ISO 19821:2017
Determination of span rating for natural fibre-reinforced plastic composite (NFC) deck boards
ISO 19821:2017 specifies the procedures to establish a span rating for natural fibre-reinforced plastic composite (NFC) deck boards and deck boards used as stair treads, provided that the stair treads are produced from the same materials and processing techniques as the deck boards. This document covers test methods of performance, acceptance criteria and determination of span rating. It is intended to establish the basis for code recognition of deck boards used in exterior applications where combustible construction is allowed.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test specimen
5 Sampling
6 Conditioning
7 Evaluation methods of performance
7.1 General
7.2 Temperature and moisture effects
7.2.1 Temperature effect
7.2.2 Moisture effect
7.2.3 Acceptance criteria
7.3 Weatherproofing
7.3.1 Test method
7.3.2 Acceptance criteria
7.4 Freeze-thaw resistance
7.4.1 Test method
7.4.2 Acceptance criteria
7.5 Biodeterioration
7.5.1 General
7.5.2 Fungal decay resistance
7.5.3 Termites
7.6 Creep-recovery
7.6.1 Test method
7.6.2 Acceptance criterion
7.7 Creep-rupture
7.7.1 Test method
7.7.2 Acceptance criterion
7.8 Mechanical fastener holding
7.9 Slip resistance
8 Determination of span rating
8.1 Deck board span rating
8.2 Two-span adjustment
9 Report
9.1 Test report
9.2 Product description
9.3 Installation instructions
Annex A (informative) Adjustment factor — Examples
Annex B (normative) Two-span test method
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test specimen
5 Sampling
6 Conditioning
7 Evaluation methods of performance
7.1 General
7.2 Temperature and moisture effects
7.2.1 Temperature effect
7.2.2 Moisture effect
7.2.3 Acceptance criteria
7.3 Weatherproofing
7.3.1 Test method
7.3.2 Acceptance criteria
7.4 Freeze-thaw resistance
7.4.1 Test method
7.4.2 Acceptance criteria
7.5 Biodeterioration
7.5.1 General
7.5.2 Fungal decay resistance
7.5.3 Termites
7.6 Creep-recovery
7.6.1 Test method
7.6.2 Acceptance criterion
7.7 Creep-rupture
7.7.1 Test method
7.7.2 Acceptance criterion
7.8 Mechanical fastener holding
7.9 Slip resistance
8 Determination of span rating
8.1 Deck board span rating
8.2 Two-span adjustment
9 Report
9.1 Test report
9.2 Product description
9.3 Installation instructions
Annex A (informative) Adjustment factor — Examples
Annex B (normative) Two-span test method
Bibliography