Receiving Helpdesk

when did they stop using cast iron pipes

by Dr. Brent Thompson IV Published 3 years ago Updated 2 years ago

Cast iron pipes finally went out of fashion in the 1980s. They were replaced by Polyvinyl Chloride plastic (PVC), which can be made quicker and more easily. PVC has the required strength to be durable for long-term use, and is cheaper and easier to make, making them the preferred option overcast iron.May 12, 2021

Full Answer

When did they start using cast iron pipes?

Cast iron pipes have been manufactured and used in the United States since the early 1800’s. The first usage was for water distribution but eventually also expanded to waste water disposal (soil pipes also called sewage pipes). By the 1890’s an actual cast iron soil pipe industry took shape and was recognized.

Is cast iron waste piping still used today?

Cast iron waste piping is still used in many commercial, industrial and municipal applications, and even in some residential structures. This is an example of older cast iron pipe in good shape.

Is it time to replace your cast iron pipes?

However, it may be time to replace cast iron pipes long before their lifetime is up. Deterioration of cast iron pipes is normal after just 25 years, so homeowners should conduct routine inspections. An estimated 76 million American homes have failed cast iron pipes that must be replaced.

Why do most plumbers not install cast iron pipes?

For plumbers that do not install much, if any, cast iron they just do not have the experience needed to properly perform the installation. When these inexperienced plumbers do attempt to handle/install the cast iron they add to the problems of cast iron pipes.

When did Plumbers stop using cast iron pipes?

In 1980, cast iron pipes were no longer the pipe of choice. Builders and plumbers replaced cast iron with rigid PVC (Polyvinyl Chloride plastic), which is easier to make, can be made quickly, is harder than other options, and has greater tensile strength. It is essentially a cheaper, faster alternative to cast iron.

What year houses have cast iron pipes?

If you live in a house built before 1975, you may discover cast iron pipes. Homes built before 1960, may still have galvanized steel pipes. Both materials have a lifespan of around 30-40 years. Plumbers started installing copper piping in homes during the 1930s.

When were cast iron drain pipes used?

The first cast iron pipes were installed at Versailles in 1664. In the United States, the first cast iron pipes were installed in Philadelphia in the 1810s to replace deteriorated spruce log pipes.

How do I know if my house has cast iron pipes?

Cast iron pipes are easily recognizable as they have a black finish along with a bulge at each section of the pipe known as the hubs. However, there is the potential for rust that forms along the surface to wear away at the cast iron's black finish, making it rust-hued.

Should you buy a home with cast iron pipes?

Overall, it is perfectly fine to buy a house with cast iron pipes. Regardless of what plumbing a house has, be it cast iron, copper, or PVC the plumbing is susceptible to suddenly needing to be replaced. It's highly recommended to have the plumbing inspected prior to buying a house.

What type of plumbing was used in 1975?

Polybutylene Pipes Builders installed polybutylene (or poly) piping in an estimated 10 million U.S. structures between 1975 to 1996. Unfortunately, this piping material had a significant flaw that ultimately resulted in hundreds of millions of dollars in water damage.

Should I replace cast iron sewer pipe 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.

Is cast iron pipe still available?

You'll typically find iron pipes in older homes built during or before the 1970s (early 1980s in some places). Back then, builders favored cast iron pipes for the material's durability, ability to handle water through them, and resist damage. Still, they are generally no longer installed in residential settings today.

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 type of plumbing was used in 1980?

What type water supply and drain (DWV) pipes were commonly used for 1980s residential plumbing? The big news of the 1980s was two new plastic water supply pipes, CPVC and PB, but copper continued to be the preferred water pipe.

What type of plumbing was used in 1990?

What type water supply and drain (DWV) pipes were commonly used for 1990s residential plumbing? Copper was still used, but in decline. Acidic water or soil found to cause pitting in some areas. CPVC (cream-color plastic) became much more popular.

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.

How long do terracotta pipes last?

Clay pipes typically last between 50-60 years, while PVC pipes are expected to last 100 years before requiring replacement.Jun 18, 2020

What type of plumbing was used in 1970?

Plastic plumbing pipes in the form of ABS and PVC became widely used in residential construction in the 1970s. Plastic plumbing pipes are affordabl...

What type of plumbing was used in 1950?

In the 1950s, ductile iron pipe was introduced as an improvement on cast iron. It has higher strength and similar corrosion resistance, making it a...

When were polybutylene pipes used?

Polybutylene (PB) was a plastic manufactured between 1978 and mid-1995 for use as piping in home plumbing systems. It was inexpensive and offered p...

What type of plumbing was used in 1940?

Galvanized steel was the most popular water pipe during the 1940s. Copper was also used for water pipe. Lead was still used by water utilites for s...

