CTDOT CONNECT DDE GUIDE VOLUME 8 - LANDSCAPE DESIGN BASE MODELING
Section 1 - Landscape Base Modeling Overview
MODEL-CENTRIC DESIGN
ITEM TYPES OVERVIEW
PLACEMENT TOOLS AND ITEM TYPES
MODEL-CENTRIC DESIGN
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.
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.
ITEM TYPES OVERVIEW
An Item Type is a user defined set of properties used to describe graphical and non-graphical information of an object or element. Item Types are set up and managed by the CTDOT CAD administrators as part of the delivered workspace. Item Types will be attached after placement for elements such as lines and shapes. The workspace has been set up so as Plant Cells are placed, Item Types are already attached. The properties of an Item Type can be edited by the user in the Properties dialog box along with the other properties of an element.
CTDOT Item Types are connected to the Department’s Master Bid List that contains pay item numbers, descriptions and units. Users will enter the required pay item description and the item number and pay unit fields will auto-populate. The most up to date Master Bid Item Lists can be found on the Department’s Contract Development Website.
In the image below notice the look up information is grayed out and the user input is not. The greyed-out properties are getting auto-populated by other Item Type property fields or other attributes on the file itself. Some user input fields are actually pick lists and others are strictly manual input.
PLACEMENT TOOLS AND ITEM TYPES
The Landscaping tab on the CTDOT workflow will be used to place graphics. These tools place 2D lines, shapes and cells. The Hardscape, Landscape and Pattern tools will open Cell Libraries.
Most Cells from the Landscape Cell Library will come prepopulated with an Item Type already attached during placement. Other Cells, Lines and Shapes can have Item Types attached after placement. Using the Attach Item tool.
