FAQ

Can I use RiggingSense to plan a real rig?

No. It is a trainer for understanding rigging statics. It models two supports, two-leg bridles, level anchors and static loads, with example hardware values. Its numbers are for learning — not a load rating, a rig check or a sign-off. Real rigs are planned by a competent rigger or a structural engineer against manufacturer data and the rules where you work. The disclaimer is on every screen and every printout for that reason.

Which rules does it name?

In Germany: DGUV Vorschrift 17/18, DGUV Information 215-313, IGVW SQ P2 (electric chain hoists) and DIN EN 17206, with a befähigte Person (competent person) inspecting the rig. Elsewhere, the rules where you work apply. RiggingSense does not reproduce or apply any of them; where a term names a regulation, look up the version in force where you are.

Is it free?

Yes, entirely, with a free Squaresmile account. The sandbox and the bridle views need a tablet or a computer; the training quiz also works on a phone.

Why does it show kilograms instead of kilonewtons?

Because the trade talks in kilograms. Strictly, kg is mass and "force in kg" means kilogram-force; engineering documents use kN (1 kN ≈ 102 kg) or daN. Switch the Unit selector to kN or lb any time; the ⓘ button and the glossary explain the difference.

At 30° from horizontal, what does each bridle leg carry?

The whole load. T = W ÷ (2 sin α), with α from horizontal: 0.50 W at 90°, 0.71 W at 45°, 1.00 W at 30° and already 1.93 W at 15°. That is why common practice never goes below 30° from horizontal — β = 60° if your table counts from vertical. See Bridles.

What is uplift?

A support reaction that goes negative — the structure wants to lift off that support. A chain hoist cannot push, so uplift means a slack chain and an unstable truss. In Truss & hoists the sandbox shows it the moment a load travels past the last hoist; in Overhang it shows the same thing for a beam on the ground.

Does it handle three-point rigs or grids?

No. The model is two supports or two hoists, and two-leg bridles. Three or more hoists on one truss are statically indeterminate — load-cell territory — and outside what the tool teaches.

Are the hardware presets real product data?

No. They are illustrative values that teach the MBS → safety factor → WLL relationship. Use the manufacturer's data sheet for anything real.

Can I share a scenario?

Yes. Copy link encodes the whole scenario in the URL. A colleague opens your exact scenario, even if they need to sign in first. See Training and safety factors.

Does my progress sync?

Yes, once you have confirmed your email. Saved scenarios, quiz level, streaks and settings sync with your account across devices. See Account sync.

Which languages does it speak?

All eleven platform languages, including the glossary, concept cards and quiz explanations. Formula symbols (R_A, W, α) stay as notation. These help pages are in English and German.