Anthropometric Step Height Stair Riser Comfort Checker

Actual stair-riser/functional-step ratio vs caller task/person comfort bands; caller independently measures ratio, no stair-code compliance. Unknown criteria explicitly distinguish zero placeholders. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.

Description

A stair comfort comparison depends on the selected dimensionless measure and review interval.

A stair comfort comparison depends on the selected dimensionless measure and review interval.^[1]

Explicit known flags preserve unassessed observations instead of treating them as acceptable measurements. Use this tool to calculate anthropometric Step Height Stair Riser Comfort Checker from the supplied measurements and assumptions.

When to use Anthropometric Step Height Stair Riser Comfort Checker

Use this tool to calculate anthropometric Step Height Stair Riser Comfort Checker from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.

How to use Anthropometric Step Height Stair Riser Comfort Checker and understand its results

Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
Enter observedObservedRiserToFunctionalStepRatio, callerVerifiedObservedRiserToFunctionalStepRatioLower, callerVerifiedObservedRiserToFunctionalStepRatioUpper, knownObservedRiserToFunctionalStepRatioCriteriaFlags, using the field meanings and rules below, then run the tool.
Read signedKnownMargins, knownReviewIndices, unknownCriteriaIndices. Interpret the fields using their units, signs and evidence conventions below.
If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.

Input field	Meaning	Value type	Requirement
observedObservedRiserToFunctionalStepRatio	Observed observed riser to functional step ratio	list of number	Required
callerVerifiedObservedRiserToFunctionalStepRatioLower	Caller verified observed riser to functional step ratio lower; caller assertion or measurement requiring independent evidence	list of number	Required
callerVerifiedObservedRiserToFunctionalStepRatioUpper	Caller verified observed riser to functional step ratio upper; caller assertion or measurement requiring independent evidence	list of number	Required
knownObservedRiserToFunctionalStepRatioCriteriaFlags	Known observed riser to functional step ratio criteria flags; binary 1=known, 0=unknown, in the order described below	list of number	Required

Enter nonempty aligned finite observations, lower bounds, upper bounds and binary known flags. Require lower≤upper per item. Known signed margins are min(observed−lower,upper−observed); a negative margin places that zero-based index in knownReviewIndices. Equality is inside. Unknown entries receive placeholder margin 0 and enter unknownCriteriaIndices; their numeric values and bounds are still validated. No standard threshold, measurement or general suitability assessment is installed.

margin_i=known_i ? min(value_i−lower_i,upper_i−value_i) : 0; review={known and margin<0}; unknown={known_i=0}

Use the exact units, boundary rules, ordering and missing-evidence conventions above.

Output field	Meaning	Value type
signedKnownMargins	Per-item smaller distance to either bound; negative outside, zero placeholder for unknown items	list of number
knownReviewIndices	Zero-based indices of known observations strictly outside the supplied inclusive window	list of values
unknownCriteriaIndices	Zero-based unassessed criterion indices; placeholder margins are not passes	list of number

json

{
  "input": {
    "observedObservedRiserToFunctionalStepRatio": [
      2,
      5
    ],
    "callerVerifiedObservedRiserToFunctionalStepRatioLower": [
      1,
      1
    ],
    "callerVerifiedObservedRiserToFunctionalStepRatioUpper": [
      3,
      4
    ],
    "knownObservedRiserToFunctionalStepRatioCriteriaFlags": [
      1,
      0
    ]
  },
  "output": {
    "signedKnownMargins": [
      1,
      0
    ],
    "knownReviewIndices": [],
    "unknownCriteriaIndices": [
      1
    ]
  }
}

Limitations and assumptions

Explicit known flags preserve unassessed observations instead of treating them as acceptable measurements. Interpretation depends on the units, sampling scope and exact model described above.

All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.

Alternative or Complementary methods

Use Kneeling Pad Thickness Comfort Minimum Rule Checker for this related task: A kneeling-pad measurement needs an independently established review interval.

Use Anthropometric Handrail Height Optimal Range Checker when its separate inputs and assumptions fit the question: Handrail-height comparisons require a declared measurement basis and applicable bounds.

References

Anthropometric Step Height Stair Riser Comfort Checker — tool.io

Similar or alternative tools

Kneeling Pad Thickness Comfort Minimum Rule Checker
A kneeling-pad measurement needs an independently established review interval.
Anthropometric Handrail Height Optimal Range Checker
Handrail-height comparisons require a declared measurement basis and applicable bounds.