Subject: Design and Drawing of Steel Structure

Topic: Plate Girder

Difficulty: Medium

A welded plate girder 20 m in span and laterally supported throughout is simply supported at the ends. It has to support a udl of 100 KN/m (factored) including self-weight. Design the central section of the plate girder without intermediate vertical stiffeners. Also design curtailment of flange plates, end bearing stiffener and connection between flange and web using fillet welds.

Given,

L = 20m, wd = 100 kN/m (factored including self weight)

To know: Design of welded plate girder

1) Load calculation

Total factored load on girder = 100 kN/m

Maximum bending moment = $\frac{100 \times 20^2}{8}$ = 5000 kN.m

Maximum shear force = $ \frac{100 \times 20}{2} $ = …