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Overview

This project is a two story residential house. Its shape is called A-Frame, also known as a barn house.

ORIGIN has been requested to develop structural construction drawings and perform structural analysis of LGS framing and foundation of the building.

Since the builder of the project had the Howick rollformer, CNC files for LGS panels production were also requested.

Input: Architectural drawings set.

Project deliverables:

  • Structural drawings set;
  • Structural analysis report;
  • LGS shop drawings;
  • Howick CNC files for LGS panels production.
Services STRUCTURE
Subservices Light gauge steel design and detailing
Industry Residential
Object type Single-family home
Area 70 m² / 760 ft²
Tools used Autodesk Revit, Strucsoft MWF Advanced Metal, SCIA Engineer, Tekla Tedds
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Project stages
1. Revit model creation
2. Structural modeling
3. Structural analysis
4. Structural drawings
5. LGS CNC export and shop drawings
Code/Authority List:
  • DS/EN 1991-1-1 DK NA: 2013 – Part 1-1: General actions — Densities, self-weight, imposed loads for buildings;
  • DS/EN 1991-1-3 DK NA: 2015 Version 2 – General actions — Snow loads;
  • DS/EN 1991-1-4 DK NA: 2015 General actions — Wind actions;
  • DS/EN 1993-1-3 DK NA: 2019 Part 1-3: General rules — Supplementary rules for cold-formed members and sheeting;
  • The Danish Building Regulation Standard.
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Step 1 — Revit model creation

Everything starts from architectural drawings.

We study them, building a conceptual structural scheme in mind. At this phase it is important to verify if architectural layouts will work structurally. All issues are noted and addressed to the Architect for adjustments if any.

Then, we turn PDF architectural drawings set into clean Revit model. It should consist foundation, floors, roofs and walls which will serve as a host of future LGS framing.

Step 2 — Structural modeling

Once Revit model is done, we start LGS framing creation.

For that, we use Strucsoft MWF Advanced Metal software. It’s Revit add-in which has various tool for automatic LGS framing creation, taking into account thickness of floors, roofs, walls and its openings.

Once it’s done, foundation modeling takes place.

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Step 3 — Structural analysis report production

Once preliminary structural modeling is completed, we start to run structural analysis of the whole structure.

For LGS framing calcs we use SciaEngineer software.

For masonry walls and foundation calcs we use excel spreadsheets and Mathcad spreadsheets.

Our calcs comply with the following codes:

  • DS/EN 1991-1-1 DK NA: 2013 — Part 1-1: General actions — Densities, self-weight, imposed loads for buildings;
  • DS/EN 1991-1-3 DK NA: 2015 Version 2 — General actions — Snow loads;
  • DS/EN 1991-1-4 DK NA: 2015 General actions — Wind actions;
  • DS/EN 1993-1-3 DK NA: 2019 Part 1-3: General rules — Supplementary rules for cold-formed members and sheeting;
  • The Danish Building Regulation Standard.

At the end of this page you will find a full structural report.

Step 4 — Drawings production

Once LGS framing is verified by calcs, we start to prepare Revit views like plans, sections, elevations, details.

Nothing needs to be drawn manually since we have completed structural model.

Drawings productions become the easiest part, just need to put dimensions, text annotations and notes on them.

Completed plans to be sent to building department for an approval.

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Step 5 — LGS CNC export and shop drawings

Once plans are approved, the final step is LGS panels production.

This process consists of two steps:

  1. First is to produce members of LGS panels. For that, we export CNC files from the Revit model which can be loaded into FRAMECAD rollformer. The machine starts to run the profiles.
  2. Second is to assemble LGS panels from the members. For that, we provide shop drawings for each panel, where each member is labeled and dimensioned.
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Drawings

Click on preview to view high resolution PDF drawings

Benefits
LGS framing exactly matches with the building geometry, eliminating installation issues on site
BIM model of LGS framing can be used for clash detection with other trades
CNC export of LGS panels allows to use CNC rollformers for LSG panels production, drastically saving manufacturing time
Tools used
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Autodesk Revit
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Strucsoft MWF Advanced Metal
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SCIA Engineer
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Tekla Tedds
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