Maya Ellison
Plastic pipes are widely used for drainage systems, with PVC and ABS pipes being the most common types. When choosing a plastic drainage pipe, factors such as pipe size, wall thickness, inner structure, and intended use must be considered. The lightest plastic drain pipe is likely to be a corrugated plastic pipe, which offers flexibility, ease of installation, and reduced weight compared to solid-walled plastic pipes. Corrugated pipes are also more cost-effective due to their lower transportation costs and require less manpower for installation.
| Characteristics | Values |
|---|---|
| Types | PVC, corrugated plastic, polypropylene, ABS plastic |
| Use cases | Sewer and drainage applications outside the building, stormwater management, septic drain field, culvert pipe, leach field, irrigation, underground sprinkler systems, swimming pools, water supply lines, stormwater sewer, high-efficiency boilers |
| Properties | Rigid, lightweight, flexible, high tensile and impact strength, high resistance to wear and abrasion, chemical resistance, non-conductors of electricity, immune to electrochemical reactions caused by acids, bases, and salts |
| Installation | Requires primer and solvent cement, can be installed at flatter slopes, requires cutting |
| Sizes | 1.5, 2, 3, and 4 inches |
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What You'll Learn
PVC pipes are lightweight and durable
Polyvinyl chloride (PVC) pipes are a common choice for drainage pipes. They are lightweight, durable, and cost-effective.
PVC pipes are lightweight and easy to work with, making them a popular choice for plumbing applications. They are significantly lighter than traditional cast iron pipes, which were commonly used in drainage systems in the early 20th century. The lightweight nature of PVC pipes makes them easy to transport, handle, and install. For example, installers can simply glue the pipes together instead of soldering them, as is the case with metal pipes.
PVC pipes are also known for their durability. They are highly resistant to corrosion and rust, which can be an issue with metal pipes. PVC pipes can last for decades, with a service life of up to 100 years, and are even more durable than steel or copper pipes. They have high tensile and impact strength, making them suitable for withstanding high water pressure in main supply lines.
In terms of cost, PVC pipes are relatively inexpensive compared to metal piping materials, such as copper. They are also recyclable, which helps to reduce costs and preserve natural resources.
There are different types of PVC pipes available, such as Schedule 40 and Schedule 80, which vary in wall thickness. Schedule 40 PVC pipes, for example, have become a popular choice for house plumbing due to their lightweight nature and ease of installation.
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Corrugated pipes are flexible and crack-resistant
When it comes to choosing the right drainage pipes, there are several options available, each with its own set of advantages and disadvantages. One of the most popular choices is corrugated pipes, which are known for their flexibility and crack resistance.
Corrugated pipes have a unique structure that sets them apart from other types of pipes. They are designed with a series of ridges and grooves, giving them a wavy or corrugated surface. This design enhances their flexibility, allowing them to bend and manoeuvre through tight spaces with ease. The flexibility of corrugated pipes is one of their most significant advantages, making them highly versatile and adaptable to various installation scenarios.
One of the key benefits of corrugated pipes is their exceptional crack resistance. Unlike rigid pipes, corrugated pipes can easily withstand natural settlements and ground movements without suffering from cracks or leakages. Their flexibility enables them to absorb impacts and settle into the surrounding soil without compromising their structural integrity. This makes them ideal for areas prone to soil movement or shifting ground conditions.
The flexibility of corrugated pipes also contributes to their durability. While rigid pipes may crack or break under pressure, corrugated pipes can bend and flex, distributing the stress more evenly. This reduces the likelihood of cracks or fractures, resulting in a longer-lasting pipe system. Additionally, the corrugated design provides a larger surface area, allowing the pipes to expand and contract with temperature changes, further reducing the risk of cracking.
Corrugated pipes are widely used in drainage applications, including gutter drainage systems and larger projects such as culverts and storm drains. They are known for their lightweight construction, making them easy to transport, manipulate, and store. However, it is important to note that corrugated pipes have thinner walls, making them more susceptible to crushing or blockage issues when installed underground. Regular maintenance is necessary to prevent debris build-up and ensure the long-term performance of corrugated pipe systems.
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Polypropylene pipes can withstand high temperatures
Polypropylene (PP) is a thermoplastic polymer that is semi-crystalline and has a relatively low density compared to other well-known thermoplastics. It is one of the most important materials used in piping installations today due to its mechanical characteristics, chemical resistance, and high heat deflection temperature.
Polypropylene pipes are known for their ability to withstand high temperatures. The typical temperature range for polypropylene pipes is between 0°C and +80°C, but some types can operate at even more extreme temperatures. For example, β-PP-H can be used from -10°C up to 95°C. This makes polypropylene pipes suitable for a wide range of applications, including industrial and sanitary uses.
