Related papers
2006 Washington DC : Development of a Whole Life Costing Model for Large Diameter Water MainsAuthor(s) : Shepherd, Headford, Jordan, Reeves, Walton
In Europe polyethylene (PE) has been chosen almost exclusively for gas mains for many
years because of economic, technical and safety reasons but in the water industry a number of
different materials are still used for pressure water mains. Indeed at sizes above 355mm (14
inch) most new large diameter water mains are...
2004 Milan : 20+ Years Experience with PE Pipe for Water in the UKAuthor(s) : Headford, Hill, Wilson
The United Kingdom is the most highly developed PE pressure pipe market in the world.
Following pioneering work done in the USA and Germany, it was the UK that was first to
adopt PE on a large scale for gas, and then for water distribution. The 100% PE policy of
British Gas, and wide range of sizes used (at low...
2004 Milan : The Above Ground Design of Plastic Pipe Systems for Process FluidsAuthor(s) : MacKellar, Headford, Ingham
This paper provides an overview of the basic properties of plastic pipes, in the range 50mm to
400mm, and how these should be used in the design of above ground process pipe systems
made of PE and PVC. It covers the basic properties of plastics, examples of the determination
of load cases and describes the basic types...
2001 Munich : Butt Fusion Welding of Large Diameter/Thick Wall PipesAuthor(s) : Hill, Wilson, Headford
Butt fusion welding is the most reliable and unobtrusive method of joining PE pipes
(and spigot fittings) of virtually any size-except perhaps the smallest where other methods
are usually preferred. It is the dominant method of jointing both medium and large pipe
sizes, but for different reasons. In medium pipe sizes...
1998 Gothenburg : Jointing Methods for Plastics Pipeline SystemsAuthor(s) : Headford
Jointing Methods for Plastics Pipeline Systems AL Headford (Durapipe S & LP, UK) ee Introduction The basic requirements for pipe Jointing are common to all pipe systems made from any material (including traditional materials), whether they be for sealed pressure usage or non-pressure usage. These are
a) minimal...
1995 Edinburgh : Taking the stress and strain of buried thermoplastic pipe designAuthor(s) : Boot, Headford
This paper summarises current design practices for buried thermoplastic pipelines subjected to combined
gravity and internal pressure loadings. It suggests that accurate predictions of stabilised deformations are
neither possible nor necessary, but that appropriate structural design methodologies should instead...
1995 Edinburgh : The Resistance of PE Water Pipeline Systems to Surge PressureAuthor(s) : Beech, Headford, Hunt, Sandilands
The guldeUnes g h n in BS CP 312 :Pwt 2 : 1973 w e recommended to the UK toater
industryfor the deslgn of polyethylene pfpeline systems to toke inin account the
effects of tmnsient [surge) pressurejluctuatlons with respect to fatigue (ref.1). These
guIdelInes we based on earlier experience wlth PVC-Usewer h i n g...
