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A lettered and numbered grid locating structure.
Also known as: Structural grid symbol, Grid line reference, Setting out grid symbol
On a building plan a structural grid of lettered and numbered lines locates columns and walls, so any point can be described by a grid reference rather than by measurement.
Establishes a reference grid by which structural positions are named and set out.
Contexts: Technical drawing
Lets every discipline describe the same point identically, which is how a structural, services and architectural drawing of one building stay coordinated.
Contexts: Technical drawing
Long thin lines crossing the plan, each terminating in a circle containing a letter or a number.