Plaster works include the preparation and application of cement-based plaster to all specified walls and ceilings to achieve a smooth, even, and durable surface. The work covers surface cleaning, hacking where required, applying bonding agents, and laying the plaster in the specified thickness, complete with proper levelling, finishing, and curing. All materials, labour, tools, and workmanship shall comply with approved specifications, ensuring a uniform finish ready for painting or other final finishes.