物体的LOD是指它在数字模型中的细节水平（几何体和数据）。

物体的LOD是指它在数字模型中的细节水平（几何体和数据）。

我们讲 “细节水平 “和 “发展水平”。后者表示数字模型的发展水平。也就是说，根据项目的进展，我们需要一个对象，根据计算、制造或操作的要求，或多或少地进化几何和数据。

很多组织已经研究了LOD，特别是尝试定义不同级别之间的界限，并发布了指南。例如

• > NATSPEC指南，澳大利亚国家 “BIM文件BIM和LOD”。查看完整的规范上。bim.natspec.org

• > AIA指南和出版物

在一些BIM招标中，可能会指定一个特定的LOD级别。

为了管理LOD，平台提供了几个功能。

• 定义一个几何体的LOD，由对象的创建者负责。
• 通过各种插件将一个LOD XXX的对象替换为LOD YYY的对象。
• 通过LOD级别搜索一个对象。

此外，通过协作的可能性，用户将被邀请通过添加不同的LOD版本来丰富一个对象，他们可能不得不创建不同的LOD版本来满足他们自己的要求。

The LOD of an object is its level of detail (geometry and data) in the digital model.

We talk of “Level of Detail” and “Level of Development“. The latter indicates the level of development of the digital model. That is to say that according to the progress of a project, we need an object with more or less evolved geometry and data, depending on calculation, manufacturing, or operation requirements.

Many organisations have looked at LODs, in particular to try and define limits between the various levels, and have issued guides. For example:

• > The NATSPEC guide, National Australian “BIM Paper BIM and LOD”. See complete specifications on: bim.natspec.org

• > AIA guide and publications

In some BIM calls for tenders, a specific LOD level may be specified.

To manage LODs, the platform offers several functionalities:

• Define the LOD of a geometry under the responsibility of the creator of the object.
• Replace an object with a LOD XXX by an object with LOD YYY via the various plugins.
• Search an object by its LOD level.

Furthermore, with collaborative possibilities, users shall be invited to enrich an object by adding different LOD versions they may have had to create to fulfil their own requirements.