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Survey for BIM specification - a five-stage process
There are five stages to our “Survey for BIM” specifications, which we have developed in line with the RIBA Digital Plan of Works. This provides a great starting point for determining your requirements.
The Level of Detail or LOD contained in the model increases progressively through the stages. These levels are explained in detail further down this page.
Defining the Level of Detail (LOD) in your BIM model
The amount of time and therefore cost of capturing the data and creating the model will increase as the level of detail increases. Once we have agreed the model’s Level of Detail, we can then discuss how to accommodate either a Revit® families library or incorporate your preferred specification using a bespoke format that we will create.
Digital construction related services
In addition to our survey for BIM, we also offer additional 3D BIM model support services which you can use throughout the lifecycle of your project. These include
- 3D design co-ordination
- 3D model project management and clash detection reporting
- Additional measurement e.g. ‘As built’ Verification Surveys
With our practical experience of digital construction, our professional team of surveyors provides much more than accurate measurements. We provide knowledgeable support and project management that will help you enjoy the much-celebrated benefits of BIM in reducing time, cost and waste.
How can we help you?
Discuss your survey for BIM project with a CADS expertGet in touch
3D design coordination for award-winning auditorium
Working with specialist joinery contractor TMJ Interiors, CADS coordinated the project designs of all 70 contractors to create a federated Revit® modelRead case study
What are the Levels of Detail in a BIM Model?
LOD1 – base survey mass model
The basic outline of buildings and structures without any architectural details at a 1:200 traditional scale.
LOD2 – structural components base survey model
The major structural components and structural openings at a 1:200 traditional scale.
LOD3 – standard survey model
The principal basic architectural details and structures, suitable to generate survey plans, elevations and sections at 1:50 or 1:100 traditional scale. We also build the basic families to a default setting. These may include main MEP services or FFE in outline form.
LOD4 – detailed survey model
This model contains:
- detailed architectural and structural features.
- families will be built to greater detail and principle finishes and construction will be indicated where known.
- the model will be suitable for generating survey plans, elevations and sections at 1:50 or 1:20 traditional scale.
- it is also suitable for recording historic or listed buildings.
- the main and subsidiary MEP and FFE elements will be included if required.
LOD5 – detailed survey model with metadata
As with a LOD4 model, but enhanced with the addition of non-geometric/parametric data and record information supplied by the client or other third parties, where defined and agreed at the outset.
3D laser surveys and point cloud surveys
Working collaboratively, our experienced surveyors will hone your laser or point cloud survey brief to ensure you get the information you need in the right formatView now