AS NZS 8008:2022 pdf free download – Timber – Finger-jointed structural timber —Performance requirements

AS NZS 8008:2022 pdf free download – Timber – Finger-jointed structural timber —Performance requirements.
This document specifies product, performance requirements and test methods for finger-jointed structural timber, laminated veneer lumber (L.VL) and glued laminated timber elements.
This document does not apply to products made using impressed (die-formed) joints, or linger-jointed laminations br giLled laminated timber, which are covered in AS/NZS 1328.1.
1.2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document.
NOTE Documents referenced for Informative purposes are listed in the Bibliography.
AS 1720.1. Timber struct ures, Part 1: Design methods
AS 2082, Timber — Hardwood — Visually stress-graded for structural purposes
AS 2858, Timber — Softwood — Visually stress-graded for structural purposes
AS 5068. Timber — Finger-joints in structural products — Production requirements
AS/NZS 1328.1, Glued laminated structural timber, Part 1: Performance requirements and minimum production requirements
AS/NZS 1491, Timber — Finger-joints In structural products — Production requirements
AS/NZS 1748.1. Timber — Solid — St ress-g raded for structural purposes, Port 1: General requirements
AS/NZS 40611, Characterization of structural timber, Part 1: Test methods
AS/NZS 4063.2, CharacterizatIon of structural timber, Port 2: Determination of characteristic values
AS/NZS 4357.0, Structural laminated veneer lumber, Port 0: Specifications
AS/NZS 4364, Timber — Bond performance of structural adhesives
AS/NZS 4490, Timber — Solid — St ress-gruded for structural purposes — Verification of properties
NZS 3603, Timber structures standard
NZS 3631, New Zealand timber .grading rules
1.3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
1.3.1
finger-joint
end joint formed by machining a number of similar, tapered, symmetrical fingers In the ends of timber pieces that are then bonded together
4.3.2 Testing
Finger-joints shall be tested In accordance with either Appendix D or Appendix E.
When tested in accordance with AppendixD. all linger-joints shall he subject to the sanse pre-treatment.
NOTE Appendix 0 should be selected if the product is manufactured from LVL or has lingers less than 12 mm.
4.3.3 Acceptance criteria
Finger-joints tested in accordance with ApjentjixJ shall meet the acceptance criteria in Appendix D.
Finger-joints tested in accordance with Appendix E shall meet the acceptance criteria in Appendix E.
4.4 Manufacturing process
Where the verification of finger-point strength is conducted using the analytical method in accordance with Clause 5.1.2 or empirical method In accordance with Clause 5L3. the manufacturing process shall be qualified in accordance with Appendix C.
NOTE I The manulailuring process is Irsted to stabIih wnlldencv th.it the manii(aturing pcciliatiun .ind quality control procedures will detect and respond to low strength linger-joints. This is not required where proof loading is used to determine finger-joint strength.
NOTE 2 Test data considered maybe from routine testing performed on flat or edge provided the finger-joint Is in the region of maximum bending moment in three-point bending or four-point bending.
4.5 Changes affecting qualification
Where finger-joint reliability is determined using the analytical method in accordance with Clause5,1.2 or using the empirical method In accordance with Clause 5.1.3. any evidence of rogue finger-joints In the final population (e.g. from internal testing or customer complaints) shall result in an investigation to determine the cause of the failure.
Once the cause of failure has been determined, corrective action shall be taken, including a review of the effectiveness of the testing process in detecting rogues and whether the test data conforms to the requirements of this document for current production.
NOTE Where significant changes to the manufacturing process are made In response to the review, reevaluation In accordance with AppG should be undertaken.