Which of the following is a method to minimize construction time for buildings with 5 to 20 stories?

Precast concrete is a highly effective method for minimizing construction time, particularly for mid-rise buildings in the range of 5 to 20 stories. This approach involves manufacturing concrete components, such as walls and slabs, off-site in a controlled environment. Once these components are produced, they are transported to the construction site and assembled quickly. This speeds up the overall construction process by allowing for simultaneous site preparation and component fabrication.

Moreover, the use of precast concrete contributes to a reduction in on-site labor and construction waste, as many activities are completed away from the construction site, leading to a more efficient workflow. The modular nature of precast elements also allows for precision and quality control, further expediting the assembly process.

In contrast, wood framing, while often quicker for low-rise structures due to lighter materials and simpler techniques, is not typically used for buildings of this height and may not offer the same structural benefits in terms of fire and wind resistance. Heavy timber construction, while aesthetically pleasing and providing a unique architectural quality, may also not be as fast due to the nature of the materials and the need for specialized labor. Brick masonry is traditionally labor-intensive, requiring considerable time for the laying of bricks and curing processes, making it less efficient for rapid construction