Which step is performed first in Acoustical Ceilings construction sequence?

• A. Attach one quarter inch pencil rod to underside of deck
• B. Attach hanger clip to 1 1/2 inch cold rolled steel channel
• C. Insert black iron hanger clip
• D. Insert main tees

Answer: (A)

Establishing the suspension system is the initial step. The quarter-inch pencil rod is the primary element used to hang the ceiling grid from the structural deck and set the grid height. By attaching these rods to the deck at the layout points, you create a vertical framework that determines level and alignment for all the rest of the components. Once the pencil rods are in place, you can attach the hangers or clips to support the main tees and eventually insert the tees themselves. Without these rods, there’s nothing to suspend the grid from, so this step must come first.