AS 4176.1:2010 pdf – Multilayer pipes for pressureapplications Part 1: Multilayer piping systems for hotand cold water plumbing applications-General

AS 4176.1:2010 pdf – Multilayer pipes for pressureapplications Part 1: Multilayer piping systems for hotand cold water plumbing applications-General.
application layer
layer WhiCh provides a specific property linked to the conditions of use of the pipe
3.2 Definitions related to geometry
3.2.1
nominal diameter
d
specified outside diameter, in millimetres, assigned to a nominal size (DN/OD or DNIID)
3.2.2
outside diameter
de
outside diameter measured through the pipe cross-section at any point on the pipe, or the spigot end of a filling, rounded up to the nearest 0,1 mm
3.2.3
inside diameter
inside diameter measured through the pipe cross-section at any point on the pipe, rounded up to the nearest 0.1 mm
3.2.4
wall thickness
C
measured wall thickness at any point around the circumference of a component, rounded up to the nearest 0,1 mm
3.2.5
minimum wall thickness
minimum value of the measured wall thickness at any point around the circumference of a component, rounded up to the nearest 0.1 mm
32.6
metal layer standard dimension ratio SDRm
outside diameter of the metal layer of a pipe divided by the wall thickness of the metal layer
3.2.7
polymeric layer standard dimension ratio
SDR
outside diameter of the polymeric layer of a pipe divided by the wall thickness of the polymeric layer
3.3 Definitions related to service conditions
3.3.1
overall service (design) coefficient
C
overall coefficient, with a value greater than one, which takes into consideration service conditions as well as properties of the components of a piping system other than those represented in the lower confidence limit,
PLPL
3.4 Definitions related to materials
3.4.1
virgin material
material, in a form such as granules or powder, that has not been subjected to use or processing other thanthat required for its manufacture and to which no reprocessable or recyclable material has been added
3.4.2
own reprocessable material
single material prepared from rejected unused pipes and fittings, including trimmings from the production ofpipes and fittings, that will be reprocessed in a manufacturer’s plant after having been previously processedby the same manufacturer by a method such as moulding or extrusion and for which the complete formulationis known
3.4.3
reference product standard
International Standard or draft International Standard，prepared by ISO/TC 138/SC 2， applicable to non-multilayer pipes,to which this International Standard can refer’for clauses related to the materials,components (e.g. fittings) and fitness for purpose of the system
3.4.4
stress-designed polymeric layer
polymeric layer which is designed to be stress-bearing
NOTE The material used in such layers is restricted to those in the reference product standards(see Annex A).3.5Definitions related to material characteristics
3.5.1
application class
ciass related to a typical field of application and a design period of 50 yearsNOTE The classification is taken from Iso 10508.
3.5.2
design pressurePD
highest pressure related to the circumstances for which the system has been designed and is intended to beused
NOTE
The design pressure, pp, is equal to the maximum design pressure,MDP, as specified in EN 806-1.
3.5.3
long-term pressure strength
lower confidence limit of the predicted hydrostatic pressurePLPL
quantity,with the dimensions of pressure,which represents the 97,5 % (one-sided) lower confidence limit ofthe predicted hydrostatic pressure at a temperature T and time t