GB/T 36872-2018Code of glued laminated timber production (English PDF)

National Standard of the People's Republic of China

ICS

79.060.99

Classification

B 70

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

• Foreword
• 1 Scope
• 2 Normative references
• 3 Terms and Definitions
• 4 Requirements
• 4.1 Personnel requirements
• 4.2 Basic conditions
• 4.3 Equipment Condition
• 5 Manufacturing
• 5.1 Sawn timber
• 5.1.1 Tree species
• 5.1.2 Moisture content
• 5.1.3 Layer classification
• 5.1.4 Laminate
• 5.2 Adhesive
• 5.3 Layer configuration
• 5.4 Layer finger joint
• 5.4.1 Finger shape and parameters
• 5.4.2 Gluing
• 5.4.3 Finger joint pressure
• 5.4.4 Curing
• 5.4.5 Splicing and slotting in the width direction of the laminate
• 5.5 Laminate lamination
• 5.5.1 Laminating surface processing
• 5.5.2 Group blank
• 5.5.3 Adjusting glue
• 5.5.4 Glue
• 5.5.5 Assembly time
• 5.5.6 Pressurization
• 5.5.7 Curing
• 5.5.8 Pressurization time and curing time during gluing
• 5.6 Bending Glues
• 5.7 Glulam for special structures
• 5.8 Structural Finishing Finishing
• 5.8.1 Structural Gluing Dimensions Allowable Deviation and Appearance Quality
• 5.8.2 Number of layers
• 5.8.3 Material quality grade and requirements
• 5.9 Requirements for the use of wood inserts
• 5.10 Packaging, Transportation
• 6 Quality Control
• 6.1 General requirements
• 6.2 Inspection Summary
• 6.3 Initial inspection
• 6.3.1 Test method
• 6.3.2 Non-longitudinal laminate bending test
• 6.3.3 Longitudinal laminate bending test
• 6.3.4 Longitudinal laminate tensile test
• 6.3.5 Longitudinal laminate boiling peel test
• 6.3.6 Straight laminated timber bending test
• 6.3.7 Tensile laminated timber tensile and compressive test
• 6.3.8 Glulam layer shear test
• 6.3.9 Glulam stripping test
• 6.3.10 Blown stripping test of laminated timber
• 6.3.11 Structural laminated material decompression and pressure peeling test
• 6.3.12 Glue content test of laminated timber
• 6.3.13 Synthetic material formaldehyde emission test
• 6.4 Full test
• 6.4.1 General
• 6.4.2 Inspection method
• 6.5 Sampling inspection
• 6.5.1 General
• 6.5.2 Inspection method
• 6.6 Production record of structural laminated timber
• Appendix A (Normative) Fingering Technical Requirements
• Appendix B (informative) Correspondence between the strength grades of laminated timbers for some countries and regions
• Appendix C (Normative Appendix) Manufacturing method for laminated structures for special structures
• Appendix D (informative) Example of laminated timber for structural use 1
• Appendix E (informative) Example of structural composite blanks for construction 2