What Is Traditional 2D Drafting?

Traditional 2D drafting involves producing construction documentation through a collection of separate drawings.

Plans, sections, elevations, and details are drafted individually and coordinated manually throughout the design process.

When design changes occur, each drawing may require separate updates to ensure consistency across the documentation package.

This workflow remains effective and is still used extensively across the construction industry. However, as projects increase in size and complexity, maintaining coordination across multiple drawing sets can become more challenging.

What Is Revit?

Revit is a Building Information Modelling (BIM) platform that allows consultants to develop a coordinated three-dimensional model of a project before construction begins.

Rather than drawing individual plans and sections separately, building elements such as walls, columns, beams, slabs, footings, and retaining structures are modelled as part of a single integrated system.

The drawings are then generated directly from the model.

Because all project information originates from the same source, updates made to the model automatically flow through to plans, sections, elevations, schedules, and other documentation outputs.

This helps improve consistency and reduces the likelihood of conflicting information appearing throughout the drawing package.

The Key Difference: Drawing-Based vs Model-Based Design

The most significant difference between traditional drafting and Revit is how project information is created and managed.

In a traditional drafting environment, drawings are the primary source of information.

In Revit, the model becomes the primary source of information, with drawings generated directly from that model.

This shift creates several advantages during design development and coordination, particularly on projects involving multiple consultants and complex design requirements.

Improved Visualisation During Design

One of the biggest challenges with traditional 2D documentation is visualising how all project elements interact.

Experienced designers can interpret plans and sections effectively, but understanding complex relationships often requires reviewing multiple drawings simultaneously.

Three-dimensional modelling provides a clearer representation of the building as a whole.

Project teams can better understand:

• Structural framing layouts

• Basement configurations

• Floor level relationships

• Retaining structures

• Architectural features

• Site constraints

This improved visibility supports better decision-making during the early stages of design when changes are easier and less costly to implement.

Better Coordination Between Consultants

Residential projects require close coordination between architects, structural engineers, civil engineers, building services consultants, surveyors, and geotechnical specialists.

When consultants work from separate drawing sets, coordination issues can sometimes remain undetected until later stages of documentation or construction.

Because Revit creates a coordinated digital representation of the project, potential conflicts can often be identified and resolved earlier.

This may help reduce:

• Documentation inconsistencies

• Design clashes

• Late-stage revisions

• Requests for information (RFIs)

• Construction delays caused by unresolved issues

Early coordination creates greater certainty for all project stakeholders.

More Consistent Documentation

Documentation quality plays a critical role in project delivery.

Builders rely on drawings to understand project scope, coordinate trades, order materials, and plan construction activities.

In a traditional drafting environment, updates may need to be manually applied across multiple drawings.

In a model-based workflow, documentation is generated from a single coordinated source.

This helps improve:

• Drawing consistency

• Documentation accuracy

• Schedule coordination

• Detail alignment

• Information reliability

The result is a clearer and more coordinated documentation package for construction teams.

Supporting Better Communication

Not every project stakeholder reviews technical drawings the same way.

Developers, clients, builders, and approval authorities often benefit from being able to visualise the project more clearly than plans and sections alone can provide.

Three-dimensional models help communicate design intent by providing a visual representation of the proposed project.

This can support discussions relating to:

• Design development

• Structural solutions

• Site constraints

• Buildability considerations

• Construction methodology

Improved communication often leads to faster decision-making and fewer misunderstandings throughout the project lifecycle.

Why STC Engineering Uses Revit

At STC Engineering, Revit forms an important part of our project delivery process.

By developing coordinated structural and civil models from the early stages of design, we can review project constraints, identify potential coordination issues sooner, and produce clearer construction documentation.

The objective is not simply to create a 3D model. The objective is to improve project outcomes through better coordination, clearer communication, and more reliable documentation.

For developers and architects, this creates greater confidence throughout design development and construction planning.

Conclusion

Traditional 2D drafting remains a proven and effective method of producing construction documentation. However, modern residential projects increasingly benefit from the additional coordination and visibility provided by Revit-based workflows.

By creating a coordinated digital model before construction begins, project teams can improve communication, identify issues earlier, reduce documentation inconsistencies, and support more efficient project delivery.

As project complexity continues to increase, model-based design is becoming an increasingly valuable tool for delivering coordinated and well-documented residential projects.