
Forty pages of field math, expanded just enough to make them stick.
Job-Site Math is a compact field companion covering reading a tape, unit conversions, Ohm's Law and voltage drop, conduit fill, BTUs and CFM, pipe slope, stair rise and run, concrete by the yard, board feet, and markup and margin — every chapter worked examples first, practice problems and full answer key in the back.
Kindle $3.99 · PDF always free