How do I calculate how much all-thread rod to cut for a trapeze hanger?

{\text{Cut Length}} = {\text{Drop Distance (Deck to Bottom of Duct)}} - {\text{Strut Profile Height}} + {\text{Take-up adjustment allowance for top/bottom nuts}}

['{\\text{Cut Length}} = {\\text{Drop Distance (Deck to Bottom of Duct)}} - {\\text{Strut Profile Height}} + {\\text{Take-up adjustment allowance for top/bottom nuts}}', ' Rule of thumb: Measure from the concrete deck to your target bottom-of-duct elevation, add 2 inches for adjustment adjustments, and cut.']

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

• {\text{Cut Length}} = {\text{Drop Distance (Deck to Bottom of Duct)}} - {\text{Strut Profile Height}} + {\text{Take-up adjustment allowance for top/bottom nuts}}

More in Hangers, Supports, Rods & Trapeze