ISO 22157:2019

Bamboo structures — Determination of physical and mechanical properties of bamboo culms — Test methods

This document specifies test procedures for specimens obtained from round bamboo culms. The data obtained from the test methods can be used to establish characteristic physical or mechanical properties to be used in structural engineering design or for other scientific purposes. This document provides methods for evaluating the following physical and strength properties: moisture content, density, mass per unit length; strength properties parallel to the fibre direction, compression, tension and bending, and strength properties perpendicular to the fibre direction, tension and bending. It also provides methods to estimate moduli of elasticity in bending, compression and tension parallel to fibres, and bending perpendicular to fibres. The test methods reported in this document are intended for commercial testing applications. The test methods reported in this document are intended for commercial testing applications and can also be adopted as benchmark methods for scientific research. This document is organized to provide requirements for standard tests to be carried out to determine the material properties of full-culm bamboo as a structural material.

Structures en bambou — Détermination des propriétés physiques et mécaniques des tiges de bambou — Méthodes d'essais

General Information

• Status: Published
• Publication Date: 17-Jan-2019
• ICS: 79.040 - Wood, sawlogs and sawn timber
• Technical Committee: ISO/TC 165 - Timber structures
• Drafting Committee: ISO/TC 165/WG 12 - Structural use of bamboo
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2024
• Completion Date: 15-Jan-2024

Relations

• Revises: ISO 22157-1:2004 - Bamboo — Determination of physical and mechanical properties — Part 1: Requirements
• Effective Date: 12-Feb-2014

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 22157
First edition
2019-01
Bamboo structures — Determination
of physical and mechanical properties
of bamboo culms — Test methods
Structures en bambou — Détermination des propriétés physiques et
mécaniques des tiges de bambou — Méthodes d'essais
Reference number
ISO 22157:2019(E)
©
ISO 2019

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ISO 22157:2019(E)

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© ISO 2019
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Published in Switzerland
ii © ISO 2019 – All rights reserved

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ISO 22157:2019(E)

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 General requirements . 4
5.1 Temperature and humidity . 4
5.2 Rate of load application . 4
5.3 Calibration . 4
5.4 Test report . 4
6 Sampling and storage of specimens . 5
6.1 Sampling . 5
6.2 Selection. 6
6.3 Felling, marking and sample preparation . 6
6.4 Despatch . 6
6.5 Receipt and storage of the bamboo culms . 6
6.6 Marking and conversion into test specimens . 6
7 Moisture content . 7
7.1 Moisture content by oven-dry method.
...