The textbook “Mathematics for Plumbers and Pipefitters, 8th Edition” by Lee Smith (published by Cengage Learning) equips plumbing and pipefitting professionals with the essential math skills required for the trade—from foundational arithmetic and geometry through applied topics like pipe‐length calculations, sheet‐metal work, volume, pressure and capacities.Additionally, it includes a business chapter aimed at those looking to become self-employed in plumbing or pipefitting.