ISO 8904:1990
(Main)Broadleaved sawn timber — Sizes — Methods of measurement
Broadleaved sawn timber — Sizes — Methods of measurement
Specifies the methods of measurement of the length, width, thickness and volume of sawn timber. Applies to unplaned, square-edged and unedged sawn timber
Sciages de bois feuillus — Dimensions — Méthodes de mesurage
General Information
- Status
- Published
- Publication Date
- 14-Nov-1990
- Technical Committee
- ISO/TC 218 - Timber
- Drafting Committee
- ISO/TC 218/WG 3 - Sawn and processed timber
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 01-Aug-2024
- Completion Date
- 14-Feb-2026
Overview
ISO 8904:1990 establishes international methods for measuring the size of broadleaved sawn timber, specifically focusing on the length, width, thickness, and volume of sawn timber pieces. Developed by the International Organization for Standardization (ISO), this standard applies to unplaned, square-edged, and unedged sawn timber made from broadleaved species. The purpose is to provide clear, uniform, and reliable measurement techniques for manufacturers, suppliers, and buyers in the timber industry, supporting consistency and quality across global markets.
Key Topics
Measurement of Length: Specifies the process for determining the minimum distance between the two ends of a sawn timber piece, with both ends cut perpendicular to the timber’s longitudinal axis.
Measurement of Width:
- Square-edged timber with parallel edges: Measured at any place along the length where there is no wane, at least 150 mm from the end.
- Square-edged with tapered edges: Measured at mid-length at a location free of wane.
- Unedged timber: Measured on both faces at the midpoint; the average of both measurements is used, disregarding bark.
- Unedged timber under 40 mm thick: Measured along the narrower face at the midpoint.
- All width measurements are rounded to the nearest 10 mm.
Measurement of Thickness: Can be taken at any place along the length, no closer than 150 mm to an end.
Volume Calculation:
- Individual pieces: Volume is the product of nominal thickness, width, and length, expressed in matching units.
- Lots of sawn timber: Volume calculated and rounded to the nearest 0.001 m³.
Use of Standardized Terms: Relies on definitions outlined in ISO 1032 for terminology related to sawn timber.
Applications
The measurement methods specified in ISO 8904:1990 are essential for:
- Timber Producers and Processors: Ensuring that broadleaved sawn timber is measured consistently to meet buyer and regulatory requirements.
- Quality Control and Inspection: Facilitating reliable assessment and comparison of timber products across different suppliers and markets.
- Trade and Procurement: Providing standard guidelines for timber sizing, which support fair trade, accurate pricing, and contract fulfilment.
- Regulatory Compliance: Assisting organizations in aligning with international best practices and legal frameworks for timber products.
By using ISO 8904:1990, stakeholders can minimize disputes regarding measurements, enhance product quality, and improve supply chain efficiency in the timber industry.
Related Standards
- ISO 1032:1974 - Coniferous sawn timber - Sizes - Terms and definitions: Provides key terminology and definitions relevant to the measurement of sawn timber, referenced in ISO 8904:1990.
- ISO/TC 55: The technical committee responsible for the development of standards related to sawn timber and sawlogs, including ISO 8904.
For best practice, users are encouraged to reference the latest versions of these related standards to ensure full compliance and awareness of current measurement guidelines.
Keywords: ISO 8904:1990, broadleaved sawn timber, timber measurement methods, sawn timber size, timber thickness, timber width, timber volume calculation, timber industry standards, international timber measurement, square-edged sawn timber, unedged timber measurement.
Buy Documents
ISO 8904:1990 - Broadleaved sawn timber — Sizes — Methods of measurement Released:11/15/1990
ISO 8904:1990 - Sciages de bois feuillus — Dimensions — Méthodes de mesurage Released:11/15/1990
ISO 8904:1990 - Sciages de bois feuillus — Dimensions — Méthodes de mesurage Released:11/15/1990
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Frequently Asked Questions
ISO 8904:1990 is a standard published by the International Organization for Standardization (ISO). Its full title is "Broadleaved sawn timber — Sizes — Methods of measurement". This standard covers: Specifies the methods of measurement of the length, width, thickness and volume of sawn timber. Applies to unplaned, square-edged and unedged sawn timber
Specifies the methods of measurement of the length, width, thickness and volume of sawn timber. Applies to unplaned, square-edged and unedged sawn timber
ISO 8904:1990 is classified under the following ICS (International Classification for Standards) categories: 79.040 - Wood, sawlogs and sawn timber. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 8904:1990 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
IS0
INTERNATIONAL
STANDARD
First edition
1990-l 2-01
Broadleaved sawn timber - Sizes - Methods
of measurement
Sciages de bois feuillus - Dimensions - Methodes de mesurage
Reference number
IS0 8904: 1990(E)
IS0 8904:1990(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees- Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the
work. IS0 collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an lnter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard IS0 8904 was prepared by Technical Committee
ISO/TC 55, Sawn timber and sawlogs.
