Misclosure Ratio Quality Grade Checker (1% rule)
Raw closure magnitude/complete actual looplength×100; inclusive nominal1 percent bookkeeping rule only. Not a universal survey grade, accuracy confidence or certification.
Description
Loop misclosure can be expressed as closure magnitude relative to surveyed length.
Loop misclosure can be expressed as closure magnitude relative to surveyed length.1
A nominal one-percent check is a declared arithmetic comparison rather than a complete survey-grade assessment.
When to use Misclosure Ratio Quality Grade Checker (1% rule)
Use this tool to obtain observedMisclosurePercent, withinNominalOnePercentRule from the supplied records using the stated calculation. Establish the survey or observation scope, reference frame, units and independently applicable calibration or qualified plan.
How to use Misclosure Ratio Quality Grade Checker (1% rule) and understand its results
- Establish the survey or observation scope, reference frame, units and independently applicable calibration or qualified plan.
- Enter actualClosureMagnitudeMeters, actualSurveyedLoopLengthMeters, using the field meanings and rules below, then run the tool.
- Read result.observedMisclosurePercent, result.withinNominalOnePercentRule. Use the units and sign conventions below, and review any unknown records separately.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualClosureMagnitudeMeters | Actual closure magnitude meters | number | Required |
| actualSurveyedLoopLengthMeters | Actual surveyed loop length meters | number | Required |
Require nonnegative closure magnitude and positive surveyed loop length in metres. Calculate closure percent and compare it with one percent inclusively. No formal grade system or uncertainty propagation is applied.
misclosurePercent=100×closureMagnitude/loopLength; withinNominalRule=(misclosurePercent≤1) Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Qualified observed calculation or explicit reference | object |
| result.observedMisclosurePercent | Closure magnitude divided by surveyed loop length times one hundred. | number |
| result.withinNominalOnePercentRule | True when closure magnitude is no more than one percent of surveyed length. | boolean |
{
"input": {
"actualClosureMagnitudeMeters": 1,
"actualSurveyedLoopLengthMeters": 100
},
"output": {
"result": {
"observedMisclosurePercent": 1,
"withinNominalOnePercentRule": true
}
}
}Limitations and assumptions
The actual observation coverage, calibration and qualified plan determine applicability. A numerical result does not establish survey accuracy, route suitability, atmosphere conditions or equipment adequacy beyond the declared comparison.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Survey Loop Misclosure Error Calculator: A closed-loop survey ideally returns to its start in the adopted coordinate frame. For a complementary comparison, use Blunder Detection Residual Outlier Flag Calculator: Adjustment residuals can be screened against an independently justified absolute review threshold.
References
Similar or alternative tools
- Survey Loop Misclosure Error Calculator
A closed-loop survey ideally returns to its start in the adopted coordinate frame.
- Blunder Detection Residual Outlier Flag Calculator
Adjustment residuals can be screened against an independently justified absolute review threshold.