1. As Built Modelling

An existing building's As-Built BIM is a type of building information model.

It may display the precise location of structural, mechanical, plumbing, and occasionally electrical members, depending on the category.

The actual geometry and measurements of every element that was visible at the time of the survey are shown in the as-built model. An as-built BIM is usually a three-dimensional model of an existing building since when you conceive about BIM, it is always expected that you would be working in 3D.

Many projects in the AECO (Architecture, Engineering, Construction and Operations) sector are not completed as originally intended because of implementation challenges and problems that arise throughout the project.

Each agent must, however, have trustworthy information relevant to the existing asset in order for maintenance activities to benefit from the model. No operations or other sort of activity on the asset may be carried out without first revising the linked model if the project envisioned by the model and the one carried out after implementation differ.

In order to carry out operations or any other form of follow-up activity without having to check whether the model is in line with the project carried out, the file relating to the model developed with BIM methodology should be as objective and precise as feasible.

It would be quite simple to assume that the projects created and those implemented are in accord, but this is not the case. All completed projects are not exactly as they were initially intended.

Even if it involves changing a little portion of the floor, all projects go through minor alterations. The "As-Built" file is the accurate representation that is updated and changed as the item is modified

2. Scan to BIM

In order to develop or update a BIM model, scan-to-BIM uses 3D laser scanning to digitally record an existing building as a point cloud.

Building Information Modelling, often known as Scan-to-BIM, is a digital planning technique that involves documenting an existing structure (BIM).

A BIM model that accurately represents the "as-is" state of a real building, structure, or site is created and maintained using a high-density point cloud that 3D laser scanners acquire of the subject.

Models created with scan-to-BIM can be used for facility management, project renovations and extensions, as-built documentation, and other downstream purposes.

Models created with scan-to-BIM are also incredibly helpful for topographic registration, comparing against original plans, and other uses.

The idea is as follows. But before we can fully define scan-to-BIM, we need to step back and look at it in the bigger picture of BIM.

Let's examine how BIM is now used in the architectural, engineering, and construction (AEC) sectors in order to achieve that.

The need for BIM deployment and the production of BIM schematics for existing buildings is expanding within the AEC sector. Scan-to-BIM is rapidly turning into an essential step in the BIM process.

Before a designer even begins, reality capture of as-built conditions can give the model the most important information when a project involves an existing structure or site, as it will in most cases.

This is the summary, which is straightforward: scan-to-BIM is the process of digitally capturing a physical area or site as laser scan data, which is then used for the creation, development, and maintenance of a BIM model.