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In Tulsa Oklahoma you can, but i would still use 4 in.

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Q: Can you use a 3 inch pipe as sewer line?
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What size of pipe for 300 ft of sewer line?

I would use 3 inch for that.


If 3 inch sewer pipe in connected to the street can 4 inch pipe be used under a remodel and reduce down to 3 inch?

First there should be no reason the a home needs a 4 inch waste line. Three inch is more then enough. But if you insist use a "consentric' reducer as opposed to the " "ecentric". Other wise your waste will have to jump up from the four inch , and you will have back up.


What size PVC pipe do you use for the main drain line out of your house to the street?

Most of the time it is 4 inch.


I have a clay sewer pipe running from the main line in the basement floor. It is all cracked and doesn't appear to be in use. What could have been the purpose of this pipe and can it be removed?

This may be an old sewer system probably going to a septic drain field. Before you discard this be sure you have a working potty draining system.


Is it safe to cut a cast iron sewer pipe with a saw with the possibility of sewer gases present?

Only a suggestion, but if in doubt use a snap-cutter. In a well ventillated area, methane volatility is a low risk hazard with regards to old sanitary sewer pipe. if you think there might be gases present,you need to wear a proper breathing mask === === I think he meant gases inside the pipe, not in the room the pipe is in.


How do you install a regular toilet flange on a cast iron 6 inch sewer pipe?

If you can get to the 6 inch cast iron, you could use a rubber coupler between the cast and the flange. If it is in the concrete, put a piece of 4 inch PVC inside the 6 inch and lead it in like you would a regular cast joint. Leave the 4 inch above the floor and slide the flange over it, screw it down and cut the 4 inch flush with the flange. They make just the flange that will slide over the pipe.


Can you use pvc pipe for gas line?

Absolutely Not!


How do you measure a 3-inch pipe?

Use a tape measure!


Can you use 2 inch pipe for a toilet line or are you asking for trouble I have an existing line I want to hook a toilet into that is 2inch?

I think the standard is a 4-5" pipe for toilet exhausts. To use a 2" pipe is asking for trouble. Friends of mine have the toilets that grind the waste in a box behind the cistern before it is flushed away. They both have had no end of trouble with the systems which grinds and flushes goes away through a standard size 22mm copper pipe to the sewer line. It is one thing to 'economise' and put up with the inconvenience of the smell and stuff like that - undoing the grind box to get to clogged blades - and there is the costs of "doing the job properly". I really advise you to do the job properly. Less hassle in the end.


Can you use a two inch pipe for a toilet drain?

Wouldn't recommend it as things may back up in the drain line. 4" line is the norm ... you want to get rid of waste, not keep it around longer.


Can half Inch PVC Pipe be used for an Air line at a Garage?

No because its not rated for AIR lines and plus if you were to use it and something damaged the pipe it would explode. Most people use copper or iron pipe for air lines.On commercal and other air line installations black pipe is the normal material to be used , depending on a the working pressure then one would choose the schedule of the piping and fitting rating


What slope to use on sewer drain lines?

One eighth inch drop per foot of run.