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STANDARD 5257
First edition
2023-12
Bamboo structures — Engineered
bamboo products — Test methods
for determination of mechanical
properties using small size specimens
Structures en bambou — Produits en bambou reconstitués —
Méthodes d'essai pour la détermination des propriétés mécaniques à
partir d'éprouvettes de petites tailles
Reference number
ISO 5257:2023(E)
© ISO 2023
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ISO 5257:2023(E)
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© 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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Published in Switzerland
ii
© ISO 2023 – All rights reserved
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ISO 5257:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Reference population .4
6 Sampling . 4
7 Conditioning of test specimens . 4
8 Test conditions .5
9 Density and moisture content . 5
9.1 Density . 5
9.2 Moisture content . 5
10 Measurement of mechanical properties. 5
10.1 Tensile properties parallel-to-fibre. 6
10.1.1 Preparation of test specimens . 6
10.1.2 Test procedure. 6
10.1.3 Expression of results . 7
10.2 Compressive pr
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