ISO 24322:2024

Timber structures — Methods of test for evaluation of long-term performance — Part 1: Wood-based products in bending

This document gives methods of determination of duration of load and creep factors under bending actions at ambient temperatures for a defined population of structural timber products such as solid timber, LVL, OSB, plywood, particleboard, I-beams calculated from test values. It presents methods for a) determining the duration of load and creep factors for new timber products, b) establishing whether a previously defined set of duration of load and creep factors can be applied to a tested product, and c) an optional method for establishment of sensitivity of duration of load and creep factors to changes in environmental conditions. NOTE 1 This document is intended to apply to wood-based products for which a duration of load factor or a creep factor is used in design. NOTE 2 The effect of elevated temperature on the duration of load factor and creep factor that is derived using these methods for use with timber products can need additional consideration.

Structures en bois — Méthodes d'essai pour l'évaluation du comportement à long terme — Partie 1: Produits à base de bois en flexion

General Information

• Status: Published
• Publication Date: 03-Jan-2024
• ICS: 91.080.20 - Timber structures
• Technical Committee: ISO/TC 165 - Timber structures
• Drafting Committee: ISO/TC 165/WG 10 - Characteristic values and design specifications
• Current Stage: 6060 - International Standard published
• Start Date: 04-Jan-2024
• Due Date: 09-Sep-2023
• Completion Date: 04-Jan-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 24322
First edition
Timber structures — Methods of
test for evaluation of long-term
performance — Part 1: Wood-based
products in bending
Structures en bois — Méthodes d'essai pour l'évaluation du
comportement à long terme — Partie 1: Produits à base de bois en
flexion
PROOF/ÉPREUVE
Reference number
ISO 24322:2023(E)
© ISO 2023

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ISO 24322:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved

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ISO 24322:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols (and abbreviated terms) . 2
5 Reference population .3
6 Sampling . 4
6.1 Sampling method . 4
6.2 Matched groups within a sample . 4
6.3 Sample size . 4
7 Sample conditioning prior to testing .5
8 Bending tests . 5
8.1 Test method . 5
8.1.1 General . 5
8.1.2 Load location on specimens . 5
8.1.3 Load configuration . 5
8.1.4 Deformation measurements . 6
8.1.5 Reporting failure results .
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ISO/PRF 24322
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ISO/TC 165/WG10/N 000
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Date: 2023-10-19 .
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ISO 24322:2023(E)
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ISO/TC 165/WG 10
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Secretariat: SCC
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Timber structures — Methods of test for evaluation of long-term
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performance –— Part 1: woodWood-based products in bending
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Copyright notice
ThisStructures en bois — Méthodes d'essai pour l'évaluation du comportement à long terme — Partie 1:
Produits à base de bois en flexion
PROOF

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ii © ISO 2023 – All rights reserved

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ISO/PRF 24322:2023(E) Font: 11 pt
Formatted:
Formatted: Font: 11 pt
Formatted: Header, Left, Space After: 0 pt, Line
Contents Page spacing: single
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Foreword . vii
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stops: Not at 17.2 cm
Introduction. viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions .
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