RULA Upper Limb Group A Score Calculator
Resolve RULA upper-arm/lower-arm/wrist/twist posture indexing against caller 18×8 versioned Group A table, then supplied muscle/force adjustments; caller scores/evidence and table are not independently verified or safety certification.
Description
RULA Group A combines upper/lower arm, wrist and twist posture.
RULA Group A combines upper/lower arm, wrist and twist posture. Versioned table lookup and load adjustments are separate steps.1
Enter integer upper arm 1–6, lower arm 1–3, wrist 1–4, twist 1–2, muscle 0–1, force 0–3 and exact 18×8 table with integer cells 1–9. Return table score, adjusted score and zero-based indexes.
When to use RULA Upper Limb Group A Score Calculator
Use RULA Upper Limb Group A Score Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No observed posture scoring, independent table verification or safety certification is supplied.
Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
How to use RULA Upper Limb Group A Score Calculator and understand its results
- Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
- Enter upperArmPostureScore, lowerArmPostureScore, wristPostureScore, wristTwistScore, muscleUseAdjustment, forceLoadAdjustment, callerGroupATable using the field table and calculation rules, then run the tool.
- Read callerTablePostureScoreA, adjustedScoreA, tableRowIndex, tableColumnIndex. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| upperArmPostureScore | Upper arm posture score | number | Required |
| lowerArmPostureScore | Lower arm posture score | number | Required |
| wristPostureScore | Wrist posture score | number | Required |
| wristTwistScore | Wrist twist score | number | Required |
| muscleUseAdjustment | Muscle use adjustment | number | Required |
| forceLoadAdjustment | Force load adjustment | number | Required |
| callerGroupATable | Caller group a table | list of list of number | Required |
Enter integer upper arm 1–6, lower arm 1–3, wrist 1–4, twist 1–2, muscle 0–1, force 0–3 and exact 18×8 table with integer cells 1–9. Return table score, adjusted score and zero-based indexes.
row=3(upperArm−1)+lowerArm−1; column=2(wrist−1)+twist−1 Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| callerTablePostureScoreA | Caller table posture score a | number |
| adjustedScoreA | Adjusted score a | number |
| tableRowIndex | Table row index | number |
| tableColumnIndex | Table column index | number |
{
"input": {
"upperArmPostureScore": 1,
"lowerArmPostureScore": 1,
"wristPostureScore": 1,
"wristTwistScore": 1,
"muscleUseAdjustment": 1,
"forceLoadAdjustment": 2,
"callerGroupATable": [
[
2,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
],
[
3,
3,
3,
3,
3,
3,
3,
3
]
]
},
"output": {
"callerTablePostureScoreA": 2,
"adjustedScoreA": 5,
"tableRowIndex": 0,
"tableColumnIndex": 0
}
}Limitations and assumptions
No observed posture scoring, independent table verification or safety certification is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Matrices are limited to 128 rows and 128 entries per row. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use RULA Neck-Trunk-Legs Score Calculator: RULA Group B combines neck, trunk and leg posture scores. Its table and separate adjustments must come from the caller’s chosen protocol. For a complementary task, use RULA Final Grand Score Action Level Mapper: A RULA grand table caps high adjusted A/B scores into its final rows and columns. Action levels depend on caller bands.
References
-
RULA Upper Limb Group A Score Calculator — tool.io
Similar or alternative tools
- RULA Neck-Trunk-Legs Score Calculator
RULA Group B combines neck, trunk and leg posture scores. Its table and separate adjustments must come from the caller’s chosen protocol.
- RULA Final Grand Score Action Level Mapper
A RULA grand table caps high adjusted A/B scores into its final rows and columns. Action levels depend on caller bands.