Level of Development LOD - Revision history

Editor at 10:31, 30 December 2025

2025-12-30T10:31:38Z

← Older revision		Revision as of 10:31, 30 December 2025
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	The BIM forum has contributed to interpreting the six levels of this framework for building product manufacturers and fabricators in particular - including plumbing, electrical, foundation, roofing, etc. The purpose of this is to foster better collaboration during the design and construction process.		The BIM forum has contributed to interpreting the six levels of this framework for building product manufacturers and fabricators in particular - including plumbing, electrical, foundation, roofing, etc. The purpose of this is to foster better collaboration during the design and construction process.

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

		+	* A Comprehensive Guide to Choose the Right LOD for Your Scan to BIM Projects
	* American Institute of Architects AIA.		* American Institute of Architects AIA.
	* BIM guidelines around the world.		* BIM guidelines around the world.
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	* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”		* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:~~BIM~~]] [[Category:~~Standards_/_measurements~~]] [[Category:~~Construction_management~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Construction_management]] [[Category:BIM]]

Editor: Reverted edits by Monarch (talk) to last revision by Designing Buildings

2023-06-09T06:54:34Z

Reverted edits by Monarch (talk) to last revision by Designing Buildings

← Older revision		Revision as of 06:54, 9 June 2023
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	= Six stages of LOD =		= Six stages of LOD =

−	Ranging from LOD 100 to ~~[https://www.monarch-innovation.com/bim-level-of-development-lod-300-350-400-500~~ LOD 500], the LOD framework defines the extent of design detailing in the BIM model for each component.	+	Ranging from LOD 100 to LOD 500, the LOD framework defines the extent of design detailing in the BIM model for each component.

	The six LOD stages are:		The six LOD stages are:
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	* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”		* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:~~Standards_/_measurements~~]] [[Category:~~Construction_management~~]] [[Category:~~BIM~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:BIM]] [[Category:Standards_/_measurements]] [[Category:Construction_management]]

Monarch at 12:55, 31 May 2023

2023-05-31T12:55:35Z

← Older revision		Revision as of 12:55, 31 May 2023
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	= Six stages of LOD =		= Six stages of LOD =

−	Ranging from LOD 100 to LOD 500, the LOD framework defines the extent of design detailing in the BIM model for each component.	+	Ranging from LOD 100 to [https://www.monarch-innovation.com/bim-level-of-development-lod-300-350-400-500 LOD 500], the LOD framework defines the extent of design detailing in the BIM model for each component.

	The six LOD stages are:		The six LOD stages are:
Line 50:		Line 50:
	* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”		* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”

−	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:~~BIM~~]] [[Category:~~Standards_/_measurements~~]] [[Category:~~Construction_management~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Construction_management]] [[Category:BIM]]

Designing Buildings at 08:33, 21 April 2021

2021-04-21T08:33:18Z

← Older revision		Revision as of 08:33, 21 April 2021
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	= The Origin of LOD =		= The Origin of LOD =

−	The LOD framework was formally established by the American Institute of Architects (AIA) in 2008. Further development has been undertaken by the ~~American~~ General Contractors (AGC).	+	The LOD framework was formally established by the American Institute of Architects (AIA) in 2008. Further development has been undertaken by the Associated General Contractors of America (AGC).

	However, LOD existed prior to the AIA’s formalised introduction. An early variation of the concept was present in construction analysis software that linked digital models to project costs. Introduced by Vico Software (now part of Trimble), a Model Progression Specification (MPS) was created in order to coordinate consistent BIM model data and associated information.		However, LOD existed prior to the AIA’s formalised introduction. An early variation of the concept was present in construction analysis software that linked digital models to project costs. Introduced by Vico Software (now part of Trimble), a Model Progression Specification (MPS) was created in order to coordinate consistent BIM model data and associated information.

Designing Buildings at 08:30, 21 April 2021

2021-04-21T08:30:52Z

← Older revision		Revision as of 08:30, 21 April 2021
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	= Introduction =		= Introduction =

−	~~The~~ Level of Development (LOD) ~~is a reference that~~ enables practitioners in the architecture, engineering and construction (AEC) sector to clearly ~~communicate reliable~~ Building Information Models (BIMs) throughout the design and construction process.	+	Level of Development (LOD) enables practitioners in the architecture, engineering and construction (AEC) sector to clearly describe Building Information Models (BIMs) throughout the design and construction process.

	= The Origin of LOD =		= The Origin of LOD =

−	The LOD framework was formally established by the American Institute of Architects (AIA) in 2008. Further development ~~of LOD~~ has been undertaken by the American General Contractors (AGC).	+	The LOD framework was formally established by the American Institute of Architects (AIA) in 2008. Further development has been undertaken by the American General Contractors (AGC).

