B-2 Group A Kaili Yue

The chapter 2 of BIM Handbook “BIM Tools and Parametric Modeling” talked about how the BIM works. BIM is one of the greatest software for engineers. It can be used to design 3D modelled objects with 2D drawn sections. In 1973 solid 3D shapes was created. It is a big step for BIM. The history of building modelling technology has a long time. Early 3D modelling was used in movies, design and eventually games. Compare the BIM 3D Modelling and Auto CAD, the big different is BIM 3D Modelling is able to consider the materials of the structure. Also BIM tool is able to estimate the price of the structures.

 The parameters and rules can show relate to other objects. The goal of BIM software is to make the complex structure simply.  The customers could easily to understand the building structure and the building 3D model looks like.

Current BIM design include services to specific tasks, also they provide a platform for managing the data within a model for different uses.  Actually the structure of an object instance defined within a parametric modelling system. The nodes and links in the graph classes with parameters of operations.

Not all the design tools are supported by BIM design. Those are

• ·        Generality of parametric relations. Ideally supporting full algebraic and trigonometric capabilities.
• ·        Support for condition branching and writing rules that can associate difference features to an object instance.
• ·        Providing links between objects and being able to make these attachments freely

• ·        Ability to extend existing parameters object classes, so that the existing object class can address new structures and behaviour not provided originally.

In summary, this chapter talked the differences between CAD systems and BIM design applications; the differences between BIM design applications and more general object-based; the differences between BIM design applications used in architectural and used in fabrication. BIM tools are very useful software for civil engineers. As a civil engineer I look forward to learn and improve the software in my career.

Reference:

Charles, Eastman, M. BIM Handbook : A Guide to Building Information Modeling for Owners, Managers, Designers, Engineers and Contractors. N.p.: Hoboken, NJ : Wiley. 2011, n.d. 31-98. Web. 20 Jan. 2015.

Comments:

To  Kevin Saldivar:

Very comprehensive summary. I agree BIM could cut back project costs and save money at almost every stage in the building process. It is a big step for engineers.


To Grigorios Papadourakis:


Interoperability was an important created. Very good job!!

To Zilong Xiao:

To compare CAD and BIM, BIM tools could easy to define some objects without any programming skills. That makes life easier. Really nice summary and some unique ideas. Good job!