Description
For nonnegative openingWidth, objectWidth, handMargin, and alignmentUncertainty return nominalClearance=opening-object, usableClearance=nominal-2*handMargin-2*uncertainty, and fits when nominal>=2*(handMargin+uncertainty).
Activity and assistive-task records distinguish planned, attempted, completed, assisted, observed, and optional components. Shares depend on the selected denominator and credit policy. A supplied code, geometry, or time-budget calculation is separate from evaluating an individual's function or safe access.
For nonnegative openingWidth, objectWidth, handMargin, and alignmentUncertainty return nominalClearance=opening-object, usableClearance=nominal-2*handMargin-2*uncertainty, and fits when nominal>=2*(handMargin+uncertainty).
When to use this tool
Use Home Task Workspace Clearance Gap when you need this specific task-count, assistance-code, timing, equipment-budget, or participation-record component.
How to use the tool and how it works
- Enter openingWidth, objectWidth, handMargin, alignmentUncertainty. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read nominalClearance, usableClearance, fits. Inspect fits before interpreting the associated values.
For nonnegative openingWidth, objectWidth, handMargin, and alignmentUncertainty return nominalClearance=opening-object, usableClearance=nominal-2*handMargin-2*uncertainty, and fits when nominal>=2*(handMargin+uncertainty).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| openingWidth | Opening Width | Required. Finite number; minimum 0. |
| objectWidth | Object Width | Required. Finite number; minimum 0. |
| handMargin | Hand Margin | Required. Finite number; minimum 0. |
| alignmentUncertainty | Symmetric per-side absolute allowance, counted twice. | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| nominalClearance | Nominal Clearance | Required. Finite number. |
| usableClearance | Usable Clearance | Required. Finite number. |
| fits | Fits | Required. Boolean. |
{
"input": {
"openingWidth": 100,
"objectWidth": 60,
"handMargin": 10,
"alignmentUncertainty": 2
},
"output": {
"nominalClearance": 40,
"usableClearance": 16,
"fits": true
}
}Limitations and assumptions
- Use one length unit. The symmetric static-width model does not account for depth, turning, grip posture, movement, individual capability, or safe workspace design.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use the intended assessment and a complete task or access model when a local check is insufficient. Verify task definitions, credit policies, measurement units, and the context of the underlying observations.
References
Similar or alternative tools
- Assistive Device Clearance Residual
Supplied nominal bench clearance only, without assistive-device fit or safety advice.
- Oral Surgery Phantom Screw Clearance Gap
For nonnegative holeDiameter, screwDiameter, and eccentricity return radialClearance=(hole-screw)/2, minimumGap=radialClearance-eccentricity, and fits when holeDiameter-screwDiameter>=2*eccentricity.