BAE 204 Exam 2 Cheat Sheet

What are the steps when designing a project

1. import the existing conditions 2. layout a 2d version of key features i.e. building outlines, road centerlines, pipe networks

what types of segments make up an alignment?

tangents, curves, and spirals

What connects segments?

geometry points that include PI, PC, and PT

What are segment properties?

they can be Fixed, Floating, and Free

Alignment	a 2d line made of straight and/or curved segments, used to represent linear projects such as roads, pipelines, streams, has no elevation but it has direction
Tangents	straight segments
Curves	curved segments with a constant radius (arcs)
Spirals	curved segments that change in radius from one end to the other
PI	Point of Intersection, where 2 tangents intersect or would intersect
PC	Point of Curvature, place where the curve begins
PT	Point of Tangency, place where the curve sends
Fixed	editable only be adjusting its geometry points, does not depend on another segment
Floating	attachable only to another fixed or floating segment, dependent on and always attached to the before segment
Free	located between fixed or floating segments, defined by before and after segments
Station	A number representing the horizontal distance between a point on the alignment and the start of the alignment
Station number format	Full + Partial, full=the number of 100 ft intervals, partial=remaining distance

How to edit/see a profile?

create a profile view

How to make a design profile?

A profile view must be in the drawing to create a design profile, even if its empty

Profile View	a plot with distance along alignment on X axis and elevation on Y axis
Surface Profile	elevations of profile are determined from a surface in the drawings
Design or Layout Profile	elevations are entered by the user to represent the elevations of the proposed design

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BAE 204 Exam 2 Cheat Sheet (DRAFT) by shelbeans