Static field route #1043

Two duct sizes show on the same run and I do not know which applies

Print Reading, Tags & LayoutV136 field-polished

A duct main may reduce after branches take air out. Find the transition/reducer and confirm which side you are installing before grabbing material.

Open in Field Rescue Open category

Field checklist

Find the transition/reducer or branch point on the print.
Read upstream and downstream duct sizes separately.
Check shop drawing piece marks if material is staged.
Measure the field piece before hanging.
Ask if the size change point is unclear.

Ask foreman

This run shows [size] and [size]. Where does the transition happen, and which size applies to my piece at [location]?

Do not

Do not install a whole run from one duct-size label.

Why it matters

This route was added from apprentice scenario testing to catch natural field/search language before it becomes a dead end. Verify job-specific authority before acting.

Search words: two sizes same run duct size change reducing main transition size label wrong size two sizes same run duct size change reducing main transition size label wrong size