CREATE ASSEMBLIES and CORRIDOR

Lecture Outline

CREATE ASSEMBLIES and CORRIDOR

1. DEVELOP A “TYPICAL SECTION” BY CONNECTING SUB-ASSEMBLIES

We will attach “subassemblies” together to form a total “assembly” of cross section elements left and right of the centerline – a typical section.

Zoom/Center 17000,20000 height 50 -- to place the assembly drawing in a new space of the dwg.

ASSEMBLY icon/CREATE ASSEMBLY, dialog box opens.

Name: ACCESS ROAD

Leave all others default.

OK.

Specify assembly baseline location – pick any point. – see mark with green line – the point view of the baseline’s vertical alignment.

Load the subassembly tool palate: HOME/PALETTES/Second small icon from top. – this shows various cross section features from which to choose – traffic lanes, shoulders, medians, curbs, sidewalks, guardrail, etc.

Choose BASIC LANE, a properties box opens.

Side: Right

Keep width 12,

Set slope to 2.08,

depth to 1.0

In the drawing, pick the small circle. The top left corner of the traffic lane should attach to the baseline point and extend to the right.

Next, attach a SHOULDER. From the subassemblies, pick basic shoulder. A Properties box pops up. Set:

Side: Right

Depth: 0.67

Width: 4

Slope: -4

In the dwg, pick the upper right corner of the pavement lane to attach the shoulder.

Now, attach a GUARDRAIL. Pick basic guardrail. Side: right, leave all properties the same. Pick the top right point of the shoulder to attach the guardrail.

Now, we will “mirror”. Pick the three subassemblies, rt. Click, MIRROR. Pick the original blue circle. You now see both right and left lanes, shoulders, and guard rails.

Now pick GENERIC/LINK OFFSET AND SLOPE. Set:

Slope: -2

Offset from baseline: 22 (this is the link’s width past the guardrail.

Now, pick the center right point of the guardrail to insert.

Change the property offset to -22, and pick left exterior guard rail point.

Now pick BASIC/BASIC SIDE SLOPE CUT DITCH. Set:

Side: right

Attach to right end of right link.

Change property side: left, attach to left end of left link.

Check toolspace for the subassemblies listed.

2. CREATE CORRIDOR

HOME/CORRIDOR/CREATE SIMPLE CORRIDOR

Name: ACCESS ROAD CORRIDOR, OK.

Command prompt: Pick any point on the horizontal baseline alignment polyline.

Select profile: Pick any point on the proposed vertical profile.

Select an assembly or pick from list: ACCESS ROAD, OK

A TARGET MAPPING dialog box opens. This “targets” the surface that the assembly needs to be applied to.

Pick <Click here to set all>, EXISTING GROUND, OK

Now, by picking OK, the corridor will be developed. Inspect the dwg to see the new features added: The pavement edges, the shoulders, guardrails, the links, the sideslopes, the slope limits (daylight), developed at 25’ intervals.

The corridor shows the entire construction limits of the new road.

TOOLSPACE – shows the subassemblies and assembly. Also shows the new corridor object.