S-Trap? Part2

[William T. Misegades]

As there are still arguments over whether this is an S-Trap or not, which you can read all about here: http://www.nachi.org/forum/f22/s-trap-66378/

I now have to ask: How long does the pipe in between the 2 red lines have to be in order for this to be or not be an S-Trap? That is the question...

[KEVIN WOOD]

2 1/2 times the diameter is what I was taught but don't forget I am not in your AHJ and I am not a plumber.

[An HI]

Originally Posted by wmisegades

As there are still arguments over whether this is an S-Trap or not, which you can read all about here: http://www.nachi.org/forum/f22/s-trap-66378/

I now have to ask: How long does the pipe in between the 2 red lines have to be in order for this to be or not be an S-Trap? That is the question...

Attachment 50386

Developed length of the trap arm must be 2x the size (diameter) of the trap arm.

The fall between those same points must not be greater than the size of the trap arm.

[Bruce A. King]

A true s-trap does not have a vent. The one pictured may have a vent at the left vertical pipe.

[William T. Misegades]

Originally Posted by bking

A true s-trap does not have a vent. The one pictured may have a vent at the left vertical pipe.

The one pictured does have a vent to the left.
Attachment 50400


So, is this an illegal S-Trap?
I think I will take this to 3 master plumbers, have them really analyze the photos. Between the vent, the Tee with curved center, the developed length of the trap arm etc... the one thing we all agree on is that this is Handy Manny who did this job.

[Nick Hernandez]

Don't know thw Texas codes, in Florida it is a trap comming off a waste arm, since the other is a vent.

SECTION 1002 TRAP REQUIREMENTS

1002.1 Fixture traps. Each plumbing fixture shall be separately trapped by a water-seal trap, except as otherwise permitted by this code. The vertical distance from the fixture outlet to the trap weir shall not exceed 24 inches (610 mm) and the horizontal distance shall not exceed 30 inches (610 mm) measured from the centerline of the fixture outlet to the centerline of the inlet of the trap. The height of a clothes washer standpipe above a trap shall conform to Section 802.4. A fixture shall not be double trapped.

Exceptions:


1. This section shall not apply to fixtures with integral traps.2. A combination plumbing fixture is permitted to be installed on one trap, provided that one compartment is not more than 6 inches (152 mm) deeper than the other compartment and the waste outlets are not more than 30 inches (762 mm) apart.3. A grease trap intended to serve as a fixture trap in accordance with the manufacturer's installation instructions shall be permitted to serve as the trap for a single fixture or a combination sink of not more than three compartments where the vertical distance from the fixture outlet to the inlet of the interceptor does not exceed 30 inches (762 mm) and the developed length of the waste pipe from the most upstream fixture outlet to the inlet of the interceptor does not exceed 60 inches (1524 mm).1002.2 Design of traps. Fixture traps shall be self-scouring. Fixture traps shall not have interior partitions, except where such traps are integral with the fixture or where such traps are constructed of an approved material that is resistant to corrosion and degradation. Slip joints shall be made with an approved elastomeric gasket and shall be installed only on the trap inlet, trap outlet and within the trap seal.

1002.3 Prohibited traps. The following types of traps are prohibited:


1. Traps that depend on moving parts to maintain the seal.2. Bell traps.3. Crown-vented traps.4. Traps not integral with a fixture and that depend on interior partitions for the seal, except those traps constructed of an approved material that is resistant to corrosion and degradation.5. "S" traps.6. Drum traps.

Exception: Drum traps used as solids interceptors and drum traps serving chemical waste systems shall not be prohibited.1002.4 Trap seals. Each fixture trap shall have a liquid seal of not less than 2 inches (51 mm) and not more than 4 inches (102 mm), or deeper for special designs relating to accessible fixtures. Where a trap seal is subject to loss by evaporation, a trap seal primer valve shall be installed. A trap seal primer valve shall conform to ASSE 1018 or ASSE 1044.

1002.5 Size of fixture traps. Fixture trap size shall be sufficient to drain the fixture rapidly and not less than the size indicated in Table 709.1. A trap shall not be larger than the drainage pipe into which the trap discharges.

1002.6 Building traps. Building (house) traps shall be prohibited, except where local conditions necessitate such traps. Building traps shall be provided with a cleanout and a relief vent or fresh air intake on the inlet side of the trap. The size of the relief vent or fresh air intake shall not be less than one-half the diameter of the drain to which the relief vent or air intake connects. Such relief vent or fresh air intake shall be carried above grade and shall be terminated in a screened outlet located outside the building.

1002.7 Trap setting and protection. Traps shall be set level with respect to the trap seal and, where necessary, shall be protected from freezing.

1002.8 Recess for trap connection. A recess provided for connection of the underground trap, such as one serving a bathtub in slab-type construction, shall have sides and a bottom of corrosion-resistant, insect- and verminproof construction.

1002.9 Acid-resisting traps. Where a vitrified clay or other brittleware, acid-resisting trap is installed underground, such trap shall be embedded in concrete extending 6 inches (152 mm) beyond the bottom and sides of the trap.

1002.10 Plumbing in mental health centers. In mental health centers, pipes and traps shall not be exposed.

[Charley L. Bottger]

I still stand on the principle of your PIC is not a S-trap it does not have the ability to siphon the trap yes it is a sloppy home grown trap but it still does not allow sewer gas into the living area
Here are my pic of true S-traps

[James F. McKee]

Charley You need to do some cleaning under Your sink...

[William T. Misegades]

Originally Posted by jmckee

Charley You need to do some cleaning under Your sink...

[Charley L. Bottger]

Originally Posted by jmckee

Charley You need to do some cleaning under Your sink...

Are ya having trouble reading the address on the image they sell reading glasses at wally world