Would you call this an S trap?

[John Gromkoski]

What say you?

[Bob Elliott]

YES if less than two times diameter of the pipe (3 inches here)
Go from end of first to start of bend in other .
Looks to need about an inch of horizontal to me from the picture.

[Christopher Currins]

YES .

[John Gromkoski]

Originally Posted by belliott

YES if less than two times diameter of the pipe (3 inches here)
Go from end of first to start of bend in other .
Looks to need about an inch of horizontal to me from the picture.

I did not realize there was a formula for that. Thanks. And you are accurate, the horizontal section is only about an inch.

[Joseph A. Ferry]

No. I would call this a Strap.

[Jeffrey R. Pope]

It's an attempt at a "vertical leg waste drain." The minimum dimension of the horizontal piece after the trap is 8 inches.

When installed properly, they were allowed through the 2003 code cycles. They have since been removed from the model codes, although some localities may still allow them.

[Bob Elliott]

Not much of an attempt Jeff


P3105.3 Vertical leg for waste fixture drains. A vertical leg
(see Figure P3105.3) is permitted within a fixture drain of a
waste fixture in accordance with the following criteria:
1. Minimum trap diameter shall be in accordance with Table
P3201.7.
2. The diameter of Section A shall be equal to the diameter
of the trap.
3. The length of Section A shall not be less than 8 inches
(203 mm) and in accordance with Table P3105.1.
4. The diameter of Section B shall be one pipe size larger
than the diameter of Section A.
5. The length of Section B shall not be more than 36 inches
(914 mm).
6. The diameter of Section C shall be one pipe size larger
than the diameter of Section B.
7. The total length of Section A and Section C shall not exceed
the distance allowed in Table P3105.1.
8. Bends shall be the diameter of the largest connected section.
P3105.4 Crown vent. A vent shall not be installed within two
pipe diameters of the trap weir.
SECTION P3106

[Jeffrey R. Pope]

Originally Posted by belliott

Not much of an attempt Jeff

I didn't say it was successful

[RAY THOROMAN]

Would you report is as an defect? Given the location it appears to be a sink in a bathroom, I would not as I see no major issues or adverse effects it would cause.


New construction yes. Older homes no.

[John Gromkoski]

Originally Posted by rthoroman

Would you report is as an defect? Given the location it appears to be a sink in a bathroom, I would not as I see no major issues or adverse effects it would cause.


New construction yes. Older homes no.

This installation was in a newly gut renovated apartment. I'm going to call it out. The project manager of the renovation work is an architect. How about them apples.

[Jeffrey R. Pope]

New or old, it's an improper trap configuration. Yes, I would call it out.

[Bob Elliott]

Originally Posted by rthoroman

Would you report is as an defect? Given the location it appears to be a sink in a bathroom, I would not as I see no major issues or adverse effects it would cause.


New construction yes. Older homes no.

Why do you think the laws of physics prevent the trap from emptying and allowing sewer gas to enter in a older home?

[RAY THOROMAN]

Originally Posted by belliott

Why do you think the laws of physics prevent the trap from emptying and allowing sewer gas to enter in a older home?

Bob,


Not what I said. I understand what you're saying but do you personally report a s trap a defect? General summary defect? I'm not going into great detail or debate here but for me its a case by case basis.

Newer home, remodeled yes. Older home just a general comment about potential issues.


This pic in this thread does not appear to be a true s trap anyways. Is it vented? It looks like it's vented. It goes through the wall, not floor. Being remodeled,, would say defect. Calling it a s trap no.

[John Gromkoski]

Originally Posted by rthoroman

Bob,


Not what I said. I understand what you're saying but do you personally report a s trap a defect? General summary defect? I'm not going into great detail or debate here but for me its a case by case basis.

Newer home, remodeled yes. Older home just a general comment about potential issues.


This pic in this thread does not appear to be a true s trap anyways. Is it vented? It looks like it's vented. It goes through the wall, not floor. Being remodeled,, would say defect. Calling it a s trap no.

Ray, if it's not a "true S trap", and you're not calling it out for that, what would you call out as the defect then in a remodeled home?

[Bob Elliott]

Originally Posted by rthoroman

Bob,


Not what I said. I understand what you're saying but do you personally report a s trap a defect? General summary defect? I'm not going into great detail or debate here but for me its a case by case basis.

Newer home, remodeled yes. Older home just a general comment about potential issues.


This pic in this thread does not appear to be a true s trap anyways. Is it vented? It looks like it's vented. It goes through the wall, not floor. Being remodeled,, would say defect. Calling it a s trap no.

Ray last summer my village guy for turning on water at a vacant showed up at a home I was inspecting and immediately called out the S trap similar to what is in this picture.
I sure would have felt foolish leaving it out.
House was 75 years old.