The rapid evolution of the AEC sector has witnessed various technological developments, accelerating the design and construction process for AEC professionals. Building Information Modeling (BIM) is one such process that involves digital representation of a built form, leading to accurate and seamless results on-site.

As much as it simplifies the designing and construction work, it brings unique challenges to the table with unstructured data and processes that result in cost and time overruns. A clear understanding of how much detail and what geometry level is required significantly impacts the process, saving time and costs.

In the realm of Scan to BIM projects, there’s often a common misconception that Level of Detail (LOD) and Project Scope are one and the same.

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What is the Level of Development (LOD) in Scan to BIM?

Level of development is a set of standards that defines the different stages of project development within BIM and provides the AEC professionals the power to document and describe the BIM content effectively and clearly.

The LOD is an industry standard that helps verify the reliability of information associated with components of the project model.

The LOD requirements also define the measure of service level required to develop the project model. BIM modeling services use LOD to enhance 3D BIM models using a numerical lexicon, facilitating better understanding among stakeholders of all disciplines.

Every project has a reusable checklist to verify various components, and LOD can be integrated into the list by assigning an LOD status attribute to the components on the list. Attaching a LOD status will provide certainty about the quality of information at a given point, enhancing the final project outcome.

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AIA digital practice documents guide defines various Levels of Development for using Revit BIM modeling services as discussed below:

LOD 100 — Concept Design
LOD 200 — Schematic Design
LOD 300 — Design Development
LOD 350 — Construction Documentation
LOD 400 — Fabrication & Assembly
LOD 500 — As-Built

What is the Scope of Work in Scan to BIM?

Scope of Work is a list composed of activities and obligations stated in a contractual document that every contractor, sub-contractor, supplier, and other site member is compelled to follow.

Be it any building type, all project stakeholders are usually inclined towards defining a clear scope of work with all major project requirements enlisted in detail.

The document includes what are the necessary tasks during project execution and who is responsible for completing them. Each worker is assigned a set of responsibilities and the expected completion time, facilitating a seamless construction process.

Original Source : LOD and Project Scope in Scan to BIM

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