Shear Stress Part B | I & T Sections, the Jump & Shear Centre

Why does the shear stress in an I-section JUMP twenty times at the flange–web junction? Why must you find the centroid of a T-section first? And why does a channel TWIST when you load it through its web? Part B walks down an I-section level by level with real numbers, then a T-section, then follows the shear flow round a channel to its shear centre — step by step, with every symbol explained each time it appears: τ the shear stress, F the shear force, A the area above the level, ȳ its centroid distance from the neutral axis, I the moment of inertia, b the width at the level, q the shear flow, e the shear-centre distance. τ = F · A · ȳ / (I · b) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FREE STUDY MATERIAL ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📘 Study Notes PDF — 14 pages, notation table, 6 figures, 7 worked examples, 12 broad questions, self-test 📝 MCQ Practice Paper — 25 questions in 3 sections, with an Answer Key & Explanations page at the back Both free on Telegram → https://t.me/learncivileasy ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SYLLABUS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Diploma (WBSCTE) — Mechanics of Structures, Sem 3, Unit 3.3 "Shear stresses in beams" and 3.4 "Relation between max. and average shear stress" • B.Tech (MAKAUT) — CE(ES)402 Introduction to Solid Mechanics, Module 2 "Symmetric Beam Bending … shear stress for regular sections, shear centre" • Also for SSC-JE, GATE CE, ESE and PSU ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WATCH NEXT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▶ Part A — why τ = F·Aȳ/(I·b), the derivation, rectangle, circle, triangle & diamond:    • Shear Stress in Beams Part A | Why τ = FAȳ...   ▶ Theory of Simple Bending & the Flexure Formula:    • Theory of Simple Bending and the Flexure F...   🔔 Subscribe →    / @learncivileasy   💬 Telegram → https://t.me/learncivileasy #ShearCentre #ShearStress #LearnCivilEasy