TinnerFlow™3rd YearTrade CoordinationYELLOW · Check First
Use an engineered pants-leg transition fitting (wye split) that divides the main air trunk stream into two smaller, parallel balanced duct lines that glide cleanly past the left and right flat faces of the column structure.
Use an engineered pants-leg transition fitting (wye split) that divides the main air trunk stream into two smaller, parallel balanced duct lines that glide cleanly past the left and right flat faces of the column structure.
Re-marry the two air paths back together into a single master trunk line on the other side of the column using a matching reverse-wye fitting.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.