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       #Post#: 177--------------------------------------------------
       Best practices for model set-up
       By: Erik_P Date: May 10, 2017, 2:30 pm
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       Found this on MT Hojgaard's website - simple yet effective.
       Could almost replace most PxPs found today  ;D
       gotta lov the openness and willingness to share!
  HTML http://mth.com/Processes/Building-Information-Modeling/Good-Building-Information-Modelling-Practices-with-12-simple-rules.aspx
       1. The model consists of objects
       The Building Information Model consists of objects that
       represent building components. Each object represents one and
       only one building component. No generic objects or
       models-in-place may be used.
       2. Identical coordinate system, modular grid and reference
       points in all models
       All project models without exception must be based on one and
       only one shared coordinate system for X and Y coordinates, and
       one and only one approved levels system for the Z axis. Rotation
       to true north must also be identical for all project models. The
       purpose is to facilitate the generation of shared models based
       on the many different discipline models.
       3. Objects must be used for their purpose
       BIM models are built from objects that represent building
       components, and the objects must be used for their
       purpose/function only. This means that, for instance, wall
       objects may be used only for walls and not for the modelling of
       small decks or beams. This principle applies to all objects.
       4. No object overlap
       The geometry of the different building components must not take
       up the same space. Models must be coordinated so as to eliminate
       object overlap. Nor may there be any duplicate objects on top of
       each other.
       5. Not different object types for the same purpose
       Objects with the same operation (function/purpose) must be
       represented by one and the same type.
       6. Consistent object naming
       First and foremost, it is important to ensure consistency in the
       naming of objects by using an SfB, BIM7AA or other
       classification code. At MT Højgaard we use an object naming
       standard. See MT Højgaard’s CAD_BIM Manual for more details.
       Object naming data must be typed in one data field for all
       building components (such as Typemark) and must not be entered
       in different fields.
       7. Drawings are extracts from the models
       Drawings should be retrieved from the model. It is only natural
       that there are details in 2D. But 2D drawings may not contradict
       the 3D model. Details are made directly and preferably on the
       basis of the 3D model. For instance, a door should not be
       visible only in a 2D model, or conversely, only in the 3D model.
       The scope of information not being available in the model must
       be specified with reference to the ICT appendix to the
       conditional consultancy agreement.
       8. Models have properties
       Models have properties (relevant data added at building
       component level) which are to follow cross-disciplinary
       consistent naming practices. Naming and necessary properties are
       defined as a part of the VDC deliverables.
       9. The model is divided for production
       For example, pillars are divided according to floors, decks are
       divided into components or cast sections, but the method applies
       to all building components. Waste or different/deviating margins
       are not taken into consideration and should be accounted for
       elsewhere, for instance in the description.
       10. Objects are connected to the right floor
       Objects that represent building components are connected to the
       floor they belong to and thus indicate the specific and not an
       arbitrary location. Moreover, objects are controlled by an
       off-set.
       11. The model has space objects with information
       The model contains meaningful ”rooms” or ”spaces” which
       represent rooms and zones in the model. These objects must
       contain consistent information about room type and/or function
       as well as numbering and any basic information about the defined
       building components such as surface areas of the different types
       of building components and their surface materials.
       12. Objects have classification codes
       Each object has a classification code as a property. The code
       must be represented in an approved system which can contain all
       building components in the relevant project. It must also be
       possible to see the code in the project bill of quantities and
       in descriptions.
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