NIOSH Vertical Multiplier Lookup

RNLE vertical hand-height multiplier1−.003|V−75|, actual hand height not stature/desk height. 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 vertical multiplier adjusts a lifting model for hand height relative to its reference height.

The NIOSH vertical multiplier adjusts a lifting model for hand height relative to its reference height.1

Its arithmetic is only one component of the lifting equation and does not establish task eligibility. Use this tool to calculate NIOSH Vertical Multiplier Lookup from the supplied measurements and assumptions.

When to use NIOSH Vertical Multiplier Lookup

Use this tool to calculate NIOSH Vertical 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 Vertical Multiplier Lookup and understand its results

  1. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
  2. Enter verticalHandHeightCm, using the field meanings and rules below, then run the tool.
  3. Read verticalMultiplier. 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
verticalHandHeightCmVertical hand height cmnumberRequired

Enter vertical hand height in cm from zero through 175. Calculate 1−0.003×abs(height−75). The value is one equation component; no other multiplier or applicability screen is calculated.

VM=1−0.003×abs(Vcm−75)

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

Output fieldMeaningValue type
verticalMultiplierVertical Multiplier; follow the units, sign, ordering and evidence convention stated abovenumber
json
{
  "input": {
    "verticalHandHeightCm": 100
  },
  "output": {
    "verticalMultiplier": 0.925
  }
}

Limitations and assumptions

Its arithmetic is only one component of the lifting equation and does not establish task eligibility. 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 RWL Load Constant Base Calculator for this related task: The Revised NIOSH Lifting Equation multiplies a load constant by six task multipliers.

Use NIOSH Lifting Index LI Calculator when its separate inputs and assumptions fit the question: A lifting index divides actual load by a recommended weight limit on the same mass basis.

References

  1. NIOSH Vertical Multiplier Lookup — tool.io

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