SECTION I: POINT OF ORIGIN/PROJECT CONTROL SETUP

SECTION I: POINT OF ORIGIN/PROJECT CONTROL SETUP

Project Digital Control

To eliminate typical project origin issues, we have developed the below to explain model origin and rotation, and how to use the Shared Reference Point Revit Add-In to reassign the project’s site location and ensure all project model content is aligned with all other parties within all model environments.

We will define two (2) reference points utilizing Autodesk Revit and Autodesk Civil 3D platforms to align model-world with real-world coordinates:

1). Survey Point (located using the Site Survey of Record) The Survey Point represents a known point in the physical world, such as a geodetic survey marker. The survey point is used to correctly orient the building geometry in another coordinate system, such as the coordinate system used in a civil engineering application.

2). Project Base Point (located using a primary building/structure as reference) The Project Base Point defines the origin (0,0,0) of the project coordinate system. It also can be used to position the building on the site and for locating the design elements of a building during construction. Spot coordinates and spot elevations that reference the project coordinate system are displayed relative to this point.

*Revit Origin (important for reference)* The Revit Origin is the invisible 0,0,0 point in Revit that cannot be moved but that you also cannot see. The coordinates of other two points are relative to this location.

SURVEY POINT

All models for the project will maintain a shared coordinate system. The shared Survey Point is at Permanent Control Point No. 1 per the campus survey (Local Ground Coordinates) verified by McCarthy. The Survey Point values will be the same for all buildings on the site:

Real World Coordinates

North/South TBD East/West TBD Elevation TBD Angle to True North TBD

PROJECT BASE POINT

All models for the project will maintain a shared coordinate system and will align to a common Project Base Point within the master Design Model’s building footprint. After the Survey Point has been adjusted as outlined above, the Project Base Point will be set:

Building Name Gridline Location of Project Base Point Elevation of Project Base Point

TBD xx and xx xxx.xx

Project Site/Building Control Setup:

DESIGN Phase: The Project Engineer of Record shall work with McCarthy and the Civil Engineer and/or the Project Survey crew to establish benchmarks and local control points based off survey information. This will establish site control in state plane coordinates. Design-Intent Models will be set to and based off this site control.

CONSTRUCT Phase: A Pre-Construction Meeting will occur with all Project Team members involved to review site control, building control and Robotic Total Station layout points/benchmarks/monuments prior to the installation of any work. McCarthy will take the lead on establishing building control, based on site control coordinates, for all Trade

BUILDING INFORMATION MODELING EXECUTION PLAN (BEXP)

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