Description
Calculate useful bias-strip length after one loss per chain join.
Garment geometry distinguishes body and finished dimensions, elastic rest length, seamline/cutline offsets, motif phases and joining losses. A nominal coordinate or length budget does not establish material behavior or a suitable fit. Direction, angle units and the number of gaps rather than objects affect the result.
Calculate useful bias-strip length after one loss per chain join.
When to use this tool
Use Bias Strip Useful Length After Joins when checking the stated garment length, allowance, repeat or material-record convention.
How to use the tool and how it works
- Enter stripLengths, joinLossPerJoin. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read totalUnjoinedLength, usefulLength. Use the output convention below.
Require nonnegative strip lengths and joinLossPerJoin. Sum strips and subtract max(0,numberOfStrips-1)*joinLossPerJoin for usefulLength.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| stripLengths | Strip Lengths | Required. Array of finite number; maximum items 256. |
| joinLossPerJoin | Join Loss Per Join | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| totalUnjoinedLength | Total Unjoined Length | Required. Finite number. |
| usefulLength | Total strips minus (count-1) joins when count>0; may be negative. | Required. Finite number. |
{
"input": {
"stripLengths": [
100,
80,
60
],
"joinLossPerJoin": 5
},
"output": {
"totalUnjoinedLength": 240,
"usefulLength": 230
}
}Limitations and assumptions
- A single linear chain of joins is assumed; negative useful lengths are retained and no actual joint geometry or fabric method is assessed.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use measured pattern/material properties, fitting evidence and appropriate complete production methods for actual garment fit and construction.
References
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