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The shear capacity was established for each depth separately, as per ASTM D5055-04. Data from quality control (QC) tests have been used to establish the applicable coefficient of variation, CV_w, and the reliability normalization factor from Table 13.2.3.2 of CAN/CSA-O86-01 was used to determine the specified strength. The shear capacity was revised to meet the requirements of ASTM D5055-08 and CAN/CSA-O86-01.

The moment capacity qualification was carried out using the analytical method based on the characteristics of the flange material, and with confirmatory testing done in accordance with ASTM D5055-04. Data from QC tests have been used to establish the applicable coefficient of variation, CV_w, and the reliability normalization factor from Table 13.2.3.2 of CAN/CSA-O86-01 was used to determine the specified strength. Moment capacities for LPI® 18, 20Plus, 32Plus, 42Plus and 52Plus were revised to meet the requirements of ASTM D5055-08a and CAN/CSA-O86-09.

An appropriate test program was used to confirm the stiffness capacity. The following formula was used to predict mid-span deflection:

$\text{deflection}=\frac{5w{L}^4}{384EI}+\frac{w{L}^2}{K}$

where: w = load (kN/m), L = span (mm), EI and K are taken from Table 4.1.1

Flange tension tests were conducted in accordance with ASTM D5055-04, Section 6.3.1.3. The tensile capacity was determined in accordance with ASTM D5055-04, Section 6.3.1.4.

Specimens were tested for creep performance in accordance with ASTM D5055-04. The specimens recovered more than 90% of the basic dead load deflection.

Qualification tests were conducted to qualify minimum bearing lengths. The I-joist design properties on end reaction and intermediate reaction for LPI® 18, 20Plus, 32Plus, 42Plus and 52Plus were analyzed using ASTM D5055-08, whereby design values were based on linear interpolation within the tested bounds of depth and bearing length (4-corner method). Qualification tests for the reaction values were used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from Table 13.2.3.2 of CAN/CSA-O86-01 was used to determine the specified strength. Extrapolation of reaction properties in Table 4.1.1 is not allowed. LPI® 36 and LPI® 56 reaction properties shown in Table 4.1.1 are specific to the bearing lengths shown and are based on a rational bearing analysis methodology. Data submitted confirm satisfactory performance to the rational methodology. Qualification test data for the reaction values were used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from Table 14.2.3.2 of CSA O86-09 was used to determine the specified strength.

The adhesive used complies with CSA O112.7-M1977, "Resorcinol and Phenol-Resorcinol Resin Adhesives for Wood (Room- and Intermediate-Temperature Curing)" (see CCMC 12917-L, 13054-L and 13291-L). An alternate water-based melamine adhesive for flange fingerjoints complies with CSA O112.9-04, "Evaluation of Adhesives for Structural Wood Products (Exterior Exposure)" (see CCMC 13307-L).

The web stock complies with CSA O325.0-92 (R2003), "Construction Sheathing."