ANSI 405:2018 pdf download.Standard for Adhesives for Use in Structural Glued Laminated Timber.
ANSI 405 provides minimum requirements to evaluate adhesives for use in structural glued laminated timber. Adequacy of the adhesive is established by meeting or exceeding the criteria outlined in Section 3. Alternative tests shall not be permitted to substitute for the tests prescribed in ANSI 405.
Although the test methods specified in this Standard are primarily intended for evaluation of face bond adhesive, the minimum test requirements noted shall be used for evaluation of end joint adhesives by adapting the required face bond specimens to conform to required end joint adhesive curing conditions.
Adhesives approved for use in structural glued laminated timber under AITC 405-92 or ANSI/AITC A 190J- 2002 prior to the release of this Standard are beyond its scope. it is the responsibility of the accredited inspection agencies, as defined in ANSI A 190.1-2017, to establish policies regarding the continued use of adhesives previously approved for use under those standards.
1.1 Minor Changes in Formulation
Previously approved adhesives with minor changes in formulation shall meet the requirements of ASTM D2559 and shall pass the in-plant qualification. The remaining requirements of this Standard shall he permitted to he waived lithe following documentation is signed by an authorized agent and provided to the laminator’s accredited inspection agency by the adhesive manufacturer:
(1) Request for approval of the modified adhesive
(2) Description of reason for the changes in formulation
(3) Statement that changes to the adhesive are minor and will not change the performance as measured by the screening tests in this Standard.
1.2 Validating Test Results
All testing shall be performed or witnessed by a laboratory accredited as a competent testing laboratory in accordance with ISO/IEC 17025 general requirements. Test results shall he submitted by the adhesive manulacturer to the accredited inspection agency.
1.3 Mixing and CLiring Conditions
The mixing and curing conditions for samples made with the proposed adhesive shall be representative of the conditions recommended by the adhesive manufacturer for in-plant use. Where a variety of conditions will he recommended, the adhesive manufacturer shall provide evidence, in the form of test data or rational analysis, to attest that the adhesive will perform acceptably under all recommended mixing and curing conditions.
2. REQUIRED TESTS
The screening tests described herein shall he performed and the results submitted to the accredited inspection agency for approval prior to the in-plant qualification.
2.1 Screening Tests
For the purposes of the screening tests under Sections 2.1.1, 2.1.2, and 2.1.5, species within the groupings defined in ANSI A 190.1 need not he approved separately. Treated lumber shall he considered separately under Sections 2.1.1, 2.1.2, and 2.1.5. For the screening tests under Sections 2.1.3, 2.1.4 and 2.1.6, either Douglas fir4.arch or Southern Pine shall be used. The wood used to make all test specimens shall be as required by ASTM D2559 or as required in the specific test standard.ANSI 405 pdf download.