Enter the span, sag (or tension) and load, and Volex Anvil solves the catenary: the horizontal tension H, the maximum tension at the supports, the cable length and the sag profile — for cables under self-weight (true catenary) or a uniform load (parabolic approximation).
The sag-tension relationship follows Timoshenko's 'Theory of Structures', so the horizontal and maximum tensions match the classical closed-form results for cables and tie-backs.
| Quantity | Published | Volex Anvil | Error |
|---|---|---|---|
| Horizontal tension H | 50.0 kN | 50.0 kN | 0.00% |
| Maximum tension Tmax | 53.85 kN | 53.9 kN | 0.09% |
Every result carries its clause references. Free tier, results in seconds.