Have you ever considered how high temperatures impact your choice of piping material for a water system? It might not be something that comes to mind immediately, but it’s an important factor. Water treatment specialists pay close attention to water temperatures because they influence how the water reacts to treatment chemicals. Additionally, water and ground temperatures can significantly affect the performance of certain piping materials, particularly polyvinyl chloride (PVC).
Over the course of my 30+ year career with McWane Ductile, I’ve had the opportunity to be a part of some remarkably interesting and detailed water pipeline projects. Several of these projects have required a partnership between the community, awarding authority, contractor, water works distributor, and material manufacturer to ensure the projects were installed efficiently and correctly. However, few have matched the scale, complexity, and collaborative effort of the Saugus River crossing—part of the massive Belden Bly Bridge Replacement Project in Massachusetts. This project stands out not only for its technical challenges but also for the preparation, planning, and collaboration of key partners that brought it to a successful conclusion. In this #IronStrong Blog, you’ll hear the when, why, who, and how of this complex and intricate Ductile iron pipe (DI pipe) waterway crossing.
Can McWane Ductile provide bonded coatings? A good question recently posed and more frequently asked due to a greater recognition of potential corrosive environments. To correctly address this question, some other questions need to be answered first.
“Why should I use Ductile iron pipe?”
The question is ostensibly meant to include “instead of other types of piping material.” Well, the reasons are vast and vary depending on project requirements. Since we aren’t talking about a specific project, we’ll look at the general overriding reasons Ductile iron pipe is the best choice for your piping projects.
Question – What is the difference between Ductile Iron and Polyvinyl Chloride (PVC)? Answer – Many things, but some groups may attempt to “muddy the waters” with inaccurate information regarding the two materials.
With the information that follows, we will take a closer look at what really separates Ductile Iron from PVC and why it matters.
Sustainability and Resiliency are today's buzzwords, especially concerning water and wastewater systems, but what does this really mean to you, the designer, manager and/or operator? Utility people today are bombarded with the answer to this question, and we believe that there is no one answer because every system is unique and experiences different priorities and different challenges.
Gaskets Are Great
Rubber gaskets are the reliable workhorse of any Ductile iron pipe (DI pipe) joint. They provide long-lasting flexibility and a watertight seal against internal pressures upwards of 1,000 psi.
What they don’t do, however, is bind the joint longitudinally against such forces. In fact, without assistance from other variables, a push-on or mechanical joint of any diameter would calmly separate lengthwise against pressures as low as 50 psi.
Cement-mortar lining for iron pipe has been used for nearly 100 years. The first installation of gray iron pipe with a cement lining was recorded in Savannah, GA in 1922. Todays modern Ductile iron pipe still utilizes cement lining for a safe and reliable means of providing clean drinking water to millions of people every day.
On occasion, however, the cement lining may have incurred some damage in the field. The lining, although very durable, does not have the same resistance to bending stress or impact as the pipe itself. Certainly, the pipe or fitting should be checked for further structural damage, but once determined the affected area is only the cement lining, repairs can be made under the applicable provisions within the ANSI/AWWA C104/A21.4 standard CEMENT-MORTAR LINING FOR DUCTILE IRON PIPE AND FITTINGS.
Have you ever wondered what’s behind the AWWA standards? What do they mean? And why do we need them? They’re listed all the time in specifications, mysterious numbers on plans. Have you ever reviewed them to know why they are important for working with Ductile iron pipe (DI pipe)? In this Iron Strong Blog, we will briefly cover some of the applicable standards for DI pipe and how they help you complete your job safely, successfully, and on time.
Utility pipelines provide for some of the most basic needs within our society. Essential services, such as supplying potable drinking water to our homes and businesses or sending wastewater away, are possible because of a network of buried pipelines. Whatever pipeline materials are used, they are expected to meet minimum service qualities such as withstanding leakage. This resiliency to leakage eliminates waste of our precious drinking water and prevents polluted soils from wastewater in the pipeline's proximity.
In a continuous effort to make your job easier, we have developed an online submittal builder to quickly and neatly package your personalized presentation.
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Looking for answers to your DI pipe questions? Find decades of Ductile iron expertise with installation guides, videos, tip sheets, training resources, and more in our Learning Center.
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