AC1 Lecture 7 Oct 14, 2026 Part 2
From Site Photography to Collaborative BIM Documentation
This session of Advanced Computing 1 continued the development of Assignment 2, focusing on the relationship between measured survey information, site modelling, and collaborative Building Information Modelling (BIM).
Students were introduced to practical techniques for transforming site photographs, CAD information, and field measurements into a coordinated Revit project. The session also addressed the importance of software access, file management, and consistent naming conventions when working collaboratively.
The central objective is to develop a workflow that connects the information collected during a measured survey to an accurate, well-organised digital model and a professional documentation package.
1. Creating a Site Image from Photographs
The session began with a demonstration of Photoshop’s photo-merging feature, which can combine multiple photographs into a single, larger image of a building or site.
When preparing images for use in architectural documentation, students should consider:
Capturing photographs with sufficient overlap to support accurate merging.
Selecting images carefully to minimise perspective distortion.
Cropping and checking the merged image before saving it.
Using clear file names and keeping image files organised.
A merged photograph can provide useful visual reference information when interpreting a building’s form and developing measured survey drawings. However, it should complement measured dimensions rather than replace them.
2. Linking and Positioning Images in Revit
Once prepared, a site image can be linked into Revit and positioned to support the modelling process.
The demonstration explored how images can be placed and adjusted within the project, with attention to scale, alignment, file size, and practical handling.
Students should treat linked images as reference information. Their position and scale need to be checked against known dimensions or other reliable site information before they are used to guide model development.
3. Translating Survey Notes into Building Geometry
A key part of the session involved establishing a building outline in Revit using information from the measured survey.
Students were introduced to the use of model lines, detail lines, dimensions, and snapping techniques to translate field measurements into building geometry. Dimensions can be used to check the relationships between elements and help establish the intended building form.
The important principle is that the digital model should be developed from the recorded measurements, not simply traced from a photograph or drawn by eye.
Accurate field notes therefore remain essential. Clear measurements and sketches make it easier to interpret the building correctly and reduce the need to make assumptions during modelling.
4. Developing a Revit Site Model from CAD Data
The session also explored how external site information, including CADMapper data, can be used to establish a site model in Revit.
The demonstrated workflow included working with CAD files, preparing contour information, creating a Revit toposolid, and modifying site geometry to represent features such as roadways and the coastline.
Students were introduced to techniques for:
Preparing and organising CAD geometry before using it in Revit.
Working with contour information to develop site topography.
Subdividing areas of a toposolid to represent different site features.
Assigning materials to distinguish surfaces and landscape elements.
Reviewing geometry and addressing alignment or off-axis warnings.
The session highlighted that importing available site data is only the beginning. Information from sources such as CADMapper may not accurately reflect actual site conditions and should be checked against the survey evidence. Site geometry may need to be adjusted to represent the conditions documented during fieldwork.
5. Coordinating Building Models with Shared Coordinates
For projects involving multiple buildings, individual models must be positioned consistently within the wider site.
The session demonstrated how Revit models can be linked together and how shared coordinates help maintain their intended spatial relationships. Students were introduced to the processes of publishing and acquiring coordinates between files.
This approach allows separate building models to contribute to a coordinated site model without requiring all project information to be developed in a single file.
Good coordination depends on establishing reliable references, understanding each model’s position, and maintaining consistent file relationships throughout the project.
Students should also be mindful of how linked files are managed through Autodesk’s cloud collaboration tools and Desktop Connector, avoiding unnecessary duplication and circular file references.
6. Managing BIM Files and Applying Naming Conventions
A coordinated BIM project requires more than correctly modelled geometry. Files must also be identifiable, organised, and easy for team members to access.
The session introduced the application of ISO 19650 naming conventions to project files. The demonstration discussed elements of a naming structure, including project and originator identifiers, volume information, and discipline references.
Students should begin applying a consistent naming approach to their project files and group folders. Further examples and clarification of the complete naming structure will be provided in a subsequent class.
Revit drafting and coordination techniques were also demonstrated, including pinning elements to reduce accidental movement and managing linked information carefully.
7. Setting Up Revit and Autodesk Access
An important practical component of the session addressed students’ access to Revit 2026 and the Autodesk collaborative project environment.
Students were advised to ensure that they had a valid Autodesk account, were using the correct account email address, and had installed the required version of Revit.
To help coordinate access, students were asked to provide their names, initials, and Autodesk account email addresses through the class spreadsheet. This information will be used to manage invitations and access to the project folders.
Students experiencing access difficulties should follow the software setup instructions provided for Assignment 2 and ensure that their account details are correct.
8. Measured Survey Field Notes: Submission Requirements
The session reiterated the requirements for the first component of Assignment 2: the measured survey field notes.
Students were instructed to submit a single document of at least five pages, including the following:
Cover page.
Site plan.
Floor plans.
Elevations.
Photographs.
The field notes should be clearly organised and presented as a coherent record of the survey. Students should refer to the guidance provided in the Week 5 recording for further details on the expected content and format.
The submission deadline stated during the session was Friday the 16th. Students should refer to the course announcements or assignment instructions to confirm the applicable date and submission arrangements.
9. Preparing the Group Collaboration Workflow
Assignment 2 also requires students to explain how their group will organise and coordinate its work.
Groups should develop a practical workflow covering the management of survey information, allocation of modelling tasks, organisation of project files, and preparation of the final documentation package.
The upcoming class activity will involve presenting these collaboration strategies. Students should be prepared to demonstrate how their group intends to work, rather than simply describing the software it plans to use.
A well-defined workflow can help reduce duplicated effort, maintain consistency between files, and make it easier to review the accuracy and completeness of the final deliverables.
Preparing for the Next Session
Before the next class, students should:
Complete and submit the measured survey field notes.
Confirm that Revit 2026 is installed and accessible.
Provide the correct Autodesk account details for project access.
Organise their group’s files and supporting survey information.
Prepare a presentation explaining their collaboration workflow.
Review the use of linked images, CAD files, and Revit models.
Consider how site geometry and building positions will be verified against measured information.
The next session will build on these foundations through further examples of coordinated project files, naming conventions, and the development of a complete measured survey documentation workflow.
Central Theme
A reliable BIM model depends on accurate field information, carefully managed digital references, and a coordinated workflow. By connecting measured survey notes, photographs, CAD data, and linked Revit models, students begin to develop the information-management skills required for collaborative architectural practice.