Precast slabs are large, flat concrete panels that are manufactured in a controlled environment before being transported to a construction site. These slabs are designed to be used as floors or roofs in buildings, providing structural support and a smooth surface for finishing. The precasting process allows for better quality control and faster construction times compared to traditional on-site pouring methods. Once at the site, precast slabs are lifted into place using cranes and secured to the building's framework. This method reduces labor costs and minimizes construction waste. Precast slabs are commonly used in commercial buildings, parking garages, and residential projects, making them a popular choice in modern construction.