The BIM Process
3D Laser Surveying and BIM: Understanding The Process
Step 1: Establish Your Application Scope
Every customer contacts us with a goal in mind. However, they may not know what has to be done to achieve that goal. At ECM we begin every project with a customer visit and a full evaluation of the scope of the project. This is the most important part of the process. Understanding the objectives of the customer sets the stage for establishing equipment type, scanning technique, modeling process, and ultimately the customer’s end result.
Step 2: Create a BIM to CAD Comparison
We understand the need to have control over every aspect of your project. ECM engineers are sensitive to company policies and non-disclosure agreements. Our engineers will not only walk you through the process, but they will identify every level of detail so you understand every step and what comes next in the process. You tell us your specification requirements and we will build the model to match. All you have to do is send us the CAD and any accompanying PDF files for us to get started.
Step 3: Select the Right Technology
Land Surveying is not just about experience and technique in the field, it is about understanding and adopting the science of measurement otherwise known as “metrology” to the world of construction, architecture, facility planning, historic preservation, and overall infrastructure. ECM has over 15 years of experience in the metrology industry ranging from dimensional measurement, scanning and modeling, reverse engineering and part-to-CAD reporting.
Step 4: Choose the Right Scanning Method
A scan typically ranges from 2 minutes to 30 minutes depending on the density, sampling, and field of view settings. Some scanners are able to record a panoramic photograph which is superimposed onto the point cloud resulting in colorized RGB data points. Each point cloud created does not have any positional reference to the other scans. In order to reference several scans together, software will require using targets or in the case that targets aren’t used; the scans overlap each other.
Step 5: Review Your Results
Many variables can occur that will affect data quality and time spent out in the field. The skill in knowing how different variables will affect the data typically comes with more scanning experience; however, all outcomes can usually be predicted beforehand with proper understanding. Our engineers have experience with the leading scanning equipment in the industry and we partner with the OEMs that manufacture the equipment.