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Table 2.1 Adhesives Used in the Manufacturing of the Product
Adhesive Joint Type Compliance
Manufacturer Number Type
Momentive LT5210/FM6210 PRF Face Bond CCMC 13051-L
Momentive 4001/H1003 PRF Face Bond CCMC 13522-L
Momentive Prefere 4720/5025A MF Face Bond/End-Joint CCMC 13252-L
Momentive RS254D/FM-316M RF End-Joint CCMC 13057-L
Akzo Nobel 1263/9563 Melamine Face Bond CCMC 13536-L

Note:

PRF: phenol-resorcinol-formaldehyde MF: melamine-formaldehyde RF: resorcinol-formaldehyde

Table 2.2 Minimum Layup Requirements for the Product for Stress Grade 20f-E Bending (MPa)
Zone Visual Grade Minimum E Value (MPa)
Outer 1/8 or more – compression C 11 000
Remainder of outer 1/4 compression D 9 700
Inner 1/2 or less D No minimum
Remainder of outer 1/4 tension C 9 700
Outer 1/8 or more – tension B 11 000
Face lamination (over 608 mm in depth) B-F 11 000

4.1 Design Requirements

Table 4.1.1 Specified Strengths (MPa) for the Product
Bending Stress Grade 20f-E 20f-EX
Bending at extreme fibre due to positive bending moment (F b) Footnote (1) 25.6 25.6
Bending at extreme fibre due to negative bending moment (F b) Footnote (1) 19.2 25.6
Longitudinal shear (F v) 1.75 1.75
Compression perpendicular to grain (F cp) – compression face 5.8 5.8
Compression perpendicular to grain (F cp) – tension face 5.8 5.8
Modulus of Elasticity 10 300 10 300

Appendix A – Additional Information

The design values obtained from tests following the principles of CSA O122 and CSA O86 design values.

Table A1. Additional Test Information for the Product
Property Test Information
Positive moment capacity Testing indicated that the stiffness and specified strength in bending for the product compares directly with the specified strengths for lodgepole pine and/or spruce glued-laminated timber in CAN/CSA-O86-14, Table 7.3. General design provisions for the calculation of moment capacity, as set forth in CAN/CSA-O86-14, are applicable.
Negative moment capacity To determine the design value for bending due to negative moment, a total of 408 lumber pieces and 120 fingerjointed samples of spruce/lodgepole lumber were tested. The lower 95% tension strength, in MPa, was determined for Band "C" grades (graded to CAN/CSA-O122-M89) in various sizes. The ratio of ultimate tension strength (UTS) for CAN/CSA-O122-M89 grade "C" to grade "B" was determined for two widths of lumber and for one width of fingerjointed lumber. This ratio ranged from 0.79 to 0.85. The specified strength due to negative moment was determined for Westlam-E beams by applying the UTS ratio to the known value of specified strength in bending due to positive moment. The specified strength in bending due to negative moment calculated in this way is 19.2 MPa.
Adhesives Exterior type phenol-resorcinol and melamine adhesives are qualified by APA for use in end-joints and face bonds in the product. All adhesives qualified have a CCMC evaluation and demonstrated compliance with the applicable standard. The adhesives used are listed in Table 2.1 of this Report.
Manufacturing quality assurance The manufacturing quality assurance program follows the principles of CAN/CSA-O177 and is verified by APA- EWS as part of the plant certification. As per CAN/CSA-O177, when the adhesive used complies with CAN/CSA-O112.9, additional fire performance testing is required for decision making by the authority having jurisdiction (AHJ).