Virtually all architectural drafting is now done with the use of computers. Computer drafting, modeling, and renedering progams are taught extensively in schools of architecture, and where once the odd computer coursee was novel anomaly, the situation is now reversed: Hand drafting is taught, but often as thought it were Latin (a good language to learn, but one that won’t come up after graduation). For many architects of all ages, even those comfortable with computers, it is inconconceivable to imagine designing without also drawing or sketching by hand. Others though, who learn to draft by hand in school, will never use these skills in an office.
Computers are arguably a young person’s domain, and understandably, many architects tend to be most comfortable working in the manner in which they were trained. The dizzing speed of advances in computer technology has effectively collapsed generations of architects into exponentially shorter time spans. The isue is not whether a designer has computer skills, but which of an ever-growing list of cutting-edge programs he or she has mastered; This situation can be awkward in a profession known for it slow reaction times, but architecture is becomming accustomed to such growing pains, and keeping up with the times is imperative for most practices to stay in business.
Despite their omniprecense and versatily in document production, computer drafting programs cannot escape the fundamental fact that they are essentially reproducing the actions and effects of hand drafting. Parametric modeling pushes such production into a completly new domination with programs like Revit, * a three-dimensional Parametric Building Information Modeler (3DPBIM) that employs a parametric change engine to automatically coordinate changes made anywhere-in model vieuws or drawing sheets, schedules, sections, or plans. Standard two-dimensional CAD designs are object driven, meaning that if the object is changed, the dimension will change. By contrast, parametric modeling designs are dimension driven, so changing the dimension will change the object.
Projects using 3DPBIM work with models rather than geometry; every building element has three-dimensional qualities, regardless of how it will be printed; With parametric building elements, a wall exists only once (instead being drawn seperatly in plan, section, and elevation) and has encoded it everything about its identity, such as height, thickness, type of construction, fire resistance, and relationship to other elements.
All drawings in a set are produced from the same parametric building model, and updates of the model will result in updates to reflected views and schedules. This eliminates both the time-consuming process of coordinating changes as they ripple through the drawing set and the possibility for error and omission that accompanies such coordination.