Gerber Beam — Three-Span
18 m three-span Gerber beam with two internal hinges and three asymmetric point loads; each hinge imposes a zero-moment condition that yields the five reactions algebraically — teaches multi-hinge Gerber analysis and sign-reversal at interior supports.
Category: beam · Difficulty: Advanced
Solution
| Support | Rx (N) | Ry (N) | Mz (N·m) |
|---|---|---|---|
| A | 0 | 20 | 0 |
| B | 0 | 37 | 0 |
| C | 0 | 49 | 0 |
| D | 0 | 8 | 0 |
All reaction values are computed by the StatIQ structural engine, not generated text. Signs follow the solver's convention: a positive Ry acts upward, a negative Ry downward; a positive M is counter-clockwise.