Large buildings need coordinated drawings that turn the design brief into information the project team can review, price and build. CAD helps the team develop that documentation through successive design stages.
The design brief comes first
The owner and design team establish the building's use, site constraints, budget and required spaces. Architects and engineers test alternatives before developing the chosen approach.
The Burj Khalifa project illustrates the coordination involved in a large building. SOM records Emaar Properties as the client and a height of 828 metres. Its architectural and engineering teams developed the tower together with specialist collaborators.
How architectural drawings develop
The sequence below follows a typical design-bid-build project. Other delivery methods can overlap design, procurement and construction differently, so the project agreement determines the actual deliverables.
1. Schematic design
The team explores the building's arrangement, scale and appearance. Early site plans, floor plans, sections and elevations help the owner compare options and identify changes.
2. Design development
The selected concept becomes more detailed. The team coordinates architectural, structural and building-services information and develops materials, dimensions and major assemblies.
3. Construction documents
In the AIA description of basic architectural services, construction documents provide the drawings and specifications used to price and construct the work. For design-bid-build, this documentation is developed before contractors bid.
Architectural drafting support can help prepare the plans, elevations, sections and details from the responsible design team's instructions. The design professionals review and approve the documents.
4. Bidding and construction-stage revisions
Contractors use the issued documents to prepare bids. Questions and agreed changes may produce clarifications or addenda. During construction, further instructions and approved changes need consistent revision records across the drawing set.
5. Record and as-built drawings
Record drawings incorporate the changes and field information supplied through the project's agreed process. Their completeness depends on those records and any verification included in the scope. They should not be assumed to capture every concealed or undocumented condition.
Where CAD helps
CAD allows drawing geometry and annotations to be edited, reused and shared. A revision can be made without redrawing the whole sheet, but related plans and details still need to be checked for consistency.
Before commissioning CAD drafting, agree on the drawing list, software version, reference files, naming conventions and review stages. Clear inputs and controlled revisions matter throughout the project.
