Engineering Graphics Exam 2 review

What is the definition of survey

The act of determining the exact form, boundaries, position, etc., of a tract of land or section of a country, by linear measurements, angular measurements, etc.

What are the different components fo data format, PNEZD?

point number, nothing, easting, elevation , description

Name at least 3 common catergories in AutoCAD civil 3d queries?

location, property, data, SOL

Name at lease two ways to build a surface

boundaries, breaklines, contours, DEM files, drawing files, point files

An alignment in Civild 3d is an
stored in the drawing

Object

Name at least two types of transparent commands and its command line entry

Point number= 'PN
Point object= 'PO
station and offset= 'SO
Bearing and Distance= 'BD

Briefly explain why it is important to create an accurate surface in any civil 3d project.

It is important because when we create profiles, sections, corridors, etc, they are all based on the surface we created

Name at least two categories that alignments represent

Road centerline, pipe, ditches, streams or any other linear features

what is a breakline

a line in a TIN surface that represents a distinct interruption in the slope, such as a ridge, road or stream

true or false: we created breaklines so a triangle in a TIN surface may cross the edge

false

Name at least three different surface styles in Civil 3d

Boarders and contours, boarders and contours and slope arrow, boarders and contours and slopes, boarder and grid and elevations

Name the two different types of alignments and describe when they are used

Horizontal- bird eye view, used to design transitions between horizontal curves and roadways

Vertical- Grade changes used to design transitions between high points and low points on roadways

given the following horizontal alignment, name at least 3 points of alignment.

PC- point of curvature
PI- point of intersection
PT- point of tangency
R- radius

Give a definition of Grade

slope, change of vertical distance over 100ft, amount of vertical change in a roadway across a horizontal distance

Name two different types of road grade formats

Percentage or ratio