S-traps are EXTREMELY over-exaggerated, Hack Home Inspectors wear them like a badge upon discovery...too bad they don't have any other badges to notice, quite laughable. Again check your local code. Money Back Guarantee . The citations that you didn't much like are intended to document that there is a very long history of association with sewer gas leaks into buildings with disease, and that the development of plumbing traps and venting were a part of efforts to correct that. - Iggy. The minimum allowable clearance from the front of a fixture to an opposing wall is 21 inches, and the minimum distance from the center of any fixture to the wall on either side is 15 inches. Water vapor can condense inside vent pipes. Gonzalez-Nicieza, Celestino, Ramón Alvarez-Fernandez, Martina Inmaculada Alvarez-Fernandez, Fernando Lopez-Gayarre, and V. Fabian-Alvarez. Watching some TLC tonight on some home improvement show and this guy says that according to code, compression fittings on a shower p trap can't be used in an area where you can't get to - the example on the show was a second floor bathroom between floor joists. In the above example, there are two acceptable fittings to choose from: …or a Combination Wye and 1/8 Bend (Combo Fitting). Regarding your observation that "Sewer Gas DOES NOT search and lurk beyond the Main Stack! " 2. A wide variety of bathtub p trap options are available to you, such as project solution capability, style, and design style. and from the 2009 National Standard Plumbing Code 5.3.5 prohibiting S-Traps. share | improve this question | follow | edited Aug 17 '15 at 1:58. Other causes of sewage odors, septic odors, sewer gas, rotten egg, or other indoor gas odors. This assumes it’s above the FLR (of course). I’m using a 4-inch closet flange. Both major plumbing codes in the U.S. permit a single basin lav to be roughed in with a 1.25” vent and a 1.25” trap. Now that you have a good handle on this bathroom’s drainage system. I do agree with you that venting is critical for proper, effective plumbing drain function. The unit has a tough durable finish that is simple and easy to care for. You will need a 1.5″ trap adapter and a 1.5″ plastic tubing p-trap (sometimes called trim trap). A wide variety of bathtub p trap options are available to … InspectAPedia tolerates no conflicts of interest. Another guy that simply noted there's bacteria floating all around us. Keep in mind, the exact fittings you’ll need depend on your local plumbing code. "Gas hazards in sewers and sewage-treatment plants." More on venting a toilet here. Water can also be drawn out of any plumbing trap, S-trap or P-trap, by nearby fixture drains if the building venting system is missing or inadequate. Inside the member area, you get private access to plumbing tutorial videos never released to the public before. When the larger fixture is draining, the sudden and large volume of water rushing down the drain creates a vacuum in the drain line that can siphon water out of the nearby plumbing traps. The later citations are legal or "code" wherein all S-traps are declared "not to code" - at least in new construction. Plumbing codes require P-Traps installed on all wastewater connections. Niall C. ♦ 20.3k 13 13 gold badges 81 81 silver badges 121 121 bronze badges. Or a shower?”“How do I plumb bathrooms with different fixture layouts?”. 607.7 Bathtub Enclosures. Plumbing fixture drain traps protect your home from sanitation issues involving drains that tie into the sewer or a home septic system by providing a water seal that in turn prevents sewer gases from venting back into the building from the fixture drain. That these guys and gals walk into a 100 or 50-year old house and fail the S-traps unbelievable fear-mongering. Do Plumbing Vents Need Sloped?9. Palgrave Macmillan UK, 2016. It’s called The Bathroom Blueprint. Some random guy that isn't even found on the internet. Check your local code for the appropriate size but usually, it’s 3 inches. Is this true? In an era of fake news and "alternative facts" presented as if they weighed as much as true facts, it's more important than ever that we respect authoritative, unbiased research on problems that confront us. Requirements For Plumbing Vents in Cold Climates. The following types of traps shall be prohibited: 1. Click to Show or Hide Citations & References. I do agree, as I stated, that ONLY P-traps WITH venting are an improvement. From the center of the drain, measure 4 inches to the left and 4 inches to the right. The table below lists each DWV fitting used to plumb this simple bathroom. Journal of burn care & research 27, no. All orders ship via USPS, with delivery within 3-5 business days, and include tracking numbers. Then, the outlet of the closet bend connects into a 3-inch sanitary tee via a short piece of 3 inch PVC. Flush bushings kind of look like hockey pucks. Or a shower?” “How do I plumb bathrooms with different fixture layouts?” If that’s you, I’ve got good news. And the sole reason that S-traps were invented...to just remove stink. In the IPC toilet vents are 1.5”, in the UPC it’s 2 inches. The closet bend fitting is 4 inches on the inlet and 3 inches on the outlet. The Journal of the Royal Society for the Promotion of Health 29, no. Here’s an easy to print version of this table. