CAD CAD Specialist Civil and Infrastructure Design

Question 1

Which AutoCAD Civil 3D object type is used to model the horizontal and vertical geometry of a road centerline?

Accepted Answer

Alignment

Answer

Profile

Answer

Corridor

Answer

Grading Group

Question 2

In Civil 3D, what term describes the cross-sectional shape applied repeatedly along an alignment to generate a 3D road model?

Accepted Answer

Assembly

Answer

Subassembly

Answer

Corridor

Answer

Feature Line

Question 3

What is the primary purpose of a grading group in AutoCAD Civil 3D?

Accepted Answer

To model site grading and earthwork volumes

Answer

To define road lane widths

Answer

To annotate contour elevations

Answer

To create drainage pipe networks

Question 4

Which coordinate system is most commonly specified in US civil engineering CAD projects for georeferencing drawings?

Accepted Answer

State Plane Coordinate System (SPCS)

Answer

WGS84

Answer

UTM Zone 10N

Answer

ECEF

Question 5

In a stormwater drainage design drawn in CAD, what term refers to the lowest point in a pipe or channel cross-section?

Accepted Answer

Invert

Answer

Crown

Answer

Soffit

Answer

Flowline

Question 6

When creating a contour map in Civil 3D, which surface analysis method shows areas of equal elevation?

Accepted Answer

Contours

Answer

Slope Arrows

Answer

Watersheds

Answer

Elevation Banding