2024年12月31日 · The Level of Development (LOD) Specification is a reference that enables practitioners in the AEC Industry to specify and articulate with a high level of clarity the content and reliability of Building Information Models (BIMs) at various stages in the design and construction process.

2025年1月3日 · Level of development (LOD) is a set of specifications that gives professionals in the AEC industry the power to document, articulate, and specify the content of BIM effectively and clearly. Serving as an industry standard, LOD defines the …

The Level of Development (LOD) Specification is a reference tool intended to improve the quality of communication among users of Building Information Models (BIMs) about the characteristics of elements in models. The LOD Specification expands upon the LOD

LOD标准是作为一个参考，它使 AEC行业 的从业人员能够在设计和施工过程的各个阶段明确规定和表达建筑信息模型（BIM）的内容和可靠性。 LOD标准采用了AIA为《AIA G202-2013建筑信息建模协议》中制定的基本LOD定义，由 CSI Uniformat 20102 组织。 它定义并说明了生命周期中不同阶段中各建筑专业系统的模型元素应具有的特征（characteristics of model elements）。 这种清晰的表达让模型设计人员定义他们的模型拥有可以依赖的标准，并允许下游用户清楚地了解他 …

BIM Level of Development (LOD) is an industry standard that defines how the 3D geometry of the building model can achieve different levels of refinement, is used as a measure of the service level required.

模型的细致程度，英文称为 Level of Details，也称为Level of Development。描述了一个BIM模型构件单元从最低级的近似概念化的程度发展到最高级的演示级精度的步骤。 LOD的定义可以用于两种途径：确定模型阶段输出…

2023年12月29日 · In the past 10 years the BIMForum LOD specification has helped countless projects and practitioners defining scope, qualities and expectations of models that are created and managed on construction projects.

2021年1月28日 · 以北京地方BIM标准 《民用建筑信息模型BIM设计基础标准》 中对LOD的定义来看【条文说明】作为BIM模型基本对象的构件，其深度应与模型深度等级的要求相一致，BIM设计较传统二维设计对硬件系统要求较高，构件创建中如细节表现过度，在项目模型中大量引入时会占用过多硬件资源，影响工作效率或增加设计单位的硬件投入，而构件深度不足，则影响项目模型的精度和信息含量，因此，应根据项目交付要求所规定的模型深度等级，确定构件创建或引入时 …

Levels of Development (LOD) refer to a standardized framework for defining the amount of detail and accuracy that should be included in a building information model (BIM) (US Site) at different stages of a project. The details in a building model grow more refined at each level.

The LOD sample model illustrates a model as it progresses through schematic design, design development, and construction document phases, with the objective of showing how LOD is affected at each milestone.