Description
Subtract carriagewayWidth and sidewalkTotalWidth from rightOfWayWidth for remainingWidth.
Urban-design quantities depend on the measured boundary and denominator. Building height, parcel area, street width, and setbacks describe different geometric constraints and should use a common length or area basis.
Subtract carriagewayWidth and sidewalkTotalWidth from rightOfWayWidth for remainingWidth.
When to use this tool
Use Street Section Space Remainder when you need one planning geometry component from supplied dimensions before a wider design review.
How to use the tool and how it works
- Enter rightOfWayWidth, carriagewayWidth, sidewalkTotalWidth. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read remainingWidth. Use the output convention below.
Subtract carriagewayWidth and sidewalkTotalWidth from rightOfWayWidth for remainingWidth.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| rightOfWayWidth | Right Of Way Width | Required. Finite number; minimum 0. |
| carriagewayWidth | Carriageway Width | Required. Finite number; minimum 0. |
| sidewalkTotalWidth | Sidewalk Total Width | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| remainingWidth | Remaining Width | Required. Finite number. |
{
"input": {
"rightOfWayWidth": 20,
"carriagewayWidth": 10,
"sidewalkTotalWidth": 6
},
"output": {
"remainingWidth": 4
}
}Limitations and assumptions
- Use one length unit; negative remaining space is retained and no complete street layout or accessibility compliance 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
Check the applicable survey, planning rules, and professional design assessment before using the result in a project.
References
Similar or alternative tools
- Parcel Frontage Setback Depth
Subtract frontSetback and rearSetback from parcelDepth for buildableDepth.
- Frontage Active Length Fraction
Divide for activeFraction and subtract for inactiveLength.