Plaster Ceilings Construction Sequence includes which of the following steps?

• A. Attach channel
• B. Attach a 3/4 inch cold rolled steel channel using iron ties
• C. Apply three coats of plaster
• D. Attach heavy gauge 1-1/2 inch cold rolled steel channel

Answer: (C)

In plaster ceilings, the surface finish is built up with multiple coats of plaster. The key idea is to apply a sequence of coats—scratch coat to key the plaster to the lath, a brown coat to build thickness and level the surface, and a final finish coat to create a smooth, paint-ready layer. This multi-coat process is what creates the durable, even ceiling surface.

The other steps describe installing the underlying support or framing for the plaster (such as channels or supports) rather than the plastering work itself. They happen earlier in the construction sequence, before the plaster is applied. Therefore, the step that belongs to the plaster ceilings construction sequence itself is applying three coats of plaster.