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The fire safety workspace

Seven stages over the same data. Each stage reads what the ones before it already calculated, and never asks for it again.

  1. Open a project

    One project, one materials inventory, and every tool reads from it.

    A workspace for entering project and material data. Does not calculate.

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  2. Bounded calculation

    MAQ and control areas

    Identifies the maximum allowable quantity in each control area and shows the calculation chain.

    Calculated:
    The allowable quantity is calculated from appendix ג by classification, use column and storey, with a lower and an upper bound for every cell and a full calculation chain.
    Still open:
    Footnotes a and b increase the quantity under protection conditions, but depend on editions of NFPA 400 and NFPA 13 that the procedure does not name. Footnote m contradicts itself between its English and Hebrew texts. On those paths a range is shown rather than a single value.
    What would resolve it:
    A ruling from the authority on the editions of NFPA 13 and NFPA 400 — the procedure cites NFPA 13 in seven footnotes and dates none of them, and a copy of the standard does not settle it. A ruling by the authority between the two texts of footnote m would close that one.
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  3. Fire load

    Calculates fire load from quantity, calorific value and area, with a source for every calorific value.

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  4. Fire risk assessment

    Determines the risk level for the building and for each control area under §4.3.2 of the procedure, and assembles the report for submission.

    Uses results from MAQ and Control Area Check and Fire Load Calculator

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  5. Fire authority requirements

    Search the official Israel Fire and Rescue Authority requirements by licensing or construction context.

    Searches the official requirements register. Does not calculate.

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  6. Inspection readiness

    A readiness questionnaire that produces an action list, without stating legal compliance.

    A readiness questionnaire that produces an action list. Does not calculate and does not determine compliance.

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  7. Bounded calculation

    Permit obligation

    Checks whether a permit is required under the law in force today, and shows the date the filing obligation takes effect under integrated licensing.

    Calculated:
    The permit obligation under the Classification and Exemption Regulations 5756-1996 — classification under regulation 1, the exemption in regulation 2 and the two carve-outs in regulation 3 (50 kg in aggregate, 40 kg of type ב toxics), with a full chain of reasoning. Also: the filing dates under integrated licensing, following the postponement order of 20.07.2026.
    Still open:
    The First Schedule to the regulations is partly loaded (19 of some 300 items), and part א of the Third Schedule is partly loaded (10 of some 50 entries). Part ב is loaded in full as data, but its decision engine is switched off: what an empty cell means against a dash is not settled in law, group O is not named in the aggregation formula, and a substance named individually has no assignment to a risk group.
    What would resolve it:
    Loading the remaining First Schedule items and part א from the official source; and a legal ruling on the three questions in part ב, including publication of the director's instructions under section 13א(b), which have not been located.
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  8. Professional report

    A single report bringing together every project calculation, with its sources, assumptions and open items.

    Assembles a report from the tools' outputs. Does not calculate anything itself.

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Fire dynamics

Established correlations from the fire safety engineering literature, which do not depend on a standard we do not hold. The equation is implemented here; every constant that is a property of a particular material — burning rate, radiant fraction, RTI — is entered by you together with the document it came from, and the tool supplies no value and offers no default.

Why work with Hoshen's tools?

The tools were built out of real consulting work, so they keep what matters in a case file: a source for every figure, an explanation for every calculation, and a clear mark against anything that still needs checking.

One project, every calculation

Enter the building, the control areas and the materials once. Every tool reads from the same project.

Materials are entered once

A material entered for the MAQ check is also available to fire load and to the risk assessment, with its classification and its source.

A source for every result

Every numeric value has a document, an appendix, a table and a page. You can open it and see where it came from.

The full working, shown

Every result opens into "how we got here" — step by step, including what was not applied and why.

Professional uncertainty

Where a condition has not been verified, the system says so rather than guessing. There is no figure without backing.

A report ready to submit

A professional report with sources, assumptions and open items — ready to print or save as PDF.

Everything stays in your browser

Your data is stored in your browser alone and is never sent to Hoshen or to anyone else.

Built for industry and storage

Built around the fire risk assessment procedure for industrial and storage buildings and the official requirements registers.

Some tools are shown as a preview: the interface and the scenario are complete, but values that are a regulatory requirement are withheld until their data source has been verified. You can see exactly what the tool will do, without relying on a figure that has nothing behind it.

Need a professional review?

These tools give a first picture. For a specific review of the building, the materials and the requirements, we would be glad to work with you.