Please note that this lesson has two parts. As such, there will be only one assessment and assignment which can be found at the end of the WDM Glulam Column: An Example video.
Introduction
This lesson covers design settings and lateral stability in built up beams, focusing on the Kl factor for sawn lumber and SCL per CSA. Lateral stability calculations are auto-reported, with fastening methods ensuring unit behavior for lateral torsional buckling. The unsupported length option allows calculation based on lateral support points or 0 moment points. An example of a two-span beam illustrates how the unsupported length affects bending. Finally, modifying support conditions impacts moment resistance, as demonstrated by a built-up beam resisting twice the moment force when laterally supported.
Learning Outcomes
By the end of this lesson, you will be able to:
- Analyze the impact of different Kl calculation methods in Sizer, including prescriptive assumptions and CSA-based equations, on beam stability.
- Evaluate the effect of fastening methods in built-up beams on moment resistance and structural performance.
- Demonstrate how unsupported length (Lu) calculations influence lateral stability and compare the implications of using lateral support points versus points of zero moment.
- Assess the role of interior support conditions in lateral stability and their effect on a beam’s moment resistance and failure risk.
Instructional Video
Video Run Time: 10:01 minutes