What were old sewer lines made of?

In older properties built before the 1950s, you might find clay pipe, cast-iron pipe, or a fiber conduit pipe called Orangeburg. Clay and cast-iron...

What year did they start using PVC for sewer lines?

1935 – The first PVC pipes were manufactured (Germany). 1936 – PVC pipes began to be installed for residential drinking water distribution and wast...

When were cast iron pipes first used?

The oldest cast iron water pipes date from the 17th century and were installed to distribute water throughout the gardens of the Chateau de Versailles. These amount to some 35 km of pipe, typically 1 m lengths with flanged joints. The extreme age of these pipes make them of considerable historical value.

What is cast iron pipe?

Cast iron pipe is pipe made predominantly from gray cast iron It was historically used as a pressure pipe for transmission of water, gas and sewage, and as a water drainage pipe during the 17th, 18th, 19th and 20th centuries. Cast iron pipe was frequently used uncoated, although later coatings and linings reduced corrosion and improved hydraulics.

What is a flanged pipe joint?

Flanged joints consisted of flat machined surfaces that were tightly bolted together with a gasket between them to prevent leakage. This type of pipe joint is still in use today, typically for above-ground pipelines in water treatment and manufacturing plants. Typical leaded bell-and-spigot joint used for cast iron pipe.

What is graphite in cast iron?

In cast iron pipe, the graphite forms flakes during the casting process, when examined under a microscope. Cast iron pipe was superseded by ductile iron pipe, which is a direct development, with most existing manufacturing plants transitioning to the new material during the 1970s and 1980s. Ductile iron pipe is different than cast iron, because ...

How does corrosion affect cast iron pipes?

Corrosion of cast-iron-pipe can occur on both the internal and external surfaces. In electro-chemical corrosion, internal anodes develop where bare iron is exposed to aggressive waters, promoting iron to move into solution. The iron combines with various components in the water, forming a tubercle on the pipe interior. This process of tuberculation can eventually cause significant restrictions in cross-sectional area within the pipe. Since the tubercles are irregularly shaped, buildup of bacterial growths on the surface are likely. As more iron moves into solution, the result is a loss of pipe structure over time potentially affecting pipe integrity. In storm and sanitary sewer systems, the creation of acidic gases (such as hydrogen sulfide) by microbial action can further corrode internal pipe walls but is most pronounced on the inside ‘ceiling’ of the pipe.

How was cast iron pipe made?

The first cast iron pipe was produced in horizontal moulds, the core of the mould would be supported on small iron rods which would become part of the pipe. Horizontal casting resulted in an uneven distribution of metal around the pipe circumference. Typically slag would collect at the crown of the pipe creating a much weaker section.

What material was used to make water pipes?

Cast iron proved to be a beneficial material for the manufacture of water pipes and was used as a replacement for the original elm pipelines utilized earlier. These water pipelines were composed of individually cast pipe sections, often termed sticks, jointed together by a variety of joint mechanisms. Flanged joints consisted of flat machined ...

When were cast iron pipes invented?

Cast iron pipes have been manufactured and used in the United States since the early 1800’s. The first usage was for water distribution but eventually also expanded to waste water disposal (soil pipes also called sewage pipes). By the 1890’s an actual cast iron soil pipe industry took shape and was recognized.

How long does cast iron pipe last?

A good quality cast iron pipe, installed under ideal conditions, has a life expectancy of 75 – 100 years, and possibly even more. Cast iron does rust but when it does the rust actually forms a barrier layer over the remainder of the pipe which helps protect it from further rusting.

When was cast iron water piping used?

Cast iron waste water piping was still being installed during the early PVC years and can be found in early 1970’ s homes. Cast iron waste piping is still used in many commercial, industrial and municipal applications, and even in some residential structures.

Is cast iron pipe labor intensive?

Cast iron pipes have always been more labor intensive to install and maintain. They also require older methods that although they are taught in trade schools these methods are specific to cast iron. For plumbers that do not install much, if any, cast iron they just do not have the experience needed to properly perform the installation. ...

Can a plumber see inside a cast iron pipe?

However even a plumber can only view the interior of the pipe and can not see the exterior conditions without excavating them. Cast iron pipes are not a problem piping system, and can be an exceptional system to have in your home.

Can cast iron pipes survive?

When you start adding together the defects and other damaging factors of cast iron pipe you can see that even a high quality cast iron can potentially not survive its expected lifespan. In your inspection report you will no doubt read disclaimers regarding the condition of cast iron pipes.

Is cast iron a good waste disposal?

Since most cast iron pipes were thick walled to begin with even with some rusting inside they can handle the lower pressures of waste water disposal quite well and last a long time. Cast iron also provides many other benefits in home waste systems that still makes it a good choice for homes.

