Digital Building

Introduction

This document is an appendix to the Luxembourg BIM Application Guide. It will be used to define the Information Exchange Requirements (EIR) to be met during the project. It is an evolving working document that will be updated in agreement with the CRTI-B working groups. The proposed levels of detail are in no way prescriptive: each user is free to appropriate and modify them as they see fit for each project. Any updates to this document will be posted on www.digitalbuilding.lu – sign up for the site’s newsletter!

Until version 1.1, this document was structured on the basis of the Uniformat II 2010 classification. This principle has been abandoned in the new versions. Sorting will be based on object names. Each of these objects will then be associated with several classifications (initially Uniformat II and DIN 276).

For each building element classified according to Uniformat 2 (level 3), you must define :

delivery milestones (project phases + intermediate milestones)
GID detail levels expected at each milestone
the person(s) responsible for delivering the expected information

For around half of the elements in this classification, a reference “GID sheet” has been created to give you the “common” levels of Geometry, Information and Documentation to be achieved at each phase of the project. The GID sheets associate the elements to be modeled with their IFC 2X3 (from vesion 1.2) and equivalent IFC 4 class (see http://www.buildingsmart-tech.org/ifc/IFC4/final/html/).

The GID sheets are the result of ongoing reflection and will evolve in line with feedback from the industry. They are intended to serve as a reference, but in no way have any normative value.

The different levels of Geometry, Information and Documentation are defined below.

For Geometry :

Level 100 is used to obtain an “as-designed – summary” model to validate initial conceptual choices.
Level 200 is used to obtain an “as-designed – detailed” model to validate the project as a whole.
Level 300 is used to obtain an “as-built” model in order to submit the project to tender.
Level 400 is used to obtain an “as-built” model, particularly in the case of prefabricated elements or detailed construction elements.
Level 500 is used to obtain an “as-operated” model that includes building modifications during operation

For information :

Levels 10 and 20 are the information needed to draw up the various technical studies during the design phase (10 = summary, 20 = detailed).
Level 30 enables you to submit a call for tenders, providing bidders with all the information they need to propose suitable products and work.
Level 40 provides actual information on the products and work involved.
Level 50 provides all maintenance-related information, including the reporting of in situ measurements, where necessary.

For Documentation :

Levels 1 to 5 reflect the gradual composition of the project’s corpus of documentation, from the first schematic drawings to the detailed execution and technical data sheets.

The xlsx v1.0 and v1.1 files can be downloaded from this page (bottom of page).

You can also browse these files via the “Interoperability Guide” (V1.2 of the GID sheets) and download version 1.2. Navigation is by type of constructive object.