Floor Plan · 1/4" = 1'-0"
Imperial 1/4" square grid - the legacy North American floor-plan workhorse.
Floor-plan grids are pre-calibrated to the imperial conventions used in North American residential architecture, with 1/4" = 1'-0" the dominant ratio for permit drawings. Background: A reading list on technical-drawing standards.
Imperial 1/4" square grid - the legacy North American floor-plan workhorse.
Imperial 1/8" grid - North American whole-house and small-commercial scale.
Imperial 1/2" grid - kitchen, bath, and millwork detail scale.