BAE 204 Introduction to AutoCAD Civil3D for Engineers, covers alignments, profiles, assemblies, corridors and one more. chapters 5-8.
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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
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what types of segments make up an alignment?
tangents, curves, and spirals
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What connects segments?
geometry points that include PI, PC, and PT
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What are segment properties?
they can be Fixed, Floating, and Free
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How to edit/see a profile?
create a profile view
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How to make a design profile?
A profile view must be in the drawing to create a design profile, even if its empty
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Profile View
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a plot with distance along alignment on X axis and elevation on Y axis
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Surface Profile
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elevations of profile are determined from a surface in the drawings
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Design or Layout Profile
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elevations are entered by the user to represent the elevations of the proposed design
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Alignment
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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
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Tangents
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straight segments
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Curves
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curved segments with a constant radius (arcs)
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Spirals
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curved segments that change in radius from one end to the other
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PI
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Point of Intersection, where 2 tangents intersect or would intersect
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PC
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Point of Curvature, place where the curve begins
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PT
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Point of Tangency, place where the curve sends
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Fixed
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editable only be adjusting its geometry points, does not depend on another segment
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Floating
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attachable only to another fixed or floating segment, dependent on and always attached to the before segment
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Free
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located between fixed or floating segments, defined by before and after segments
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Station
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A number representing the horizontal distance between a point on the alignment and the start of the alignment
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Station number format
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Full + Partial, full=the number of 100 ft intervals, partial=remaining distance
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