Level of Development Specification - Version 2013 - For Building Information Models

Oct 23, 2026

Upload by Stanley

Level of Development Specification, Version 2013, provides a structured framework for defining and communicating the information content expected in Building Information Models (BIM). The document introduces LOD concepts, clarifies relationships between level of development and level of detail, and defines fundamental LOD terminology and caveats. It includes guidance on project-specific information, an updates and revision history section, and detailed substructure and shell definitions for BIM elements such as foundations, subgrade enclosures, slabs-on-grade, and superstructure components.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages125

Reading Time5 h 15 min

AccessFree to download

Contents

Acknowledgements

Level of Development (LOD) Specification Introduction

1 Overview

2 Background

3 Levels of Development

3.1 Level of Development vs. Level of Detail

4 LOD Definitions

4.1 Fundamental LOD Definitions

4.2 Caveats

4.3 Project-Specific Information

5 Updates of This Document

Revision History

A: SUBSTRUCTURE

A10 Foundations

A1010 – Standard Foundations

A1020 – Special Foundations

A20 Subgrade Enclosures

A2010 – Walls for Subgrade Enclosures

A40 Slabs-on-Grade

A4010 – Standard Slabs-on-Grade

A4020 – Structural Slabs-on-Grade

B: SHELL

B10 Superstructure

B1010 – Floor Construction

B1020 – Roof Construction

B1080 – Stairs

B20 Exterior Vertical Enclosures

B2010 – Exterior Walls

B2020 – Exterior Windows

20 13 LEVEL OF DEVELOPMENT SPECIFICATION August 22, 2013 3 0 5 0 0 0 0 0 0 0 0 Level of Development Specification Version: 2013 For Building Information Models Contents Contents ................................ ................................ ................................ ................................ ................................ ................................ ..... 2 Acknowledgements .................................................................................................................................................................................. 6 Level of Development (LOD) Specification Introduction ...................................................................................................................... 8 1 Overview ........................................................................................................................................................................................... 8 2 Background ...................................................................................................................................................................................... 8 3 Levels of Development .................................................................................................................................................................... 9 3.1 Level of Development vs. Level of Detail.............................................................................................................................. 9 4 LOD Definitions ................................................................................................................................................................................ 9 4.1 Fundamental LOD Definitions ............................................................................................................................................. 10 4.2 Caveats .................................................................................................................................................................................. 11 4.3 Project-Specific Information ................................................................................................................................................ 11 5 Updates of This Document ............................................................................................................................................................ 12 Revision History ....................................................................................................................................................................................... 12 A: SUBSTRUCTURE ............................................................................................................................................................................... 13 A10 Foundations .................................................................................................................................................................................. 13 A1010 – Standard Foundations ........................................................................................................................................................ 13 A1020 – Special Foundations........................................................................................................................................................... 15 A20 Subgrade Enclosures .................................................................................................................................................................... 16 A2010 – Walls for Subgrade Enclosures .......................................................................................................................................... 17 A40 Slabs-on-Grade ........................................................................................................

FAQs

What is the purpose of the Level of Development (LOD) Specification Version 2013?

It establishes definitions and guidance for specifying the information content expected in Building Information Models (BIM).

How does Level of Development relate to Level of Detail?

The document includes a dedicated section explaining the relationship between LOD and level of detail to avoid confusion in BIM communication.

What kinds of BIM elements are covered in the detailed LOD definitions?

It provides structured definitions for substructure and shell categories, including foundations, subgrade enclosures, slabs-on-grade, and superstructure and exterior components.

Oct 23, 2026

Upload by Stanley