Electronic Information Manager(s) The BEP will identify the persons responsible for managing and executing the responsibilities of this section. Pre-Design Site Survey Modeling If the A-E scope of services includes surveying the existing project site and preparing a model of the existing facilities, the BEP will include the following: Description of tasks and schedule for developing the pre-design model; Description of recommended methodology for developing the existing site information, such as: Development of model based on as-built documents for facility; Optical surveying facility to develop a new model or validate the accuracy of existing information used to create a model; Laser scanning all or a portion of the facility to develop new model or validate the accuracy of existing information used to create a model; or Combination of tasks or approaches to accomplish the goals. If laser scanning is required or will be used by the A-E, the BEP should identify: Primary and secondary objectives of laser scanning; Areas of Interest; Resolution requirements and measurement units; Type of deliverable; Control network or other dimensional control; and Quality control procedures. A-E should use the GSA BIM Guide for 3D Imaging () in developing this portion of the BEP. Interoperability A-E is responsible for selecting BIM software that is adequate for A-E's tasks. Moreover, A-E must demonstrate that the software used by it and its consultants can exchange BIM information reliably and accurately and can read and export BIM information into open source file formats to the extent required in Section 4.2. NASA's listing of BIM software is not a recommendation that any specific product or products be used, nor is it a representation or warranty as to the adequacy of the software product or of its ability to exchange BIM information reliably and accurately. BIM Software NASA accepts object oriented software applications that comply with current industry interoperability standards and are able to be used in a collaborative environment. All software platforms used for NASA projects will be compliant with: • The most current version of Industry Foundation Classes (IFC) file format • Commercially available collaboration software that provides interoperability between the different software applications (see below).
Types of Model Elements Model elements will be derived from the following sources: Manufacturer’s Model Elements - elements created by and acquired from manufacturers often have more information than is prudent to keep in the BIM model; the appropriate level of detail should be retained for the design element. However, embedded performance data must remain for analysis and specification purposes. Custom Created Model Elements – custom model elements that are created must utilize appropriate BIM Authoring tool templates to create custom elements. Custom models components need to be assigned as a part and part of a family or group. Geographical Location The spatial coordination (coordinates) of the master BIM file will be set at the beginning of the project. Once established, spatial coordinates will only be changed by mutual consent of the A-E and the NASA project manager, with the matter recorded in the meeting minutes and the BIM Execution Plan. Once the design coordinate system is agreed upon, any model(s) of existing buildings relevant to the project will be converted into the coordinate system used for each designed building. As is standard practice, NASA requires that a building within a BIM file include a to accurately locate that building within the site and to give it a physical location context at larger scales. The Information Manager will geo-reference site plans and building models for site layout surveying and future GIS use in accordance with the State Plane Coordinate system where the project is located. The BIM file point will be located at the SW corner of the structural grid. Points of Reference The Information Manager will provide a 3D grid for incorporation into the spatial coordination model. This will provide the viewer with a quick point of reference when navigating through the model. Room information will also be incorporated. Requirements for Modeling Space Space information imported from the NASA Project Program Requirements will be the source for space creation in BIM. Areas of four square feet or greater will be tracked and identified by name, even if those spaces are not listed in the program narrative. Spatial data will be generated and associated with bounding elements (walls, doors, windows, floors, columns, ceilings). The Assignable Areas Square Footage (ASF), Non-Assignable Areas Square Footgage (NaSF), and Gross Square Footage (GSF) will be modeled for each functional space, using