While highly accurate 3D models have their place in construction, not every project requires a millimetre-perfect visual. Duratec’s scan-to-BIM services offer cost-effective, time-efficient, fit-for-purpose alternatives.

The rise and rise of BIM

Over the past few years, the construction industry has been undergoing a digital revolution. Innovative new technologies are transforming the way we interact with the built environment.

One technology that continues to evolve and reshape the way we assess, remediate and maintain concrete-and-steel structures is building information modelling (BIM). BIM refers to the generation and management of 3D digital models that represent a building or infrastructure’s geometry and associated information.

This highly collaborative process combines a variety of data in one model, which then acts as a shared knowledge resource for all project stakeholders. BIM models comprise visual 3D objects, with attached metadata, that can be kept current throughout the construction or remediation process. They provide a single source of truth for geometry, progress and other component-level detail.

BIM – what are the benefits?

The benefits of using BIM models as the core framework to reference additional project information – such as floor plans, elevations, sections, costings, schedules and schematics – are comprehensive and include:

  • Enhanced visualisation
  • Better communication
  • Improved collaboration
  • Streamlined processes
  • Higher productivity
  • Reduced risk
  • Improved safety
  • Assists in asset management and maintenance
  • In line with sustainable building practices

It’s all in the detail

BIM models can be generated to have varying levels of detail depending on their intended use. Level of detail (LOD) provides a standardised approach to define the degree of intricacy used to represent a structure. The higher the LOD, the more detailed and accurate the information in the model.

The different levels range from low-detail (LOD 100) – typically simplified, three-dimensional models that represent the overall shape of a structure – to high-detail (LOD 500), which captures as-built conditions and precise information for fabrication and ongoing asset management. This highest level of detail ensures that the BIM model reflects the actual installed elements of the building.

When less is more

While Duratec has the ability to generate high-detail, as-built BIM models of maximum accuracy, such visual representations are not always necessary. Lower-resolution BIM may suffice when:

  • There are no existing or reliable drawings – this can be common when the structure is more than 30 years old
  • Existing drawings do not match the structure’s geometry, i.e. it has undergone modifcations
  • An as-built model is required for records, digital engineering (fast becoming mandatory for capital infrastructure), asset management plans, maintenance programs or design-and-upgrades

Capturing the data

There are various ways to capture reality data from buildings and infrastructure, one of which is terrestrial laser scanning. This method is extremely precise and the data
it extracts can be used to produce digital models of optimum accuracy.

To accommodate all scenarios, Duratec also offers data-capture methods that may provide less accurate data but are more cost-effective and time-efficient. These include photogrammetry, indoor drones and portable handheld laser scanners.

Indoor drones

Using onboard cameras, light detection and ranging (LiDAR), and thermal sensors, these drones capture images, videos and laser scans. They are specially designed to inspect the most inaccessible places and do not require GPS to fly.

Handheld scanners

Compact handheld laser scanners integrate panorama cameras and LiDAR to capture 360-degree images and laser scans. They are lightweight, wireless and able to capture data while the operator is on the move.

A tailored approach

Just as no two projects are the same, one size does not fit all when it comes to the visual representation of assets. Duratec is able to provide custom-designed digital modelling solutions with the right amount of detail – not too much and not too little – which translates into time and cost savings.

For more information, email [email protected].