AEC Industry Terms
A single page from a construction drawing PDF. Identified by sheet number (A-101, E-201, S-301). The letter prefix indicates discipline.
The engineering trade responsible for a sheet. Common codes: A (Architectural), S (Structural), M (Mechanical), E (Electrical), P (Plumbing), FP (Fire Protection), C (Civil).
The building’s coordinate system. Grid lines (A, B, C / 1, 2, 3) are shared across all disciplines and floors. Grid intersection “B-3” refers to the same physical location on every sheet.
A table on a drawing sheet listing specifications for a category of elements (door schedule, window schedule, finish schedule, equipment schedule).
A table pairing graphical symbols with their text descriptions. Used to define what each symbol on a plan view represents.
A numbered annotation on a plan view with a leader arrow pointing to a specific element. References a keynote table elsewhere on the drawing set.
Request for Information — a formal question from the contractor to the design team about ambiguities or conflicts in the drawings.
A conflict where two building elements from different disciplines occupy the same physical space (e.g., a duct intersecting a beam at the same grid location and elevation).
Bedrock Platform Terms
A PDF file uploaded to Bedrock. Contains one or more sheets. Often represents one revision of a drawing set (e.g., “Arch Set Rev B”).
A self-contained region on a sheet — a plan view, detail, schedule, legend, notes section. Bedrock detects blocks automatically during processing.
A detected entity within a block — a room, door, wall, receptacle, dimension, symbol. Features nest via parent containment (a receptacle is inside a room).
A visual comparison between two matched blocks from different drawing revisions, highlighting additions (green) and deletions (red).
A typed edge in the Drawing Index knowledge graph connecting blocks or features. Examples: scheduled_in (door to schedule), defined_by (symbol to legend), references (callout to detail on another sheet).
The structured knowledge graph that Bedrock builds from construction drawings. Contains all sheets, blocks, features, relations, and grid data — queryable via REST API or MCP.
Model Context Protocol — an open standard for connecting AI agents to external data sources. The Bedrock MCP server gives agents like Claude and ChatGPT direct access to the Drawing Index.