Thermoplastics fittings. Determination of ring stiffness1 Scope This International Standard specifies a method of determining the ring stiffness of bends and branches made from thermoplastic material and for use with plastics pipes having a circular cross section. The method can be used to determine the stiffness of bends, equal branches and unequal branches, provided the fitting allows a diametric deflection of at least 4 %. NOTE 1 If a fitting has the same wall thickness, wall construction, material and

but now also includes much more of the basic information engineers need on a regular basis that are the essentials of engineering specification

assembly and testing

gaps around windows

these components relate to the following sub-domains:

see IEC 62363

Part 2 - Guidelines for the application of PAS 55-1

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Limits of application of validated methods to assessments of pantographs and overhead contact lines

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What does BS ISO 15686-5 include

2 of Part 1

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