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Most Common Mistakes
- Violating or ignoring code
restrictions,
- Not installing D/W/V with at least a
1/4" slope per one foot pipe,
- Not properly venting or trapping all
fixtures,
- Attaching too many fixtures to a drain
or vent pipe,
- Using pipes that are too small,
- Not providing enough cleanouts or not
providing cleanouts at the prescribed places,
- Venting the fixture too far from the
fixture's trap,
- Not properly aligning tubing into
fittings or stop valves. (Forcing the nut onto the
compression ring at an angle when the tubing is at an angle
will cause a leak.)
- Using a fitting in a wrong position,
- Installing rough plumbing in the wrong
location,
- Reducing pipe size as the pipes run
downstream,
- Cutting pipe too long and not allowing
for the ridge in the fittings, and
- Forcing the trap and waste arm fittings
out of alignment and putting too much stress on the nuts and
washers in the tubing.
- Make certain the compression tubing is
put in the fittings so that it is evenly tightened.
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Installing Drain
Waste Vent Pipe
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 Running
the pipe can be tricky. All different kinds of fittings are
available to turn in different and receive different sizes of
pipe at various angles. One fitting may need 3 opening ports,
all accommodating a size pipe. You will have to plan your runs
and buy the necessary fittings (always get a few extra). Keep in
mind that codes may regulate how fittings can be used* (i.e.
sanitary tees may not be used in a vertical to horizontal
connections long sweep connection must be used here). You will
need to know the diameter of your pipes, their angles, the code
and their direction to determine each fitting.
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| While planning may take some
time and study, the cutting and assembly of plastic pipe is very
simple. |
| 1. Using a back saw or a fine
toothed saw, cut the pipe the required length, remembering that
the pipe fits into the fitting a prescribed distance for each
diameter of pipe. |
| 2. Use a small knife or rough
sandpaper to remove the "burr" off the freshly cut
pipe. |
| 3. With a rag and some
cleaning solvent, clean the ends of the pipe and the
inside of fitting where the pipe will join. (ABS does
not need this solvent or primer. It can be wiped clean
with a damp rag.) |
 4.
The glue will dry almost immediately
and you can never get it unglued. To change the
connection you must cut out the fitting and start over.
Because of this, you want to be sure you have it right
the first time. This is very easy in some cases, but
often you will have a number of pipes coming into a
fitting from several different angles. All of these must
meet correctly once they are permanently glued. To
assure this, "dry fit" the fittings and pipe
by cutting and assembling everything without glue to
assure it all fits at the correct angles and dimensions.
5. Make marks across fittings and
pipe so that once the pipes are removed and the glue is
spread, you will know exactly how to realign everything
when the pipes are inserted permanently into the
fitting. (Be sure the marks or lines are long enough on
the pipe so that they will not be covered by the glue
you will spread on the pipe.)
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| 6. Spread a generous
amount of the required pipe glue around the end of the
pipe and on the inside of the fitting with a dobber. |
| 7. Insert the pipe
into the fitting until it "bottoms out" and
give it a little twist to be sure that the glue is
spread evenly. |
| One of the most
difficult parts about running drain waste vent pipes is
drilling the large (2-3") holes necessary to run
the pipe. You will need to purchase, borrow or rent
special heavy duty plumbers' bits that are notched to
fit 1 1/2", 2" and 2 1/2" pipe. The
cheaper hole saw is just too difficult when you are
doing a large project. You will also need a heavy duty
1/2" or 3/4" drill (preferably a right angle
drill or one with a right angle attachment). Be careful,
as drilling with these large bits often causes the bit
to bind and the drill to spin. |
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The
Foaming Root Control
Did you
recently have to snake your
area drains and sewer?
Did roots come out?
Using Root-X once a year will
prevent root build up.
GUARANTEED or your
next treatment is FREE
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