The different types of polypropylene pipes, such as PP-H, PP-R, and PP-B, offer varying levels of crystallinity, hardness, tensile strength, stiffness, and creep strength. PP-H has the highest crystallinity, making it the hardest and stiffest option with the greatest tensile strength. PP-R, on the other hand, has excellent long-term creep strength at higher temperatures, such as 80°C under continuous stress. This makes it a good choice for applications where the pipes will be subjected to high temperatures for extended periods.
Polypropylene's high heat deflection temperature is a significant advantage in piping installations. This property allows polypropylene pipes to maintain their shape and integrity even when exposed to high temperatures. Additionally, polypropylene exhibits high resistance to chemical attack due to its non-polar nature, making it suitable for use with various chemicals and disinfectants.
When using polypropylene pipes, it is important to consider UV protection. Unlike some other pipe materials, polypropylene does not inherently contain additives to protect against UV radiation. Therefore, pipes exposed to UV light should be covered with insulation or painted with UV-absorbing paint to prevent potential damage from prolonged UV exposure.
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SDR-35 PVC pipes are strong and lightweight
When it comes to plastic drainage pipes, PVC and ABS are perhaps the most common types. While standard PVC is a fantastic material for drainage pipes, it can be confusing to choose the right type due to the many variations available. One such variety is SDR-35 PVC pipes, which are strong and lightweight.
SDR-35 PVC pipes are strong and durable, with high-impact strength. They are specifically designed for underground non-pressure applications, such as gravity-fed waste elimination systems and sewer and drainage applications outside the building. These pipes are not intended for pressure use. The SDR-35 PVC pipes have thinner sidewalls compared to Schedule 40 pipes, making them lighter in weight.
Schedule 40 PVC pipes, on the other hand, are suitable for both pressure systems and DWV (drain, waste, and vent) applications. They are highly resilient and durable, with high-tensile and high-impact strength. Schedule 40 pipes are also available in a lightweight cellular PVC version that has the same dimensions as traditional PVC.
SDR-35 PVC pipes are manufactured with smooth inner walls, which provide a lower Manning coefficient. This allows for the use of smaller pipe diameters compared to rough-walled pipes. They are designed to meet the demands of service gravity storm and sanitary lines, gravity industrial lines, and private drain connections.
Overall, SDR-35 PVC pipes are a strong and lightweight option for underground drainage systems. They are easy to install and highly resistant to chemicals commonly found in sewage and industrial waste. With their advanced protection against cracking, leaking, and corrosion, SDR-35 PVC pipes have been successfully used for decades in various applications.
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Schedule 40 PVC pipes are lightweight and pass most codes
Schedule 40 PVC pipes are made from polyvinyl chloride (PVC), a durable and lightweight plastic material. The "schedule 40" designation refers to the pipe's wall thickness, which is medium-thick and correlates to its pressure capacity. Thicker walls generally mean that the pipe can handle more impact or stress. However, compared to Schedule 80 PVC pipes, Schedule 40 pipes have thinner walls, making them lighter and easier to handle during installation.
Schedule 40 PVC pipes are commonly used in residential homes, commercial buildings, and light-duty underground installations. They are suitable for both indoor and outdoor use due to their ability to resist corrosion and moisture. These pipes are also used in plumbing systems for potable water because they do not react with water and can withstand standard water pressure. They are ideal for irrigation systems, drainage systems, and low-pressure applications such as water transportation.
Schedule 40 PVC pipes are available in various diameters and lengths to suit different needs. They are rated for both pressure and non-pressure applications. When installing Schedule 40 PVC pipes, it is important to ensure precise measurements and cuts to achieve snug fittings. It is also crucial to avoid over-tightening, as excessive force can lead to cracks or compromised connections.
Schedule 40 PVC pipes are a popular choice due to their cost-effectiveness and ease of installation. They meet key industry standards, including UL 651 for electrical conduit and ASTM D1785 for pressure-rated plastic pipes, ensuring that they pass most codes. These pipes are lightweight yet strong and rigid, making them a versatile option for various applications.
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Frequently asked questions
The lightest plastic drain pipe is corrugated plastic piping. This is because the strength of corrugated piping comes from its outer wall design, not its thickness, as is the case with solid wall pipes.
Corrugated plastic piping is lightweight, easy to install, and flexible. It can be installed in very constrained areas, and it is less likely to crack or leak. It is also cheaper to transport than solid wall piping.
Corrugated plastic piping must be installed on a steeper slope (minimum 2%) to drain effectively.
Cellular PVC is a lightweight alternative to traditional PVC piping. SDR-35 PVC is another strong, lightweight option for outdoor drain lines.
Polypropylene piping is a good lightweight option for boilers as it can withstand higher temperatures than standard PVC.
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