This Standard specifies design/manufacturing safety requirements, test requirements, safe operation requirements and others for portable metal ladders.
This Standard is applicable to portable metal extension ladder (two-section or three-section extension ladders), portable metal single ladder, portable metal stepladder and portable metal combination ladder used on production activities.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these labels are applied or not. For undated references, the latest edition of the normative document is applicable.
GB/T 17889.1 Ladder - Part 1: Terms, Type and Function Dimensions
3 Terms and Definitions
For the purposes of this Standard, the following terms and definitions and the ones given in GB/T 17889.1 apply.
3.1
Portable metal extension ladder
Portable leaning ladder formed by two or three sections, whose length is adjustable and primary members (stile and step/rung) are metallic material made
3.2
Portable metal single ladder (straight ladder)
Portable leaning ladder formed by only a section, whose length is non-adjustable and primary members (stile and step/rung) are metallic material made
3.3
Portable metal stepladder
