The value of a ‘click and go approach’ on offsite projects, with Howick and Tekla

When it comes to offsite construction, accuracy is key if we as an industry are to achieve the speed and carbon savings promised by the modern method. Automation and digitisation have a big role to play in achieving this, helping to save time, streamline the repetitive and reduce the likelihood of human error. Read on to hear from Frameclad, the light-gauge steel frame manufacturer…

A key part of this digital approach is the integration between 3D modelling software and fabrication machinery, connecting the detailing and manufacturing stages. The partnership between Howick and Tekla software is a great example of this, with a number of plug-in tools available to aid the construction of models using Howick machinery.

Speaking about their use of the Howick tools extension in Tekla Structures, Jack Murphy, Senior Design at Frameclad, said: We use the tools for all panelised systems, particularly the Howick Connection Tool. For example, when detailing C-Sections, we can simply load in the ‘lip cut’ and apply to all highlighted intersections, with the software automatically removing the lip from the steel. This will then allow the adjacent swaged stud to slide down into the base section when preassembled in the factory, prepared for site installation.

Similarly, with just a couple of clicks we can detail ‘dimples’, creating an indent at the components’ intersections, which – when fitted together in the factory - acts as a fixing guide and allows for the fixing to fit flush against the frame.

As a business, we have our own pre-sets in the Howick Connection Tool. That’s one great thing about the tool: you can either load in pre-sets bespoke to your company’s manufacturing processes, such as using a specific tool or punch size; or you can customise it, creating more bespoke detailing to suit scheme requirements and provide further scope. You can then easily apply all set connections and cuts with just a couple of clicks.

This idea of a ‘click and go’ approach is hugely valuable; it significantly helps the company run more efficiently in its operations. The time savings are considerable, with the ability to essentially ‘copy and paste’ connections. This is particularly ideal for offsite construction where similar connection details are quite frequent – we only really have a small selection of connections that we use day-to-day. This has enabled us to adopt a more streamlined approach, drastically cutting down on our design time.

The accuracy levels are another big benefit - what you see in the model is what will get fabricated and delivered to site.

In addition to the Howick Connection Tool, Frameclad utilises the Howick Export Tool, also available in Tekla Structures. Jack explained: Once we have the completed and approved design, frame numbers are generated, with every part given a reference. A bill of materials on associated assembly drawings are all automatically created by Tekla, in much the same way as an IKEA flat pack – just on a larger scale.

Using the Export Tool, we can export the Tekla model as a CSV file, which is then plugged directly into the Howick cold roll forming machinery we have in our factory. The accuracy attained here is tremendous and is the core benefit of this integrated link. While it is possible to transfer the model data manually, it’s a time-consuming process. Instead, we can essentially leave the machinery to it and rely on the cold roll-formed steel being accurate, removing the chance of human error.

The part references are then printed on each component once processed through the Howick machine, to assist with assembling the frames when read in conjunction with the assembly drawings. The references also indicate where each panel will be located on site.

The Chocolate Factory development in London’s Wood Green is a great example of this automated and integrated approach, with the smart link between Tekla software and the cold roll forming machinery allowing for efficient manufacturing of the structure’s wall frames and roof cassettes.

Craig Johnson, Business Development Manager at Trimble, says: It’s an exciting time for light metal framing (LMF) manufacturers and detailers. Across the industry, we’re seeing a real increased uptake of volumetric and LMF methods, with the approach offering the desired levels of control and accuracy that the construction industry needs.

To meet and support the increased demand, we’ve been introducing a range of new features, functionalities and updates within Tekla. For example, the latest version of our framing tools (released early 2024) provides functionalities related to the insulation of structural elements, allowing companies to easily add in insulation and multiple layers of boarding to their model. This is ideal for manufacturers who offer fully panelised frames, an increasingly common option.

Of course, another great value of Tekla for LMF is the ability to incorporate and visualise multiple materials within the one model, meaning that detailers can model cold-rolled steel, hot-rolled steel and concrete. Then you have the direct integration and interoperability between software and machinery, with the ability to export manufacturing information from the drawing office to the factory, with minimal manual input required.

We’ve been working closely with Howick for many years now, with a series of Howick plug-in tools available within Tekla Warehouse, all facilitating an effective and efficient workflow between software and machine. In fact, a recent questionnaire sent out by Howick to its database had Tekla Structures coming out on top as the detailing software for light metal framing – something that we’re incredibly proud of.

To learn more about Tekla Structures, please visit: www.tekla.com/uk