AS/NZS 1080.1:2012
Timber - Methods of test - Method 1: Moisture content
Sets out the oven-dry method for determining the moisture content of timber as the only accurate method of truly assigning, with confidence, a moisture content to a piece of timber.
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AS/NZS 1080.1:2012 TIMBER-METHODS OF TEST - MOISTURE CONTENT
PREFACE
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
3.1 Moisture content (MC)
3.2 Test piece
3.3 Test sample
3.4 Test specimen
3.5 Meter, capacitance
3.6 Meter, electrical resistance
4 DETERMINATION OF MOISTURE CONTENT-OVEN-DRY METHOD
4.1 Application
4.2 Apparatus
4.2.1 Scales
4.2.2 Drying oven
4.3 Preparation of test pieces
4.3.1 Sampling
4.3.2 Determination of cutting patterns and recording of information
4.3.3 Test pieces for determining moisture content
4.3.4 Test pieces for determining moisture distribution
4.4 Procedure
4.4.1 Sample preparation
4.4.2 Determination of mass
4.4.3 Oven-drying
4.5 Calculation
4.6 Use of oven-dry method to calibrate resistance and capacitance meters
4.6.1 General
4.6.2 Sampling
4.7 Test report
5 ESTIMATION OF MOISTURE CONTENT-ELECTRICAL RESISTANCE METER
5.1 Procedure for using resistance moisture meters
5.2 Calibration for species and timber preservative treatments
5.3 Test report
6 ESTIMATION OF MOISTURE CONTENT-CAPACITANCE METER
6.1 Procedure for using hand-held capacitance moisture meters
6.2 Procedure for using in-line capacitance moisture meters
6.3 Calibration for species and timber preservative treatments
6.4 Test report
APPENDIX A - SAMPLING OF TIMBER LOTS
A1 SCOPE
A2 SAMPLING
APPENDIX B - ELECTRICAL RESISTANCE METER METHOD
B1 APPLICATION
B2 PRINCIPLE
B3 TYPES OF HAND-HELD RESISTANCE METERS
B4 GENERAL
B4.1 Moisture distribution determination
B4.2 Effect of wood preservatives and adhesives
B4.3 Calibration by comparison with oven-dry method
B4.4 Accuracy
B4.5 Correction for timber species
B5 PRECAUTIONS AND LIMITATIONS WITH RESISTANCE METERS
APPENDIX C - CAPACITANCE METER METHOD
C1 APPLICATION
C2 PRINCIPLE
C3 TYPES OF HAND-HELD CAPACITANCE MOISTURE METERS
C4 GENERAL
C4.1 Accuracy of capacitance moisture meters
C4.2 Calibration by comparison with oven-dry method
C4.3 Correction for temperature
C4.4 Correction for density and thickness
C5 PRECAUTIONS AND LIMITATIONS WITH HAND-HELD CAPACITANCE MOISTURE METERS
C6 REPORTING
APPENDIX D - ELECTRIC RESISTANCE MOISTURE METER- TEMPERATURE CORRECTION TABLE FOR SOLID TIMBER
APPENDIX E - MOISTURE CONTENT CORRECTION FOR ELECTRICAL RESISTANCE MOISTURE METERS
APPENDIX F - CIRCUIT TESTING AND CALIBRATION OF RESISTANCE ELECTRICAL MOISTURE METERS
APPENDIX G - BIBLIOGRAPHY OF SOURCES FOR MOISTURE CONTENT CORRECTIONS
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AS/NZS 1080.1:2012 TIMBER-METHODS OF TEST - MOISTURE CONTENT
PREFACE
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
3.1 Moisture content (MC)
3.2 Test piece
3.3 Test sample
3.4 Test specimen
3.5 Meter, capacitance
3.6 Meter, electrical resistance
4 DETERMINATION OF MOISTURE CONTENT-OVEN-DRY METHOD
4.1 Application
4.2 Apparatus
4.2.1 Scales
4.2.2 Drying oven
4.3 Preparation of test pieces
4.3.1 Sampling
4.3.2 Determination of cutting patterns and recording of information
4.3.3 Test pieces for determining moisture content
4.3.4 Test pieces for determining moisture distribution
4.4 Procedure
4.4.1 Sample preparation
4.4.2 Determination of mass
4.4.3 Oven-drying
4.5 Calculation
4.6 Use of oven-dry method to calibrate resistance and capacitance meters
4.6.1 General
4.6.2 Sampling
4.7 Test report
5 ESTIMATION OF MOISTURE CONTENT-ELECTRICAL RESISTANCE METER
5.1 Procedure for using resistance moisture meters
5.2 Calibration for species and timber preservative treatments
5.3 Test report
6 ESTIMATION OF MOISTURE CONTENT-CAPACITANCE METER
6.1 Procedure for using hand-held capacitance moisture meters
6.2 Procedure for using in-line capacitance moisture meters
6.3 Calibration for species and timber preservative treatments
6.4 Test report
APPENDIX A - SAMPLING OF TIMBER LOTS
A1 SCOPE
A2 SAMPLING
APPENDIX B - ELECTRICAL RESISTANCE METER METHOD
B1 APPLICATION
B2 PRINCIPLE
B3 TYPES OF HAND-HELD RESISTANCE METERS
B4 GENERAL
B4.1 Moisture distribution determination
B4.2 Effect of wood preservatives and adhesives
B4.3 Calibration by comparison with oven-dry method
B4.4 Accuracy
B4.5 Correction for timber species
B5 PRECAUTIONS AND LIMITATIONS WITH RESISTANCE METERS
APPENDIX C - CAPACITANCE METER METHOD
C1 APPLICATION
C2 PRINCIPLE
C3 TYPES OF HAND-HELD CAPACITANCE MOISTURE METERS
C4 GENERAL
C4.1 Accuracy of capacitance moisture meters
C4.2 Calibration by comparison with oven-dry method
C4.3 Correction for temperature
C4.4 Correction for density and thickness
C5 PRECAUTIONS AND LIMITATIONS WITH HAND-HELD CAPACITANCE MOISTURE METERS
C6 REPORTING
APPENDIX D - ELECTRIC RESISTANCE MOISTURE METER- TEMPERATURE CORRECTION TABLE FOR SOLID TIMBER
APPENDIX E - MOISTURE CONTENT CORRECTION FOR ELECTRICAL RESISTANCE MOISTURE METERS
APPENDIX F - CIRCUIT TESTING AND CALIBRATION OF RESISTANCE ELECTRICAL MOISTURE METERS
APPENDIX G - BIBLIOGRAPHY OF SOURCES FOR MOISTURE CONTENT CORRECTIONS
Previous versions
AS/NZS 1080.1:2012
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.