Section 1 - Site Base Modeling Overview



CTDOT is standardizing on producing model-centric designs. This will allow for increased productivity and adherence to FHWA Every Day Counts (EDC) Innovations and Building Information Modeling for Infrastructure also known as BIM for Infrastructure or BIMFi.

Industry trends across the world using BIMFi include:

  • Mobile Field Inspection and Data Collection
  • AMG (Automated Machine Guidance)
  • GPS Construction Layout
  • eConstruction
  • GIS and Asset Management

The “I“ in BIMFi is one of the most important aspects of the technology. CONNECT Edition products will allow designers to produce a product that retains the business data (the “I” in BIMFi) by assigning Item Types placed on CAD Graphics. This data, also known as Electronic Engineering Data (EED), can be consumed further downstream during Design Reviews then to Construction, Asset Management and Maintenance. 

When producing model-centric designs it is extremely important that model types be used as intended. A Design Model Type will be used for all Base Models.

Base Models will: Base Models will not have:

- be geospatial

- Border Cells

- contain cells, shapes, and lines that represent the physical design elements

- call outs

- include Item Type information on cells, shapes and lines.

- notes

- tables

- dimensions

Each Model Type is represented by a different Icon on the Models Dialog Box.

Models Dialog Box


The two other types of models will be used in downstream processes as described in VOLUME 13 - CONTRACT PLANS PRODUCTION.

  • Drawing Model — Contains annotations, dimensions and callouts.
  • Sheet Model — Contains a Border Cell, Sheet Boundary (plotting shape) and may also have annotations, dimensions and callouts.