	However, LOD existed prior to the AIA’s formalised introduction. An early variation of the concept was present in construction analysis software that linked digital models to project costs. Introduced by Vico Software (now part of Trimble), a Model Progression Specification (MPS) was created in order to coordinate consistent BIM model data and associated information.		However, LOD existed prior to the AIA’s formalised introduction. An early variation of the concept was present in construction analysis software that linked digital models to project costs. Introduced by Vico Software (now part of Trimble), a Model Progression Specification (MPS) was created in order to coordinate consistent BIM model data and associated information.
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	= LOD or LOd? =		= LOD or LOd? =

−	In this early instance, LOD was defined as Level of Detail. However, the acronym LOD (in all upper case letters) has since become associated with Level of Development while LOd is an indication of the original term, Level of Detail.	+	In this early instance, LOD was defined as Level of Detail. However, the acronym LOD (in all upper case letters) has since become associated with Level of Development (in the USA - see level of detail for more information about the UK) while LOd is an indication of the original term, Level of Detail.

	In the AIA's G202-2013 Building Information Modelling Protocol Form, LOD refers to the Level of Development required for model element content. LOD is the degree to which the components’ specification, geometry, and attached information have been thought through – or the degree to which project team members can depend on the information when using the model.		In the AIA's G202-2013 Building Information Modelling Protocol Form, LOD refers to the Level of Development required for model element content. LOD is the degree to which the components’ specification, geometry, and attached information have been thought through – or the degree to which project team members can depend on the information when using the model.
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	= Six stages of LOD =		= Six stages of LOD =

−	~~LOD is meant to formalise the use of the LOD framework as an efficient and collaborative communication tool.~~ Ranging from LOD 100 to LOD 500, the framework defines the ~~gravity~~ of design detailing in the BIM model for each component.	+	Ranging from LOD 100 to LOD 500, the LOD framework defines the extent of design detailing in the BIM model for each component.

−	The six LOD stages ~~include~~:	+	The six LOD stages are:

	* LOD 100 (conceptual design) - At this pre-design stage, elements are a generic representation, giving the viewer a basic idea of existence but no idea about size, exact shape or orientation. The model consists of 2D symbols and masses to signify the existence of an element.		* LOD 100 (conceptual design) - At this pre-design stage, elements are a generic representation, giving the viewer a basic idea of existence but no idea about size, exact shape or orientation. The model consists of 2D symbols and masses to signify the existence of an element.
	* LOD 200 (schematic design) - A representation of a partially defined idea of elements’ size, location in the facility etc. but with much rough approximation. .		* LOD 200 (schematic design) - A representation of a partially defined idea of elements’ size, location in the facility etc. but with much rough approximation. .
−	* LOD 300 (~~modeled~~ as design-specified) - This shows the specific geometric size and exact dimensions of the element and orientation, location, and quantity used across the facility.	+	* LOD 300 (modelled as design-specified) - This shows the specific geometric size and exact dimensions of the element and orientation, location, and quantity used across the facility.
−	* LOD 350 (~~modeled~~ as actual size) - A revision of LOD 300 depicting precise information about how the component will be connected to ~~the~~ nearby elements. This is usually the minimum requirement of construction firms.	+	* LOD 350 (modelled as actual size) - A revision of LOD 300 depicting precise information about how the component will be connected to nearby elements. This is usually the minimum requirement of construction firms.
−	* LOD 400 (supplementary components added) - Sufficient information to fabricate the component with individual holes ~~and~~ weld sizes.	+	* LOD 400 (supplementary components added) - Sufficient information to fabricate the component with individual holes, weld sizes and so on.
−	* LOD 500 (final design) - The fully developed and functional model, showing the operational geometry of the component and the stage of installation of the component with ~~duly~~ verified information such as manufacturer details, dates, ~~part~~, and model number etc.	+	* LOD 500 (final design) - The fully developed and functional model, showing the operational geometry of the component and the stage of installation of the component with verified information such as manufacturer details, dates, parts, and model number etc.

	The BIM forum has contributed to interpreting the six levels of this framework for building product manufacturers and fabricators in particular - including plumbing, electrical, foundation, roofing, etc. The purpose of this is to foster better collaboration during the design and construction process.		The BIM forum has contributed to interpreting the six levels of this framework for building product manufacturers and fabricators in particular - including plumbing, electrical, foundation, roofing, etc. The purpose of this is to foster better collaboration during the design and construction process.

Editor at 16:22, 20 April 2021

2021-04-20T16:22:36Z

← Older revision		Revision as of 16:22, 20 April 2021
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	In this early instance, LOD was defined as Level of Detail. However, the acronym LOD (in all upper case letters) has since become associated with Level of Development while LOd is an indication of the original term, Level of Detail.		In this early instance, LOD was defined as Level of Detail. However, the acronym LOD (in all upper case letters) has since become associated with Level of Development while LOd is an indication of the original term, Level of Detail.

−	LOD is the degree to which the components’ specification, geometry, and attached information have been thought through – the degree to which project team members ~~may~~ depend on the information when using the model. LOd is ~~actually what~~ proportion of detail is enclosed within the model element.	+	In the AIA's G202-2013 Building Information Modelling Protocol Form, LOD refers to the Level of Development required for model element content. LOD is the degree to which the components’ specification, geometry, and attached information have been thought through – or the degree to which project team members can depend on the information when using the model.
		+
		+	On the other hand, LOd is associated with the proportion of detail enclosed within the model element. In other words, a visually detailed element might in fact be generic, and despite its appearance, it might be at a low level of design development.

