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structuralwith-tool

Structural Fire Tenability Package

Calculates source-bound structural fire and tenability metrics from a deterministic SSC-19 task-owned source pack. The template combines fire growth HRR, fire energy, steel critical temperature, smoke visibility, egress width, alarm NAC current margin, and an overall synthetic pass score.

with-tool: The model is given an executable Python calculator script.

Standards

fire alarm load workflowsstructural fire engineering workflowstenability review workflows

Tags

alarmdeterministicegressfiresteelstructuraltenability

How this task is generated

One template produces many comparable benchmark tasks while keeping the scoring contract fixed.

  1. 01

    Template

    The reusable contract shown on this page.

  2. 02

    Scenario

    An archetype and site context are sampled.

  3. 03

    Difficulty tier

    Inputs may be hidden at harder tiers.

  4. 04

    Task prompt

    The model responds with the declared outputs.

Parameters

Inputs the model receives, and the outputs it is scored on.

Inputs

14 inputs

Always given

Included directly in every task prompt.

14
Show 14 inputs

  • Fire growth alpha

    fire_growth_alpha_kw_s2

    HRR-19-DESIGN-03 fire growth alpha

    0.0469 kW/s2

  • Time to check

    time_to_check_s

    HRR-19-DESIGN-03 time for design HRR check

    240 s

  • Max hrr

    max_hrr_kw

    HRR-19-DESIGN-03 maximum capped HRR

    2800 kW

  • Fire duration

    fire_duration_min

    FIRE-19-STRAT-03 fire duration for energy check

    20 min

  • Structural load ratio

    structural_load_ratio

    STEEL-19-MEMBER-03 structural load ratio

    0.55

  • Steel temperature c

    steel_temperature_c

    STEEL-19-MEMBER-03 calculated steel temperature

    420 degC

  • Visibility constant

    visibility_constant

    TEN-19-CRIT-03 visibility constant

    8

  • Smoke extinction coefficient m1

    smoke_extinction_coefficient_m1

    TEN-19-CRIT-03 smoke extinction coefficient

    0.25 1/m

  • Required visibility

    required_visibility_m

    TEN-19-CRIT-03 required visibility

    10 m

  • Available egress width

    available_egress_width_m

    EGRESS-19-ALARM-03 available egress width

    8.4 m

  • Occupant load

    occupant_load

    EGRESS-19-ALARM-03 occupant load

    320

  • Egress width factor m per 10 persons

    egress_width_factor_m_per_10_persons

    EGRESS-19-ALARM-03 egress width factor

    0.2 m/10 persons

  • Nac current

    nac_current_a

    EGRESS-19-ALARM-03 NAC current

    6.5 A

  • Nac capacity

    nac_capacity_a

    EGRESS-19-ALARM-03 NAC capacity

    10 A

Scored outputs

10 outputs

Design hrr

design_hrr_kw

Design heat release rate

Scores if within ±3% of the reference value.

Fire energy mj

fire_energy_mj

Fire energy over the design duration

Scores if within ±3% of the reference value.

Steel critical temp c

steel_critical_temp_c

Steel critical temperature from load ratio

Scores if within ±3% of the reference value.

Steel temperature margin c

steel_temperature_margin_c

Critical temperature minus calculated steel temperature

Scores if within ±3% of the reference value.

Visibility distance

visibility_distance_m

Visibility distance from extinction coefficient

Scores if within ±3% of the reference value.

Visibility margin

visibility_margin_m

Visibility distance minus required visibility

Scores if within ±3% of the reference value.

Required egress width

required_egress_width_m

Required aggregate egress width

Scores if within ±3% of the reference value.

Egress width margin

egress_width_margin_m

Available egress width minus required width

Scores if within ±3% of the reference value.

Nac current margin

nac_current_margin_a

NAC capacity minus NAC current

Scores if within ±3% of the reference value.

Overall pass score

overall_pass_score

1.0 when structural, tenability, egress, and NAC margins are non-negative

Scores if within ±0.1% of the reference value.

Difficulty

Each template is sampled at three tiers. Harder tiers may hide inputs, forcing the model to infer them from the scenario description.

All inputs remain visible at every tier

For this template, difficulty scales through parameter and scenario ranges rather than hidden information.

easy:
All source-pack values given for the SSC-19 structural fire and tenability package
medium:
All source-pack values given for the SSC-19 structural fire and tenability package
hard:
All source-pack values given for the SSC-19 structural fire and tenability package

Task bundle

The exact instruction and parameter contract used to generate this task, pinned to the published library source.

/workspace

  • instruction.md
  • structural-fire-tenability-package_calc.py

Teal lines show Jinja input conditions, not task visibility policy. A line renders only when that input or tool is visible.

