What’s up guys and welcome back to the channel here are 10 things that’ll, make you fail a plumbing inspection, whether you did the work yourself or, if you hired a contractor to do it. So here we go, the first violation would be to plumb your washing machine drain in inch and a half piping.
The new plumbing code specifies that a washing machine, p-trap and pipes must be a minimum of two inches, as opposed to the old code, which was an inch and a half. Also, the stand pipe must be 18 to 30 inches in height and at least six to 18 inches off of the floor for it to be code.
If not done this way, you’d, fail automatically. The second reason why you’d fail: an inspection would be that there are no drill plates or protection plates. These protection plates are specifically designed to protect all pipes drink by wall.
Installation failing to install these would increase the risk of a drywall er accidentally drilling into a drainpipe washing machine repairs or portable water line without knowing and caused water damage in the future, which would lead to mold and rot, so always install them before calling your inspector.
The third violation would be to use a sanitary T or T Y on a horizontal drain line. Sanitary tees are only meant to be used in a vertical orientation for drains and both vertically or horizontally for vents.
As we could see here, a sanitary tee was used horizontally on the main drain to plumb a toilet roughen. Yes, it would still work, but for an inspector this is an automatic fail and would need to be modified using a Y and 45 like this, for it to be cold.
The reason being is that there’s, a lot less resistance in this setup than with a sanitary tee which would prevent eventual blockages in the future violation. Number four is not installing a clean-out on a main stack for an installation to be up to code, a y or way approved clean out, as required on any main stack that comes out of a slab.
If you just use a straight coupling as seen here, your inspector will automatically make you fail an inspection and get you to modify it. So it’s done right. Something else to keep in mind is to keep it as accessible as possible.
So it’s, easy for a plumber to sneak the pipes when the time comes. The fifth violation is roughing in a toilet, drink too close to a wall. A toilet roughen must have at least 15 inches of clearance on each side from the center of the flange to the finished wall.
Anything under this is a code violation and will need to be modified. Also, 95 % of toilets must have their flanges installed, 12 inches away from the finished wall to the center of the flange check your toilets instructions for these measurements.
The sixth violation is setting up a dual lavatory roughen like this. The reason why this configuration is not code is because of the way the left lavatory is plumbed. Let me show you why, when a sink drains water flows through the pipe, if the pipe fills up with water, it’ll, create a negative pressure behind it and suck out the water out of the p-trap, allowing for sewer gases to escape into the House, by using a TT Y like this air from the vent, is allowed into the pipe to balance out the pressure.
A variant of this violation is sloping, your pipe more than a quarter inch per foot. Your pipe should never drop more than its inner diameter. So a 2-inch pipe should drop no more than two inches or it’ll siphon out the p-trap number seven is plumbing a vent below the flood level of a fixture.
All vents must be tight in six inches above any fixture or 42 inches off the ground for it to be code here’s. Why? Let’s say you have a kitchen sink with a vent tied in six inches below the flood level.
In the event of a blockage, the sewage would rise and fill the vent instead of leaking out of the sink, giving you no visual hint that your pipes is blocked. This could eventually cause your vents to block, and if that happens, there’s, no way of unblocking them, which would result in permanent damage and all sorts of other problems, so always install your vents six inches above the heist fixture or a minimum of 42 inches off the ground to be code.
If you’re, adding a fixture in the basement, for example, you might be lucky and have what we call a future vent. That was plumb during the construction of the home, which is code to connect to one thing you don’t want to do and that’s against the code is to connect your new fixture to an existing vent.
If that’s, all you had, this would be an automatic fail. Number eight is installing a tea with a capped pipe like this to absorb any banging in the pipes before plumbers used this method to stop pipes from banging in the walls.
By installing a 18 inch piece clock repair of pipe on both the hot and cold lines, which would upon filling trap some air inside and act as a cushion to dampen any shocks caused by quick, closing faucets such as toilets, washing machines and ice makers, these air chambers would Eventually, fill up with water and be rendered useless, which is why this technique is no longer approved and has been replaced by these dedicated shock absorbers, which do the same job number.
Nine is using a shirt sweep Nonnie on a drain. A lot of people will make this mistake when doing their own plumbing and that’s using a short sweet 90. Instead of a long sweet, 90 or 240 fives short sweet 90s like these are made for venting, not draining.
They’re too restrictive for drains. The wage is wider. Our code, you either have to use two 45s or a long sweet 90 for it to be approved by your inspector. The only place, a short sweet 90 is permitted is for a toilet.
If a long sweep 90 was used, the pipe would go below the joist and wouldn’t. Allow you to install any drywall. If that was the case and the tenth violation is notching or drilling too big of a hole and a joist to pass a pipe garsh, strict guidelines to follow in notching and drilling holes in a structure, and they must be respected in order to keep the building Structural integrity, if you’re only drilling small holes to pass some PEX piping, for example, there are no problems, but for bigger holes such as a three-inch pipe for a toilet, it’s.
A whole other story. Here’s, a schematic websites that shows what’s allowed and what’s? Not a lot of people will choose to run the pipes below the joist, but would mean that a box would need to be made to have a finished wall and that’s.
It ten points that’ll, make you fail an inspection, if not done properly. Please feel free to comment below if you have any questions and give this video a thumbs up. If you learned something from it, thanks for watching and I’ll see you guys in the next one