Papers
Plastic Pipes Conference Association # 2014 Chicago
Christophe Salles, Christoph Stamm, Hugo Hammar
Traditional piping materials e.g. metals are becoming outdated due to their high weight, difficult handling and questionable performance over time. These are only a few of the reasons why plastics have rapidly become the preferred pipe material over the last few decades. PP-RCT (PolyPropylene Random Crystalline Temperature), the high performing PP-R pipe class, has over the last years established itself on the market, thus gaining access to further benefits both for installers and building owners.
Recently adopted in the EN ISO 15874 standard (Plastics piping systems for hot and cold water installations – Polypropylene, PP), PP-RCT facilitates an improved resistance to hydrostatic pressure, especially at elevated temperatures resulting in a beneficial pipe design with, for example, higher hydraulic capacity. These very capabilities of PP-RCT allow increases in both the performance and in the competitiveness for PP-R pipe producers and end-users, and in addition also offer the potential of entering into more demanding applications such as their use in skyrise buildings.
This paper will examine the PP-RCT material class and its capabilities, and showcase the high-profile case study of recently installed PP-RCT pipes at The King Abdullah Financial District (KAFD), a mega development launched in 2007 near King Fahad Road in the Asahafa area of Riyadh, Saudi Arabia. Including some 34 towers and ranging from 20 to 80 floors, the buildings of the KAFD include many world class skyscrapers with the very highest demands on their piping networks.
The job of the mains is both to transport the cooling water needed for the climate control systems as well as to serve for the hot water distribution, and planners are looking for an efficient pipe concept offering high performance and capacity with easy handling and installation. It is in these areas where PP-RCT has been established as the preferred solution and the KAFD development is a living proof of how new developments such as PP-RCT can stretch the use of plastics piping into new applications.
Related papers
Author(s) : Ajay Taraiya, Peter Degenhart, Mark Boerakker
In PPXX, a technology was presented for the first time that could bi-axially orient polyolefin pipes. With this technology, it is possible to prepare pipes that have a performance far beyond the standard ones. One approach to achieving this performance is via a continuous in-line process. To optimize the in-line...
Author(s) : Olivera Bilic, Vivek Rohatgi, Brody Peterson, David Hukill
Demand for conduit pipe is expected to surge globally due to rapid industrialization and urbanization in residential and commercial sectors. Just in the U.S., according to Market Research analysis, expected growth of the plastic conduit pipe market is at a CAGR of more than 5% over the next ten years. In response to...
Author(s) : Joseph Melesio Venegas
Digital tools can be a catalyst to accelerate the change we need to meet the goals of the Paris Climate Agreement (“The Paris Agreement”). Across all industries and all walks of life we need to speed up the pace of sustainable innovation. Fortunately, within the plastic pipe industry we have several forms of...
Author(s) : Dolores Herran
MOLECOR continuing with its line of leading water infrastructure sector with its technological products, has recently developed a software that can be used through a mobile application or web browser with which users can digitalize and geolocate the different pieces that form a water infrastructure network. This is a...
Author(s) : Yi Zhong, Qianshi Ma, Haihua Yu
BSTRACT The residential district adopts central heating for low temperature radiators system. Due to the disrepair of the secondary heating pipe network that pipe from heat exchange station to user entrance, the running, leaking, dripping and leakage are serious, and the accidents occur frequently. The heat...
Author(s) : Amster Howard
This paper explores the use of a composite soil stiffness as a valuable design tool to consider when a pipeline traverses through poor soil conditions. Thermoplastic pipe are flexible pipe and require good soil support at the sides of the pipe to minimize deflection. However, sometimes the trench walls are weak soils...
Author(s) : Michael O’Rourke
The required wall thickness for a fully fused HDPE water main subject to an earthquake induced lateral spread is addressed in this paper. The water main is assumed to be buried via cut and cover (i.e., open cut with typical burial depths in the 2 to 15 feet range) procedures and any laterals have small diameters. For...
Author(s) : James F. Mason, Akshay Ponda, Hermann van Laak, Tobias Bauer
The long-term strength of unplasticized polyamide 12 (PA-U12) has been characterized using standard methods for plastic pressure pipe during the qualification process for use in buried piping systems for natural gas delivery operating at low ambient temperatures, usually less than 20 to 30°C at pressures...
