1.1 The guidance given in this appendix is in
addition to the requirements of 4.19, where applicable to non-metallic
materials.
1.2 The manufacture, testing, inspection and documentation
of non-metallic materials should in general comply with recognized
standards, and with the specific requirements of this Code, as applicable.
1.3 When selecting a non-metallic material, the
designer should ensure that it has properties appropriate to the analysis
and specification of the system requirements. A material can be selected
to fulfil one or more requirements.
1.4 A wide range of non-metallic materials may
be considered. Therefore, the section below on material selection
criteria cannot cover every eventuality and should be considered as
guidance.