Description
Return rectangular mullion frame area and clear area.
Architectural openings and clearances depend on measured boundaries, projection axes and a caller-supplied comparison criterion. A positive geometric margin is distinct from demonstrating code compliance, safe access or a complete door-swing envelope. Plan lengths and projected dimensions must not be mistaken for full spatial measurements.
Return rectangular mullion frame area and clear area.
When to use this tool
Use Glazed Facade Mullion Area Share when checking the stated opening, projection or clearance geometry.
How to use the tool and how it works
- Enter width, height, verticalCount, verticalWidth, horizontalCount, horizontalWidth. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read frameArea, frameFraction, clearArea. Use the output convention below.
Return rectangular mullion frame area and clear area. Require positive facade dimensions, nonnegative whole member counts/widths fitting their axes; subtract crossing overlaps from summed member areas, clearArea multiplies remaining clear widths/heights.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| width | Width | Required. Finite number; strictly above 0. |
| height | Height | Required. Finite number; strictly above 0. |
| verticalCount | Vertical Count | Required. Safe integer; minimum 0. |
| verticalWidth | Vertical Width | Required. Finite number; minimum 0. |
| horizontalCount | Horizontal Count | Required. Safe integer; minimum 0. |
| horizontalWidth | Horizontal Width | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| frameArea | Full-span vertical plus horizontal member areas, subtracting their crossings once. | Required. Finite number. |
| frameFraction | Frame Fraction | Required. Finite number. |
| clearArea | Clear Area | Required. Finite number. |
{
"input": {
"width": 10,
"height": 5,
"verticalCount": 2,
"verticalWidth": 0.1,
"horizontalCount": 1,
"horizontalWidth": 0.2
},
"output": {
"frameArea": 2.96,
"frameFraction": 0.0592,
"clearArea": 47.04
}
}Limitations and assumptions
- This assumes full-span orthogonal members without edge-specific details; actual glazing, thermal performance and safe facade design are not established.
- 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 complete measured plans and a qualified architectural/engineering assessment with the applicable requirements for real construction or safety decisions.
References
Similar or alternative tools
- Opening Reveal Area Factor
Return rectangular opening reveal area.
- Door Leaf Undercut Area Term
Return ideal door-undercut area.