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# Chapter1 - BCEE 343 Structural Analysis II These are brief...

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© K. H. Ha - BCEE 343 Chapter 1 - v2.22 1.1 BCEE 343 - Structural Analysis II These are brief notes summarizing the essential concepts of structural analysis. They are not intended to substitute class material. Course objective To develop working knowledge of structural analysis so that you understand the behaviours of structures and the concepts that govern the magnitude of stresses and deformations in construction material: (a) Equilibrium and stability of bodies; (b) Deformations of materials due to stresses and environmental factors; (c) Compatibility of deformations. You would try to acquire a good understanding of the above aspects and their impact on stresses and deformations of bodies as well as proper terminology so that you can: Apply the above concepts to any situation dealing with material under stresses, be it a dam, a bridge, a building, a window or a piping system. See danger of collapse at construction and fabrication sites. Carry on intelligent discussions and cooperate with other professionals. Use computer for analysis of simple structural systems. The smart way: study more efficiently, not harder For a given amount of time and effort for studying, you can maximize the benefits by taking these steps: Before the lecture: Quickly review the material of the last class, and then study the notes further in advance: This helps sharpen your objectives and provide better anticipation and concentration during the lecture, leading to a thorough comprehension of the lecture material. Home study: Do the exercise problems and review the notes and sample solutions as needed. The objective of doing the exercise problems is to confirm and test your understanding of concepts, principles and procedure. This will prepare you for

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© K. H. Ha - BCEE 343 Chapter 1 - v2.22 1.2 solving a large variety of problems including the new ones that you will see in the exams. Save time by using computer for most if not all numerical computation. This allows you time to experiment, try more problems, thus mastering all aspects of structural modeling, formulation and application of concepts 1 . During your study of a concept, a step, a formula, or a problem, focus your thinking 2 on: (a) Its purpose/significance. (b) Its source/basis and its consequences/conclusions. (c) Its applications/restrictions. (d) Its similarity/differences from the others. To avoid confusion, make sure you know and use correct symbols and terminology. Precision in thought can only comes with precision in words. Idealized structural systems For the purpose of analysis, real three-dimensional systems can often be separated into several one- or two-dimensional sub- systems. An idealized system or sub-system contains members and connections whose idealized behaviors are well defined. Members are represented by their centroidal axes with mathematically endowed cross-sectional areas and moments of inertia.
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