Window measurement formulas, rod elevation standards, fullness multipliers, and stack-back calculations.
Calculate exact rod overhang, total fabric width, panel counts, stack-back clearance, and hem cut lengths for sill, apron, floor, or puddle drapery.
Compare sill, apron, floating, trouser break, and puddled curtain lengths. Learn how to calculate floor clearances, hem allowances, and choose the right style.
Architectural elevation rules for curtain rod placement. Learn the 'high and wide' formula, how to calculate stack-back clearance, and ceiling mounting heights.
Master the mathematics of drapery fullness. Learn how to calculate 1.5x, 2.0x, and 2.5x fullness, bolt yardage requirements, and seam allowances for custom curtains.