Effective Length Factor in a Structure

In this video, I explain the effective length factor (K) for columns in steel and RC frames using BNBC 2006 provisions. We discuss how frame behavior (braced vs sway) changes the effective length of a column and why this directly affects buckling capacity and design safety. The session is in Bangla, targeted for civil/structural engineers and students in Bangladesh who still need BNBC 2006 for checking and assessing existing structures. Topics covered: What is effective length and K‑factor. Difference between braced and sway frames. How to choose effective length factors from code philosophy. Practical notes for steel sheds and existing industrial buildings. Effective length factor, column effective length, K factor column, braced frame, sway frame, braced vs sway frame, steel shed design, steel structure design, column buckling, buckling length, unbraced length column, frame stability, frame stability analysis, BNBC 2006, BNBC 2006 steel design, BNBC 2006 effective length, Bangladesh National Building Code, steel design Bangladesh, structural engineering Bangladesh, civil engineering Bangladesh, column design tutorial, steel frame analysis, structural design in Bangla, civil engineering Bangla, engineering lecture Bangla