CADD 121 CAD for Land Surveyors
Instructors:Nitin Bhakta PE, Tom Hannum PE
Students will learn how to use of computer-aided-drafting (CAD) software to
create survey plats, and topographic maps. The first ten weeks of instruction will
focus on learning basic CAD commands. The remaining five weeks will focus on
the production of typical survey plats and topographic maps.
First 10 weeks of instruction
Drawing setup and using a Engineers & Architectural scale
AutoCAD basics, Using units of measurement and drawing limits.
Drawing aids: Line, Construction line, Polygon, Circle, Arc, Ellipse & Fillet.
Printing / Plotting, file storage and retrieval
Absolute and relative coordinates system, WCS and UCS.
Modify and erase functions: Erase, Move, Copy, Undo, Redo, Trim, Extend,
Lengthen, Chamfer, Scale, Offset, Mirror, Break, Rotate and Stretch.
Layers: On, Off & Freezing layers
Linetype: Continuous, Center, Hidden, & Special linetypes (gas, water, tele, etc.)
Multi-line, Polyline, Divide, Array, Text, Mtext
Dimension and Hatch.
Object Selection: Pick, Grips, Window select, Grid, Snap, Osnap and Ortho.
Display features: Zoom, Redraw, Regen
Inquiry functions: Measure, Distance, List & Properties.
Insert Block Commands
Dimensioning and labeling
Last five weeks
Placing bearing and distance on lines
Generating a surface model
Editing and Printing the Triangle Mesh (TIN)
Generating Contour Lines
Labeling Contour Lines
Produce a topographic map given an input file of points.
Produce a survey plat provided as ‘best practice’
by the Nevada Association of Land Surveyors.
We will not have a text book for this class.
1. Import measured points from field survey.
2. Set up and scale the drawing to accept the imported survey measurements.
3. Use common CAD commands to create a survey drawing.
4. Create a surface model from an input file of measured survey points.
5. Edit the triangle mesh contained in the surface model.
6. Use the surface model to create contour lines.
7. Label the contour lines.
8. Implement “elements of best practice’ in the creation of survey plats and maps.
Measurement of Outcomes:
Achievement of the course learning outcomes will be evaluated with short course
projects, survey plats, and topographic maps created by each student with
Method of Instruction
Maximum flexibility should be maintained and encouraged in the development of
this course. It is anticipated that the first offering will be a live classroom format.
The course will be developed around a number of course projects each
containing a performance requirement of the student which may be completed
outside of class utilizing the CAD Software available to the student. Careful
development around this format should allow the course to eventually be offered
as an Internet or LiveNet Course.
Grading will be based on:
50% Course Projects
20% Survey Plats, Topographic Maps
30% Final Exam
Grading will be based on the following breakpoints:
A - 90-100%
B - 80-89%
C - 70-79%
D - 60-69%
F - <60%
Not a Contract:
This document does not in any way represent a contract. It is only a summary of
how the instructor expects the course to proceed. The instructor may make
reasonable changes to the course at any time.