CAD StandardsCAD Standards

Presented by Gary Holeman PESenior Design and Automation Engineer

Roadway Engineering unit503-986-3758

First Contacts for CAD First Contacts for CAD StandardsStandards

Your first contact for CAD/Drafting Standards questions.

• Tien Nguyen – Standards Drafter• Scott Failmezger – Region 1• Larry Garrison – Region 2• David Knox – Region 3• Joseph Rodriguez – Region 4• Rick Stanton – Region 5

Proposed TopicsProposed Topics

• Typical Sections• What are typicals and what are they used

for. • How to use stacks & tables. • How to show features, barriers, guardrails,

walls. •

Construction Notes• Cover how notes are to look, how

everything is singular with a number given, how notes covering a number of sheets should look, when to give quantities and when not too and on and on.

Typical SectionsTypical Sections

What are typicals and what are What are typicals and what are they used for?they used for?

Typicals, short for typical sections

From HDMFrom HDM

• Typical sections represent the final cross sections of the roadbed and show the following items:– Lane widths– Shoulder width(s)– Median width– Surfacing material– Surfacing thickness

• Including lifts– Roadbed slopes– Profile Grade location(s)– Curb– Walks– barrier and guard rail

From the CPDGFrom the CPDG

• A typical section is a detailed illustration of the roadway surface design of a project.

• Each subsequent typical section or partial section represents a change or variation in the design.

My take on itMy take on it

• Typical sections represent the design of the roadbed and conveys this design to the inspector and contractor, as it varies along the alignment

How to use stacks & tables. How to use stacks & tables.

• From section 5.2.3 in the Contract Plans Development Guide, Volume 1.– Place typical sections one below the

other in succession along stationing and aligned by center line in approximately the center of the plan sheet as shown in Figure 5-7. Stack subsections directly above their relative section. Typicals are arranged in order by stationing from top to bottom on a sheet. Stacks are arranged from bottom to top.

How to use stacks & tables, How to use stacks & tables, cont.cont.• Typical section placement

– Top to bottom along the alignment, except stacks

– Stacks are placed above the section, bottom to top

• Stacks show variation within the stationing of the associated section.

• Example

How to use stacks & tables, How to use stacks & tables, cont.cont.• Table placement

– Placed under the associated section

• Tables are used with sections to convey complex taper information

• Examples (Tables)

How to show features, barriers, How to show features, barriers, guardrails, wallsguardrails, walls

Figures 5-6 and 5-11, in the CPDG, show placement and notes

• Examples

Construction NotesConstruction Notes

Construction NotesConstruction Notes

• Construction notes convey general information and location to the contractor and inspector.

Cover how notes are to look, Cover how notes are to look, how everything is singular with how everything is singular with a number given, how notes a number given, how notes covering a number of sheets covering a number of sheets should look, when to give should look, when to give quantities and when not too, quantities and when not too, and on and on.and on and on.

ContinuedContinued

• Appendix F• Chapter 9 of the CPDG

QuestionsQuestions