Datum is a fundamental concept in design and engineering that refers to a reference point, line, or plane from which measurements are made or upon which a design is based. It serves as a starting point for creating, analyzing, or modifying a design, ensuring consistency and accuracy throughout the process. In the context of product design, datums are essential for establishing a common frame of reference for all components, allowing for precise alignment, assembly, and functionality. They also play a crucial role in quality control, as they provide a standard against which manufactured parts can be inspected and verified. Datums are typically chosen based on the functional requirements of the product, such as mating surfaces, critical features, or areas that require tight tolerances. The selection of appropriate datums is a key consideration in the design process, as it directly impacts the manufacturability, assembly, and performance of the final product. In computer-aided design (CAD) software, datums are represented by geometric elements such as points, lines, or planes, which can be used to create sketches, define constraints, and establish relationships between different parts of the design. The proper use of datums ensures that the digital model accurately reflects the intended design intent and can be effectively communicated to manufacturing and assembly teams.
reference point, geometric dimensioning, tolerancing, CAD
CITATION : "John Armstrong. 'Datum.' Design+Encyclopedia. https://design-encyclopedia.com/?E=434223 (Accessed on July 16, 2025)"
Datum is a term used to describe a fixed reference point in an architectural context. It is typically used to refer to the point of origin for architectural measurements in a particular project. For example, the datum is used to establish the coordinates for the location of walls, windows, doors, and other components of a building. The datum is also used to define the orientation of the building in relation to the surrounding environment, such as the cardinal directions of north, south, east, and west. It is also used to define the reference points for elevation and topography.
Scale, accuracy, orientation, reference, origin.
Masonry is a form of architecture that has been used since ancient times. The term datum refers to a particular reference point or starting point used to define the position of an object. In the context of masonry, datums are the reference points used to determine the exact orientation and placement of the stones and other materials used in the construction. This allows for accurate and precise measurements within the construction process and ensures that the structures are built to the highest standards of quality and safety. Datums are essential for the construction of any masonry structure, as they provide a foundation for the subsequent construction process.
Masonry, Orientation, Placement, Measurement, Accuracy.
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