1You are a structural fire engineer checking a task-owned synthetic SSC-19 structural fire and tenability package.2 3Use only the task-owned synthetic source pack values shown below for numeric grading. Structural fire engineering, tenability, egress, and fire-alarm workflows shape the context only; this instance does not run FDS, Smokeview, evacuation software, a structural fire model, or a real source-pack parser.4 5## Scene6 7- Product: `SSC-19-LH-03`8- Fire strategy: `FIRE-19-STRAT-03`9- HRR design basis: `HRR-19-DESIGN-03`10- Steel member schedule: `STEEL-19-MEMBER-03`11- Tenability criteria: `TEN-19-CRIT-03`12- Egress and alarm basis: `EGRESS-19-ALARM-03`13- Fire engineering memo: `MEMO-19-FIRE-ENG-03`14 15## Source Values16 17| Item | Value |18| --- | --- |19| Fire growth alpha | {{ fire_growth_alpha_kw_s2 }} kW/s2 |20| Time to check | {{ time_to_check_s }} s |21| Maximum HRR | {{ max_hrr_kw }} kW |22| Fire duration | {{ fire_duration_min }} min |23| Structural load ratio | {{ structural_load_ratio }} |24| Steel temperature | {{ steel_temperature_c }} degC |25| Visibility constant | {{ visibility_constant }} |26| Smoke extinction coefficient | {{ smoke_extinction_coefficient_m1 }} 1/m |27| Required visibility | {{ required_visibility_m }} m |28| Available egress width | {{ available_egress_width_m }} m |29| Occupant load | {{ occupant_load }} |30| Egress width factor | {{ egress_width_factor_m_per_10_persons }} m/10 persons |31| NAC current | {{ nac_current_a }} A |32| NAC capacity | {{ nac_capacity_a }} A |33 34## Checks35 36- Design HRR equals `min(fire_growth_alpha_kw_s2 x time_to_check_s^2, max_hrr_kw)`.37- Fire energy equals design HRR times duration in seconds divided by 1000.38- Steel critical temperature equals `39.19 x ln(1 / structural_load_ratio - 1) + 482`.39- Visibility distance equals visibility constant divided by smoke extinction coefficient.40- Required egress width equals occupant load times egress width factor divided by 10.41- NAC current margin equals NAC capacity minus NAC current.42- Overall pass score is `1.0` only when steel, visibility, egress, and NAC margins are non-negative; otherwise it is `0.0`.43 44## Output Format45 46Write a compact memo to `/workspace/output.md`. Include a source-boundary statement that this is a task-owned synthetic source pack. Preserve the object IDs above and state whether the baseline source pack passes the current docs-only checks.47 48Do not claim authority approval, accepted project evidence, software export validity, full standards compliance, executable real source-pack parsing, generated fire-model evidence, generated benchmark readiness, or benchmark readiness.49 50Include a fenced JSON block with exactly these numeric keys:51 52```json53{54 "design_hrr_kw": <numeric_value>,55 "fire_energy_mj": <numeric_value>,56 "steel_critical_temp_c": <numeric_value>,57 "steel_temperature_margin_c": <numeric_value>,58 "visibility_distance_m": <numeric_value>,59 "visibility_margin_m": <numeric_value>,60 "required_egress_width_m": <numeric_value>,61 "egress_width_margin_m": <numeric_value>,62 "nac_current_margin_a": <numeric_value>,63 "overall_pass_score": <numeric_value>64}65```66

Scenario archetypes

Each generated task is drawn from one of these realistic scenario bands.

Site contexts ground each scenario in a real locale the model can use to infer hidden values.

Ssc19 structural fire tenability case

ssc19_structural_fire_tenability_case

Structural fire and tenability case with HRR, steel, visibility, egress, and NAC checks

Parameter ranges
fire_growth_alpha_kw_s2
0.0469
time_to_check_s
240
max_hrr_kw
2800
fire_duration_min
20
structural_load_ratio
0.55
steel_temperature_c
420
visibility_constant
8
smoke_extinction_coefficient_m1
0.25
required_visibility_m
10
available_egress_width_m
8.4
occupant_load
320
egress_width_factor_m_per_10_persons
0.2
nac_current_a
6.5
nac_capacity_a
10

Example task

ssc19-structural-fire-tenability-case-preview — hard difficulty, all inputs given.

Structural fire and tenability case with HRR, steel, visibility, egress, and NAC checks. Required outputs: design_hrr_kw, fire_energy_mj, steel_critical_temp_c, steel_temperature_margin_c, visibility_distance_m, visibility_margin_m

The model sees

Scenario context and visible inputs.

fire_growth_alpha_kw_s2
0.0469 to 0.0469 kW/s2
time_to_check_s
240 to 240 s
max_hrr_kw
2800 to 2800 kW
fire_duration_min
20 to 20 min
structural_load_ratio
0.55 to 0.55
steel_temperature_c
420 to 420 degC
visibility_constant
8 to 8
smoke_extinction_coefficient_m1
0.25 to 0.25 1/m
required_visibility_m
10 to 10 m
available_egress_width_m
8.4 to 8.4 m
occupant_load
320 to 320
egress_width_factor_m_per_10_persons
0.2 to 0.2 m/10 persons
nac_current_a
6.5 to 6.5 A
nac_capacity_a
10 to 10 A

Executable tool: structural-fire-tenability-package_calc.py

The model must infer

Inputs withheld at this difficulty.

Nothing. All inputs are supplied.

The model must produce

The scored JSON answer schema.

{
  "design_hrr_kw": <number>,
  "fire_energy_mj": <number>,
  "steel_critical_temp_c": <number>,
  "steel_temperature_margin_c": <number>,
  "visibility_distance_m": <number>,
  "visibility_margin_m": <number>,
  "required_egress_width_m": <number>,
  "egress_width_margin_m": <number>,
  "nac_current_margin_a": <number>,
  "overall_pass_score": <number>
}
  • design_hrr_kw · scored within ±3%
  • fire_energy_mj · scored within ±3%
  • steel_critical_temp_c · scored within ±3%
  • steel_temperature_margin_c · scored within ±3%
  • visibility_distance_m · scored within ±3%
  • visibility_margin_m · scored within ±3%
  • required_egress_width_m · scored within ±3%
  • egress_width_margin_m · scored within ±3%
  • nac_current_margin_a · scored within ±3%
  • overall_pass_score · scored within ±0.1%