Replacement Fitting Sketch: Prevent a Second Mirrored or Rotated Remake
Sketch the replacement from a named viewing direction and mark airflow, top, upstream, downstream, connector types, control points, and fitting movement. Make it impossible to read the sketch from the opposite side.
I redrew the remake looking downstream, marked top and grid north, and showed the offset moving left. Can you verify the orientation before the shop releases it?
Watch out
Do not rely on a photo alone or use left and right without stating the viewing direction.
Check
Write “looking upstream” or “looking downstream” on the sketch.
Mark top and the building direction or grid reference.
Show which side rises, drops, shifts, or stays flat.
Include end sizes, connector types, verified dimensions, piece mark, and revision.
Steps
Write “looking upstream” or “looking downstream” on the sketch.
Mark top and the building direction or grid reference.
Show which side rises, drops, shifts, or stays flat.
Include end sizes, connector types, verified dimensions, piece mark, and revision.
Say this to your foreman
I redrew the remake looking downstream, marked top and grid north, and showed the offset moving left. Can you verify the orientation before the shop releases it?