0 IS0 1990
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without
permission in writing from the publisher.
I Organization for Standardization
lnternationa
Case Postal e 56 l CH-121 1 Geneve 20 0 Switz erland
Printed in Switzerland
ii
-.~---
IS0 8904:1990(E)
INTERNATIONAL STANDARD
Broadleaved sawn timber - Sizes - Methods of
measurement
4.2 The width of sawn timber shall be measured
1 Scope
as follows:
This International Standard specifies the methods
a) for square-edged sawn timber with parallel
of measurement of the length, width, thickness and
edges: at any place along the length of sawn
volume of broadleaved sawn timber.
timber where there is no wane, but not less than
150 mm from one of the ends;
It is applicable to unplaned, square-edged and un-
edged broadleaved sawn timber.
b) for square-edged sawn timber with tapered
edges: at the mid-length of the face of sawn tim-
2 Normative reference
ber and at a place where there is
...
NORME
INTERNATIONALE
Première édition
1990-î 2-01
Sciages de bois feuillus - Dimensions -
Méthodes de mesurage
Broadleaved sawn timber - Sizes - Methods of measuremenf
--
Numéro de référence
ISO 8904: 1990(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération
mondiale d’organismes nationaux de normalisation (comités membres
de MO). L’élaboration des Normes internationales est en général
confiée aux comités techniques de I’ISO. Chaque comité membre inté-
ressé par une étude a le droit de faire partie du comité technique créé
à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO participent également aux tra-
vaux. L’ISO collabore étroitement avec la Commission électrotechnique
internationale (CEI) en ce qui concerne la normalisation électrotech-
nique.
Les projets de Normes internationales adoptés par les comités techni-
ques sont soumis aux comités membres pour vote. Leur publication
comme Normes internationales requiert l’approbation de 75 % au moins
des comités membres votants.
La Norme internationale ISO 8904 a été élaborée par le comité techni-
que ISO/TC 55, Bois sciés et grumes à sciages.
0 ISO 1990
Droits de reproduction réservés. Aucune partie de cette publication ne peut être repro-
duite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou
mécanique, y compris la photocopie et les microfilms, sans l’accord écrit de l’éditeur.
internationale de normalisation
Organisation
Case Postale 56 l CH-1211 Genève 20 l Suisse
Imprimé en Suisse
ii
NORME INTERNATIONALE
Sciages de bois feuillus - Dimensions - Méthodes de
mesurage
4.2 La largeur du sciage doit être mesurée de la
1 Domaine d’application
manière suivante:
La présente Norme internationale prescrit les mé-
a) pour les sciages avivés, à rives parallèles: en
thodes de mesurage de la longueur, de la largeur,
tout endroit de la longueur du sciage où il n’y a
de l’épaisseur et du volume des sciages de bois
pas de flaches, mais au moins à 150 mm des
feuillus.
...
NORME
INTERNATIONALE
Première édition
1990-î 2-01
Sciages de bois feuillus - Dimensions -
Méthodes de mesurage
Broadleaved sawn timber - Sizes - Methods of measuremenf
--
Numéro de référence
ISO 8904: 1990(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération
mondiale d’organismes nationaux de normalisation (comités membres
de MO). L’élaboration des Normes internationales est en général
confiée aux comités techniques de I’ISO. Chaque comité membre inté-
ressé par une étude a le droit de faire partie du comité technique créé
à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO participent également aux tra-
vaux. L’ISO collabore étroitement avec la Commission électrotechnique
internationale (CEI) en ce qui concerne la normalisation électrotech-
nique.
Les projets de Normes internationales adoptés par les comités techni-
ques sont soumis aux comités membres pour vote. Leur publication
comme Normes internationales requiert l’approbation de 75 % au moins
des comités membres votants.
La Norme internationale ISO 8904 a été élaborée par le comité techni-
que ISO/TC 55, Bois sciés et grumes à sciages.
0 ISO 1990
Droits de reproduction réservés. Aucune partie de cette publication ne peut être repro-
duite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou
mécanique, y compris la photocopie et les microfilms, sans l’accord écrit de l’éditeur.
internationale de normalisation
Organisation
Case Postale 56 l CH-1211 Genève 20 l Suisse
Imprimé en Suisse
ii
NORME INTERNATIONALE
Sciages de bois feuillus - Dimensions - Méthodes de
mesurage
4.2 La largeur du sciage doit être mesurée de la
1 Domaine d’application
manière suivante:
La présente Norme internationale prescrit les mé-
a) pour les sciages avivés, à rives parallèles: en
thodes de mesurage de la longueur, de la largeur,
tout endroit de la longueur du sciage où il n’y a
de l’épaisseur et du volume des sciages de bois
pas de flaches, mais au moins à 150 mm des
feuillus.
...
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