Can cast iron pipe be used underground?

Just like anything made of cast-iron, this type of sewer pipe is heavy-duty, but it can rust over a very long period of time. In NYC extra heavy cast iron is code compliant. It is also the underground drainage pipe of choice. Almost all house sewer lines in NYC are made from extra heavy cast iron pipe.

How long do cast iron pipes last underground?

between 80-100 years
Cast Iron: Cast iron pipes last between 80-100 years, and are built to withstand a high amount of water pressure. However, like galvanized steel, cast iron piping has been found to be susceptible to rust over time.

Is cast iron good for water pipes?

Cast iron pipes, while durable, do fail over time. They can develop rust, which slows water drainage. Tree roots and cast iron do not make good partners. If you find galvanized or cast iron pipes in your home, don’t panic and don’t start tearing out the plumbing.

What type of pipe is best for underground drainage?

Polyvinyl Chloride pipes (PVC) are the best choice for underground drainage due to their durable nature. PVC pipes are malleable and come in almost any size. These pipes can withstand lots of environmental and water pressure and last for very long periods.

Do cast iron pipes need to be replaced?

Wear and tear is normal in residential pipe systems. One frequently asked question is “How long do cast iron drain pipes last?” Cast iron waste pipes last anywhere between 50 and 100 years. However, it may be time to replace cast iron pipes long before their lifetime is up.

What is a disadvantage of cast iron pipe?

Despite the advantages of strength and durability, though, a big disadvantage of cast iron is that it is susceptible to rust over time. In homes that have cast iron piping, if a pipe rusts all the way through, that section can be replaced with plastic piping, like PVC.

What is the problem with cast iron pipes?

Cast iron pipes can corrode over time compromising their structural integrity. It is estimated that about 76 million homes in America have cast iron pipes that must be replaced. These 76 million homes risk severe plumbing problems.

Is cast iron pipe better than PVC?

Cast iron pipes are extremely resistant to heat and won’t melt. Flexibility. Although cast iron is strong, it can be brittle and break when blunt force trauma is applied. PVC is a much more flexible material and can withstand these forces without breaking.

Should I replace cast iron with PVC?

Durable – Polyvinyl Chloride can last up to 70 years or more. Replacing cast iron pipe is expensive as they deteriorate from oxidization. Cleaner – Because PVC doesn’t corrode or rust, you won’t get any metal in your sewage or drinking pipes. It’s a non-toxic material, safe to use for all kinds of plumbing purposes.