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.
3. Redline markup drawing
Using electronic redline markups, CAD users can quickly collaborate with others and share files for online working.
Numerous more capabilities in AutoCAD enable designers to share files online and facilitate online communication while tracking the workflow.
They are the perfect instrument for coordinating the review process with many stakeholders, such as structural engineers, contractors, and MEP Designers, in an efficient manner.
Project stakeholders can readily communicate with one another by making comments, interpretations, and descriptions in annotated design drawings.
When detecting and resolving clashes between building elements, they are useful in identifying regions of conflict. This reduces work interruptions, cost escalations, and streamlines the building workflow.
4. LOD 500
For maintenance and operations, elements are modelled as built assemblies. Besides from being actual and exact in terms of size, shape, location, amount, and orientation, modelled elements also have non-geometric information associated to them.
The post-construction as-built stage of a project is LOD 500. Any project's initial cost stage comes to an end here. towards the end of the 500 level. The facility manager of the building receives the model.
The integration of 400 level fabrication model data into the 300-level model is frequently required when creating a 500-level model.
The model will include all building elements at LOD 500. They will be geometrically correct while displaying minimal fabrication level detailing.
Objects will include their actual record costs (data), purchase documents (link), commissioning data (link), maintenance needs (link), object-specific data (such as fan CFM), and any additional data pertinent to the building's life cycle management.