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Table A1 Additional Test Information for "Microllam® LVL"

Property

Test Information

Bending

Specimens were tested in edgewise and flatwise bending to establish the characteristic value. Data from quality control (QC) tests were used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength.

Shear

Specimens were tested in shear to establish the characteristic value. Data from quality control (QC) tests were used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength.

Compression parallel to grain

Specimens were tested in compression parallel to grain to establish the characteristic value. Data from quality control (QC) tests were used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength.

Compression perpendicular to grain

Specimens were tested in compression perpendicular to grain to establish the characteristic value. The characteristic value was multiplied by 1.09 to establish the specified strength in accordance with CSA O86.

Tension parallel to grain

Specimens were tested in tension to establish the characteristic value. Data from quality control (QC) tests were used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength.

Nail withdrawal

Nail withdrawal values were established following ASTM D 1761, "Methods for Mechanical Fasteners in Wood," for an 8d common nail having a 31.75-mm penetration. Specimens were tested and equivalent species capacity was determined in accordance with ASTM D 5456, A2.4.

Nail bearing

Dowel bearing strength was determined as per ASTM D 5764, "Method for Evaluating Dowel Bearing Strength of Wood and Wood-Based Products," using 10d common nails with a nominal diameter of 3.76 mm and a lead hole diameter of 2.77 mm. Specimens were tested and the mean bearing capacity was used to establish the equivalent species capacity as per ASTM D 5456, A2.5.

Bolt bearing

Bolt bearing capacity as per ASTM D 5764 using 12.5-mm- and 19.0-mm-diameter bolts was determined.

Creep and recovery

Creep testing was conducted in accordance with CCMC’s creep and recovery test. After conditioning of the specimens, the creep and recovery performance was considered favourable. Long-term creep testing was also conducted, which demonstrated equivalency to duration of load behaviour of lumber.

Adhesive

The adhesive complies with CSA O112.6 and O112.9. The adhesive heat durability meets the requirement of ASTM D5456-13a.

Durability

Specimens were tested for adhesive durability, product durability, and connection durability (edge nailing durability), in accordance with ASTM D 5456-07 (as part of the work in ASTM D07.02.03 Task Group).