BIM 101: Getting Layout Points to the Field


If your BIM data has already been prepped for field layout, you’re ready for the next step: taking it into the field. Armed with BIM layout points, plan underlays and reference models, you are now ready to shoot points on the jobsite that replicate the accuracy of BIM in the office. Continue reading…

BIM 101: 6 Cool Apps for Viewing 3D Models in the Field


We’ve all heard about the trend of “Getting BIM to the Field.” Typically, models were used in the office for pre-con and not something that applies to field work, where 2D datasets are the norm. Although the 2D process is familiar, it limits the amount of information available to the construction team. Taking the model to the field for use as a reference can substantially increase accuracy by providing immediate access to information that is not visible or clear on 2D plans.

Fortunately, the development of tablet computers and recent software advances have made viewing reference models in the field much easier either locally (preloaded onto the tablet) or in the cloud; in fact, many software viewers are available for free. Here are six apps that allow you to take reference models to the jobsite. Continue reading…

BIM 101: How to Prep Model Data for Field Layout


If your project is working with highly accurate models in the office, that’s a good start for BIM. In many cases, however, the model data isn’t being used directly in the field. At best, this information gap drives up project risks; at worst, it results in errors and delays that can derail the entire construction schedule and budget and potentially lead to litigation. Fortunately, these problems can be easily solved by enriching the model with construction layout points.

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Five Steps to Safely Open Revit Models

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As a contractor, we see Autodesk Revit models all the time from design partners, precast detailers, electrical contractors, engineers, and many others. If we get a Revit model (.RVT), we try to use it as much as possible. However, while the Revit format is easy to open, files provided by external sources often generate error messages, corrupt files and other unwelcome dialog boxes that can make working with these models a challenge. Fortunately, many headaches can be avoided by paying attention to how you open a file. Continue reading…

Why You Should Be Modeling in Decimal Units

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Modeling for the field and/or layout demands more precision than your standard visualization model. If you’re based in the US, this is especially important. In Revit, for example, the units may be set to show up to 1/16 or 1/8 inches of precision. This means any dimension less than 1/8 of an inch will simply round up – a nice plus if you’re creating sheets but a shock to anyone using a model for layout. Continue reading…