Answer :
Final answer:
Most construction drawings are created using orthographic projection, which allows for precise and accurate representation of three-dimensional objects through multiple two-dimensional views. This method is crucial for ensuring that measurements can be directly translated from the drawing to the real-world dimensions. TRUE
Explanation:
The statement is TRUE: Most construction drawings are indeed created using orthographic projection. Orthographic projection is a technique for creating a two-dimensional representation of a three-dimensional object with views from different sides. In first-angle orthographic projection, the object is projected onto three planes perpendicular to each other, creating three different views: the front view, the top view, and the side view. These views help in visualizing the object's dimensions and shapes from different perspectives.
Construction drawings typically involve this method because it allows for precise measurements to be taken and translated directly into the real-world dimensions of the structure being built. Unlike perspective drawings, where distances and angles can appear distorted, orthographic projection maintains the true scale, ensuring that measurements are accurate and unambiguous.
For example, architects and engineers use orthographic projections to represent the sides of a building or even angled views. In the case of engineering drawings, such as for a machine part, they follow the same principle of parallel projection. This means that a line is drawn from each point on the object perpendicular to the drawing surface, ensuring that all dimensions remain accurate when scaled down.
When starting to make your first orthographic drawing, such as a mobile staircase, one would begin by drawing the front view in the upper left block. Then, using construction lines, the top and side views can be depicted to provide a full representation of the object from different angles.
