Building Structural Design - Section Properties of Built-up Steel Sections
Chapter 2: Structural Steel Beams, Part 3
This document calculates the moment of inertia and section modulus for a steel section that has at least one axis of symmetry built-up from plates or from a combination of plates and sections with known section properties. Any number of plates or sections may be used.Built-up sections are used when reinforcing existing members, as plate girders, and for composite steel beams using bottom plates. The application may also be used to calculate section properties for nonstandard T sections cut from I-shaped members.