	In the article, “[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”, Jim Reis, Managing Director of SysQue and Building Data at Trimble notes that LOD (meaning Level of Development) is the most commonly used reference. He adds that as the element or model becomes more developed (LOD), more detail (LOd) subsequently becomes available.		In the article, “[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”, Jim Reis, Managing Director of SysQue and Building Data at Trimble notes that LOD (meaning Level of Development) is the most commonly used reference. He adds that as the element or model becomes more developed (LOD), more detail (LOd) subsequently becomes available.

Editor at 16:09, 20 April 2021

2021-04-20T16:09:00Z

← Older revision		Revision as of 16:09, 20 April 2021
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* American Institute of Architects AIA.
		+	* BIM guidelines around the world.
		+	* BIM resources.
		+	* Design drawings.
		+	* Glossary of BIM Terms.
	* Level of detail for BIM.		* Level of detail for BIM.
	* LOD: Linguistics Needs of the Construction Industry.		* LOD: Linguistics Needs of the Construction Industry.

Editor at 16:04, 20 April 2021

2021-04-20T16:04:15Z

← Older revision		Revision as of 16:04, 20 April 2021
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	* Level of detail for BIM.		* Level of detail for BIM.
		+	* LOD: Linguistics Needs of the Construction Industry.

	= External resources =		= External resources =

−	Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”	+	* Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Software]] [[Category:DCN_Standard]] [[Category:BIM]] [[Category:Standards_/_measurements]] [[Category:Construction_management]]

Editor: Created page with "= Introduction = The Level of Development (LOD) is a reference that enables practitioners in the architecture, engineering and construction (AEC) sector to clearly communicate r..."

2021-04-20T16:01:57Z

Created page with "= Introduction = The Level of Development (LOD) is a reference that enables practitioners in the architecture, engineering and construction (AEC) sector to clearly communicate r..."

New page

= Introduction =

The Level of Development (LOD) is a reference that enables practitioners in the architecture, engineering and construction (AEC) sector to clearly communicate reliable Building Information Models (BIMs) throughout the design and construction process.

= The Origin of LOD =

The LOD framework was formally established by the American Institute of Architects (AIA) in 2008. Further development of LOD has been undertaken by the American General Contractors (AGC).

However, LOD existed prior to the AIA’s formalised introduction. An early variation of the concept was present in construction analysis software that linked digital models to project costs. Introduced by Vico Software (now part of Trimble), a Model Progression Specification (MPS) was created in order to coordinate consistent BIM model data and associated information.

= LOD or LOd? =

In this early instance, LOD was defined as Level of Detail. However, the acronym LOD (in all upper case letters) has since become associated with Level of Development while LOd is an indication of the original term, Level of Detail.

LOD is the degree to which the components’ specification, geometry, and attached information have been thought through – the degree to which project team members may depend on the information when using the model. LOd is actually what proportion of detail is enclosed within the model element.

In the article, “[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”, Jim Reis, Managing Director of SysQue and Building Data at Trimble notes that LOD (meaning Level of Development) is the most commonly used reference. He adds that as the element or model becomes more developed (LOD), more detail (LOd) subsequently becomes available.

Reis explains that LOD is the depth of thinking applied to the model; thus, it is associated with the reliability of the model. Example: Whether the pipes in a model have been engineered and the permanence of their placement. By contrast, Reis says LOd is associated with the way a model looks. The level of detail refers to the input of the model. Example: Specific shapes and measurable location of steel pipes in a model.

= Six stages of LOD =

LOD is meant to formalise the use of the LOD framework as an efficient and collaborative communication tool. Ranging from LOD 100 to LOD 500, the framework defines the gravity of design detailing in the BIM model for each component.

The six LOD stages include:

* LOD 100 (conceptual design) - At this pre-design stage, elements are a generic representation, giving the viewer a basic idea of existence but no idea about size, exact shape or orientation. The model consists of 2D symbols and masses to signify the existence of an element.
* LOD 200 (schematic design) - A representation of a partially defined idea of elements’ size, location in the facility etc. but with much rough approximation. .
* LOD 300 (modeled as design-specified) - This shows the specific geometric size and exact dimensions of the element and orientation, location, and quantity used across the facility.
* LOD 350 (modeled as actual size) - A revision of LOD 300 depicting precise information about how the component will be connected to the nearby elements. This is usually the minimum requirement of construction firms.
* LOD 400 (supplementary components added) - Sufficient information to fabricate the component with individual holes and weld sizes.
* LOD 500 (final design) - The fully developed and functional model, showing the operational geometry of the component and the stage of installation of the component with duly verified information such as manufacturer details, dates, part, and model number etc.

The BIM forum has contributed to interpreting the six levels of this framework for building product manufacturers and fabricators in particular - including plumbing, electrical, foundation, roofing, etc. The purpose of this is to foster better collaboration during the design and construction process.

= Related articles on Designing Buildings Wiki =

* Level of detail for BIM.

= External resources =

Jim Reis, "[https://constructible.trimble.com/construction-industry/the-lod-on-the-lod The LOD on the LOD]”