One face of a wall 5 m by 3 m is to be plastered. Plastering area is

Plastering area (surface area) = length x height (m^2) for one face of a wall. Per IS 1200 Part 14, plastering is measured as the actual plastered area in m^2. Deductions are made for openings (doors, windows) above 0.5 m^2; additions for reveals, jambs, and soffits if not measured separately. Area = length × height = 15 m².

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