What are BIM levels?

Two-dimensional or not two-dimensional? That's the question - at least, that's part of it. In this blog, we will look at the elements that define the standards for different levels of BIM maturity.

What is BIM? Why and where is it used?

BIM, or Building Information Management, is an intelligent, model-based process used by architects, contractors, and engineers to help design, build, and maintain buildings and infrastructure. A BIM model is a 3D digital plan that summarizes the physical and functional characteristics of both structural components and entire structures.

BIM can provide an indication of how materials work together in a design and help with everything from securing a purchase from clients to managing construction costs, building maintenance, and even demolition. One of the main benefits of BIM is the way it allows full collaboration between all project stakeholders to achieve more effective and efficient results. But by the term facility management, building information modeling (BIM) really comes into its own, allowing easy access to asset records and other vital delivery data.

In many countries such as the United Kingdom, Ireland, Australia, Japan, the United States and Brazil, BIM is already compulsory to some extent. And its benefits are clear. The construction markets where BIM adoption is lagging will no doubt soon follow suit.

BIM levels

This is where BIM levels come in.

Starting at levels 0 through 3, BIM levels denote degrees of "BIM maturity," which determines the ability of a construction supply chain to operate and exchange digital information. Think of BIM levels like the BIM scoring system; Higher scores indicate better collaboration in BIM.

Although there is some debate about exactly where the boundaries of the BIM levels lie, the following descriptions provide a widely accepted outline:

Level 0 BIM

Only 2D drafting (computer aided design) is used. Outputs are shared electronically or via hard copy. Basically, there is no exchange or collaboration of digital information.

Level 1 BIM

3D CAD is used for concept work. 2D CAD is used to draft legal approval documents and production information. Data is shared electronically through the CDE and is generally arranged by the contractor. To achieve BIM Level 1 compliance:

• Roles and responsibilities must be agreed upon

• Naming conventions must be adhered to

• Arrangements shall be made for the creation and maintenance of project specific codes and project spatial coordination

• CDE must be used

• An information hierarchy that supports CDE concepts must be agreed upon

Level 2 BIM

The UK standard for publicly funded construction projects, BIM Tier 2 Compliance Requirements was originally set out in PAS specification 1192 and has since been replaced by BS EN ISO 19650-1:2018.

PAS 1192 made it clear that information must be generated in an appropriate and timely format so that better decisions can be made during the design, construction and operation phases. To ensure that information is properly managed and validated, data must be submitted to the business owner at key stages. In general, Level 2 BIM compliance indicates a highly collaborative approach.

Level 3 BIM

Although this level is not yet fully defined, key measures to facilitate BIM level 3 have been identified and include:

• Create international open data standards to enable easy sharing of information across the entire market

• A contractual framework for BIM that ensures consistency, avoids confusion, and encourages open work and collaboration

• A collaborative culture that seeks to learn and share

• Training the client on BIM technologies and processes

• Drive growth and employment in technology and construction

Although BIM standards largely apply to public sector projects at present, it seems very likely that these standards will carry over to the private sector in the future. A couple of outstanding requirements with clear advantages (see below) and it becomes clear that contractors would be wise to embrace BIM now if they haven't already.

Choose Zutec

BIM offers a range of benefits to contractors, architects, and clients . With Zutec BIM, you can centralize your 3D models on a single cloud-based platform for seamless access and collaboration, avoiding third-party licensing costs. Forms can be accessed anytime and anywhere and is especially useful for asset records and delivery data.

And our modular approach to digital building software means that with Zutec, you only pay for the services you actually need.

Book a free trial.