#048 - BIM MATURITY LEVELS

This post just wants to illustrate the different levels, from 0 to 3, that broadly define the progressive BIM (Building Information Model) process. There is a certain level of uncertainty surrounding BIM and its meaning but we believe we made the point down here:

Level 0

No coordination across disciplines. Only 2D CAD tools are used to produce documentation.

Level 1

There is still no collaboration between different disciplines. 3D CAD tools used for concept works and 2D CAD tools for production. Standards data structure throughout the project is adopted. Common data environment created to share information electronically.

Level 2

All disciplines are coordinated, design information is shared through a common environment. Each discipline is working on its own 3D CAD project model, information is exchange between different parties in a combined model. Common file format is used (basically same software).

Level 3

There is full collaboration between all disciplines. A unique shared project model is used and all parties can access and modify it. There are advantages because it removes the risk for conflicting information, on the other hand this level of coordination requires a huge efforts from all disciplines that unwillingly have to disclose too many information at earlier stages.

But it is not finish yet, we also have these still vague levels that worth to mention:

Level 4

Analyse time

Level 5

Cost management

Level 6

Facilities management

For the post we have been inspired by “

The Bew-Richards BIM Maturity Model

”, instead Mr D. Tail has had his controversial view, as usual.

Also more info about BIM in our previous

post

#047 - BIM – BUILDING INFORMATION MODELLING

BIM is an acronym describing digital design, construction and facilities management in the construction industry. "B" stands for building of course, "I" for information and "M" is not clear yet but it may be interpreted as Modelling or Management depending if you are designing or managing the project.

However the National Institute of Building Sciences in the United States put some light on this subject stating that BIM is:

“A digital representation of physical and functional characteristics of a facility… and a shared knowledge resource for information about a facility forming a reliable basis for decisions during its life-cycle; defined as existing from earliest conception to demolition.”

As the above definition didn't help us at all, we decided to look through some RIBA publications. That was even more confusioning, we found out that anybody can say what they want about BIM.

On our side we put a lot of effort in pursuing the perfect BIM definition and now we are pretty confident in saying that BIM is a multidisciplinary approach to the design, construction e management of a building (or infrastructure). Various disciplines are involved in the design of a building, such as architects, structural engineers, mechanical and electrical engineers. All of them are working on the same digital model. In this way everyone involved must work and collaborate together with the same standards. If one discipline fail to deliver his package the team fail in delivering the project to the client.

All seem pretty amazing but, as Mr D. Tail is trying to explain us, the theory may be different from the practice. 

#044 - ENERGY EFFICIENCY RATING

The energy efficiency rating is a measure of the overall efficiency of a home. The higher the rating the more energy efficient the home is and the lower the fuel bills will be. This score is found on an Energy Performance Certificates (EPCs), a mandatory document, in England and Wells, which states the energy efficiency of the building when rent or sold.

This is a result of European Union Directive 2002/91/EC relating to the energy performance of buildings. The principle of this directive is to make energy use in buildings transparent by the issuing of a certificate showing the energy rating of a property, along with recommendations on how to improve efficiency.

As Mr D. Tail demonstrates, a Passive house has a high rating because it has an excellent level of insulation and airtightness.

On the contrary an old Victorian house, non-insulated with uncontrolled draughts that let air come in and out, show a low rating.

However we should not lose hope if we own an old house. Today the construction market offer plenty of products that help us to improve the building performance of a house to an acceptable level, even a Victorian house.

#043 - ARCHITECTURAL PROCUREMENT

In the construction environment the procurement is a mechanism which provides all the activities undertaken by a client to get a project built.

On this post we are looking on how the architectural services are procured. There are many procurement methods but all of them redirect to the following main activities:

1. Briefing and Assessment

2. Concept Design

3. Design Development

4. Constriction

5. Inspection and Evaluation

Mr D. Tail is helping us to understand this process.

Odd to say, but today this historical main client/architect relationship is infrequent. Unfortunately architecture is not any longer considered the core discipline of the construction process, on the contrary, for many it has become a superfluous ornament. More posts will follow about this subject.