BUILDING INFORMATION MODELLING

Maxwell GeoSystems' MissionOS provides its Clients with leading-edge Building Information Modelling (BIM) visualisation capability.

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Get Data to Drive BIM and Communicate Works Progress and Performance in 3D. Remove Visualisation Uncertainties and Explore Spatial Relationships.

There is a significant move towards the use of BIM within construction. This starts during design and enables object characteristics to be added to 3D drawings, sequences to be worked out and schedules and BOQ items to be derived directly. Whilst this works at design time, during construction CAD staff are often hard pressed to keep up with the as built. The MISSIONOS contains all this data and is designed to track the project progress in real time. Once the data progress is digitised in the MISSIONOS the 3D shapes can be automatically generated and updated. As the figure below shows this can also include information about instrumentation results which may highlight pinch points or areas where stresses may be highest in the completed construction. These simple BIM components are created in real time for easy communication and for inclusion in larger models. Without the need for human intervention staff can be appraised on the latest status of the construction and understand all the interactions with the surrounding infrastructure.

Created in Sketchup to be small and transferable

Maxwell BIM models are created using Sketchup. Key advantages of Sketchup are the small and compressible size of the models files which facilitates sharing and the fact that the viewer is free to download, easy to use and familiar to most. The models can also be directly inserted into Google Earth as well as into corporate BIM environments such as MicroStation and Revit. The biggest benefit of Sketchup is that models can be constructed in code. BIM models can now be live documents updated automatically as the site information changes. The BIM provided by Mission OS conforms to a aspects of BIM level 2/3 particularly when considered specific to as built geometry and level 5 when considered in terms of movement records. With all BIM elements ultimately driven from the construction programme and auto generated this becomes a construction progress, planning and sequencing tool as well as providing added insights into the appropriateness of temporary works.

BIM Layers

Mission OS BIM Layers include:

Layer Element Type Level 1 Level 2 Level 3 Level 4 Level 5
Survey Level Location/type Alarm State Displacement
3D survey Location/type XY movement Z movement Alarm State Displacement
Piezometers Location/type Water level Alarm State Change
Inclinometers Location/type Movement at various depths Magnitude and Vector Alarm State Change
Extensometers Location/type Movement at various depths Magnitude Alarm State Change
Strain Gauges Location/type Strain/Stress Alarm State Change
Load Cells Location/type Load Alarm State Change
Distance gauges Location/type Distance Alarm State Change
AGS Boreholes Location/type Record of geology and tests carried out
Tunnels/Shafts Tunnel alignment Individual adits Coloured by tunnel parameters (from cycle file)
Piles, Barrettes and D walls Pile location, dimension and depth Type of pile Rock vs soil embedment
Excavations Divided into zones Location, depth Records of progress
Struts Locations, lengths orientations Dimensions and type (equivalent area)
Ground surface/topography Location, triangulations
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