Surveying Highways Part 1: Horizontal Alignment TSYH 3311

Upon successful completion, the student will be able to:

Module 1 ¾ Layout Procedures for Control Points

• Define and describe layout procedures for control points, including:
• Offset method
• Polar method
• Intersection method with distances
• Intersection method with direction.

Module 2 ¾ Introduction to Horizontal Curves

• Define and describe the types of horizontal curves.

Module 3 ¾ Simple Circular Curves

• Define the elements of a circular curve.
• Define and discuss the layout procedures for circular curves, including:
• Circular curves and stationing
• Deflection angle method
• Offset method from a tangent
• Polar method from control stations.
• Identify and perform special computational problems for circular curves, including:
• A curve tangential to three given lines
• A curve tangential to two given lines passing through a point
• A curve tangential to a line and passing through two points
• A curve passing through three given points
• Intersection points of two curves
• Intersection of a curve and a straight line
• Areas within circular boundaries.
• Define the elements of compound and reverse curves and perform computations for:
• Compound and reverse curves between an existing straight line and a circular arc
• Compound and reverse curves between two existing circular curves
• Compound curves through a fixed point with given radii
• Reverse curves between parallel tangents
• Reverse curves between non-parallel tangents.

Module 4 ¾ Compound and Reverse Curves

• Compound and reverse curves between an existing straight line and a circular arc.
• Compound and reverse curves between two existing circular curves.
• Compound curves through a fixed point with given radii.
• Reverse curves between parallel tangents.
• Reverse curves between non-parallel tangents.

Module 5 ¾ Physical Foundations of Transition Curves

• Define and discuss the physical foundations of transition curves, the Mathematical Theory of Clothoid, the Elements of a Spiral and Non-symmetric Spirals.
• Employ the formula and perform computations for transition curves.

Effective as of Fall 2003