The Benefits and Drawbacks of Clay Water Pipes

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A Person Cutting a U Shaped Clay on a Wooden Surface
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Clay water pipes have been used for centuries, and for good reason - they're incredibly durable and can last for decades with proper maintenance.

They can withstand high water pressure and temperature fluctuations without compromising their integrity.

In fact, some clay pipes have been in use for over 100 years, a testament to their longevity and resilience.

However, clay pipes do have some drawbacks, including being prone to cracking and breaking if not handled carefully.

History of Clay Water Pipes

Clay water pipes have a rich history that dates back thousands of years. The first known example of clay pipes was used in Babylonia around 4000 BCE.

The city of Ephesus in Turkey was another early adopter of clay water pipes, with homes in the wealthy areas enjoying hot and cold running water through clay pipes between 2000 and 1000 BCE.

Clay pipes remained a popular choice for city plumbing and drainage systems through the early 1900s, with manufacturing plants popping up in towns where there was a need for plumbing and an adequate supply of clay.

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The use of clay water pipes continued to spread globally, with the material being used across the globe by the 1800s. In the United States, clay pipes remained in use until the mid-1950s.

By that point, clay pipes had begun to age, and cities started to move to other types of pipelines, such as polyvinyl chloride (PVC), as a replacement.

Pros and Cons

Clay water pipes have a long history, and in some ways, they still hold up well against modern materials.

They can withstand abrasion, but cracks can form, allowing for root intrusion into the waterline.

One of the main drawbacks of clay pipes is that they can become brittle, which can lead to cracks and other issues.

Areas with higher water pressure overall should not use clay pipes, as the internal pipe pressure is lower than that of metal pipes.

Manufacturing constraints limit the length of clay pipes, which can be a problem for areas that need longer pipelines.

In some areas, it's better to go with a metal pipe instead of clay, especially if you need a strong and durable option.

Disadvantages and Issues

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Clay water pipes have some significant disadvantages and issues that homeowners should be aware of.

Brittleness is a major concern with clay pipes, as they can become prone to cracks and root intrusion, even if they don't crumble under pressure.

In areas with high water pressure, clay pipes may not be the best choice, as they can't withstand the internal pipe pressure as well as metal pipes can.

Manufacturing constraints limit the length of clay pipes, making them less suitable for areas that need longer pipelines.

Older homes may have clay pipes, cast-iron pipes, or fiber conduit pipes called Orangeburg, which can deteriorate over time and require replacement.

If you have Orangeburg pipes, it's worth replacing them even if they appear to be in good shape, especially if you have the ground opened up for other repairs.

Disadvantages of Vitrified Pipes

Vitrified clay pipes have some significant drawbacks. Despite their ability to withstand abrasion, they can become brittle over time.

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Cracks can form in these pipes, allowing roots to intrude into the waterline. This can lead to costly repairs and maintenance.

In areas with high water pressure, vitrified clay pipes are not the best choice. Their internal pipe pressure is lower than that of metal pipes.

Manufacturing constraints limit the length of vitrified clay pipes. This can be a problem in areas that need longer pipelines.

Sewer Pipe Issues with Older Homes

Older homes often have hidden secrets beneath their foundations, and one of those secrets can be outdated sewer pipes. Clay and cast-iron pipes, for example, can remain in the ground as long as they're still moving waste with no leaks.

Clay pipes, specifically, have a long history dating back to around 4000 B.C. when ancient civilizations used them to build sewage systems. In fact, the Temple of Bel at Nippur, Babylonia, had clay joints that dated back to that time.

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However, if you have Orangeburg sewer pipe, it's worth replacing even if it looks good. This type of pipe is prone to deterioration and can cause problems down the line.

If you're unsure about the condition of your sewer pipe, a non-invasive video pipe inspection can be a lifesaver. A video line can be sent down the sewer line to detect breaks and cracks, and even identify the type of pipe you have.

Types of Clay Water Pipes

Clay water pipes have a rich history, and their evolution has led to significant improvements in their manufacturing process.

The raw materials used to make clay pipes have changed over time, from primarily fire clays to a blend of clay and shale, resulting in a tight, dense, non-porous pipe body.

In the past, clay pipes were extruded using steam-driven presses, which led to a product with laminations within the pipe wall. Today, hydraulic and electric presses with vacuum chambers produce a solid pipe body.

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Clay pipes were once fired at a temperature of 1,200 degrees, which is not enough to achieve vitrification. Vitrification occurs at approximately 2,000 degrees, when the mineral particles become fused into an inert, integrally bonded ceramic.

The joints used in clay pipes have also undergone significant changes, with factory-applied, leak-free, flexible, compression joints becoming commonplace after the passage of the Clean Water Act in 1972.

Installation and Maintenance

Clay water pipes require regular maintenance to ensure they last for many years.

To install clay water pipes, you'll need to choose the right location for the pipe, which should be at least 12 inches underground to prevent freezing in cold climates.

Dig a trench for the pipe, making sure it's at least 12 inches deep and 18 inches wide.

The pipe should be laid on a bed of sand or gravel to prevent settling and ensure proper drainage.

Clay water pipes are prone to cracking and breaking if they're not properly supported, so make sure to use pipe hangers to hold the pipe in place.

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It's essential to inspect your clay water pipes regularly for signs of damage, such as cracks, leaks, or corrosion.

If you notice any damage, repair or replace the pipe immediately to prevent further issues.

To clean clay water pipes, use a mixture of baking soda and water to scrub away any buildup or mineral deposits.

The Bottom Line

Municipalities consistently prioritize long-term value over short-term cost. That's why public buildings and schools are generally built with brick.

Brick is a durable material that can withstand the test of time, just like clay pipe. In fact, more and more public works professionals are discovering clay pipe as the right choice to serve the long-term interests of their communities.

Clay pipe is a reliable option for water infrastructure, and it's being adopted by many professionals in the field.

Frequently Asked Questions

Do clay pipes need to be replaced?

Clay pipes typically need to be replaced after 50-60 years of use, as their quality and efficiency may deteriorate over time. Regular maintenance and inspections can help identify when replacement is necessary.

Roger Molenaar

Senior Writer

Roger Molenaar is a writer who loves to explore the world and write about his experiences. He has been traveling for years, having visited over 50 countries around the globe. His passion for learning about different cultures and meeting new people is evident in his writing, which often features insights into local customs and traditions.

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