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Category: Theory

3June2019

Comparing building classification systems II – Structure

June 3, 2019Written By Donatas Aksomitas

As a step towards understanding the advantages and disadvantages of the most popular building classification systems, let’s look at how they are structured. OmniClass, used in AEC in North America, has 15 tables on varied facets of construction information. Uniclass 2015, the U.K. building industry classification system, has 10 tables.…

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21May2019

Comparing classification systems I – The 2 Types

May 21, 2019Written By Donatas Aksomitas

Designers often wonder which digital building classification to use in projects. Which is best? This is in fact a key question for the smooth exchange of information among a BIM project’s participants over the building’s entire life. Let me offer some context for the choice. This first post describes the…

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31August2018

The ‘Dimensions’ class of BIM object properties

August 31, 2018August 31, 2018Written By Donatas Aksomitas

Let’s look at the “Dimensions” class of BIM object property names in my proposed classification system. Like the crucial “Identification” property class, it should make it much easier to define your information needs and communicate those needs to others – with total clarity. What you have is a standardized list…

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31October2017

The ‘Identification’ class of BIM object properties

October 31, 2017October 31, 2017Written By Donatas Aksomitas

Here’s a look at the “Identification” class in the BIMAXON classification system for BIM object property names. This is in fact the most important class, since every BIM actor needs Identification properties for every use of a model. So the gains from standardization here are very big. In presenting 1st-level…

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15April2017

BIM object property names: 1st-level classes (and their usefulness)

April 15, 2017Written By Donatas Aksomitas

In my last post about the urgent need to standardize BIM element properties, I promised to help do that. Here I begin to present the classification system for property names that I’m developing. I list my proposed 1st (entry) level of classes. Then I give an example of how they…

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13March2017

BIM workflow using SOI and GR instead of LOD. PART 1.

March 13, 2017Written By Donatas Aksomitas

In this post, let’s look at some of the workflow implications of my proposed SOI approach to BIM data management, with the use of GR levels instead of LOD, by walking through a simple project to build a reinforced concrete column. 1. First we need to clarify the overall information-exchange…

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8March2017

Instead of LOD: The GR approach to BIM object detail

March 8, 2017Written By Donatas Aksomitas

My last post introduced the notion of a BIM object’s GR or “level of detailed geometry in its 3D graphical representation.” Let me explain more, to clarify the advantages over LOD that the GR approach to levels of detailing offers in terms of both efficiency and data usefulness. What’s of…

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9February2017

SOI basics: Stages, Uses, LOD and Drop Points in light of BIM’s purpose

February 9, 2017Written By Donatas Aksomitas

To better understand the set-of-information (SOI) approach to BIM data management I’m proposing, let’s review some key workflow notions in light of the purpose for which BIM exists. The purpose of BIM, in my view, is “to give each actor just the information they need at just the right time throughout a…

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17January2017

“SOI” – a potential revolution in BIM data management

January 17, 2017July 6, 2019Written By Donatas Aksomitas

In my last post I described how the standard LOD/LOI methodology is causing information overload in BIM and slowing workflows. Now I want to outline a new approach which has the potential to resolve these problems and improve life for all BIM participants. I call it the “Set of Information”…

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5January2017

LOD is wasting our time and holding BIM back

January 5, 2017July 6, 2019Written By Donatas Aksomitas

Everyone with an interest in BIM has struggled with LOD. Not just with the term’s subtleties of meaning and inconsistent use: “Does LOD here mean ‘Levels of Definition’ or ‘Level of Development’ or ‘Level of Detail’, and how does it differ from ‘Level of Information’?” But also with the practical…

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BEP BIM BIM classification BIM Execution Plan BIM LOD BIM Standards EIR Level Of Definition Level Of Detail Level Of Information LOI

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