What is the Bomb Standoff Planner multi-solver?

Bomb Standoff Planner is a guided workflow that chains 1 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.

Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.

Earth & First Responders Pack · Multi-Solver

Bomb Standoff Planner

Overpressure & cordon. This multi-solver chains 1 solvers into a single guided workflow — run each step in order and carry the result forward.

Workflow steps

blast-standoff

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Blast Standoff

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Blast Standoff / OverpressureLive

cube-root scaling

At 30 m from 10 kg

7.8 kPa

Window breakage

Controls

Presets

Charge (kg TNT eq.)

Distance (m)

83 kPa — Severe structural / lethal

35 kPa — Serious injury, wall collapse

14 kPa — Eardrum rupture risk

3.5 kPa — Window breakage

Peak incident overpressure follows Hopkinson-Cranz cube-root scaling: the scaled distance Z = R/W^(1/3) sets the blast pressure. Rings show injury and damage thresholds. Screening estimate for standoff planning only — consult EOD and published safe-distance tables on scene.

▶ Run in Python

Data Inspector

Overpressure7.8 kPa

In psi1.13

Window-safe standoff65 m

Governing equation

Z = \frac{R}{W ^{1/3}} = \frac{30}{1 0 ^{1/3}} = 13.92 m/k g^{1/3} \Rightarrow P_{so} \approx 7.8 kPa

Reading this result: At 30 m from 10 kg the scaled distance is Z ≈ 13.9 m/kg^1/3, giving about 8 kPa (window breakage) — since Z = R/W^(1/3), the same pressure ring scales with the cube root of charge, so 8× the explosive only doubles every safe radius.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

What is the Bomb Standoff Planner multi-solver?: Bomb Standoff Planner is a guided workflow that chains 1 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.
Is it free to use?: Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.