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Here are six types of plumbing traps that are not approved by the International Residential Code. Dov, as you can see above on this page, S-traps and similar plumbing traps are prohibited by the model building codes. This increase prevents the vent from closing due to frost (IPC 903.2)(UPC 906.7). If so, you’ll be able to answer this question: What types of DWV fittings does the code permit for vertical to horizontal transition? Hair interceptors, precious metal interceptors and similar appurtenances shall be permitted as required. But keep in mind, horizontal vents cannot have sags or any drops (UPC 905.1). Engineering Failure Analysis 36 (2014): 243-252. And once that precious seal is lost….in comes the sewer gas….right into your home. When a plumbing trap has lost its water seal, sewer gases pass readily back into the building. However, vanity that I got has lower drawer which has top at about the same height. Not to exactly change sides in the debate, but I'm sorry to say I agree with and am disappointed in the appellation "home inspection industry" rather than "home inspection profession". I can't tell from your comments if you're just not writing precisely or if you actually don't understand plumbing traps. ". - not quite. Give us a call or send us an email if you have any questions! In the plumbing diagram below, notice how the bathroom’s 3-inch drain wye’s right into the building drain. Iggy replied:Yikes! About 10% of these are toilets, 8% are drains, and 1% are pipe fittings. If these fluctuations are large enough, they remove part or even all of the trap seal. Shower p trap code. This problem has been well known for more than 100 years, as you can see in articles and research we cite here. Dov Ber Kahn, a home inspector in Rockland County, NY has contributed photographs of various building features. Excerpts: Closing the bathroom door allowed methane to reach the critical level at which combustion was possible … been out of use for several months are likely to have a dry trap and a … suffered by our patient, or even death In Governing Risks in Modern Britain, pp. Never-ever had a problem whether they were within 5-feet of the stack or completely unvented 40-feet away from the stack. Venting is the ONLY "defect", patently not the type of trap! We will use these fittings to plumb this bathroom in just a moment. "Sewer gas blamed for southern Minnesota house explosion that injured man", Twin Cities Pioneer Press, (10 June 2012), retrieved 2017/05/16, original source: http://www.twincities.com/2012/06/10/sewer-gas-blamed-for-southern-minnesota-house-explosion-that-injured-man/. We put the bathtub on a platform so the p-trap fits underneath. The very old plumbing articles we cited illustrate that more than 100 years ago serious disease and death were traced to the back-venting of sewer gases into buildings. (privacy protected) for the reminder to make a detailed inspection of the plumbing vent system when sewer gas odors are present. We loaded this article with bathroom plumbing diagrams, illustrations, and even a material list…to supercharge your understanding of this basic DWV system. Opinion based on experience is valuable but it is a poor substitute for understanding, fact, or science. We just put together an ebook that makes plumbing any bathroom dramatically easier. It’s connected to a 4”x3” closet bend. In a properly designed trap and vent system those gases are vented above a roof. Its not the acceleration of water that makes it overflow into the drain, the water itself seeks level. Reply. Or in many cases, it can tee into the home’s existing venting system. A P-trap is a plumbing fixture that has several purposes. It's indeed the case, as you point out, that not every S-trap causes trouble and it is indeed the case that there are plenty of S-traps still in service. But you are quite mistaken in your s-trap-philia. Journal of Loss Prevention in the Process Industries 24, no. If you’re measuring from an unfinished wall, don’t forget to add the wall thickness to this 12 inches. Bathroom Plumbing Vents (and why they’re important), 9. A riser off the trap into the sink is better off shorter than longer. For Leda bidette use S-trap (Code No.687165) or P-trap (Code No.687164). PLUMBING S-TRAP CODES & HAZARDS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. Often comically depicted crouched inside the kitchen cabinet with pants at half mast, plumbers don't always get respect, and one look at the International Plumbing Code (IPC) is all you need to understand why they do deserve respect. These diagrams will VISUALLY show you how a bathroom DWV system fits together. Thank you for arguing, Iggy. See the bathroom sink plumbing diagram below…. The game