage line. There is one
Bathroom on this 85 feet run.

5. What about the Rain water drain? It will be separate line?

6. What should be the distance of drain lines from the underground water
tank. And from main Water Supply line.
Kindly ask me if any more information is needed.



With best regards,
Shafeeq
 
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  #2  
Old 12-04-12, 05:41 AM
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Hi!

Because you are Non US you will need to follow local codes and practices with in your country. What we may say here may be wrong where you are.
 
  #3  
Old 12-04-12, 06:25 PM
Z
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I will add that correctly sizing and laying out a drain and vent system is typically quite complicated. There are a lot of variables, and unfortunately it's hard to know what you don't know until it's installed and doesn't work as well as it should.

I would recommend getting a plumber to at least help out and design the system. Unfortunately, most everyone here is US-based, so we probably won't be able to help too much. Sorry.
 
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