BIM Solutions, BIM Services, Mô Hình Thông Tin Xây Dựng

BIM Solutions, BIM Services, Mô Hình Thông Tin Xây Dựng

cad and cam services

"We always put the quality above all else"

LOD is wasting our time and holding BIM back!


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 application of this labor‐intensive and often inefficient approach to managing BIM data.

The approach is, after all, mandated by the world’s many BIM standards (big complex documents which are nevertheless often incomplete and ambiguous for practitioners). It’s standard protocol. And it’s leading to information overload, confusion and workflow breakdowns.

BIM, since the notion emerged, was always about innovation for efficiency in the gathering, exchange and use of data in the AEC industries. What it’s become, however, is the unthinking accumulation of more and more data just to tick all the boxes in a policy document.

Take an example where we’ve decided to use LOD 200. I’ll do the geometry specified in the standards. But the gurus who wrote the standards say “non‐graphic information may also be attached.” So along with the geometry, I’ll put some information that’s important to me to the model, and my project partners will add information of their own. Later, at other LODs, others will add more information. And it’s never clear who should be responsible for what.

It’s a routine – the opposite of innovation. And it’s inefficient, because it gives no thought up front to how, when, by whom or even if any specific information will be used in the project at hand. Excess data is created: everyone gets all the information, though most only need a small part and some of it isn’t needed by anybody. Some is only needed by one participant for one short phase, but it stays in the model forever. Thus much of the huge pool of data is wasting human and system resources.

At times the process gets stuck. First, when real users come along, say a manufacturer or builder, they often discover the model, built to meet the standards, contains a lot of information they don’t need but is missing some information they do need. Then they try to figure out how to go around the standards to get what they need. Or they’re tempted to give up on BIM. Another case is when some participant in a project doesn’t work with BIM and the data‐gathering chain breaks down.

The problem is we aren’t thinking about who in real life needs what and when, in the current BIM project. Each participant needs different information, a very specific type and amount, at different specific moments in the project. A change of perspective on the process is needed.

General standards requiring all the information that could possibly be needed in any project of course generate excess information, and often miss things needed in real life. Plus, the more potential variants you consider, the bigger and more complex the standard descriptions get.

January 5, 2017, Written By Donatas Aksomitas​

Related news

Sasaki thiết kế khu đô thị sáng tạo cho Thành phố Hồ Chí Minh 07/01/2020
Sasaki thiết kế khu đô thị sáng tạo cho Thành phố Hồ Chí Minh
see more
The Olympic Gangneung Ice Arena built with Tekla BIM technology 31/07/2018
Tekla Structures was utilized for the design of Gangneung Ice Arena, the venue for figure skating and short track in PyeongChang Winter Olympic Games
see more
From BIM to CIM 25/07/2018
From BIM to CIM: why building and city information modelling are essential to the development of Smart Cities.
see more
Eiffel Tower Grand Site unveiled in 3D for the very first time thanks to BIM 19/07/2018
Autodesk unveiled the 3D model that will be used during the restoration of the Eiffel Tower grand site – all 2.4 square kilometers of it
see more
From point cloud to BIM 17/07/2018
Building Information Modelling (BIM) methodology is increasingly penetrating into building design. It will also lead to an inevitable increase in the ...
see more
5 BIM trends in the installation sector in 2017 11/06/2017
5 BIM trends in the installation sector in 2017. 1. Virtual Reality (VR) is at the verge of making a breakthrough at a professional level. An ...
see more
BIM for Railways Infrastructure Development 05/06/2017
European railway infrastructure construction and development faces a number of business as well as technological challenges in the modern era.
see more
How Industry 4.0 and BIM are Shaping the Future of the Construction Environment 07/05/2017
The construction industry is on the cusp of a new industrial age. The fourth industrial revolution, or ‘Industry 4.0’, will see construction ...
see more
Building Information Modelling - can it make good architecture even better? 04/05/2017
BIM is a powerful computer-based tool increasingly employed by architects, engineers and builders to design houses, townhouses, apartment buildings ...
see more
BIM is encouraged to apply in construction industry by The Government 07/02/2017
The Government encourages and creates conditions for relevant parties to apply BIM, implement solutions to improve productivity, quality and save ...
see more
Building Information Modeling - Top Benefits. 22/12/2016
Building Information Modeling - BIM is a great step in design, installation and maintenance over 40 years in construction industry.
see more
BIM in Viet Nam – The Advantages and Disadvantages 22/12/2016
The status of Building Information Modeling-BIM in Viet Nam. Currently, BIM is mostly deployed for the projects with complicated designs and...
see more