Not to disparage selling the value of these technologies as early as possible and to the right people, it just usually never goes further than that. Most commonly this is an animation to demonstrate skill and sophistication in front of a customer during the interview process. It is kind of the ultimate “BIM-washing” (still one of my favorite terms). Separating 4D Fact from 4D Fictionĩ0%+ of 4D going on in the industry is for show only. Very few examples exist where 4D is implemented in a way that improves communication and on-site efficiency. 4D construction simulation shows the objects and space needed during construction. I’d even say we may be missing more than half of the story.ģD coordination shows objects in their final installed position. So, what are we missing? If our ultimate effort is to better understand the construction site, and thus improve schedule accuracy and planning predictability, we aren’t usually coordinating the right thing. 3D coordination only tells part of the story. When virtual construction professionals coordinate 3D models, they are taking models representing the final installed position of all components from all trades. We are using a combination of Revit and Navisworks to visualize and animate these important factors in gaining benefit from virtual construction. This article will show how to apply a practical approach to 4D construction simulation, including large equipment routing, clear work areas, on-site material storage, and key milestone indicators. While it is a big step forward to improving communication and planning, it doesn’t include the space needed during construction-which limits what can be predicted during the construction process. Usually the geometry is only shown in its final constructed location. 3D coordination is now used in most projects to help improve predictability during construction.
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