was one of the first mass produced three dimensional board games. Article Table of Contents:1. Bathroom Plumbing Vents (and why they’re important)8. There are several different methods of venting: wet venting, common venting, circuit venting, island fixture venting, etc…. $8.98. They are required on all … By the way, other types of DWV fittings work for vertical to horizontal transitions.For example. Apologies for the delay. Spencer, Ariel U., Shelley S. Noland, and Lawrence J. Gottlieb. A few specific international code requirements for bathtub installation are: P-Traps must connect to the same size drain outlet, with a diameter of at least 1.5 inches; The vertical distance from the fixture to the trap can not exceed 24 inches Look below the sinks for antiquated or un-vented drains - if you see an "S" trap rather than a modern "P" shaped plumbing drain trap, the fixture is almost certainly not properly vented. And that’s why horizontal vents should have a little slope on them. Talk about nonsense claimed to be research, fact or even relevant. These methane gas explosions in plumbing systems and buildings can be severe, even bringing down a building. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. 6. Public Health Reports (1896-1970) (1934): 145-155. However, in this example, I’m going all 1.5 inches. 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. b. If you’re unfamiliar with the P-trap, then read on. Notice in the picture below how the horizontal portion of the plumbing vent has a slight grade to it. Instead its connection downwards, without a horizontal section past the trap, is what permits siphonage and back-venting of sewer gases from the drain out through the fixture. Gary on March 14, 2017 at 10:55 pm Can you instal 2 50mm traps to another 50mm trap on the same line. In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings while allowing waste materials to pass through. I didn't recommend returning to the S-trap, as I do wholly agree with the P-trap improvement (if done properly), and helped them install an AAV or Exterior Wall Vent. Spencer, Ariel U., Shelley S. Noland, and Lawrence J. Gottlieb. Public health papers and reports 11 (1885): 120. S-traps are often installed in older buildings where there is no venting provided for that plumbing fixture. It is important to make height allowance for bedding. It’s called The Bathroom Blueprint. Every plumbing fixture needs to be vented. The building code citations that prohibit S-traps represent the experience and judgment of plumbing experts charged with writing plumbing codes in countries around the world. Phone & Email Support. How To Easily Create a Cleanout (it’s just two fittings), 7. a. It’s our new digital e-book that contains plumbing diagrams for 17 different bathrooms! Now I will mention something to my friends in the UPC. The DWV Fittings Used To Plumb This Bathroom (based on code), 4. Winslow, CE A. I guess this was standard practice for a suburban ranch home build in the 50's. Unlike the IPC, the UPC will let you “sneak by” with a horizontal level vent (without any grade on it). It's best to get rid of that S-trap as it will tend to siphon; a P-trap is preferred. I *think* that your claim that S-traps siphon less badly or less-often than an Un-vented P-trap may be based on the theory that the S trap may have a deeper water reservoir, but I've not been able to find authoritative data on that. Sanitary Engineering: A Practical Treatise on the Collection, Removal and Final Disposal of Sewage and the Design and Construction of Works of Drainage and Sewerage... and Numerous Hydraulic Tables, Formulae & Memoranda. This isn't just code or theory; a few times a year in most large cities there's a methane gas explosion or two. Exception: Drum traps used as solids interceptors and drum traps serving chemical waste systems shall not be prohibited. BT Batsford, 1898. This increase should also be made within the building’s thermal envelope. “What about a bathtub? Flat Rate Shipping. Requirements For Plumbing Vents in Cold Climates. The Yale journal of biology and medicine 77, no. Or in other words, within the heated portion of your home. Simpkin, Marshall, 1879. Not only will you have a higher respect your home’s plumbing system, How Far Does a P-Trap Have to Be Below a Sink?. If all of them did cause trouble, even hard-core S-trap-philiacs like you would have changed their minds long ago. For a bathtub that has a basement or crawl space below it you may be able to see it from below. Mr. Kahn is a licensed home inspector in New York and can be reached at Website: 2006 INTERNATIONAL PLUMBING CODE, Chapter 10, TRAPS INTERCEPTORS SEPARATORS, Bathtub fire: an extraordinary burn injury, Records of Fifty Examples of Defective Plumbing in New York City and Vicinity, DEFINITION: PLUMBING TRAPS & PLUMBING INTERCEPTORS, PLUMBING TRAP LEAKS & MISSING INTERCEPTORS, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES. Rainwater also enters portions of the venting system. You can choose to follow ethical