CAD drafting is the process of creating technical drawings using computer-aided design software. It has replaced manual hand drawing in virtually every engineering and construction discipline and is the foundation of how projects are designed, communicated, and built across the UK.

What is CAD drafting?

CAD stands for Computer-Aided Design. CAD drafting specifically refers to the production of technical 2D drawings — floor plans, elevations, schematics, engineering diagrams, and construction details — using software such as AutoCAD.

CAD drawings are the primary means by which design information is communicated between architects, engineers, contractors, and manufacturers throughout the construction and engineering process. They establish what is to be built, how it is to be assembled, and what the finished project should look like.

What software is used for CAD drafting?

AutoCAD by Autodesk is the dominant CAD drafting software in the UK and internationally. It produces DWG files, which have become the de facto standard format for 2D technical drawings. Other platforms include MicroStation (used in civil engineering and infrastructure), and specialist variants such as AutoCAD Plant 3D for process engineering.

For 3D modelling and BIM, Revit is the dominant platform. SolidWorks and CATIA are used for mechanical and product engineering.

Common types of CAD drawings

The main CAD drawing types in UK engineering and construction include floor plans and general arrangement drawings, elevation and section drawings, schematic drawings for electrical, mechanical, and plumbing systems, P&ID drawings for process engineering, as-built drawings recording the completed state of a project, structural drawings, and construction details.

What is the difference between CAD drafting and BIM?

CAD drafting produces 2D drawings that represent a design. BIM creates an intelligent 3D model containing both geometry and the data of a building — materials, specifications, quantities, and maintenance information. For most construction projects in the UK, both are used. BIM models are used for design coordination and clash detection; 2D CAD drawings are used for construction, planning submissions, and record-keeping.

Why engineering firms outsource CAD drafting

CAD drafting is time-intensive, requires skilled technicians, and the volume of work fluctuates considerably between project phases. Many UK engineering firms find it more cost-effective to outsource drawing production to a specialist company than to maintain a full in-house drafting team.

How Outsource CAD can help

Outsource CAD provides professional CAD drafting services across all common drawing types and engineering sectors. Contact us for a free quote at info@outsourcecad.com.

Frequently Asked Questions

What is the difference between CAD drafting and CAD design?

CAD drafting typically refers to the production of drawings from a design that has already been developed. CAD design involves using the software to develop the design itself. Outsourcing companies primarily provide drafting services.

What file format are CAD drawings delivered in?

AutoCAD DWG is the standard format for 2D CAD drawings in UK engineering and construction. PDF copies are normally provided alongside DWG files.

How long does CAD drafting take?

Turnaround depends entirely on drawing type and complexity. Simple drawing updates can be completed within 24 hours. Outsource CAD provides specific turnaround times in the project quote.