Building on our foundational video about composite beams, this tutorial delves deeper into the structural nuances of composite beams made from steel rolled sections and concrete slabs.
- A comprehensive guide on finding the neutral axis in composite beams.
- Step-by-step methodology for calculating stresses in steel and concrete components.
- Techniques to determine the flexural strength of composite sections.
- Detailed analysis of a W16x36 A992 steel section coupled with an 87-inch wide, 5-inch thick concrete slab.
- Explore how to compute the maximum stresses resulting from a 160 ft-kips positive bending moment.
- Insight into calculating the Elastic modulus of concrete and the importance of the steel-to-concrete modulus ratio.
- Approaches to approximate the modulus of elasticity of concrete and its implications.
- Detailed process to locate the neutral axis using the principle of moments, including a thorough explanation of related equations and tables.
- Examination of the moment of inertia and its calculation for composite beams.
- Analysis of stress distribution in the steel and concrete under positive bending moments.
- Discussion on the implications of tensile and compressive forces within the beam.
- Techniques to refine the location of the neutral axis and its effect on stress calculations.
- Exploration of the maximum bending moment a composite section can handle, including discussions on nominal flexural strength, plastic limit state, and stress distribution scenarios.
- An in-depth look at lateral-torsional buckling and its prevention in composite beams.
- Case studies to understand the role of shear forces and stud anchors in defining the neutral axis and composite behavior.
- Practical example of calculating the design flexural strength for LRFD design.
- Guidance on determining the effective slab width as part of the composite section, referencing AISC requirements.
Whether you're an engineering student or a professional, this video is a valuable resource for mastering complex structural concepts in composite beam design.
🕒 Timelines:
00:00 - Previous Video Recap
00:53 - Calculating stresses given an applied moment
05:22 - Computing the Flexural Strength
09:31 - Calculating the effective concrete slab width
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