General Contractor Practice Exam

Which color of paint is commonly used for laying out a building?

1. Blue

2. Green

3. White

4. Red

The correct answer is: White

The choice of white paint for laying out a building is grounded in its visibility and practicality. White provides a strong contrast against typical soil and surface colors found at construction sites, making it easier for workers to see markings and ensuring accuracy in measurements and layout. This visibility is crucial during the initial stages of construction, where precise lines and boundaries need to be established for the foundation and other structural elements. Other colors might not provide the same level of contrast, which could lead to mistakes in the layout process. While blue, green, and red have specific uses in construction, such as indicating utility lines or for cautionary marking, white is the most universally accepted and utilized color for initial site layout due to its clarity and the way it stands out against various backgrounds.