Trusses – Method of Joints: Member Angles from Coordinates, Joints in a Set Order, Tension, Compression & Zero-Force Members
This lesson is part of the course
In this lesson
You compute member angles from joint coordinates, solve a roof truss joint by joint – A first, then B – and read which members are in tension, in compression or carry no force.
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Lessons in this course
- Force Vectors: Components with COS and SIN, the Resultant & Its Direction with a Quadrant Correction Locked
- Moments & Couples: x·Fy − y·Fx About a Point, a Couple, Moving a Force & the Line of Action Locked
- Particle Equilibrium: a Ring on Two Cables, ΣFx = 0 and ΣFy = 0 as a 2 × 2 System & Cramer's Rule Locked
- Rigid-Body Equilibrium: Free-Body Diagram of an L-Frame, Pin and Inclined Roller, Moments First & Zero Checks Locked
- Trusses – Method of Joints: Member Angles from Coordinates, Joints in a Set Order, Tension, Compression & Zero-Force Members Locked
- Trusses – Method of Sections: One Cut, Two Moment Equations, the Diagonal & the Most Loaded Member of a Footbridge Locked
- Centroids & Second Moments of Area: Composite Shapes with a Hole, SUMPRODUCT & the Parallel-Axis Theorem Locked
- Capstone – Friction, Sliding vs Tipping & Three Load Cases on the Footbridge Against a Fictional Allowable Force Locked