How do I measure an offset when the duct has to drop 14 inches and move over 22 inches?

Treat the shift as a right triangle layout. The vertical drop is your Rise (14 inches) and the side-to-side shift is your Run (22 inches).

['Treat the shift as a right triangle layout. The vertical drop is your Rise (14 inches) and the side-to-side shift is your Run (22 inches).', 'Calculate the true center-line diagonal length of the fitting using the Pythagorean theorem (A 2 +B 2 =C 2 ).', 'Diagonal Length= 14 2 +22 2', '= 196+484', '= 680', '≈26.08 inches Provide the shop layout tech with the absolute Rise, Run, and the face-to-face Length available to ensure the transition pieces line up perfectly.']

Stop if

• 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.

Steps

• Treat the shift as a right triangle layout. The vertical drop is your Rise (14 inches) and the side-to-side shift is your Run (22 inches).
• Calculate the true center-line diagonal length of the fitting using the Pythagorean theorem (A 2 +B 2 =C 2 ).
• ≈26.08 inches Provide the shop layout tech with the absolute Rise, Run, and the face-to-face Length available to ensure the transition pieces line up perfectly.

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