Tributary Area Basics | Gravity Load Path | Linear Loads on Beams and Girders скачать в хорошем качестве

Tributary Area Basics | Gravity Load Path | Linear Loads on Beams and Girders

In this video, we’ll walk through a classic structural engineering problem: how to convert area loads on a slab (psf or kN/m²) into linear distributed loads on beams and girders (plf or kN/m). We’ll review the load path (slab → beams → girders → columns → Footings), explain tributary widths, and work through two cases: Case 1: Beams only (one-way slab action) Case 2: Beams + girders (two-way slab action with trapezoidal and triangular load distribution) For a typical interior girder, just like an interior beam, the tributary width is measured from the midpoint between girders on one side to the midpoint between girders on the other side. An interior girder carries both a distributed load from its own tributary area and point loads from the reactions of beams framing into it. Since each beam support delivers a reaction, the interior girder receives reactions from both sides. In this video, however, G1 and G2 are exterior girders, so they only receive beam reactions on one side... Check the 3D view in the video. If you shift the girder inward, you’ll see how it becomes an interior girder and starts picking up reactions from both sides... This is a simple but practical calculation that structural engineers deal with all the time in real projects. Perfect for students, EITs, or anyone refreshing their structural design basics.