Fibre-reinforced polymer composite crossarms
This Standard sets out the requirements for fibre-reinforced polymer (FRP) composite crossarms for use on overhead electrical systems.
FRP composite crossarms are used with connecting hardware and are part of a structure supporting overhead conductors and insulators that includes poles, guys, and anchors. This Standard specifies requirements for the FRP composite crossarm and does not address the overall structure as a system.
Note: An optional classification system is described in Table A.1 and is provided as an informative reference for users of the Standard.
The values given in SI units are units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.
Note: In the utilities industry, both metric and imperial units are found in common practice and so are both used in this Standard.
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.