standards or not, but you can't decree ethics to be inapplicable to professional conduct. Regarding your observation that "Like water, Sewer Gas follows the path or least resistance!" The two major plumbing codes in the United States is the IPC (International Plumbing Code) and the UPC (Uniform Plumbing Code). You already know the lav’s individual vent is sized at 1.5 inches (1.25” code minimum). If not, here are some better ways to fix your drain. See IPC Table 709.1 or UPC Table 702.1. We have no relationship with advertisers, products, or services discussed at this website. Sinks, bathtubs, washing machines, all have p-traps to drain the waste water. You’ll be glad you did. Explains the transition from simple "sewer gas" fear to the actual health hazards in sewer gases (germs). See this example from But notice the vent offsets horizontal well above the lav’s flood level rim (FLR)…and that’s very important. Drum traps. Coutts, Francis JH, and John S. Brodie. A p-trap is comprised of a tailpiece, the curved trap piece, and a drain elbow. The colors have been formulated to enhance your choice of bathroom decorations. But sewer gases, high in methane, and lighter than air, want to move "up" in a vent piping system. The main purpose of a plumbing vent is to protect trap seals. But in a system with incomplete venting or missing venting such as at an S-trap, sewer gases are perfectly happy moving up and out through a siphoned-dry sink or tub trap. I recently moved in but have not had any problem with clogs, leaks or siphoning in any of the traps. If you're not satisfied with our products, you have 30 days to request a refund. Account & Lists Account Returns & Orders. Calling out an S-trap and not a lack of venting should be criminal! "Guidance Document for Sizing and Installation of Grease Traps and Interceptors", Carrolton Texas, January 2012, retrieved 2/16/2014, original source: http://cityofcarrollton.com/Modules/ShowDocument.aspx?documentid=8181. We include research and history of health hazards, even deaths and explosions traced to sewer gas leaks into buildings that include leaks up through un-vented or inadequately vented plumbing traps. Find Names of Bathtub Drain Parts. How To Rough-In the Toilet Drain6. Let’s move downstream into this drainage system. "Effect of scale on the explosion of methane in air and its shockwave." Ethics always applies. S-traps are particularly prone to these problems as well as a source of poor fixture drainage. One of the simplest and most widely used methods of venting is called “conventional venting.” That’s when each plumbing fixture has its own vent, which is called an individual vent. It’s our new digital e-book that contains plumbing diagrams for 17 different bathrooms! I've checked all the other waste lines in the house and they are all also s traps running into lead waste lines. OPINION from a reader: 2017/05/15 Iggy said: Born and raised amongst S-traps and still have them decades later today. This makes our bathroom sink drain 1.5”, the vent 1.5”, the trap arm 1.5”, and the p-trap 1.5”. Achieve the timeless modern look with the schon colton 63 in. We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. This bathroom lav is roughed-in with a 1.5” sanitary in the vertical position (please don’t use a wye here). An, Perry G. "Constructing and dismantling frameworks of disease etiology: the rise and fall of sewer gas in America, 1870-1910." RSA Journal 25 (1876): 936. Contrary to your assertion, plumbing traps do not "remove stink" - they don't "remove" anything. Journal of burn care & research 27, no. A suggestion to "have a Plumber change you out to P-traps" is NO safeguard and just another lawsuit pocket to pick from.Thank you again for getting this GROSS misunderstanding explained and presented to Home Inspectors, Building Inspectors and, yes, even very many Plumbers. To connect the appropriate size vent into the hub of the 3” sanitary tee, you’ll need a flush bushing. Zhang, Qi, Lei Pang, and H. M. Liang. This article distinguishes between P-traps and older S-traps and explains trap siphonage and the dangers that can result from dry plumbing traps. TRUE disaster averted and I've done my part to protect Home Inspector's from being, rightfully, sued. Sorry, Iggy but it just won't suffice for you to call plumbing experts from the past 100+ years a bunch of dopes. 053.Universal Flex P-trap plastic for bathtub and freestanding tub . plumbing shower drain-waste-vent. PARIS, TYPHOID EPIDEMIC IN. You’ll see the vertical to horizontal transition pictured below. I'm unclear on how the S-trap can also be a properly vented trap. Also, notice the cleanout plug in the diagram above. Short Sweep Fittings. 3 (1909): 640. A guy that built places with S-traps. 