Method — Geometry-based calculation
Facade area is the exposed building surface, not a share of sellable area. Curtain-wall performance and movement joints are not designed.
Every result below is produced by the same engineering engine that feeds the High-Rise reference project, so a quantity taken from this page and a quantity taken from the workflow cannot disagree.
Governing Formula
Governing Formula
A_facade = perimeter x storeys Where:
-
P= Building perimeter [m] -
n= Storeys
Derived Equations:
Glazed area:
A_glass = A_facade x glazed% Opaque panel area:
A_opaque = A_facade x opaque% Roof membrane area:
A_roof = A_plate x coverage% Assumptions & Limitations
- No thermal, acoustic or solar-control performance; no U-value or airtightness calculation.
- No curtain-wall mullion, anchorage or movement-joint design.
- Glazed and opaque ratios must sum to about 100%; the calculator reports each independently.