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ISO 5257:2023

(Main)

Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens

Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens

This document specifies test methods, using small size specimens, suitable for determining the following mechanical properties of engineered bamboo products: tensile strength parallel-to-fibre; tensile modulus parallel-to-fibre; compressive strength parallel-to-fibre; tensile strength perpendicular-to-fibre; tensile modulus perpendicular-to-fibre; compressive strength perpendicular-to-fibre; compressive modulus perpendicular-to-fibre; shear strength parallel-to-fibre and shear modulus parallel-to-fibre. NOTE This document provides an alternative test method to ISO 23478. This document specifies test procedures for currently manufactured products as defined in 3.1 and 3.2 to evaluate material properties. The methods specified in this document are applicable to small size test specimens. The methods required to determine characteristic values, design values, or allowable values of the mechanical properties for a population are out of the scope of this document. Materials that do not conform to the definitions of bamboo scrimber or glued-laminated bamboo are beyond the scope of this specification.

Structures en bambou — Produits en bambou reconstitués — Méthodes d'essai pour la détermination des propriétés mécaniques à partir d'éprouvettes de petites tailles

General Information

Status
Published
Publication Date
11-Dec-2023
ICS
91.080.20 - Timber structures
Technical Committee
ISO/TC 165 - Timber structures
Drafting Committee
ISO/TC 165/WG 12 - Structural use of bamboo
Current Stage
6060 - International Standard published
Start Date
12-Dec-2023
Due Date
04-Sep-2023
Completion Date
12-Dec-2023
Ref Project

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ISO 5257:2023 - Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens Released:12. 12. 2023ISO 5257:2023 - Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens Released:12. 12. 2023
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ISO/FDIS 5257 - Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens Released:9/4/2023ISO/FDIS 5257 - Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens Released:9/4/2023
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REDLINE ISO/FDIS 5257 - Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens Released:9/4/2023REDLINE ISO/FDIS 5257 - Bamboo structures — Engineered bamboo products — Test methods for determination of mechanical properties using small size specimens Released:9/4/2023
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Standards Content (Sample)

INTERNATIONAL ISO
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

---------------------- Page: 1 ----------------------
ISO 5257:2023(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
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
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
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5257
ISO/TC 165
Bamboo structures — Engineered
Secretariat: SCC
bamboo products — Test methods
Voting begins on:
2023-09-18 for determination of mechanical
properties using small size specimens
Voting terminates on:
2023-11-13
Structures en bambou — Produits en bambou reconstitués —
Méthodes d'essai pour la détermination des propriétés mécaniques à
partir d'éprouvettes de petites tailles
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 5257:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 5257:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5257
ISO/TC 165
Bamboo structures — Engineered
Secretariat: SCC
bamboo products — Test methods
Voting begins on:
for determination of mechanical
properties using small size specimens
Voting terminates on:
Structures en bambou — Produits en bambou reconstitués —
Méthodes d'essai pour la détermination des propriétés mécaniques à
partir d'éprouvettes de petites tailles
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
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 5257:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 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 .
...

ISO/FDIS 5257:2023(E) Style Definition: Heading 1: Indent: Left: 0 pt, First
line: 0 pt, Tab stops: Not at 21.6 pt
ISO/TC 165
Style Definition: Heading 2: Font: Bold, Tab stops: Not
at 18 pt
Secretariat: SCC
Heading 3: Font: Bold
Style Definition:
Date: 2023-07-27xx Style Definition: Heading 4: Font: Bold
Style Definition: Heading 5: Font: Bold
Bamboo Structuresstructures — Engineered bamboo products — Test methods for
Style Definition: Heading 6: Font: Bold
determination of mechanical properties using small size specimens
Style Definition: ANNEX
Structures en bambou – Produits en bambou reconstitués – Méthodes d'essai pour la détermination des
Style Definition: AMEND Terms Heading: Font: Bold
propriétés mécaniques à partir d'éprouvettes de petites tailles
AMEND Heading 1 Unnumbered:
Style Definition:
Font: Bold

---------------------- Page: 1 ----------------------
ISO/FDIS 5257:2023(E)
© ISO 2023 Pattern: Clear
Formatted:
Pattern: Clear
Formatted:
All rights reserved. Unless otherwise specified, or required in the context of its implementation,
no part of this publication may be reproduced or utilized otherwise in any form or by any means,
electronic or mechanical, including photocopying, or posting on the internet or an intranet,
without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 5257:2023(E)
Contents Page
Foreword . iii
Introduction .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Reference population . 4
6 Sampling . 4
7 Conditioning of test specimens . 5
8 Test conditions . 5
9 Density and moisture content . 5
9.1 Density . 5
9.2 Moisture content . 5
10 Measurement of mechanical properties . 6
10.1 Tensile properties parallel-to-fiber . 6
10.1.1 Preparation of test specimens . 6
10.1.2 Test procedure . 7
10.1.3 Expression of results . 7
10.2 Compressive properties parallel-to-fiber .
...

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