Levels of Definition Explained | The B1M

From the creator

When creating an information model as part of the BIM process, you wouldn’t expect to have all your data collated right from day one of a project… would you? In this video, Tom Payne, Co-Founder of The B1M, explains how Levels of Definition clarify the different amounts of data that need to be available at each stage of a project. A building information model contains both graphical and non-graphical information, accurately linked and clearly structured. As stages progress and proposals develop, the graphical and non-graphical data builds in a shared digital space, known as a Common Data Environment (CDE). The different amounts of data are termed Levels of Definition. The amount of non-graphical information developed for a given stage is termed “Level of Information” or LOI and the amount of graphical information developed is termed “Level of Detail” or LOD. Both form part of the overall umbrella term; “Level of Definition”. The British Standard guidance document PAS 1192-2 details the typical requirements for each Level of Definition over a project’s lifecycle. These align with the project work stages. It explains what the information model can be relied upon for at each stage – such as co-ordination activities, logistics planning, programming, cost-planning – the expected outputs, and the required detail within the 3D representations. It’s important that the expected minimum levels of definition for each work stage are made clear from the outset of a project before y

Published 2015-07-29 · Watch on YouTube ↗
Availability and playback restrictions are controlled by the original channel.