Building Information Modeling
With the help of Autodesk's Revit and Navisworks programs, we at W.S. Cumby are able to manage a host of computer generated models either designed in-house or by other architects and design consultants.
BIM can be used to demonstrate the entire building life cycle including the processes of construction and facility operation. Quantities and shared properties of materials can easily be extracted. Scopes of work can be isolated and defined. Systems, assemblies and sequences are able to be shown in a relative scale with the entire facility or group of facilities.
Benefits of incorporating BIM tools into the Construction Management process include:
- Clarifying scopes of work during bidding and purchasing
- Coordinating construction sequencing between trades
- Virtually coordinating contract documents and shop drawings to identify and resolve geometric conflicts in advance of construction
- The ability to identify collisions (e.g., identifying ductwork running into structural members)
- Rehearsing construction plans and sequences
- Visualizing what is to be built in a simulated environment
- Fewer errors and corrections in the field
- Higher reliability of expected field conditions, allowing opportunities for prefabrication of materials off-site resulting in greater field productivity and shortened construction schedules
- 4-D scheduling to optimize sequence of construction, manage project logistics and communicate the project plan to subcontractors
- The ability for non-technical people (clients, users, etc.) to visualize the end product
- Fewer Change Orders and thus, lower construction costs
- Accurate as-builts for future facility management
- Better documentation for LEED accreditation
The Composite Model may be used to support a variety of construction work processes including:
A BIM process known as “clash detection” can be utilized to check for interferences and coordination issues between trades prior to construction in the field. Clash reports are generated and distributed to members of the design team in the form of Requests for Information (RFIs).
A 4-D BIM scheduling application can link CPM schedule activities to 3-D objects. This allows for a graphically rich and animated representation of the planned construction sequence over time. 4-D schedules are a powerful tool for phasing, coordinating and communicating planned work to project stakeholders and those directly responsible for executing the work.
Quantity Takeoff and Estimating
The BIM model will be used to aid the estimating process by providing the ability to rapidly extract detailed counts of components, area and volume of spaces and material quantities.
General Information Attributing
3-D objects can also be linked to a variety of source documents via hyperlinks. This enables the model to function as a graphical information system (GIS) for the building. Project correspondences, technical data, O&M records and links to manufacturers’ websites are all possible in this environment. This information may be included in an as-build model of the completed project.
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