We are in the Process of installing a new Septic Tank and wanted people's
opinions on if I should have a 3" line to the Tank or a 4" line to the tank?

I've heard that the 3" is 1/4" per foot Drop and with the steeper sides
allows the solids to be carried away easier with less liquid. Clogs a bit
more then a 4"

I'm heard that the 4" is 1/8" per foot Drop. With the shallower sides it
would allow the liquid to run away from the solids much faster and would
hardly ever clog.

So it seems like there are plusses and minuses to both. I'm going about 80'
from the house to the tank and have the 1/4" drop that I would need for 4"

Suggestions? Comments?

Thanks!

So it seems like there are plusses and minuses to both. I'm going about
80' from the house to the tank and have the 1/4" drop that I would need
for 4"

Suggestions? Comments?
80 feet is a long run. Go with the 4" and use your 1/4" drop for best
flow.

lee h

Scott Townsend wrote:
We are in the Process of installing a new Septic Tank and wanted people's
opinions on if I should have a 3" line to the Tank or a 4" line to the tank?

I've heard that the 3" is 1/4" per foot Drop and with the steeper sides
allows the solids to be carried away easier with less liquid. Clogs a bit
more then a 4"

I'm heard that the 4" is 1/8" per foot Drop. With the shallower sides it
would allow the liquid to run away from the solids much faster and would
hardly ever clog.

So it seems like there are plusses and minuses to both. I'm going about 80'
from the house to the tank and have the 1/4" drop that I would need for 4"

Suggestions? Comments?

Thanks

Around here in northeast tennessee 4 inch is the minimum size you can
run once you leave the house......ther is probably a reason for that ~:

Thanks Guys!! 4" it is.

Now for the Secondary Question... (-;

We are adding a Granny unit to the main house and they want us to have the
main house tank drain into the Sump Tank for the New Granny unit, then pump
both up to the leach field.

I have another 60-70' run that Will be from an Existing line of unknown size
to a Sump Tank. Should that also be 4"? It only going to be the liquid from
the second chamber of the primary tank.

We have yet to find the line, so thats why I dont know the size yet. I just
wanted to make the hardware run today and get all the material.

Thanks again!

wrote in message
oups.com...

Scott Townsend wrote:
We are in the Process of installing a new Septic Tank and wanted people's
opinions on if I should have a 3" line to the Tank or a 4" line to the
tank?

I've heard that the 3" is 1/4" per foot Drop and with the steeper sides
allows the solids to be carried away easier with less liquid. Clogs a bit
more then a 4"

I'm heard that the 4" is 1/8" per foot Drop. With the shallower sides it
would allow the liquid to run away from the solids much faster and would
hardly ever clog.

So it seems like there are plusses and minuses to both. I'm going about
80'
from the house to the tank and have the 1/4" drop that I would need for
4"

Suggestions? Comments?

Thanks

Around here in northeast tennessee 4 inch is the minimum size you can
run once you leave the house......ther is probably a reason for that ~:

lee houston wrote:
So it seems like there are plusses and minuses to both. I'm going about
80' from the house to the tank and have the 1/4" drop that I would need
for 4"

Suggestions? Comments?
80 feet is a long run. Go with the 4" and use your 1/4" drop for best
flow.

lee h


And put a clean out every 20 feet.

every 20'???

Hmmm... Seems Excessive? We were thinking of one right at the exit of the
home, then its pretty much a straight shot to the tank. Would look funny
with 4 cleanouts sprinkled throughout the yard?

Thanks!

"George E. Cawthon" wrote in message
...
lee houston wrote:
So it seems like there are plusses and minuses to both. I'm going about
80' from the house to the tank and have the 1/4" drop that I would need
for 4"

Suggestions? Comments?
80 feet is a long run. Go with the 4" and use your 1/4" drop for best
flow.

lee h


And put a clean out every 20 feet.

Scott Townsend wrote:
every 20'???

Hmmm... Seems Excessive? We were thinking of one right at the exit
of the home, then its pretty much a straight shot to the tank. Would look
funny with 4 cleanouts sprinkled throughout the yard?

Set a Bar-B-Que on the first, a rock garden on the second, and a bird-bath
on the third.

You'll have a hard time going eighty feed with a fifty-foot snake.

"HeyBub" wrote in message
...
Scott Townsend wrote:
every 20'???

Hmmm... Seems Excessive? We were thinking of one right at the exit
of the home, then its pretty much a straight shot to the tank. Would
look funny with 4 cleanouts sprinkled throughout the yard?

Set a Bar-B-Que on the first, a rock garden on the second, and a bird-bath
on the third.

You'll have a hard time going eighty feed with a fifty-foot snake.

electric motor powered snakes from rental place can go 100 ft.

lee h

"HeyBub" wrote in
:

Scott Townsend wrote:
every 20'???

Hmmm... Seems Excessive? We were thinking of one right at the exit
of the home, then its pretty much a straight shot to the tank. Would
look funny with 4 cleanouts sprinkled throughout the yard?

Set a Bar-B-Que on the first, a rock garden on the second, and a
bird-bath on the third.

You'll have a hard time going eighty feed with a fifty-foot snake.




LOL. Good one.

Your slope or fall will be 20” at ¼” per foot. Try to dismiss this old debate of solids being left behind swiftly moving liquids. Concentrate on a true/consistent slope without “bellies”. Install at least 2 cleanouts with access at grade level. A 4” line will allow for future needs and improvements.

I would recommend ABS drain products such as these.

We are in the Process of installing a new Septic Tank and wanted
people's opinions on if I should have a 3" line to the Tank or a 4"
line to the tank?

I would use 4" from the house to the tank, 3" for main lines inside the
house. Remember to put a cleanout tee near the outside of the foundation
for easy maintenance in the future.

3" is supposed to work better with today's low flow toilets, as a 4" pipe
lets the smaller amount of water spread out too thin to carry the solids
away. Of course, anything that does get left behind usually gets washed
away with the next flush, laundry, shower, or sink usage...

So it seems like there are plusses and minuses to both. I'm going
about 80' from the house to the tank and have the 1/4" drop that I
would need for 4"

1/4" per foot is about the ideal slope regardless of pipe size. But, you
can get by with 1/8" per foot on larger pipe if you have longer distances
to cover.

1/4" per foot would require about a 20 inch drop over your 80 feet.

1/8" per foot would only need about a 10 inch drop for the same 80 feet.

I'd still choose the 1/4" per foot slope if you have the height to
accomodate it.

Anthony