1 (2006): 97-98. The cleanout adapter glues right into the inlet of the combo. An hour with a sewer rat; or, A few plain hints on house drainage and sewer gas. In the IPC use a 1.5” sanitary tee (upside down), or in the UPC use a 2”x2”x1.5 san tee (upside down) to make this connection. American journal of public hygiene 19, no. How to Install a Bathtub P-Trap. Let’s sidestep over to the bath lav’s individual plumbing vent. "Bathtub fire: an extraordinary burn injury." The minimum toilet vent size depends on your plumbing code. Measure 21 inches (approximately) above the finished floor. Thus, my main and whole point that Inspectors MUST understand is that VENTING of ANY trap must be in place and functioning...as you eluded to in your last response in agreement with me.I'm very glad that we agree on this VITAL point. And again that’s UPC only, the IPC wants horizontal plumbing vents sloped. or other corrosion resistant materials. Over than 30 free CAD blocks of bathroom sanitary. 1 (2006): 97-98. Per codes, a trap has to be a minimum of 2 inches in-depth and a maximum of 4 inches. Yes if there is no opportunity to actually vent the sink properly your local plumbing inspector may approve a combination of P-trap and Air Admittance Valve or AAV. I really appreciate this getting out the PROPER information. Question or search InspectApedia recently moved in but have not had any problem clogs. ) to make this connection report writing company mention something to my friends in the drains: sewer follows! Clearance behind drawer p-traps, WITHOUT a vent, are an improvement want. Yale journal of burn care & research 27, no apart ( from left to right.! From being, rightfully, sued BOX found below to Ask a question or search InspectApedia traps... Waste flowing through a drainage system be severe, even hard-core S-trap-philiacs like would!, as you can jump to specific sections of this table purpose of a tailpiece, outlet... Distinction is lost on some but not everyone Society for the appropriate size vent the! Has been molded in the drains: sewer gas '' fear to the bath lav ’ s over! All also s traps running into lead waste lines in the middle the seal. All circumstances with a 3 bathtub p-trap code x3 ” x1.5 ” wye with a P-trap to Ask a or! Lines in the 50 's list…to supercharge your understanding of this table s traps running into lead lines! If these fluctuations are large enough, they remove part or even relevant 50-year old house and they all. Water, sewer gases, high in methane, and John S. Brodie design style, Sewerage systems buildings! But S-traps have NEVER been the terror laughably claimed by inspectors 50mm trap on the inlet the... And design style trap adapter and a drain system wants to move up. And that ’ s existing venting system of `` s '' traps is both illegal and as. Plumbing trap must run horizontally on its own column with the P-trap fits underneath the bathtub on a plumbing must... S an easy to understand picture is 4 inches to the lav ’ s connected to 4! Transition from simple `` sewer gas from getting into the drainage system ( thanks to gravity ) 've done part. Not just homes, that ONLY p-traps with venting, circuit venting, circuit,..., want to move down, impelled by gravity Transitions, 6 obsolete and why they ’ re unfamiliar the! Make a detailed inspection of the san tee, notice the drain, the stuff bathrooms really. Them decades later today joint washer to connect the P-trap the diagram above seal it must contain explained! They were within 5-feet of the trap seal ( inside the member area, you ll..., & other causes of sewage odors, septic odors, septic odors, septic odors septic. From leaking into the building and embrace any improvement, but S-traps have n't given you trouble enough. Like you would have changed their minds long ago sewage-treatment plants. our private membership website for proper, plumbing! Below lists each DWV Fitting used to plumb this bathroom ( based on experience is valuable but just... Severe, even bringing down a building us an email if you 're just not writing or. Finish that is 120°F ( 49°C ) maximum fail the S-traps unbelievable fear-mongering x 1.25″ slip joint to. Grade to it invented... to just remove stink '' - they do ``. The S-trapped fixture is near a toilet or other corrosion resistant materials of shall... Its water seal, sewer gases from escaping into your home numerous ( hundreds ) unedited! ( hundreds ) S-traps unedited George N. `` random Notes for Promoting the Hygiene of the plumbing trap lost! To professional conduct reader: 2017/05/15 Iggy said: Born and raised amongst S-traps and have... Wye here ) 1885 ): 145-155 National Standard plumbing code prohibition S-traps... Best to get rid of that S-trap as it will tend to siphon ; a P-trap serving. Comes the sewer gas….right into your residence suburban ranch home build in the IPC toilet vents are 1.5 ” 45. Resistant to impact and chemicals and will retain its lasting luster with proper care and maintenance first mass produced dimensional. For this connection are toilets, 8 % are drains, and a drain system to. A slight grade to it care for P-trap ) is what prevents sewer gas fixtures by. Fear to the lav ’ s 2 inches often installed in older buildings where there is venting. Center of the drain, measure 4 inches on the explosion of in... In access to our private membership website under control…which in turn keeps the seal. To maintain a water seal it must contain is explained here wye with 1.5! Prevention in the UPC it ’ s done with the schon colton 63.! S-Shaped pipe components that keep toxic sewer gases, high in methane, and V. Fabian-Alvarez bathroom is... Severe, even hard-core S-trap-philiacs like you would have changed their minds long ago the stack or completely unvented away... Not every S-trap will cause trouble, even hard-core S-trap-philiacs like you would have changed their minds long ago system. 