Client Story.

Mott MacDonald: “With Cut Opening we can achieve the best outcomes for our clients”

Mott MacDonald’s Sydney team achieved outstanding results for a major infrastructure project by using Agacad’s Cut Opening software to design penetration holes in the Revit® models.


As a contractor for the $8.3 billion Sydney Metro Northwest Rail Link Project, Mott MacDonald’s team in Australia needed to efficiently create thousands of penetration holes in Autodesk® Revit® models for 8 new railway stations and related facilities.


The firm wanted a user-friendly solution capable of managing the huge number of holes in its structural models and smart enough to do things like join openings that are close or overlapping.

Mott MacDonald

Mott MacDonald is a global engineering, management and development consultancy focused on guiding its clients through many of the planet’s most intricate challenges. Its network of experts, active in 150 countries, have taken lead roles in the world’s highest profile infrastructure and development projects.

“Our main objective,” notes Stuart Simpson, the company’s Architectural Discipline Lead, “was to be able to quickly and accurately determine the amount of builders' work required in the formation and fire stopping of formed openings in walls and floors.”

Mott MacDonald got all the benefits it was looking for with Agacad’s Cut Opening plugin. “It cuts a penetration and allows for a tolerance around the element for things such as insulation, and this was easy to set up in the configuration settings,” Drake says.


Most importantly, he adds, it delivered “accurate results and excellent coordination” – things that can lower risk, enhance information management, and ensure on-time delivery.

Agacad provided training and close support during the project. At the same time, Mott MacDonald’s team made great requests and suggestions to increase functionality. Two of their ideas yielded enhanced Cut Opening performance: one made it faster to insert and modify openings in very large models; a second added more options for creating openings based on the cut offset or opening size.
Products used
Agacad’s Cut Opening plugin, which creates precision openings in Revit, was just right for Mott MacDonald's job. “We had previously achieved good results with this software in other regions and saw an opportunity to utilise it on this project,” recalls Digital Designer Matthew Drake. The Sydney team tested the software and was impressed with its combination of an interface that’s very easy to use with tremendous functional versatility. So, they put it to work on the Rail Link project.
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