To achieve a square layout in construction, which method is commonly utilized?

The three-four-five method is commonly utilized to achieve a square layout in construction because it is based on the fundamental properties of a right triangle. When you measure and create a triangle where one side is three units long, the second side is four units long, and the hypotenuse is five units long, you effectively ensure that the angle opposite the hypotenuse is a perfect right angle (90 degrees). This method allows builders to verify and establish right angles accurately on-site, which is crucial for ensuring that structures are square and aligned properly before proceeding with construction.

This technique is easy to execute with standard tape measures and doesn't require advanced math skills, making it particularly practical for construction workers in the field. The other methods listed have their uses in construction but do not specifically address the need to create a square layout. For instance, the Pythagorean theorem is a mathematical concept applied for various calculations, while leveling techniques focus on ensuring surfaces are even, and the angle bisector is a geometric concept mainly used in theoretical applications rather than practical site layout.