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location Canada
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Aug
30
answered What benefit do plasterboard/drywall screws have?
Aug
22
revised Safe way to close gaps around copper pipes?
fixed typo
Aug
19
comment Do I need a vent for extending a drain to a new bathroom addition?
You're welcome @mogrify. If it was me I would pipe it as shown in the right drawing as a fixture downstream of a water closet just doesn't feel right.
Aug
19
comment Do I need a vent for extending a drain to a new bathroom addition?
@BMitch you're correct on the dry vent definition, however the portion of pipe between the trap and the vent connection is not considered a wet vent, it is called the fixture drain. The length of a fixture drain is limited (as are the number of changes of direction). This limitation is based on the diameter of the pipe, as the fall on the fixture drain cannot exceed that of the diameter of the pipe. This distance is measured from the trap to the vent connection. The vent connection can be either a dry vent or a wet vent. Look at the drawings in my answer for what a wet vent is.
Aug
18
revised Do I need a vent for extending a drain to a new bathroom addition?
added 41 characters in body
Aug
18
comment Do I need a vent for extending a drain to a new bathroom addition?
The distances you reference are for the maximum lengths of fixture drains/trap arms, which are measured from the trap to the vent connection, either dry or wet. There is no constraint on the distance of a wet vent itself. However, the existing vent could not act as a wet vent for the new bathroom as it is located downstream of the new bathroom and serves a bathroom on a different level.
Aug
18
comment Do I need a vent for extending a drain to a new bathroom addition?
Just to clarify, each fixture does not need their own individual vent. The Virginia code allows wet venting which would eliminate the need for the individual vents as you have shown. Wet venting is quicker to install and requires less materials. You can refer to my answer for more detail.
Aug
18
answered Do I need a vent for extending a drain to a new bathroom addition?
Aug
15
comment Can p-trap be installed higher than drain entry?
S Traps are prohibited in BC (Canadian National Code as well), so make sure they are approved where you live. I believe that the issue/concern with them is that they promote self-siphonic action causing the seal to break.
Aug
14
comment How can I attach a pipe to a flat surface?
These fittings are commonly called Bulkhead Flanges and can be found in all sizes and materials.
Aug
13
comment How can I replace a water pipe on the second floor without the need to damage the bathtub?
Things to look for in the drain is: (1) The connection of the drain to the tub. This connection is often made with plumber's putty which can dry out and create leaks. (2) The connection of the tub overflow. I have seen it where it was not connected correctly and when the overflow devise in the tub was rotated 180 allowing water to leak when using the shower.
Aug
7
answered How do I install this wall mount bathroom sink?
Aug
7
revised Safe way to close gaps around copper pipes?
fixed grammar
Aug
7
answered Safe way to close gaps around copper pipes?
Aug
2
revised Which parts of a Moentrol transfer valve need to be exposed?
Fixed Typo
Aug
2
revised Which parts of a Moentrol transfer valve need to be exposed?
Additional information
Aug
2
answered Which parts of a Moentrol transfer valve need to be exposed?
Jul
30
comment Why is sewage backing up from this outdoor pipe?
I don't think that this pipe is a vent or an old downspout connection. The pipe is most likely a cleanout installed on the building sewer as it leaves the building, which depending on your local code will most likely be a requirement. Usually you would have a proper cleanout fitting installed but here there have used a non-glued cap. Have the line scoped and cleaned/repaired but do not disable the use of this pipe to act as the cleanout.
Jul
26
answered Can I bury a 1 1/2" shower/tub drain pipe in an earthen floor?
Jul
25
answered Can teflon tape be used on a threaded joint behind a wall?