How long does a cast iron pipe 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. Deterioration of cast iron pipes is normal after just 25 years, so homeowners should conduct routine inspections.

Why do underground pipes fail?

One reason is external corrosion caused by materials found in soil. Soil often contains high levels of acidity, stray electric currents, and toxins, all of which can cause cast iron pipes to rust. External rust is not necessarily a cause for concern, though it may indicate more serious problems in the internal piping.

What happens if your plumbing is rusted?

Sporadic leaks are a cause for concern; they may lead to a more serious flood of water or raw sewage backup in the future, causing foul smells and attracting pests into your home.

What causes sulfuric acid in pipes?

Waste running through pipes can cause hydrogen sulfide gas buildup, which oxidizes and produces sulfuric acid. Sulfuric acid is a recipe for disaster; it is corrosive to cast iron. Experts suggest checking the ingredients on household drain cleaners, as many brands contain sulfuric acid, which accelerates pipe corrosion.

What are pipes made of?

If you live in a home built before 1975, your pipes are probably made of cast iron, and you should check them for damage. Your pipes may be hidden underground or in the basement, but an ounce of prevention will be worth a pound of cure.

What do you need to know if your house was built before 1975?

What You Need to Know If Your House Was Built Before 1975. If you live in a home built before 1975, your pipes are probably made of cast iron, and you should check them for damage. Your pipes may be hidden underground or in the basement, but an ounce of prevention will be worth a pound of cure.

Where is pipe corrosion most prevalent?

Pipe corrosion is ubiquitous in American cities irrespective of climate, but salt and moisture-rich environments—such as Florida—can accelerate the problem. The problem is that household plumbing is often hidden behind walls or in neglected crawl spaces or utility rooms, so problems can go unnoticed for years.

image

Overview

History

The oldest cast iron water pipes date from the 17th century and were installed to distribute water throughout the gardens of the Chateau de Versailles. These amount to some 35 km of pipe, typically 1 m lengths with flanged joints. The extreme age of these pipes make them of considerable historical value. Despite extensive refurbishment in 2008 by Saint-Gobain PAM, 80% remain original.

Manufacture

The first cast iron pipe was produced in horizontal moulds, the core of the mould would be supported on small iron rods which would become part of the pipe. Horizontal casting resulted in an uneven distribution of metal around the pipe circumference. Typically slag would collect at the crown of the pipe creating a much weaker section.
In 1845, the first pipe was cast vertically in a pit and by the end of the century, all pipe was manu…

Internal corrosion

Corrosion of cast-iron-pipe can occur on both the internal and external surfaces. In electro-chemical corrosion, internal anodes develop where bare iron is exposed to aggressive waters, promoting iron to move into solution. The iron combines with various components in the water, forming a tubercle on the pipe interior. This process of tuberculation can eventually cause significant restrictions in cross-sectional area within the pipe. Since the tubercles are irregularly …

Standardization

The first standardization of cast iron water pipes in Britain occurred in 1917 with the publishing of BS 78. This standard specified a dimensionless nominal size, which approximately corresponded with the internal diameter in inches of the pipe, and four pressure classes, Class A, Class B, Class C and Class D, each with a specified wall thickness and outer diameter. It is noted that the outer diameter is identical between classes with the exception of sizes 12 to 27, where Classes A and …

External links

• Notes on Pipe - gizmology
• Cast Iron Soil Pipe Institute - organized in 1949
• waterpipes supplier - waterpipage

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      • 17. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 18. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:45
      • 19. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:261
      • 20. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:205
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      Metadata
      Bindings
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      Backtrace
      • 19. /vendor/outl1ne/nova-menu-builder/src/Models/Menu.php:35
      • 20. /vendor/outl1ne/nova-menu-builder/src/helpers.php:33
      • 22. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 23. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:45
      • 24. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:261
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      Metadata
      Backtrace
      • 24. /vendor/outl1ne/nova-menu-builder/src/Models/Menu.php:35
      • 25. /vendor/outl1ne/nova-menu-builder/src/helpers.php:33
      • 27. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
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      Metadata
      Bindings
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      Backtrace
      • 14. /app/View/Composers/SidebarView.php:22
      • 15. /app/View/Composers/SidebarView.php:12
      • 16. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124
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      Metadata
      Bindings
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      Backtrace
      • 21. view::2dd102cf0462e89a4d4d8bc77355d767652bf9aa:15
      • 23. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:108
      • 24. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 25. /vendor/livewire/livewire/src/ComponentConcerns/RendersLivewireComponents.php:69
      • 26. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:61
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    Outl1ne\MenuBuilder\Models\MenuItem
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    Outl1ne\MenuBuilder\Models\Menu
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