NIOSH Distance Multiplier Lookup

RNLE vertical travel multiplier.82+4.5/max(25, D), not vertical hand-height multiplier. 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

The NIOSH distance multiplier accounts for vertical travel distance within a lifting model.

The NIOSH distance multiplier accounts for vertical travel distance within a lifting model.1

The implementation clamps short travel to its reference distance before applying the formula. Use this tool to calculate NIOSH Distance Multiplier Lookup from the supplied measurements and assumptions.

When to use NIOSH Distance Multiplier Lookup

Use this tool to calculate NIOSH Distance Multiplier Lookup from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.

How to use NIOSH Distance Multiplier Lookup and understand its results

  1. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
  2. Enter verticalTravelCm, using the field meanings and rules below, then run the tool.
  3. Read distanceMultiplier. Interpret the fields using their units, signs and evidence conventions below.
  4. 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 fieldMeaningValue typeRequirement
verticalTravelCmVertical travel cmnumberRequired

Enter vertical travel distance in cm from zero through 175. Clamp it upward to 25 cm, then return 0.82+4.5/clampedDistance. No origin/destination inference or applicability evaluation is performed.

DM=0.82+4.5/max(25,Dcm)

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

Output fieldMeaningValue type
distanceMultiplierDistance Multiplier; follow the units, sign, ordering and evidence convention stated abovenumber
json
{
  "input": {
    "verticalTravelCm": 50
  },
  "output": {
    "distanceMultiplier": 0.9099999999999999
  }
}

Limitations and assumptions

The implementation clamps short travel to its reference distance before applying the formula. 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 NIOSH Horizontal Multiplier Lookup for this related task: The NIOSH horizontal multiplier reduces a lifting-model allowance as horizontal reach increases.

Use NIOSH Vertical Multiplier Lookup when its separate inputs and assumptions fit the question: The NIOSH vertical multiplier adjusts a lifting model for hand height relative to its reference height.

References

  1. NIOSH Distance Multiplier Lookup — tool.io

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