Much is currently talked about regarding the different compliance levels associated with Building Information Management (BIM). Here Wienerberger, a leader in the field of BIM, guides you through a simple explanation of what each BIM level entails.
BIM level 0: This is entry level BIM where the processes and principles of BIM are used but without a 3D element.
BIM level 1: Level 1 BIM demonstrates a move from 2D to 3D and indicates the expected progression a stakeholder must undertake in order to reach level 2.
To be BIM level 1 compliant a user must employ CAD and also follow the guidelines from both BS1192 and PAS11192. By utilizing the associated roles and checking techniques users can still deliver savings and efficiencies without the other obvious benefits of 3D CAD, but also prepare a foundation to move into level 3 BIM.
At the top end of level 1 3D CAD is used and when employed in conjunction with the other processes, a user is ready for level 2 BIM.
BIM level 2: At level 2 the aim is to encourage deeper collaboration between stakeholders while ensuring information is highly accurate. Through the use of a sharing process such as a CDE (Common Data Environment), each level of the chain will be responsible for the creation and accuracy of each BIM. When brought together these form what is known as a federated model.
The components of a federated model are:
AIM Architects Information Model
SIM Structural Information Model
FIM Facilities Information Model
BSIM Building Services Information Model
BRIM Bridging Information Model
Common naming mechanism for files (BS 1192:2007)
In order to share information correctly there needs to be a common naming mechanism for files. This is outlined in BS 1192:2007 and is once again linked to the wider BIM process.
The classification system is extremely important as it represents the ability to define a given object and ensure all stakeholders understand that the term is key to the success of the process. The system currently employed in construction is known as Unicode, but a new version is being developed specifically for BIM.
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