Architecture & DesignGrading and Drainage Design of Modern Roundabouts

Grading and Drainage Design of Modern Roundabouts

1.00 Hr
SKU: JCOM-00156

The rapid increase in population density has increased traffic and traffic crashes, significantly degrading transportation safety. Transportation agencies have begun implementing the Safe System Approach for roadway design, recognizing that human error is inevitable and roadway systems must reduce severe and fatal crashes. Modern roundabouts align with this philosophy by managing vehicle speeds, reducing conflict points, and creating more forgiving crash conditions. While technical documentation exists for roundabout horizontal geometry, there’s very little documentation on grading and drainage design. This course covers key technical areas for vertical design of roundabouts, including Safe System Approach applications, planning and construction considerations, three key grading and drainage concepts, typical sections for circulatory roadways, approach and departure profiles, and drainage inlet installation.

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Grading and Drainage Design of Modern Roundabouts
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Course Details

Learning Objectives

At the end of this course, you will be able to:

  • Explain how the Safe System Approach supports the use of roundabouts as a systemic safety countermeasure.
  • Identify key planning and construction considerations that influence grading and drainage design decisions.
  • List the three key concepts for vertical design of modern roundabouts.
  • Describe a typical section of the circulatory roadway.
  • Identify the key critical design points of the roundabouts approach and departure roadways.
  • Describe profiles for the intersections, approach, departure, and circulatory roadways.

Specs

Course Level
Advanced
Languages
English
Compatibility
Audio, Video, MobileReady, Responsive

Author | Alfredo Cely, P.E., MSEM

Alfredo is a Civil Engineer that has managed Transportation, Land Development, Water Resources and Aviation projects from planning to construction for the past 14 years. Most recently his consulting work has focused on assisting state and local agencies in improving the safety of our transportation network. He has been responsible for several multi-modal transportation projects in the Tampa Bay Area, throughout the U.S. and abroad. He is a licensed Civil Engineer in Florida, North Carolina, and Ecuador.

At the University of South Florida, Alfredo serves as an instructor for the Transportation sections of the P.E. Preparation Courses hosted by the American Society of Civil Engineers’ (ASCE) Student Chapter. Alfredo is a member of ASCE’s Street and Highway Operations Committee and is an associate member of the Aviation Planning and Operations Committee. At the national level, Alfredo helps several of the Transportation Research Board Committees and is currently involved in the following committees: Low Volume Roads; Hydrology, Hydraulics and Water Quality; Pedestrian Safety; and Bicycle Transportation.

Alfredo served as the Chair of the local ASCE Transportation and Development Institute group during its first two years (2012-2014). The Florida West Coast Chapter of the ASCE has recognized Alfredo’s commitment to the profession and our community honoring him with the Young Engineer of the Year Award in 2014. As part of his involvement with the local engineering community, Alfredo currently serves as a Board Member of the Florida West Coast Branch for ASCE.

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