Highway Construction Part 4: Culvert and Drainage Installation TSYH 4404

Upon successful completion of each module, the student will be able to:

Module 1 - Introduction to Highway Drainage

• Define the terms drain and drainage.
• State and describe the problems associated with highway drainage and the procedures used to avoid those problems.

Module 2 - Legal Aspects of Drainage

• Cite examples of drainage problems having legal implications.
• Recommend in general terms appropriate measures to avoid potential legal action involving drainage.

Module 3 - Culvert Location and Placement

• Analyze existing topography and recommend suitable culvert locations including channel diversions based on the principles of culvert alignment.
• State and define the relationship between culvert grades and velocity considerations and effect.
• Calculate culvert lengths given the appropriate data including determining skew angles, slope distances and fill slope ratios.
• Recommend appropriate bedding and foundation requirements given the construction conditions and culvert type.

Module 4 - Corrugated Steel Culvert

• State, define and describe the shapes and features of corrugated steel culvert products and their applications for culvert construction.
• Define and select values for the sectional properties of corrugated steel pipe from the manufacturers specifications.
• Calculate handling weights and unit weights for corrugated steel culverts.
• Determine the wall thickness and type of corrugation required given the loading, pipe size, height of fill and unit weight of the soil.
• Determine the minimum and maximum height of fill allowable given the pipe specification.

Module 5 - Concrete Pipes

• Describe the processes of concrete pipe manufacture and explain the specifications for various classes of concrete pipe.
• State, define and specify the loading and use of various classes of concrete pipe.
• Define the term transition width as related to trench width and determine the appropriate transition widths for various sizes of concrete pipe.

Module 6 - Culvert Installation

• State and define the correct methods for installing and jointing corrugated steel and concrete culvert pipes.
• Specify installation procedures for backfilling corrugated steel and concrete culverts of various shapes.
• Identify sources of construction specifications related to drainage installations and interpret these specifications when conducting inspections of culvert installations.

Module 7 - Other Drainage Facilities And Appurtenances

• State and discuss the relationship between PVC and other types of culvert materials.
• State and discuss the conditions that require subdrainage control and the general design process for subdrains.
• Identify the elements of a storm sewer system including appurtenances.
• State and discuss the surface water inlet types and relationship between surface water control and the affect on traffic movement.

Module 8 - Maintenance and Environmental Considerations

• Define and recommend methods and procedures for the maintenance of ditches and culverts including debris and beaver controls.
• Conduct an inspection, record and recommend appropriate procedures for drainage facilities maintenance.
• Incorporate the environmental aspects, particularly as related to fish migration, into recommendations with respect to culvert design and installation.

Effective as of Fall 2003