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Multi-ply Member Weak Axis Bending Resistance (v9 - Bug 2860)

For y-axis moment design, the section modulus S was mistakenly divided by the number of plies. As this value is used to compute the bending moment resistance Mry using O86 5.5.4.1 and 6.5.6.5.1, so the design resistance was lower than it should be by a factor equalling the number of plies.

This problem occurred for beams, laterally loaded columns and for combined axial and bending design of columns, and has been corrected. .

See Also

Engineering Design

Notch Design

Lateral Stability Factor KL

Vibration Design for Joists

NBC Glulam Fire Design (v9 - Feature 197)

Maximum Lamination Width for Kzbg Factor (v9 - Feature 205)

Glulam Shear Design

Weak Axis Structural Composite Lumber Design (v9 - Feature 140)

Wood Volume Output (v9 - Feature 171)

Bearing Design – Miscellaneous Changes

Absolute Deflection Limit Default (v9 - Feature 167)

Design Check Output Improvements

Case 2 System Factor for Axial Tension (v9 - Bug 2838)

19.2” Spacing (v9 - Change 132)

Design Search for Built-up Beams (v9 - Bug 2742)

I-Joist Deflection (v9 - Bug 2783)

Design for Custom Section Size Same as Nominal Size ( Bug 2842)

Design Search for Unknown Lower End of Section Size Range (v9 - Bug 2843)

Design Values in Output for Custom Multi-ply Members (v9 - Bug 2859)

Deflection Design for Weak Axis, Custom Multi-ply Members (v9 - Bug 2859)

Deflection Design for Weak Axis, Custom Multi-ply Members (v9 - Bug 2859)

NBCC Terminology (v9 - Change 173)

Part 4 of NBC in Program Information (v9 - Change 177)