Method — Screening-level estimate
Quantities follow from two declared areas and stated ratios. Facade glazing here is an area ratio only - use the Envelope, Facade & Roofing calculator for geometric facade area.
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
V_plaster = A_wall x t Where:
-
A= Internal wall area [m2] -
t= Plaster thickness [mm]
Derived Equations:
Tiled area:
A_tile = A_sellable x tile% Flooring follows sellable area:
A_floor = A_sellable Assumptions & Limitations
- Wall area is an input, not derived - enter it from drawings rather than a 3x rule of thumb.
- No ceilings, doors, sanitary fittings, joinery, skirtings or balconies.
- Flooring excludes common areas; add circulation finish separately if required.