ISO 1954 pdf download.Plywood — Tolerances on dimensions
1 Scope
This International Standard specifies dimensional tolerances of plywood panels (length, width, thickness) and tolerances for squareness and edge straightness.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendements to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 9425:1 989, Wood-based panels — Determination of moisture content ISO 9426-1 :1 989, Wood-based panels — Determination of dimensions — Part 1 : Determination of thickness, width and length.
3 Moisture content of panels
Moisture content shall be measured in accordance with ISO 9425. Tolerances are fixed with regard to a reference moisture content of (1 0 ± 2) %.
4 Tolerances on length and width
Length and width shall be measured in accordance with ISO 9426-1 . Tolerances on nominal size: ± 3,5 mm.
5 Tolerances on thickness
Thickness shall be measured in accordance with ISO 9426-1 .
6 Tolerance on straightness of edges
Measurement of the straightness of the edges will be the subject of a future International Standard.
Tolerance: 1 mm/m.
7 Tolerance on squareness
Measurement of squareness will be the subject of a future International Standard.
Tolerance: 1 mm/m.