Author(s) : Dr. Michael Pluimer, Sara Stone
The Notched Constant Ligament Stress test (NCLS test, ASTM F2136)[1] is a test method that measures the slow crack growth in High Density Polyethylene. The NCLS test requires a notch on all test specimens to act as a stress concentration at that point so crack propagation can be easily predicted and studied. In...
Author(s) : Sunwoong Choi, Robert Stakenborghs , Pyeongan Lee, Byoungho Choi
This work developed a hydro-axial tension (HAT) test as a whole pipe axial tensile test and applied to evaluate the polyethylene (PE) pipe and fusion joints containing various flaws. HAT test was designed to utilize hydrostatic pressure to cause axial tension in pipes. The experimental and numerical analysis was...
Author(s) : Norbert Jansen
A practical requirement of temperature resistance of minimum 50 years at 70°C was established for the extra high voltage (EHV) corridor projects in Germany. Experts have debated what tests are best suited to prove the suitability of a pipe resin for cable protection pipes which may be installed hastily and under...
Author(s) : Jacob John, Suresh Shenoy, Patrik Roseen
Cross-linked polyethylene (PEX) pipes continue to gain popularity in plumbing and indoor climate applications around the globe. This study focuses on increasing the sustainability of PEX pipes by utilizing recycled PEX and production waste streams into PEX production. Different methods available for recycling and the...
Author(s) : Aisha Khaleel, Suleyman Deveci, Sulistiyanto Nugroho, Fatima AlHameli
The use of polyethylene pipes in transportation networks of pressurized water and gas have shown superb performance over the history. High density, high-molecular-weight, and bi-modal polyethylene materials, known as PE80, PE100 and PE100RC, have successfully served the market for many years in standard applications....
Author(s) : Jessica Hinczica, Mario Messiha, Florian Arbeiter, Gerald Pinter
In Europe, only 1.8 million tons of recycled material is processed in new products within the building and construction sector [1]. Recyclates and blends of recyclates with virgin materials are already used for different products in the plastic pipe industry, such as cable trays, or storm water management...
Author(s) : Michael Pluimer, Christian Herrild, Patrick Vibien
With enhanced interest in a circular economy and the potential use of recycled HDPE within HDPE conduit, a research project was undertaken to investigate the necessary technical requirements when using recycled HDPE. High Density Polyethylene (HDPE) conduit is a durable product designed to protect cables...
Author(s) : Mitsuaki TOKIYOSHI, Yutaka SAWADA, Yasuhiko OTSUKI, Kensei INOUE, Takashi KURIYAMA, Toshinori KAWABATA
Polyethylene reinforced with short glass fibres (PE-sGF) pipe, manufactured by combining short fiber glass (sGF) with PE100 as a reinforcing material, has a higher pipe rigidity in the pipe circumferential direction than that of PE100 because of the reinforcing effect of the reinforcing material and a performance...
Author(s) : Kevin White, Shad Sargand
The current standard of practice for the installation of agricultural mains is in accordance with ASTM F449, Standard Practice for Subsurface Installation of Corrugated Polyethylene Pipe for Agricultural Drainage or Water Table Control. ASTM F449 has several limitations. Currently, the allowable maximum height of...
Author(s) : Carine Lacroix, Philippe Louvel, Danielle Mark, Dominique Gueugnaut
A test program was carried out on two Polyamide resins, Polyamide 11 (PA11) and Polyamide 12 (PA12), both certified for gas networks. Polyamide’s advantage lies in its implementation, similar to that of polyethylene, and its properties allowing it to operate at up to 18 bar for gas, all other conditions being equal....
Author(s) : Dr. Tania Weyland, Dr. Tobias Eltze, Dr. Rolf Wittlinger, Marie-Laure Bertet, Gregor Huber
A significant amount of water is lost in transit from the water treatment plant to the consumer. A major cause of water leakages is the deterioration of assets including the use of disinfectants. Using chlorine-based disinfectants is known to be extremely effective in eliminating waterborne pathogens, but they also...
Author(s) : Peter Sejersen, Ludo Debever
Microplastics in drinking water and in food in general has been a topic with ever increasing interest since a publication of a study in the British newspaper The Guardian. The microplastics topic has also high focus on governmental level, e.g. in Germany where a report of Fraunhofer Umsicht /1/ estimates the amount...
Members of the Association
