Light gauge steel truss package for single-family home in Naples

In this project, ORIGIN’s responsibility was to design the LGS roof framing for a residential building. The truss design needed to be compatible with the Framecad rollformer system.

Input: Structural drawing set.

Project Deliverables:

• Roof trusses layout;
• Truss reports;
• Shop drawings for complex LGS trusses incompatible with the Framecad system;
• Framecad CNC files for LGS panels production.

The starting point for our LGS framing work is the Revit model. For roof framing, we only need to model the roof. We use architectural drawings to create an accurate Revit model. We send RFIs to the architect to clarify any discrepancies. Accurate roof modeling is vital for generating the LGS framing. We use StrucSoft MWF Advanced Metal, a Revit add-in, for automatic LGS framing creation.

At this stage, we focus on truss layout plans and generate individual truss reports. StrucSoft MWF Advanced Metal performs automatic truss calculations, which we then verify. Each report contains all the necessary information as required by the codes.

Some areas of this building have large spans that regular LGS trusses can’t handle without using double channels and gussets. For these trusses, we create shop drawings using Tekla Structures software. This approach speeds up the drawing issuance process and also provides steel detailing for all gusset plates.

The final step involves producing LGS panels. We export a CNC file from the Revit model, which can then be loaded into the Framecad rollformer. Assembly of the trusses follows, guided by truss reports that display the truss diagram.