Apprentice question
Field check
Standard work. Do it right, keep moving.
A 45° offset travel piece follows the diagonal path, not the flat throw. Use the 45° multiplier, then subtract the fitting takeoffs before cutting the spool.
['For a basic 45° offset, the straight travel piece is not the same as the flat offset distance. The pipe or duct is moving along the diagonal, so the travel length is longer than the measured throw.', 'Use the 45° trade multiplier to get the centerline travel, then account for fitting center-to-face dimensions, collars, flanges, and any shop takeoff before cutting metal. The math gets the rough path; the actual fitting dimensions finish the cut.']