Equivalent absorption area m2
equivalent_absorption_area_m2
Equivalent absorption area
Scores if within ±3% of the reference value.
Calculates room reverberation time using the Sabine formula RT60 = 0.161 V / A, where A is the equivalent absorption area. The template uses explicit floor, wall, and ceiling areas and absorption coefficients for a deterministic room acoustics calculation.
with-tool: The model is given an executable Python calculator script.
Standards
One template produces many comparable benchmark tasks while keeping the scoring contract fixed.
01
The reusable contract shown on this page.
02
An archetype and site context are sampled.
03
Inputs may be hidden at harder tiers.
04
The model responds with the declared outputs.
Inputs the model receives, and the outputs it is scored on.
7 inputs
Included directly in every task prompt.
Room volume
room_volume_m3
Room volume
Floor area
floor_area_m2
Floor surface area
Floor absorption
floor_absorption
Floor absorption coefficient
Wall area
wall_area_m2
Total wall surface area
Wall absorption
wall_absorption
Wall absorption coefficient
Ceiling area
ceiling_area_m2
Ceiling surface area
Ceiling absorption
ceiling_absorption
Ceiling absorption coefficient
3 outputs
equivalent_absorption_area_m2
Equivalent absorption area
Scores if within ±3% of the reference value.
average_absorption_coefficient
Area-weighted average absorption coefficient
Scores if within ±3% of the reference value.
rt60_s
Sabine reverberation time
Scores if within ±3% of the reference value.
Each template is sampled at three tiers. Harder tiers may hide inputs, forcing the model to infer them from the scenario description.
For this template, difficulty scales through parameter and scenario ranges rather than hidden information.
The exact instruction and parameter contract used to generate this task, pinned to the published library source.
/workspace
Teal lines show Jinja input conditions, not task visibility policy. A line renders only when that input or tool is visible.
1You are a senior mechanical engineer specializing in room acoustics.2 3## Problem4 5Calculate single-band reverberation time using the Sabine formula.6 7## Given8 9| Parameter | Value | Unit |10|-----------|-------|------|11| Room volume | {{ room_volume_m3 }} | m3 |12| Floor area | {{ floor_area_m2 }} | m2 |13| Floor absorption coefficient | {{ floor_absorption }} | - |14| Wall area | {{ wall_area_m2 }} | m2 |15| Wall absorption coefficient | {{ wall_absorption }} | - |16| Ceiling area | {{ ceiling_area_m2 }} | m2 |17| Ceiling absorption coefficient | {{ ceiling_absorption }} | - |18 19{% if archetype_description is defined %}20### Acoustic Context21 22{{ archetype_description }}23{% endif %}24 25{% if tool_available %}26## Available Tool27 28A Sabine RT60 calculation tool is available at `/workspace/{{ meta.name }}_calc.py`. Run it with:29 30```bash31python3 /workspace/{{ meta.name }}_calc.py --help32```33 34You may use this tool to verify your calculations or compute values directly.35{% endif %}36 37## Required38 39Calculate the following:40 411. Equivalent absorption area (m2)422. Area-weighted average absorption coefficient433. Sabine RT60 (s)44 45## Constraints46 47- No internet access is available. Work from engineering knowledge and the provided tool.48- Use equivalent absorption area A = sum(surface area x absorption coefficient).49- Use average absorption coefficient = A / total surface area.50- Use Sabine reverberation time RT60 = 0.161 x room volume / A.51 52## Output Format53 54Show your step-by-step working in Markdown. At the end of your solution, include a JSON block with your final answers in exactly this format:55 56```json57{58 "equivalent_absorption_area_m2": <numeric_value>,59 "average_absorption_coefficient": <numeric_value>,60 "rt60_s": <numeric_value>61}62```63 64Write your complete solution to `/workspace/output.md`.65 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.
small_meeting_room
Small meeting room with moderate finishes
large_hall
Large hall or concourse acoustic volume
station-concourse-large-hall-preview — hard difficulty, all inputs given.
Large hall or concourse acoustic volume. station-concourse. Required outputs: equivalent_absorption_area_m2, average_absorption_coefficient, rt60_s
Scenario context and visible inputs.
Executable tool: sabine-rt60_calc.py
Inputs withheld at this difficulty.
Nothing. All inputs are supplied.
The scored JSON answer schema.
{
"equivalent_absorption_area_m2": <number>,
"average_absorption_coefficient": <number>,
"rt60_s": <number>
}