Residential Plumbing Overview for Inspectors Course

Pictured is the plumbing for the kitchen sink. There is no high loop for the dishwasher drain. Although the dishwasher appears to be new and probably has a high loop installed from the factory, it is still recommended by most manufacturers to install a second high loop before the drain connects to the homes plumbing system.
Remediation recommended, work should be performed by a qualified contractor.

The picture is of a Weil McLain boiler is used for hot water. Instead of a hot water heater. The boiler use a water coil in the boiler to heat hot water on demand. Instead of keeping water heated all the time in a tank.

While I realized PVC was a very common building material, I had no idea it was the third most produced plastic in the world. With plastics, comes some environmental dangers, and PVC is no slouch. Due to its chemical make up, it is possible for PVC to release Chlorine Dioxide, a highly toxic gas that causes skin irritation and respiratory problems. Most people are more familiar with it’s other name, mustard gas. PVC’s resistance to corrosion make it great for use in electrical insulation, plumbing, and a slew of other uses, but it also makes it much harder to know when PVC is failing. It doesn’t burn like wood, instead it smolders, and releases its toxic gasses. Because it’s so strong and non-combustible, a smoldering piece of PVC can go unnoticed in a home for a long enough time to potentially cause serious harm to the occupants.

Modern day processes are capable of converting PVC into other usable plastics, which will impact how much of it is recycled, and how much of it will remain in land fills to slowly decompose and off gas. These are important aspects to consider when utilizing building materials, because the safety of occupants is of the utmost importance. Containing risks of gas exposure, carcinogens, etc. is truly important to ensure people have the opportunity to live happy, healthy lives.

Dryer vent safety vent should be ran as straight as possible max length of 25 feet. You must subtract 5 foot for ever 90 elbow. Must exit the house because of the heat, moisture and lint expels while drying clothes.

The Bradford White gas 40 gallon hot water heater in the attic. Hot water heater exhaust duct was disconnected with missing screws and exhausting carbon monoxide into attic. This is a possible safety hazard and should have a professional plumber correct.

Dryer Venting shall not exceed 25 feet (7,620 mm) from the dryer location to the wall or roof termination. The maximum length of the duct shall be reduced 2.5 feet (762 mm) for each 45-degree (0.8 rad) bend, and 5 feet (1,524 mm) for each 90-degree (1.6 rad) bend. The maximum length of the exhaust duct does not include the transition duct.
This means that vents should also be as straight as possible and cannot be longer than 25 feet. Any 90-degree turns in the vent reduce this 25-foot number by 5 feet, since these turns restrict airflow.

In the picture that I’ve provided shows a p trap, a trap weir, tailpiece coming from a kitchen sink. The pipe is made of PVC and I turn the faucet at the sink on to test for leaks as required in inspection. No stains under pipe found. shut offs are available.

I chose the picture titled “Contaminated Water” which shows a water hose over a bucket. The correct application shows the water hose which consist of an air gap above the bucket. The incorrect picture shows the water hose within the bucket; hence no air gap and backflow occurs which could lead to contamination.

This photo shows the tailpiece, slip joint connector, and p-trap on a bathroom vanity drain. It also shows the hot and cold water supply shutoff valves. There is no indication of leakage by either the waste system or supply system.

I chose the article on sewer gases in the home. I learned that the most common cause of sewer gas in the home is dried out plumbing fixtures such as p-traps. If the traps are devoid of water, there is nothing to prevent the sewer gas from venting through he drain the trap is supposed to protect. Another common cause is cracked waste pipes which allow the sewer gas to escape.

This is part of an inspection I did on my neighbor’s house. The gasket or flange between the top of the garbage disposal and her sink was leaking profusely. What was even better was an electrical receptacle not two feet away and it wasn’t even protected via GFCI… not in photo.

Water temperature seems to be an issue in most homes I’m inspecting. As an adult I know what hot is and where I would like to keep it but I’ve measured some upwards of 130 degrees or more with children in the home. I bring it up every time and lock it under safety hazards and recommend that they take it down about 15 degrees or more. 130 degrees is just too hot and dangerous.

The image is that of a kitchen sink. The obvious defect of the tailpiece being broken when entering the “T” was noted on the report. Also noted was the correct entrance of the pipe coming from the left in the image, which enters the drain pipe above the P-trap.

The image selected from the image gallery is that of the sediment trap and gas piping on a gas-fired water heater tank. The sediment trap should be downstream of the required gas shutoff valve and as close to the appliance as possible. Noted in the image was the lack of the required shutoff vale upstream of the trap. This would be noted as a deficiency and safety hazard.

This is a toilet, if I would be doing an inspection I will flush it and check for its functionality, check any damage to the toilet bowl or tank, check for any leaks in the water system or drainage system

Anti-scald valves article https://www.nachi.org/anti-scald-valve.htm This valves are designed as a safety feature in a shower installation and avoid injuries by keeping the temperature of the water at a safe level not to cause burns to the occupants of a house

This is a kitchen sink with garbage disposal. It is a dual sink. It has the drainage from the dishwasher coming in to the system at the highest point. There is a correct P trap installed. There is a shut off for the water and a dual shut off on the hot water with one line for the sink and the other for the dishwasher

Anti- scolding valves are designed to prevent the occurrence of being scolded when the water pressure on cold water dips rapidly from another use like a toilet or a washing machine. A child can be scolded very quickly compared to an adult.

I am doing my essay on a p trap,this p trap is located in the bathroom a p trap prevents clogging from happening deaper in the plumbing system and it also prevents sewer gases from entering back into the home

i am doing my essay on ways that you can make your house more energy efficient ones of the ways is to make sure your windows and your doors are insulated well around the frames if they arent pull the trim off around them and get spray foam and foam around the perimeter.