Understanding Beam Reactions

https://www.youtube.com/playlist?list=PLOQ_D0oq27oCPBudQXnRf8G4UNQAOpEcv Dr Jawed Qureshi covers two worked examples on how to find support reactions in beams with point and distributed loads. Imagine you have a simple wooden beam, like the ones you might see in a playground or on a bridge. Beams are used to support weight, like people walking on a bridge or a heavy load on a shelf. When something heavy is placed on a beam, it pushes down on the beam, and the beam has to push back to keep everything in balance. There are two main types of reactions that happen when you put weight on a beam: 1. Support Reaction: Think of this as the beam's way of pushing back against the weight. If you have a beam resting on something, like a shelf on a wall or a plank on a table, the wall or table pushes up on the beam to keep it from falling down. This push from below is called a "support reaction." o For example, if you place a heavy book on a shelf, the shelf pushes upward on the book to keep it from falling to the ground. 2. Load Reaction: This is the force exerted by the weight you put on the beam, pushing the beam down. So, if you have that same heavy book on a shelf, the book is exerting a force downward due to its weight. o Think of it like this: The book is trying to pull the beam down, and the beam's support reaction (the shelf pushing up) is trying to stop it from falling. These reactions are crucial for engineers and architects because they need to make sure that beams and structures can handle the loads placed on them without breaking or collapsing. By understanding these reactions, they can design beams and supports that are strong enough to keep everything stable and safe. In summary, beam reactions are like a balancing act between the weight pushing down on a beam and the support pushing up to keep it in place. Engineers use this knowledge to create structures that can carry heavy loads safely. Link to lecture slides: https://tinyurl.com/JQureshiMechanics 00:00 – Introduction 02:53 – Example 1 08:56 – Example 2 Watch structural mechanics Lecture series at https://tinyurl.com/JQmechanics 01 Understanding Structural Mechanics https://youtu.be/vfXASfDiBLw 02 Understanding Loads and Load Paths https://youtu.be/JdV07TdDDOk 03 Understanding Internal forces in Structural Members https://youtu.be/665WYwg0jwk 04 Understanding Floor Loading in Buildings https://youtu.be/kt7V3DESoOQ 05 Understanding SECTION PROPERTIES https://youtu.be/ZTPqPpt_Wak 06 Understanding the Area Moment of Inertia - Examples https://youtu.be/ZvB_8V65NGM 07 Understanding Moment of Resistance and Stress Distribution in Beams https://youtu.be/3zvQC7Kzk74 08 Understanding Analysis of Beams https://youtu.be/7Iaf_RTftdY 09 Understanding Beam Reactions https://youtu.be/fibm_27ymFc Subscribe to my YouTube structural engineering channel https://www.youtube.com/@drjqureshi Follow Me on Twitter https://twitter.com/DrJQureshi Follow Me on Instagram https://www.instagram.com/drjqureshi/ Follow me on LinkedIn https://bit.ly/Linkedin-JQ Your queries What are beam reactions What are supports? What are fixed, simple and roller supports? Moment of resistance in beams Stress distribution in beams Area moment of inertia Centroid and area of section Moment of inertia Engineer’s equation Understanding and analysing trusses Understanding Shear Force and Bending Moment Diagrams Understanding Stresses in Beams Structural Shapes Ranked and Reviewed - Which one Wins? An Introduction to Stress and Strain Understanding Torsion Understanding Vibration and Resonance What is Engineering Mechanics? Understanding Structural Mechanics Understanding the Area Moment of Inertia Understanding Buckling Understanding the Finite Element Method mechanics of materials lecture advanced structural mechanics structural engineering channel YouTube video series on Engineering Mechanics https://tinyurl.com/JQmechanics Unlock the power of Structural Mechanics in my comprehensive YouTube series tailored for both Civil and Mechanical Engineers. Covering topics from Statics and Structural Analysis to FEA and real-world case studies, this series equips you for success. Explore #StructuralMechanics, #EngineeringDesign, #engineeringmechanics, and more. Disclaimer: This material is provided on an 'as is' basis with no warranty. There is no guarantee that the material will meet your requirements, that the material is error-free, that results obtained from the use of the material will be reliable, nor that any errors in the material will be corrected. Copyright: Dr Jawed Qureshi holds the copyright to this lecture series. He is a senior academic in London, UK with international experience of over 20 years. Dr Qureshi holds a PhD in steel -concrete composite structures from The University of Leeds and has a prior teaching experience at The University of Warwick. He is currently working at a London University as a Senior Lecturer in Structural Engineering and Design.