AS 1720.4-1990

1 - AS 1720.4-1990 TIMBER STRUCTURES - FIRE-RESISTANCE OF STRUCTURAL TIMBER MEMBERS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 REFERENCED AND RELATED DOCUMENTS.
6 - 1.2.1 Referenced documents.
6 - 1.2.2 Related documents.
6 - 1.3 DEFINITIONS.
6 - 1.3.1 Standard fire
6 - 1.3.2 Structural timber member
6 - 1.3.3 Fire-resistance
6 - 1.3.4 Fire-resistance period, (FRP)
6 - 1.3.5 Fire-resistance level, (FRL)
6 - 1.3.6 Notional charring rate (for design purposes)
6 - 1.3.7 Effective depth of charring
6 - 1.3.8 Effective residual section
6 - 1.3.9 Fire-resistant protective insulation
6 - 1.4 MATERIALS.
6 - 1.4.1 Untreated timber.
6 - 1.4.2 Glued-laminated timber.
7 - SECTION 2. DESIGN METHOD
7 - 2.1 GENERAL.
7 - 2.2 CHECK OF FIRE-RESISTANCE LEVEL.
7 - 2.3 DETERMINATION OF FIRE-RESISTANCE PERIOD.
7 - 2.4 NOTIONAL CHARRING RATE.
7 - 2.5 EFFECTIVE DEPTH OF CHARRING.
7 - 2.6 EFFECTIVE RESIDUAL SECTION.
7 - 2.7 BARRIER JUNCTIONS.
7 - 2.8 DESIGN LOAD.
8 - 2.9 PROTECTED TIMBER.
10 - SECTION 3. ASSESSMENT OF JOINTS WITH METAL CONNECTORS
10 - 3.1 UNPROTECTED CONNECTORS.
10 - 3.2 PROTECTED CONNECTORS.
10 - 3.2.1 General.
10 - 3.2.2 Embedding.
10 - 3.2.3 Cladding.

Provides a computational method for determining the fire-resistance of solid and glued-laminated structural timber members as an alternative to furnace testing. Information is also provided on methods of protecting timber and metal connectors from the effects of fire.

This Standard provides a computational method for determining the fire-resistance of solid and glued-laminated structural timber members as an alternative to testing in accordance with AS 1530.4.This Standard also provides guidance on methods for protecting metal connectors from the effects of fire.NOTES:1. This Standard is not relevant to the determination of the early fire hazard properties of materials for which a method of assessment is given in AS 1530.3.2. This Standard is not relevant to structural accreditation through furnace testing for which the appropriate Standard is AS 1530.4.