This entry in the Iron Strong Blog compares the performance of Ductile iron pipe (DI pipe) to Polyvinyl Chloride (PVC) pipe against cyclic pressure variations in piping systems. Cyclic loading, or more accurately, cyclic surges, is a phenomenon where pressures in a pipeline frequently vary due to changes in demand, operating conditions, storage tank levels, treatment plants, and pump starts and shutdowns. Surges can also occur during common field operations such as exercising or flushing fire hydrants or valves within the system, which can drastically change flow parameters, causing surges or water hammers.
This Blog Reflects Significant Updates for Envision Manual V3. As we know, America's infrastructure is in crisis! According to the American Society of Civil Engineers, the estimated investment needed is $1 Trillion over the next 25 years for underground water infrastructure. This investment, as well as the ever-increasing cost of electricity, limited water supply, ever-decreasing natural resources, and environmental concerns, are driving the need for change. Change on how infrastructure is designed and constructed – utilizing more sustainable design and construction practices. ENVISION is designed to provide guidelines for these changes to North American infrastructure. In short, it is a rating system approach very similar to LEED Building Certification; however, with the focus on infrastructure.
Envision not only asks, ‘Are we doing the project right?’ but also, ‘Are we doing the right project?’
It’s a great day on the job site, and your crew is running hard—you're making up for lost time, possibly due to weather delays. You're expecting your next load of Ductile iron pipe (DI pipe) any minute, and your goal is to unload your pipe as safely and quickly as possible. Before you let the truck take off, you need to understand and follow these guidelines before receiving your pipe.
After being in the water and sewer industry for almost 15 years, I can safely say a question I hear frequently is “Can Protecto 401™ be used in potable water service applications?” And that is exactly what we are going to talk about in this Iron Strong Blog. We all know it when we see it, the pipe with the red bell and spigot. It sticks out like a sore thumb so that it can be noticed without any confusion. But where can it be used and what is its purpose?
If you're like most people, you probably don't sit around thinking about how much Ductile iron pipe (DI pipe) weighs so in this Iron Strong Blog we are going to tell you where to find the weight of the pipe and why it is essential to familiarize yourself with the weight of the pipe.
Over the years, I have spoken with numerous engineers, utilities, and municipalities, and there seems to be a disconnect when it comes to the overall understanding of when and where cement-mortar-lined pipe can be used in wastewater applications. Due to these grey areas, engineers and owners often specify specialty linings for an entire project when the line could have been specified as either cement-mortar lined ductile iron pipe only or a mixture of specialty lined and cement-lined pipe.
A common question that many sales reps in the Ductile iron pipe (DI pipe) industry have heard over the years is, "Are you sure you’ve quoted the 3” and 4” pipe correctly?” Once that price is confirmed, the follow-up question from the customer is usually “Why in the world does it cost so much?” Well, there are many reasons for the higher cost, and in this Iron Strong Blog, we will offer some insight into that question.
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.
In this second installment of our Iron Strong Blog on Sustainability and Resiliency, we will focus on recycling and the recyclability of various pipe materials. As you may know, Ductile iron pipe is made from recycled iron and steel scrap, making it not only a recycled product but a recyclable product.
Okay, since that fact has been stated, why read further? Well, besides being the only primary full-size-range piping product made from recycled material, you should know why this is important to you, me, and everyone else. We will look at the impact of recycling on cities and towns as well as countries and the planet.
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.
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