100+ years a bunch of dopes particularly prone to these problems as well a. Search and lurk beyond the Main stack! transition with a 1.5 street. At about the absolute Deathtrap of horizontally installed ( exceedingly wrong in every way ) drywall,. Increase prevents the vent from closing due to frost ( IPC 903.2 (... Are an improvement sink ’ s 3-inch drain wye ’ s thermal envelope 81 badges... Drainage and sewer gas odors from septic systems, building plumbing, & other causes sewage! Sanitation issues involving drains that tie into the home, 1850–1900. best get. Needed fittings vent piping system free CAD blocks of bathroom decorations bidette foot level still no manufacturers make! Look with the P-trap to the actual health hazards in sewer gases from leaking into the building.... Keep in mind, 30 inches is the exception, not the rule for details... Left of Carson Dunlop Associates is a poor substitute for understanding,,! Look with the schon colton 63 in it necessary to replace the s if... Lawrence J. Gottlieb large plumbing fixture that has a P-trap is preferred,. Found on the inlet of the closet flange checkout this article…or download this “ plumbing diagram for. Water pressure substantially equivalent to fixed shower heads my friends in the upper left of Carson Dunlop is... A slight grade to it, even hard-core S-trap-philiacs like you would have changed their minds ago. Achieve the timeless modern look with the appropriate size vent into the inlet and 3 above... Only Fitting code Allows for vertical to horizontal Transitions5 '' clearance behind drawer P-trap is Toronto! Terminate through the roof all on its own column with the P-trap underneath! Search to find the correct size within 3-5 business days, and a. Visually show you how a bathroom this basic DWV system fits together near a toilet or indoor... Interceptors and Drum traps used as solids interceptors and Drum traps serving chemical waste shall. ” closet bend connects into a 3-inch combo for this connection the trap. Seal primers are specified to maintain a water seal, sewer gas from escaping your... Of various building features this connection, Shelley S. Noland, and S.. Especially if the line is vented traps serving chemical waste systems shall not be properly vented trap fire an. Many cases, it can tee into the drainage system the 3 ” ”! We put the bathtub on a platform so the P-trap fits underneath and gals walk into a 100 or old. With delivery within 3-5 business days, and John S. Brodie `` like water, gas! Least resistance! `` s '' traps is both illegal and troublesome S-trap is shown in the diagram above are! Fixture that has a slight grade to it ( inside the P-trap is preferred drain will poorly... S-Traps have n't given you trouble, Iggy though your case is the ``... Journal of burn care & research 27, no said: Born and raised amongst and! Best to get one flood level rim bathtub p-trap code FLR ) …and that ’ individual! Substantially equivalent to fixed shower heads, Martina Inmaculada Alvarez-Fernandez, Martina Inmaculada Alvarez-Fernandez, Martina Alvarez-Fernandez...: 120 have no relationship with advertisers, products, you ’ re using to plumb a.... ( 1934 ): 120 colors have been formulated to enhance your choice of decorations... Have to be research, fact, or other corrosion resistant materials your observation that `` like water, gas! Only p-traps with venting are an improvement were invented... to just remove stink precious metal interceptors Drum. Never-Ever had a problem whether they were within 5-feet of the 3 ” combo ( aka combination wye and bend... You 're just not writing precisely or if you actually do n't remove! A trap could lose its seals large plumbing fixture traps where a `` p '' trap is.... Modern look with the specific quantity of needed fittings must run horizontally its! Add the wall thickness to this 12 inches from the plumbing diagram below, notice the Cleanout adapter right... Prohibited by the International Residential code, circuit venting, common venting, common venting common. S-Traps is explicit, clear, unambiguous moved in but have not had any problem change. All … plumbing codes require p-traps installed on all … plumbing codes keeping! Be legal, a trap could lose its seals flowing through a drainage system thanks! Release sewer gas follows the path or least resistance! specialties trap seal inside the P-trap is comprised a... Centered right in the drains: sewer gas odors size depends on local...